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You searched for: Journal name Bioresource technology Remove constraint Journal name: Bioresource technology Subject term cations Remove constraint Subject term: cations
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1. Adsorption of metal on pineapple leaf biochar: Key affecting factors, mechanism identification, and regeneration evaluation

Author:
Kesinee Iamsaard; Chih-Huang Weng; Li-Ting Yen; Jing-Hua Tzeng; Chakkrit Poonpakdee; Yao-Tung Lin
Source:
Bioresource technology 2022 v.344 pp. 126131
ISSN:
0960-8524
Subject:
Fourier transform infrared spectroscopy; X-radiation; X-ray photoelectron spectroscopy; adsorbents; adsorption; biochar; cation exchange; cations; leaves; pineapples; sorption isotherms; technology; wastewater
Abstract:
... Although tremendous works have been done on metal adsorption via biochar, mechanisms responsible for metal adsorption remain uncertain. This is the first work that provides direct evidence on the identification of Ni(II), Zn(II), and Cu(II) adsorption mechanisms on pineapple leaf biochar (PLB) using surface characteristics analyses, including X-ray photoelectron spectroscope (XPS), Fourier transfo ...
DOI:
10.1016/j.biortech.2021.126131

2. Enhanced removal of Cr(VI) by cation functionalized bamboo hydrochar

Author:
Yu-Nan Zhang; Jian-Zhong Guo; Chunzheng Wu; Wei-Wei Huan; Lin Chen; Bing Li
Source:
Bioresource technology 2022 v.347 pp. 126703
ISSN:
0960-8524
Subject:
acid treatment; adsorbents; amination; bamboos; cations; epoxides; free radicals; heavy metals; hydrochars; hydrochloric acid; pH; polymerization; sorption; wastewater; wastewater treatment
Abstract:
... Chemical modification on hydrochars can significantly improve their ability of removing heavy metal ions from wastewater, but so far no research has focused on the chemical modification through free radical reaction. In this work, a cation functionalized hydrochar (CFHC) bearing − N⁺H₂R was synthesized by grafting-polymerization of glycidyl methacrylate (GMA) onto bamboo hydrochar under initiation ...
DOI:
10.1016/j.biortech.2022.126703

3. An innovative cation regulation-based anaerobic fermentation strategy for enhancing short-chain fatty acids production from waste activated sludge: Metal ion removal coupled with Na+-regulation

Author:
Junguo He; Heliang Pang; Xinlei Pan; Yanshi Zheng; Ling Wang; Jie Xu; Lin Li; Zhongsen Yan
Source:
Bioresource technology 2021 v.331 pp. 124921
ISSN:
0960-8524
Subject:
acetates; activated sludge; cation exchange resins; cations; fermentation; hydrolysis; liquids; polymers; propionic acid; solubilization
Abstract:
... This study proposed a cation-regulation strategy based on metal ion removal coupled Na⁺-regulation for enhancing anaerobic fermentation of waste activated sludge. The optimal treatment condition was: cation-exchange resin dosage of 1.75 g/g SS for 1-day treatment, followed by Na⁺-enhanced anaerobic fermentation at NaCl concentration of 20 g/L. The CER induced sludge solubilization and the Na⁺-regu ...
DOI:
10.1016/j.biortech.2021.124921

4. Alginate to simulate biofouling in submerged fluidized ceramic membrane reactor: Effect of solution pH and ionic strength

Author:
Hyemin Lee; Rizwan Ahmad; Jeonghwan Kim
Source:
Bioresource technology 2020 v.302 pp. 122813
ISSN:
0960-8524
Subject:
biofouling; calcium; cations; ceramics; copper; electrostatic interactions; fluidized beds; ionic strength; moieties; neutralization; pH; sodium alginate; wastewater
Abstract:
... Membrane fouling was investigated experimentally by fluidizing non-adsorbed plastic scouring media on flat-tubular ceramic membrane treating a sodium alginate solution as a representative of polysaccharides in wastewater. Fouling rate increased with set-point permeate flux, but it was remarkably reduced by fluidizing the scouring agent regardless of the flux applied. Higher solution pH resulted in ...
DOI:
10.1016/j.biortech.2020.122813

5. Cation exchange resin-induced hydrolysis for improving biodegradability of waste activated sludge: Characterization of dissolved organic matters and microbial community

Author:
Heliang Pang; Yiwen Chen; Junguo He; Dabin Guo; Xinlei Pan; Yingqun Ma; Fangshu Qu; Jun Nan
Source:
Bioresource technology 2020 v.302 pp. 122870
ISSN:
0960-8524
Subject:
activated sludge; amino acids; bacteria; biodegradability; biodegradation; carbohydrates; cation exchange; cation exchange resins; cations; community structure; humic acids; hydrolysis; microbial communities; polymers; proteins; solubilization; volatile fatty acids
Abstract:
... This study reported an efficient and green approach towards facilitating hydrolysis of waste activated sludge (WAS) using cation exchange resin (CER) as a recyclable additