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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Publication Year 2019 Remove constraint Publication Year: 2019 Subject term ammonium Remove constraint Subject term: ammonium Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
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1. 15N-amino sugar stable isotope probing (15N-SIP) to trace the assimilation of fertiliser-N by soil bacterial and fungal communities

Author:
Michaela K. Reay; Alice F. Charteris; Davey L. Jones; Richard P. Evershed
Source:
Soil biology & biochemistry 2019 v.138 pp. 107599
ISSN:
0038-0717
Subject:
amino acids; ammonium; application rate; bacterial communities; biochemical pathways; fungal communities; galactosamine; glucosamine; grassland soils; immobilization in soil; isotope labeling; mannosamine; mass spectrometry; muramic acid; nitrates; nitrogen; nitrogen cycle; nitrogen fertilizers; nutrient use efficiency; soil bacteria; soil fungi; soil organic nitrogen; stable isotopes
Abstract:
... Although amino sugars represent a major component of soil organic nitrogen (ON), the assimilation of nitrate (NO₃⁻) and ammonium (NH₄⁺) into amino sugars (AS) by soil bacteria and fungi represents a neglected aspect of the global N cycle. A deeper knowledge of AS responses to N fertiliser addition may help enhance N use efficiency (NUE) within agricultural systems. Our aim was to extend a sensitiv ...
DOI:
10.1016/j.soilbio.2019.107599

2. 2-Oxoglutarate cooperativity and biphasic ammonium saturation of Aspergillus niger NADP-glutamate dehydrogenase are structurally coupled

Author:
Nupur Agarwal; Adhish S. Walvekar; Narayan S. Punekar
Source:
Archives of biochemistry and biophysics 2019 v.669 pp. 50-60
ISSN:
0003-9861
Subject:
Aspergillus niger; Aspergillus terreus; active sites; amino acids; ammonium; carbon; chimerism; enzymes; ionic strength; mutants; nitrogen
Abstract:
... NADP-glutamate dehydrogenase from Aspergillus niger (AnGDH) exhibits sigmoidal 2-oxoglutarate saturation. Despite sharing 88% amino acid identity, the homologous enzyme from Aspergillus terreus (AtGDH) shows hyperbolic 2-oxoglutarate saturation. In order to address the structural origins of this phenomenon, six AnGDH-AtGDH chimeras were constructed and characterized. The C-terminal sequence (resid ...
DOI:
10.1016/j.abb.2019.05.018

3. A Novel Cold-adapted Endoglucanase (M6A) from Microbacterium kitamiense S12 Isolated from Qinghai-Tibetan Plateau

Author:
Ling Lin; Na Qin; Linyan Guan
Source:
Biotechnology and bioprocess engineering 2019 v.24 no.3 pp. 544-551
ISSN:
1226-8372
Subject:
Microbacterium; amino acid sequences; ammonium; calcium; cellulose; copper; endo-1,4-beta-glucanase; genes; hydrolysis; lithium; magnesium; manganese; manufacturing; nickel; pH; polypeptides; potassium; rubidium; thermosensitivity; wastelands; zinc; China
Abstract:
... The gene M6A coding a novel cold-adapt endoglucanase was cloned from Microbacterium kitamiense Sa12 isolated from a wasteland in Saga, Qinghai-Tibetan Plateau. The deduced protein sequence encoded a 411-residue polypeptide sharing similar identities with glycosyl hydrolase family 6 enzymes. The recombinant M6A displayed maximum hydrolysis activity of 1.51 U/mg toward soluble cellulose substrate, C ...
DOI:
10.1007/s12257-019-0009-6

4. A Spatiotemporal Analysis of Nitrogen Pollution in a Coastal Region with Mangroves of the Southern Gulf of Mexico

Author:
Regina Temino-Boes; Rabindranarth Romero-López; Inmaculada Romero
Source:
Water 2019 v.11 no.10 pp. -
ISSN:
2073-4441
Subject:
Eichhornia crassipes; ammonium; beaches; cluster analysis; coastal water; coasts; deforestation; estuaries; fertilizers; local government; nitrates; nitrogen content; organic nitrogen; rivers; saline water; socioeconomics; tourists; wastewater; water pollution; wet season; Gulf of Mexico
Abstract:
... Nitrogen pollution is a growing problem in many rivers and estuaries of the Southern Gulf of Mexico. In Costa Esmeralda, a tourist destination in Veracruz, the increasing nitrogen pollution is causing severe environmental damage. However, very few studies addressed nitrogen pollution and its consequences for beaches and mangroves. In this study, a spatiotemporal evaluation of nitrogen concentratio ...
DOI:
10.3390/w11102143

5. A biorefinery for valorization of industrial waste-water and flue gas by microalgae for waste mitigation, carbon-dioxide sequestration and algal biomass production

Author:
Geetanjali Yadav; Sukanta K. Dash; Ramkrishna Sen
Source:
Science of the total environment 2019 v.688 pp. 129-135
ISSN:
0048-9697
Subject:
Chlorella; Chlorococcum; ammonium; biomass production; biorefining; bioremediation; carbohydrate content; carbohydrates; carbon dioxide; carbon dioxide fixation; carbon sequestration; chemical oxygen demand; coal; flue gas; fuel production; humans; industrial wastewater; industrialization; lipids; microalgae; nitrates; nitrogen; nutrients; phosphates; photobioreactors
Abstract:
... Massive industrialization all over the globe is the main cause for the generation of huge quantity of wastes such as flue gas and wastewaters. Mindless release of these hazardous wastes into the environment is threatening the health and survival of the mankind. Judicious use of these wastes for microalgal biomass cultivation is recognized as a plausible approach for the creation of a renewable and ...
DOI:
10.1016/j.scitotenv.2019.06.024

6. A comparison of the nitrogen metabolic networks of Kluyveromyces marxianus and Saccharomyces cerevisiae

Author:
Stéphanie Rollero; Audrey Bloem; Anne Ortiz‐Julien; Florian F. Bauer; Carole Camarasa; Benoit Divol
Source:
Environmental microbiology 2019 v.21 no.11 pp. 4076-4091
ISSN:
1462-2912
Subject:
Kluyveromyces marxianus; Saccharomyces cerevisiae; alcoholic fermentation; ammonium; arginine; biochemical pathways; gene expression; grape must; nitrogen; odor compounds; sequence analysis; wine yeasts; wines
Abstract:
... In grape must, nitrogen is available as a complex mixture of various compounds (ammonium and amino acids). Wine yeasts assimilate these multiple sources in order to suitably fulfil their anabolic requirements during alcoholic fermentation. Nevertheless, the order of uptake and the intracellular fate of these sources are likely to differ between strains and species. Using a two‐pronged strategy of ...
DOI:
10.1111/1462-2920.14756

7. A first glimpse at genes important to the Azolla–Nostoc symbiosis

Author:
Ariana N. Eily; Kathleen M. Pryer; Fay-Wei Li
Source:
Symbiosis 2019 v.78 no.2 pp. 149-162
ISSN:
0334-5114
Subject:
Azolla filiculoides; Nostoc; ammonium; evolution; ferns and fern allies; gene expression; gene expression regulation; genes; glutamate-ammonia ligase; glutamic acid; leaves; metabolites; nitrogen; nitrogen fixation; sucrose; symbionts; symbiosis; transcriptomics
Abstract:
... Azolla is a small genus of diminutive aquatic ferns with a surprisingly vast potential to benefit the environment and agriculture, as well as to provide insight into the evolution of plant-cyanobacterial symbioses. This capability is derived from the unique relationship Azolla spp. have with their obligate, nitrogen-fixing cyanobacterial symbiont, Nostoc azollae, that resides in their leaves. Alth ...
DOI:
10.1007/s13199-019-00599-2

8. A laboratory study on the hygroscopic behavior of H2C2O4-containing mixed particles

Author:
Qingxin Ma; Chang Liu; Jinzhu Ma; Biwu Chu; Hong He
Source:
Atmospheric environment 2019 v.200 pp. 34-39
ISSN:
1352-2310
Subject:
Raman spectroscopy; aerosols; ammonium; ammonium nitrate; ammonium sulfate; calcium carbonate; calcium oxalate; calcium sulfate; chemical composition; chemical reactions; hygroscopicity; mixing; oxalic acid; protons; sodium chloride; synergism
Abstract:
... The climatic effect of atmospheric particles is greatly dependent on their hygroscopicity and chemical composition. Although the hygroscopic behavior of individual components of aerosol has been widely studied, the effect of coexisting species on the hygroscopic behavior of mixed constituents is still not clear. In this study, we used Raman spectroscopy to investigate how particles with different ...
DOI:
10.1016/j.atmosenv.2018.11.056

9. A micellar electrokinetic chromatography approach using diastereomeric derivatization and a volatile surfactant for the enantioselective separation of selenomethionine

Author:
Raquel Pérez‐Míguez; Maria Luisa Marina; María Castro‐Puyana
Source:
Electrophoresis 2019 v.40 no.15 pp. 1951-1958
ISSN:
0173-0835
Subject:
ammonium; derivatization; diastereomers; dietary supplements; electrophoresis; enantiomers; enantioselectivity; micellar electrokinetic capillary chromatography; pH; perfluorooctanoic acid; selenomethionine; surfactants; temperature
Abstract:
... A MEKC methodology with UV detection was developed for the enantioselective separation of selenomethionine (SeMet). The use of (+)‐1‐(9‐fluorenyl)ethyl chloroformate (FLEC) as chiral derivatization reagent to form SeMet diastereomers enabled their subsequent separation using ammonium perfluorooctanoate (APFO) as a volatile pseudostationary phase. The effect of APFO concentration and pH, temperatur ...
DOI:
10.1002/elps.201900077

10. A multifunctional gelatine–quaternary ammonium copolymer: An efficient material for reducing dye emission in leather tanning process by superior anionic dye adsorption

Author:
Shilin Xu; Xinlei Niu; Zhaosheng Hou; Chunhong Gao; Jianmei Lu; Yiyi Pang; Ming Fang; Yao Lu; Yujie Chen; Joshy K S; Tianduo Li; Jing Xu
Source:
Journal of hazardous materials 2019 pp. -
ISSN:
0304-3894
Subject:
acid orange II; adsorption; ammonium; composite polymers; dyes; emissions; gelatin; leather; leather tanning; remediation; waste management; wastewater
Abstract:
... Leather wastewater is one of the most polluting industrial emissions. The efficiency of wastewater remediation is limited by its complex composition. Herein, a novel strategy for designing modified gelatine with higher degree of quaternization (MG-2) is presented. The higher degree of quaternization allows sufficient adsorption of dyes in the tanning process. It is an in situ, environmentally frie ...
DOI:
10.1016/j.jhazmat.2019.121142

11. A muscle mimetic polyelectrolyte–nanoclay organic–inorganic hybrid hydrogel: its self-healing, shape-memory and actuation properties

Author:
Sovan Lal Banerjee; Thomas Swift; Richard Hoskins; Stephen Rimmer; Nikhil K. Singha
Source:
Journal of materials chemistry B 2019 v.7 no.9 pp. 1475-1493
ISSN:
2050-7518
Subject:
New Zealand White rabbit; ammonium; crosslinking; fibroblasts; free radicals; hydrogels; hydrogen bonding; montmorillonite; muscles; nanocomposites; pH; polymerization; sodium; starch; tensile strength
Abstract:
... In this investigation, we report a non-covalent (ionic interlocking and hydrogen bonding) strategy of self-healing in a covalently crosslinked organic–inorganic hybrid nanocomposite hydrogel, with specific emphasis on tuning its properties fitting into a muscle mimetic material. The hydrogel was prepared via an in situ free radical polymerization of sodium acrylate (SA) and successive crosslinking ...
DOI:
10.1039/c8tb02852d

12. A new HPLC-MS/MS method for simultaneous determination of Cyclosporine A, Tacrolimus, Sirolimus and Everolimus for routine therapeutic drug monitoring

Author:
Dušan Krnáč; Katarína Reiffová; Boris Rolinski
Source:
Journal of chromatography 2019 pp. -
ISSN:
1570-0232
Subject:
ammonium; blood; cyclosporine; formates; formic acid; high performance liquid chromatography; ionization; methanol; monitoring; rapamycin; tacrolimus; therapeutics; zinc sulfate
Abstract:
... A rapid, simple and robust HPLC-MS/MS method for simultaneous determination of immunosuppressants Cyclosporine A, Tacrolimus, Sirolimus and Everolimus has been developed and validated. Sample of whole blood with volume of 50 μL was prepared by a protein precipitation with methanol and 0.5 mol. L−1 ZnSO4. Chromatographic separation was achieved on a Phenyl-Hexyl column by a gradient elution using 2 ...
DOI:
10.1016/j.jchromb.2019.121772

13. A novel method of ultraviolet/NaClO2-NH4OH for NO removal: Mechanism and kinetics

Author:
Runlong Hao; Xingzhou Mao; Zheng Wang; Yi Zhao; Tianhao Wang; Zhonghao Sun; Bo Yuan; Yankun Li
Source:
Journal of hazardous materials 2019 v.368 pp. 234-242
ISSN:
0304-3894
Subject:
X-ray photoelectron spectroscopy; ammonium; ammonium hydroxide; catalytic activity; chlorine dioxide; electron paramagnetic resonance spectroscopy; hydroxyl radicals; mass transfer; nitrates; nitric oxide; nitrogen dioxide; oxidation; ultraviolet radiation
Abstract:
... The key step for nitric oxide (NO) removal using oxidation method is to efficiently oxidize NO. This study developed a novel advanced oxidation process (AOP) of ultraviolet light (UV) catalysis of chlorite (NaClO2) to oxidize NO. The production of nitric dioxide (NO2) and photo-production of chlorine dioxide (ClO2) were suppressed by adding ammonium hydroxide (NH4OH). The NO conversion efficiency ...
DOI:
10.1016/j.jhazmat.2019.01.042

14. A novel method to recover ammonia, manganese and sulfate from electrolytic manganese residues by bio-leaching

Author:
Jirong Lan; Yan Sun; Li Guo; Zhuoman Li; Dongyun Du; Tian C. Zhang
Source:
Journal of cleaner production 2019 v.223 pp. 499-507
ISSN:
0959-6526
Subject:
ammonia; ammonium; bacteria; bioleaching; carbon; cost effectiveness; filtrates; industrial applications; iron; leachates; leaching; liquids; magnesium; manganese; molasses; pH; sugars; sulfates; wastes
Abstract:
... The electrolytic manganese residues (EMRs) contain variable amounts of trace metals and valuable elements, which can negatively impact the environment. This research focused on recovering valuable elements (SO42−, NH3N, Mn, Mg, and Fe) from EMRs by bioleaching. Bacteria (Y1) were isolated from EMRs and then acclimated for bioleaching processes. The bacteria can grow with waste molasses as the only ...
DOI:
10.1016/j.jclepro.2019.03.098

15. A novel reversed-phase and weak anion-exchange mixed-mode stationary phase based on horizontal polar-copolymerized approach for separation of small organic molecules and inorganic anions

Author:
Qingguo Song; Kailou Zhao; Hongjun Xia; Jiawei Liu; Quan Bai
Source:
Talanta 2019 v.197 pp. 592-598
ISSN:
0039-9140
Subject:
ammonium; anion exchange; anions; epoxides; ion exchange chromatography; ligands; moieties
Abstract:
... A novel silica-based reversed-phase/weak anion-exchange mixed-mode chromatography (MMC) stationary phase referred to as OTAS was synthesized based on the horizontal polar-copolymerized approach using trichlorooctadecylsilane (ODS) and (3-glycidyloxypropyl)trimethoxysilane (GPS) as ligands, and then followed by the reaction of epoxy group with diethylamine to introduce the tertiary ammonium functio ...
DOI:
10.1016/j.talanta.2019.01.075

16. A series of energetic cyclo-pentazolate salts: rapid synthesis, characterization, and promising performance

Author:
Yuangang Xu; Lili Tian; Dongxue Li; Pengcheng Wang; Ming Lu
Source:
Journal of materials chemistry A 2019 v.7 no.20 pp. 12468-12479
ISSN:
2050-7496
Subject:
X-ray diffraction; ambient temperature; ammonium; carbon; chemistry; differential scanning calorimetry; energy; explosives; friction; nuclear magnetic resonance spectroscopy; potassium; silver chloride; stable isotopes; thermogravimetry
Abstract:
... Pentazolate anion (cyclo-N₅⁻)-containing compounds represent a unique class of energetic materials, which have attracted significant research attention. Since the bulk synthesis of cyclo-N₅⁻ has been achieved, significant progress has been made in pairing cyclo-N₅⁻ with different cations to synthesize nitrogen-rich energetic salts. However, to date, no rapid and efficient synthetic route has been ...
DOI:
10.1039/c9ta01077g

17. Abundance, contribution, and possible driver of ammonia-oxidizing archaea (AOA) in various types of aquatic ecosystems

Author:
Weidong Wang; Weiyue Liu; Shanyun Wang; Mengzi Wang; Xi-En Long; Guibing Zhu
Source:
Journal of soils and sediments 2019 v.19 no.4 pp. 2114-2125
ISSN:
1439-0108
Subject:
Archaea; ammonia; ammonium; aquatic ecosystems; carbon; community structure; dicyandiamide; genes; habitats; isotope labeling; lakes; nitrate nitrogen; nitrogen cycle; oxidation; pH; phylogeny; rivers; sequence analysis
Abstract:
... PURPOSE: In some habitats, ammonia oxidation highly depends on the activity of ammonia-oxidizing archaea (AOA), which are therefore important for studying biogeochemical nitrogen cycling. However, the behavior and distribution of AOA in aquatic ecosystems are not well characterized, especially on a global scale. MATERIALS AND METHODS: We sampled 66 sites across all five continents to analyze the g ...
DOI:
10.1007/s11368-018-2188-8

18. Achieving completely anaerobic ammonium removal over nitrite (CAARON) in one single UASB reactor: Synchronous and asynchronous feeding regimes of organic carbon make a difference

Author:
Zheng-Zhe Zhang; Ya-Fei Cheng; Bing-Qian Zhu; Ying-Yi Liu; Qian Zhang; Ren-Cun Jin
Source:
Science of the total environment 2019 v.653 pp. 342-350
ISSN:
0048-9697
Subject:
Thauera; acetates; ammonium; anaerobic ammonium oxidation; cost effectiveness; denitrification; metabolism; nitrifying bacteria; nitrites; nitrogen; organic carbon; oxidation; pollution load; total nitrogen; upflow anaerobic sludge blanket reactor; wastewater
Abstract:
... At least 11% of total nitrogen (TN) remains in the anammox effluent, making it difficult to meet increasingly stringent discharge standards. To overcome this bottleneck, an innovative process to achieve completely anaerobic ammonium removal over nitrite (CAARON) in one single up-flow anaerobic sludge blanket reactor was proposed in this study. The synchronous feeding of acetate at a C/N (nitrite) ...
DOI:
10.1016/j.scitotenv.2018.10.401

19. Achieving stable and efficient single-stage deammonification using plug flow reactor

Author:
Zhengyang Peng; Dawen Gao; Tao Xiang; Xiaolong Wang
Source:
Environmental science and pollution research international 2019 v.26 no.27 pp. 28031-28039
ISSN:
0944-1344
Subject:
ammonium; biofilm; bioreactors; nitrates; nitrifying bacteria; sewage treatment; total nitrogen; wastewater
Abstract:
... The deammonification process is a promising technology, while achieving stable performance is still a challenge for domestic sewage treatment. To investigate the stability of deammonification in the plug flow system, which can be updated from A/O or A/A/O bioreactor, a plug flow fixed biofilm reactor was started-up and fed with synthetic low-strength wastewater. As a result, average ammonium remov ...
DOI:
10.1007/s11356-019-06015-y

20. Acidithiobacillus thiooxidans and its potential application

Author:
Lei Yang; Dan Zhao; Jian Yang; Weidong Wang; Peng Chen; Shuang Zhang; Lei Yan
Source:
Applied microbiology and biotechnology 2019 v.103 no.19 pp. 7819-7833
ISSN:
0175-7598
Subject:
Acidithiobacillus thiooxidans; ammonium; bacteria; carbon; carbon dioxide; electronic wastes; electrons; energy; gases; genetic variation; genome; metals; nitrates; nitrites; nitrogen; oxidation; recycling; sludge; soil; sulfur
Abstract:
... Acidithiobacillus thiooxidans (A. thiooxidans) is a widespread, mesophilic, obligately aerobic, extremely acidophilic, rod-shaped, and chemolithoautotrophic gram-negative gammaproteobacterium. It can obtain energy and electrons from the oxidation of reducible sulfur, and it can fix carbon dioxide and assimilate nitrate, nitrite, and ammonium to satisfy carbon and nitrogen requirement. This bacteri ...
DOI:
10.1007/s00253-019-10098-5

21. Activity enhancement of ammonia-oxidizing bacteria and nitrite-oxidizing bacteria in activated sludge process: metabolite reduction and CO2 mitigation intensification process

Author:
Arsalan Sepehri; Mohammad-Hossein Sarrafzadeh
Source:
Applied water science 2019 v.9 no.5 pp. 131
ISSN:
2190-5487
Subject:
activated sludge; ammonium; carbon dioxide; carbon nitrogen ratio; ecophysiology; metabolites; microbial communities; monitoring; nitrification; nitrifying bacteria; nitrites; nitrogen; nitrogen-fixing bacteria; polymers
Abstract:
... The interaction of ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) is of considerable importance in nitrification process. Ecophysiological interactions between the communities of AOB and NOB were investigated by monitoring NO₂⁻ as the intermediate compound in an organic carbon-depleted nitrifying activated sludge fed only NH₄⁺ as a nitrogen source (40 mg/L). The presence of ...
DOI:
10.1007/s13201-019-1017-6

22. Adsorption characteristics of ammonium ion onto hydrous biochars in dilute aqueous solutions

Author:
Ruemei Fan; Ching-lung Chen; Jui-yen Lin; Jing-hua Tzeng; Chih-pin Huang; Chengdi Dong; C.P. Huang
Source:
Bioresource technology 2019 v.272 pp. 465-472
ISSN:
0960-8524
Subject:
Fourier transform infrared spectroscopy; adsorption; ammonium; aqueous solutions; bamboos; biochar; heat production; ionic strength; moieties; nitrogen; pH; slow-release fertilizers
Abstract:
... This research aims at studying the characteristics of ammonium adsorption onto hydrous bamboo biochar. Results showed that pH played the most important role in ammonium adsorption. High ionic strength enhanced the ammonium adsorption capacity of bamboo biochar. Ammonium adsorption was exothermic and spontaneous. FTIR results showed shift, disappearance, or appearance of specific functional groups ...
DOI:
10.1016/j.biortech.2018.10.064

23. Aerobic bacterial pretreatment to overcome algal growth inhibition on high-strength anaerobic digestates

Author:
Qichen Wang; Rishi Prasad; Brendan T. Higgins
Source:
Water research 2019 v.162 pp. 420-426
ISSN:
0043-1354
Subject:
Chlorella sorokiniana; activated sludge; algae; algae culture; ammonia; ammonium; anaerobic digestion; biomass; dose response; food waste; freshwater; heavy metals; nutrient uptake; nutrients; toxicity; turbidity; wastewater
Abstract:
... Coupling anaerobic digestion and algae cultivation has attracted attention as a sustainable means of treating high-strength wastewaters. In such a scenario, nutrients from the liquid anaerobic digestate are used by algae to produce biomass. However, use of full-strength digestate results in poor algal growth and nutrient removal. Most researchers have overcome this challenge by diluting digestate ...
DOI:
10.1016/j.watres.2019.07.011

24. Amino acid excretion from Euglena gracilis cells in dark and anaerobic conditions

Author:
Yuko Tomita; Masahiro Takeya; Kengo Suzuki; Nobuko Nitta; Chieko Higuchi; Yuka Marukawa-Hashimoto; Takashi Osanai
Source:
Algal research 2019 v.37 pp. 169-177
ISSN:
2211-9264
Subject:
Euglena gracilis; alanine; algae; ammonium; anaerobic conditions; arginine; carboxylic acids; cosmetics; culture media; dietary supplements; drug therapy; excretion; fermentation; glutamic acid; glycolysis; leucine; lysine; metabolites; nitrogen; pH; phosphates; tricarboxylic acid cycle; valine
Abstract:
... Euglena gracilis is a unicellular, eukaryotic alga, and is commercially used for production of food, medication, cosmetics, and dietary supplements. The algal cells are known to produce wax ester and succinate under dark and anaerobic conditions. In our study, we analysed a range of metabolites, and observed the excretion of various amino acids by E. gracilis cells. Arginine, alanine, leucine, lys ...
DOI:
10.1016/j.algal.2018.11.017

25. Ammonia as a substrate-water analogue in photosynthetic water oxidation: Influence on activation barrier of the O2-formation step

Author:
Ricardo Assunção; Ivelina Zaharieva; Holger Dau
Source:
Biochimica et biophysica acta 2019 v.1860 no.7 pp. 533-540
ISSN:
0005-2728
Subject:
ammonia; ammonium; ammonium chloride; binding sites; enthalpy; entropy; oxidation; oxygen; pH; photosystem II; reaction mechanisms
Abstract:
... Information on binding and rearrangement of pivotal water molecules could support understanding of light-driven water oxidation at the catalytic Mn4CaO5 cluster of photosystem II (PSII). To address this point, the binding of ammonia (NH3)—a possible substrate-water analogue—has been investigated and discussed in the context of putative reaction mechanisms. By time-resolved detection of O2 formatio ...
DOI:
10.1016/j.bbabio.2019.04.005

26. Ammonium Enhances Food Waste Fermentation to High-Value Optically Active l-Lactic acid

Author:
Wenjuan Zhang; Xianbao Xu; Pingfeng Yu; Pengxiao Zuo; Ya He; Hong Chen; Yanan Liu; Gang Xue; Xiang Li; Pedro J. J. Alvarez
Source:
ACS sustainable chemistry & engineering 2019 v.8 no.1 pp. 669-677
ISSN:
2168-0485
Subject:
NAD (coenzyme); ammonium; ammonium nitrogen; batch fermentation; biorefining; food waste; genes; glycolysis; lactic acid; lactic acid bacteria; nitrogen; optical properties; oxidation; pyruvic acid; redox potential; value added
Abstract:
... Fermentation of food waste to l-lactic acid (l-LA), a high value-added platform molecule, is a green approach for resource recovery. However, low yield and optical activity (OA) of l-LA are key limiting factors for such efforts. Here, we report that ammonium addition (300 mg of NH₄⁺-N/L) can double the yield of LA and increase OA of l-LA by fivefold during repeated batch fermentation of food waste ...
DOI:
10.1021/acssuschemeng.9b06532

27. Ammonium Fluoride as a Hydrogen-Disordering Agent for Ice

Author:
Christoph G. Salzmann; Zainab Sharif; Craig L. Bull; Steven T. Bramwell; Alexander Rosu-Finsen; Nicholas P. Funnell
Source:
Journal of physical chemistry 2019 v.123 no.26 pp. 16486-16492
ISSN:
1932-7455
Subject:
ammonium; cooling; fluorides; hydrogen; ice; neutron diffraction; physical chemistry; temperature; topology
Abstract:
... The removal of residual hydrogen disorder from various phases of ice with acid or base dopants at low temperatures has been a focus of intense research for many decades. As an antipode to these efforts, we now show using neutron diffraction that ammonium fluoride (NH₄F) is a hydrogen-disordering agent for the hydrogen-ordered ice VIII. Cooling its hydrogen-disordered counterpart ice VII doped with ...
DOI:
10.1021/acs.jpcc.9b04476

28. Ammonium Sorbed to Zeolite Is Partly Available to Wheat in the First Growth Cycle

Author:
Bente Foereid; Emilio Alvarenga; Julia Szocs; Marianna Makadi
Source:
Agronomy 2019 v.9 no.3 pp. -
ISSN:
2073-4395
Subject:
Chernozems; ammonium; ammonium fertilizers; aqueous solutions; nitrogen; nutrients; sandy soils; sorbents; sorption; stable isotopes; wheat; zeolites
Abstract:
... Sorption could be a way to concentrate nutrients in diluted waste streams to bring more nutrients back to agriculture. However, the sorbed nutrients must be plant available. The aim of this work was to investigate how plant available nitrogen (N) added sorbed to zeolite and is compared to conventionally added N. First, 15N labelled ammonium was sorbed to a sorbent, zeolite, in an aqueous solution. ...
DOI:
10.3390/agronomy9030122

29. Ammonium loading disturbed the microbial food webs in biofilms attached to submersed macrophyte Vallisneria natans

Author:
Lingling Yan; Xiaoying Mu; Bing Han; Songhe Zhang; Changhao Qiu; Okugbe E. Ohore
Source:
Science of the total environment 2019 v.659 pp. 691-698
ISSN:
0048-9697
Subject:
Animalia; Chromista; Nucleariidae; Vallisneria; algae; ammonium; ammonium nitrogen; bacteria; biofilm; community structure; denitrification; eukaryotic cells; exposure duration; food webs; fungi; leaves; macrophytes; microbial communities; oxygen; pH; parasitism; pollution load
Abstract:
... The knowledge about the impacts of ammonium loading on microbial food webs in biofilms attached to submersed macrophytes is limited. In the present study, Illumina sequencing method was employed to investigate bacterial and eukaryotic communities in biofilms attached to leaves of Vallisneria natans (V. natans) exposed to 1–16 mg L−1 NH4+-N for 10 days, and 8 mg L−1 NH4+-N for 21 days. Ammonium loa ...
DOI:
10.1016/j.scitotenv.2018.12.423

30. Ammonium recycling supports toxic Planktothrix blooms in Sandusky Bay, Lake Erie: Evidence from stable isotope and metatranscriptome data

Author:
Justyna J. Hampel; Mark J. McCarthy; Michelle Neudeck; George S. Bullerjahn; Robert Michael L. McKay; Silvia E. Newell
Source:
Harmful algae 2019 v.81 pp. 42-52
ISSN:
1568-9883
Subject:
Microcystis; Planktothrix agardhii; agricultural watersheds; algal blooms; ammonium; enzymes; eutrophication; microbial communities; microcystins; nitrogen; nitrogen content; phosphorus; poisonous algae; pollution load; rivers; stable isotopes; summer; toxicity; urea; Lake Erie
Abstract:
... Sandusky Bay, Lake Erie, receives high nutrient loadings (nitrogen and phosphorus) from the Sandusky River, which drains an agricultural watershed. Eutrophication and cyanobacterial harmful algal blooms (cyanoHABs) persist throughout summer. Planktothrix agardhii is the dominant bloom-forming species and the main producer of microcystins in Sandusky Bay. Non-N2 fixing cyanobacteria, such as Plankt ...
DOI:
10.1016/j.hal.2018.11.011

31. Ammonium regulates Fe deficiency responses by enhancing nitric oxide signaling in Arabidopsis thaliana

Author:
Xiao Fang Zhu; Xiao Ying Dong; Qi Wu; Ren Fang Shen
Source:
Planta 2019 v.250 no.4 pp. 1089-1102
ISSN:
0032-0935
Subject:
Arabidopsis thaliana; ammonium; cell walls; chlorosis; ferric chelate reductases; gene expression regulation; genes; hemicellulose; iron; leaves; mutants; nicotianamine; nitric oxide; nutrient deficiencies; plant root cells; rice; roots; shoots; translocation (plant physiology)
Abstract:
... MAIN CONCLUSION: The accumulation of NH₄⁺ in response to Fe deficiency plays a role not only in the remobilization of Fe from the root cell wall, but also in the transportation of Fe from root to shoot. Ammonium (NH₄⁺) plays an important role in phosphorus-deficiency responses in rice, but its role in responses to Fe deficiency remains unknown. Here, we demonstrate that the accumulation of NH₄⁺ pl ...
DOI:
10.1007/s00425-019-03202-6

32. Ammonium removal from aqueous solutions by fixed-bed column using corncob-based modified biochar

Author:
Lan Huong Nguyen; Thi Mai Vu; Thi Trinh Le; Van Tuyen Trinh; Thi Pha Tran; Huu Tap Van
Source:
Environmental technology 2019 v.40 no.6 pp. 683-692
ISSN:
1479-487X
Subject:
adsorbents; adsorption; ammonium; aqueous solutions; binding sites; biochar; corn cobs; environmental technology; models; nitric acid; sodium chloride; sodium hydroxide
Abstract:
... This study investigated the potential of removing ammonium () from aqueous solutions using corncob based on modified biochar (MBCC) in the fixed-bed column. Corncob biochar was soaked in a mixture of HNO₃ 6.0 M and NaOH 0.3 M to prepare active binding sites for ammonium removal. The effect of initial ammonium concentrations (10–40 mg/L), flow rates (1–9 mL/min) and MBCC fixed-bed heights (8–24 cm) ...
DOI:
10.1080/09593330.2017.1404134

33. Ammonium transformed into nitrous oxide via nitric oxide by Pseudomonas putida Y-9 under aerobic conditions without hydroxylamine as intermediate

Author:
Xuejiao Huang; Yi Xu; Tengxia He; Hongjie Jia; Mi Feng; Shudi Xiang; Shutong Wang; Jiupai Ni; Deti Xie; Zhenlun Li
Source:
Bioresource technology 2019 v.277 pp. 87-93
ISSN:
0960-8524
Subject:
Pseudomonas putida; aerobic conditions; ammonia monooxygenase; ammonium; gene amplification; hydroxylamine; nitric oxide; nitrites; nitrous oxide; oxidation; total nitrogen
Abstract:
... Previous studies have reported that hydroxylamine (NH2OH) is an inevitable intermediate of the ammonium (NH4+) oxidation pathway under aerobic conditions. In this study, Pseudomonas putida Y-9 was found to oxidize ammonium into N2O via NO without the accumulation of NH2OH and NO2− under aerobic conditions. NH2OH was nearly completely transformed into NO2− whether NH4+ was present in the medium, an ...
DOI:
10.1016/j.biortech.2019.01.040

34. Ammonium uptake and assimilation are required for rice defense against sheath blight disease

Author:
W.J. Chi; Z.Y. Wang; J.M. Liu; C. Zhang; Y.H. Wu; Y.J. Bai
Source:
Cereal research communications 2019 v.47 no.1 pp. 98-110
ISSN:
1788-9170
Subject:
Oryza sativa; Thanatephorus cucumeris; ammonium; glutamate-ammonia ligase; glutamine; leaf blight; mutants; nitrates; nitrogen; nutrient use efficiency; paddy soils; plant growth; rice
Abstract:
... Nitrogen (N) is an important nutrient for plant growth and yield production, and rice grown in paddy soil mainly uses ammonium (NH₄⁺) as its N source. Previous studies have shown that N status is tightly connected to plant defense; however, the roles of NH₄⁺ uptake and assimilation in rice sheath blight disease response have not been studied previously. Here, we analyzed the effects of different N ...
DOI:
10.1556/0806.46.2018.056

35. An alkaline pectate lyase D from Dickeya dadantii DCE-01: clone, expression, characterization, and potential application in ramie bio-degumming

Author:
Lifeng Cheng; Shengwen Duan; Ke Zheng; Xiangyuan Feng; Qi Yang; Zhiyuan Liu; Zhengchu Liu; Yuande Peng
Source:
Textile research journal 2019 v.89 no.11 pp. 2075-2083
ISSN:
1746-7748
Subject:
Citrus; Dickeya dadantii; Escherichia coli; amino acids; ammonium; bacteria; calcium; catalytic activity; copper; degumming; enzyme activity; esterification; fabrics; gel chromatography; genes; heat tolerance; iron; lead; pH; pectate lyase; pectins; plasmids; polygalacturonase; ramie; temperature; textile fibers; ultrafiltration; zinc
Abstract:
... Pectinase plays a crucial role in ramie bio-degumming. A pectate lyase gene (pel4J4) from the high-efficiency degumming bacteria Dickeya dadantii DCE-01 of bast fibers was cloned and connected to pET28a, and then the recombinant plasmid was successfully transformed into Escherichia coli BL21(DE3). The pectate lyase (Pel4J4) induced was purified by ultrafiltration and Sephadex G-100 gel chromatogra ...
DOI:
10.1177/0040517518790971

36. An important role of decomposing wood for soil environment with a reference to communities of springtails (Collembola)

Author:
Peter Čuchta; Jiří Kaňa; Václav Pouska
Source:
Environmental monitoring and assessment 2019 v.191 no.4 pp. 222
ISSN:
0167-6369
Subject:
Collembola; Picea; ammonium; bark beetles; carbon; decayed wood; edaphic factors; forests; soil pH; species richness; wind; Czech Republic
Abstract:
... Present study focused on how the presence of decaying wood affects soil environment including its biota. The study was carried out in the montane spruce forest, disturbed by wind and bark beetles in Trojmezná Mt. of the Bohemian Forest in the Czech Republic. According to the results, presence of decomposing wood influenced soil environment in terms of its chemical properties by increasing soil pH ...
DOI:
10.1007/s10661-019-7363-x

37. An in vitro screening system to assess aluminum toxicity in sugarcane (Saccharum spp.) cultivars

Author:
S. J. Snyman; M. Naidoo; M. P. Watt; R. S. Rutherford
Source:
In vitro cellular & developmental biology 2019 v.55 no.4 pp. 403-408
ISSN:
1054-5476
Subject:
Saccharum; agricultural soils; aluminum; ammonium; citrates; crop production; cultivars; culture media; drought; exudation; in vitro studies; inheritance (genetics); lethal concentration 50; mutagenesis; mutagens; nitrates; nitrogen; nutrient use efficiency; plantlets; regrowth; roots; screening; soil pH; sugarcane; toxicity; South Africa
Abstract:
... Mutagenic breeding is an approach being developed especially for those characteristics that are not inherited through conventional genetic hybridization. Soil acidity and aluminum (Al³⁺) toxicity limit sugarcane production, particularly in leached soils in the coastal cultivation regions in South Africa. An in vitro screening procedure was developed based on plantlet re-rooting in Al³⁺-containing ...
DOI:
10.1007/s11627-019-09994-2

38. An innovative anaerobic MBR-reverse osmosis-ion exchange process for energy-efficient reclamation of municipal wastewater to NEWater-like product water

Author:
Jun Gu; Hang Liu; Siyu Wang; Meng Zhang; Yu Liu
Source:
Journal of cleaner production 2019 v.230 pp. 1287-1293
ISSN:
0959-6526
Subject:
ammonium; chemical oxygen demand; energy efficiency; energy recovery; membrane bioreactors; methane; microfiltration; municipal wastewater; organic carbon; phosphates; population growth; reverse osmosis; sludge; urbanization; wastewater treatment; water quality; Singapore
Abstract:
... The rapid population growth and urbanization have led to an increasing need on recycle and reuse of municipal wastewater. In the current practice for high-grade reclaimed water production, municipal wastewater was first treated by conventional biological process, and further purified through microfiltration and reverse osmosis. However, such a multi-stage process has received more and more critiqu ...
DOI:
10.1016/j.jclepro.2019.05.198

39. Anaerobic biodegradation of catechol by sediment microorganisms: Interactive roles of N reduction and S cycling

Author:
Xiong Zheng; Chen Zhou; Zhuolin Liu; Min Long; Yi-Hao Luo; Tengfei Chen; Aura Ontiveros-Valencia; Bruce E. Rittmann
Source:
Journal of cleaner production 2019 v.230 pp. 80-89
ISSN:
0959-6526
Subject:
ammonium; aquifers; benzoquinones; bioavailability; biodegradation; bioremediation; biotransformation; catechol; coal; denitrification; denitrifying microorganisms; electrons; energy; metabolism; microbial communities; mineralization; nitrate reduction; nitrates; nitrites; oxidants; oxidation; petroleum; sediments; sulfate-reducing bacteria; sulfates
Abstract:
... Catechol is one of the central intermediates in the aerobic biodegradation of numerous benzene-based aromatic contaminants derived from coal and petroleum sources as a result of unsustainable production processes. In O2-limiting environments, such as aquifers and sediments, accumulation of dead-end and inhibitory catechol can lead to a complete shutdown of further biodegradation. Thus, O2-independ ...
DOI:
10.1016/j.jclepro.2019.05.058

40. Anaerobic digestion of wheat straw and rape oil cake in a two-stage solid-state system

Author:
Marcel Pohl; Maria Sánchez-Sánchez; Jan Mumme
Source:
Renewable energy 2019 v.141 pp. 359-367
ISSN:
0960-1481
Subject:
ammonium; anaerobic digestion; carbon nitrogen ratio; methane production; rapeseed oil; renewable energy sources; streams; temperature; volatile fatty acids; wheat straw
Abstract:
... In this study, the anaerobic co-digestion of two abundantly available agricultural waste streams, rape oil cake and wheat straw, was investigated using the upflow anaerobic solid-state (UASS) process. The experiment was carried out in two identically constructed UASS systems operated for 154 days at 37 °C and 55 °C, respectively, and at organic loading rates (OLR) of 2.5, 3.5 and 4.5 gVS L−1 d−1. ...
DOI:
10.1016/j.renene.2019.04.021

41. Anammox reactor optimization for the treatment of ammonium rich digestate lagoon supernatant - Step feeding mitigates nitrite inhibition

Author:
Sen Yang; Shengnan Xu; Abdul Mohammed; Bing Guo; Simon Vincent; Nicholas J. Ashbolt; Yang Liu
Source:
International biodeterioration & biodegradation 2019 v.143 pp. 104733
ISSN:
0964-8305
Subject:
activated sludge; ammonia; ammonium; anaerobic ammonium oxidation; batch systems; denitrifying microorganisms; feeding methods; nitrifying bacteria; nitrite nitrogen; nitrites; nitrogen; organic carbon; pollution load; quantitative polymerase chain reaction
Abstract:
... A laboratory-scale anammox integrated fixed-biofilm activated sludge sequencing batch reactor (IFAS-SBR) was operated for 339 days as the post treatment of a nitritation reactor treating ammonium rich digestate lagoon supernatant. By shortening the hydraulic retention time (HRT) from 2.5 d to 1.7 d, the inorganic nitrogen (N) loading rate increased from 0.38 ± 0.00 kg m3 d−1 to 0.61 ± 0.02 kg m−3 ...
DOI:
10.1016/j.ibiod.2019.104733

42. Anatomy of Microscopic Structure of Ethaline Deep Eutectic Solvent Decoded through Molecular Dynamics Simulations

Author:
Supreet Kaur; Akshay Malik; Hemant K. Kashyap
Source:
Journal of physical chemistry 2019 v.123 no.39 pp. 8291-8299
ISSN:
1520-5207
Subject:
X-ray scattering; ammonium; chemical structure; choline; choline chloride; ethylene glycol; hydrogen bonding; molecular dynamics; simulation models; solvents
Abstract:
... Atomistic molecular dynamics simulations have been performed to investigate the microscopic structure of ethaline deep eutectic solvent (DES), a mixture of choline chloride ([Ch][Cl]) and ethylene glycol (EG) in molar ratio of 1:2, respectively. As much as the structure of a DES is derived by the composition of the species present in it, the chemical nature of the hydrogen bond donor species invol ...
DOI:
10.1021/acs.jpcb.9b06624

43. Anion exchange membrane with a novel quaternized ammonium containing long ether substituent

Author:
Naeem Akhtar Qaisrani; Lingling Ma; Jiafei Liu; Manzoor Hussain; Lv Li; Panyue Li; Shoutao Gong; Fengxiang Zhang; Gaohong He
Source:
Journal of membrane science 2019 v.581 pp. 293-302
ISSN:
0376-7388
Subject:
alkali treatment; ambient temperature; ammonium; anion-exchange membranes; fuel cells; hydrophilicity; ion exchange capacity; moieties; sodium hydroxide; trimethylamine
Abstract:
... The anion exchange membranes (AEM) is one of the key components for alkaline electrolyte membrane fuel cells. However, poor alkaline stability and conductivity of the membrane greatly hinders its practical application. Herein, we report a novel 4-(dimethylamino)butyraldehyde diethyl acetal (DABDA) quaternized polysulfone AEM, or PSf-DABDA, which shows improved conductivity and alkaline stability d ...
DOI:
10.1016/j.memsci.2019.03.054

44. Annual dynamics of soil gross nitrogen turnover and nitrous oxide emissions in an alpine shrub meadow

Author:
Xiaoxia Hu; Chunyan Liu; Xunhua Zheng; Michael Dannenmann; Klaus Butterbach-Bahl; Zhisheng Yao; Wei Zhang; Rui Wang; Guangmin Cao
Source:
Soil biology & biochemistry 2019 v.138 pp. 107576
ISSN:
0038-0717
Subject:
ammonium; climate; climate change; ecosystems; freeze-thaw cycles; freezing; greenhouse gas emissions; isotope dilution technique; meadows; mineralization; nitrates; nitrification; nitrogen; nitrogen cycle; nitrous oxide; nitrous oxide production; shrubs; topsoil; China
Abstract:
... Soil nitrogen (N) transformations play a vital role in maintaining grassland productivity and influence nitrous oxide (N₂O) emissions. To evaluate annual dynamics of soil gross N turnover and its effects on N₂O emissions in typical grasslands, we conducted year-round measurements of soil gross N turnover rates, inorganic N pool sizes and N₂O fluxes in an alpine shrub meadow of the Qinghai–Tibet Pl ...
DOI:
10.1016/j.soilbio.2019.107576

45. Application of Optimum N Through Different Fertilizers Alleviate NH₄⁺-N, NO₃–N and Total Nitrogen Losses in the Surface Runoff and Leached Water and Improve Nitrogen Use Efficiency of Rice Crop in Erhai Lake Basin, China

Author:
Arif Husain; Muhammad Atif Muneer; Wu Fan; Yin Gao-Fei; Shen Shi-Zhou; Wang Feng; Li Yuan; Zhang Ke-Qiang
Source:
Communications in soil science and plant analysis 2019 v.50 no.6 pp. 716-738
ISSN:
1532-2416
Subject:
ammonium; ammonium nitrogen; crop rotation; crops; faba beans; grain yield; lakes; mineral fertilizers; nitrate nitrogen; nitrates; nitrogen; nonpoint source pollution; nutrient use efficiency; nutrition; organic fertilizers; pollution load; rice; runoff; slow-release fertilizers; total nitrogen; urea; water flow; water quality; watersheds; China
Abstract:
... Non-point source pollution from the Agri-sector (especially nitrogen (N)) due to the application of conventional urea with heavy rates not only depleted the water quality of Erhai Lake but also declined the nitrogen use efficiency (NUE) of different crops grown in the Erhai Lake Basin, Dali, Yunnan, China. It is imperative to mitigate the total nitrogen and its forms (nitrate (NO₃⁻)-N and ammonium ...
DOI:
10.1080/00103624.2019.1589482

46. Application of a novel molecular technique to characterise the effect of settling on microbial community composition of activated sludge

Author:
Luong N. Nguyen; Audrey S. Commault; Md Abu Hasan Johir; Heriberto Bustamante; Robert Aurisch; Rebecca Lowrie; Long D. Nghiem
Source:
Journal of environmental management 2019 v.251 pp. 109594
ISSN:
0301-4797
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Chloroflexi; Firmicutes; Nitrospirae; Proteobacteria; Spirochaetae; Verrucomicrobia; activated sludge; ammonium; community structure; foaming; gravity; microbial communities; microorganisms; municipal wastewater; nitrification; wastewater treatment
Abstract:
... Activated sludge (AS) and return activated sludge (RAS) microbial communities from three full-scale municipal wastewater treatment plants (denoted plant A, B and C) were compared to assess the impact of sludge settling (i.e. gravity thickening in the clarifier) and profile microorganisms responsible for nutrient removal and reactor foaming. The results show that all three plants were dominated wit ...
DOI:
10.1016/j.jenvman.2019.109594

47. Application of different single extraction procedures for assessing the bioavailability of heavy metal(loid)s in soils from overlapped areas of farmland and coal resources

Author:
Ping Luo; Xin Xiao; Xiaoxuan Han; Yu Ma; Xiaofei Sun; Jiachao Jiang; Hui Wang
Source:
Environmental science and pollution research international 2019 v.26 no.15 pp. 14932-14942
ISSN:
0944-1344
Subject:
EDTA (chelating agent); acetic acid; aerial parts; agricultural land; ammonium; ammonium acetate; arsenic; bioaccumulation factor; bioavailability; cadmium; chromium; citric acid; coal; copper; crops; foliar uptake; heavy metals; lead; risk; roots; soil; straw; tissues; wheat; zinc; China
Abstract:
... Heavy metal(loid) extraction from soils in overlapped areas of farmland and coal resources (OAFCR) is crucial in understanding heavy metal bioavailability in soil and the subsequent risks to crops and consumers. However, limited attention has been paid to the extraction procedure of heavy metal(loid)s in OAFCR soils in the research. This study therefore explored different single and mixed extracti ...
DOI:
10.1007/s11356-019-04833-8

48. Applications of 2D MXenes in energy conversion and storage systems

Author:
Jinbo PangJ. P. and R. G. M. contributed equally to this work.; Rafael G. Mendes; Alicja Bachmatiuk; Liang Zhao; Huy Q. Ta; Thomas Gemming; Hong Liu; Zhongfan Liu; Mark H. Rummeli
Source:
Chemical Society reviews 2019 v.48 no.1 pp. 72-133
ISSN:
1460-4744
Subject:
alloys; ammonium; batteries; carbides; carbon dioxide; catalysts; chromium; dyes; electrochemistry; electrodes; energy conversion; fuel production; graphene; hydrogen production; molybdenum; nitrides; nitrogen; photocatalysis; pollutants; vanadium; wastes
Abstract:
... Transition metal carbides and nitrides (MXenes), a family of two-dimensional (2D) inorganic compounds, are materials composed of a few atomic layers of transition metal carbides, nitrides, or carbonitrides. Ti₃C₂, the first 2D layered MXene, was isolated in 2011. This material, which is a layered bulk material analogous to graphite, was derived from its 3D phase, Ti₃AlC₂ MAX. Since then, material ...
DOI:
10.1039/c8cs00324f

49. Aqueous solution discharge of cylindrical lithium-ion cells

Author:
James Shaw-Stewart; Anna Alvarez-Reguera; Agata Greszta; James Marco; Maryam Masood; Rob Sommerville; Emma Kendrick
Source:
Sustainable materials and technologies 2019 v.22 pp. e00110
ISSN:
2214-9937
Subject:
ammonium; aqueous solutions; bromides; chlorides; corrosion; electric vehicles; electrochemistry; energy; energy density; iodides; lithium batteries; potassium; recycling; saline water; sodium; sodium hydroxide; sodium thiosulfate; solutes; wastes
Abstract:
... The development of mass-market electric vehicles (EVs) using lithium-ion batteries (LIBs) is helping to propel growth in LIB usage, but end-of-life strategies for LIBs are not well developed. An important aspect of waste LIB processing is the stabilisation of such high energy-density devices, and energy discharge is an obvious way to achieve this. Salt-water electrochemical discharge is often ment ...
DOI:
10.1016/j.susmat.2019.e00110

50. Arbuscular Mycorrhizal Fungi Alter the Community Structure of Ammonia Oxidizers at High Fertility via Competition for Soil NH4+

Author:
Stavros D. Veresoglou; Erik Verbruggen; Olga Makarova; India Mansour; Robin Sen; Matthias C. Rillig
Source:
Microbial ecology 2019 v.78 no.1 pp. 147-158
ISSN:
0095-3628
Subject:
Plantago lanceolata; ammonia; ammonium; bacteria; community structure; mycorrhizal fungi; nitrification; nitrogen; oxidants; plant growth; rhizosphere; soil; soil sampling; vesicular arbuscular mycorrhizae
Abstract:
... Nitrification represents a central process in the cycling of nitrogen (N) which in high-fertility habitats can occasionally be undesirable. Here, we explore how arbuscular mycorrhiza (AM) impacts nitrification when N availability is not limiting to plant growth. We wanted to test which of the mechanisms that have been proposed in the literature best describes how AM influences nitrification. We ma ...
DOI:
10.1007/s00248-018-1281-2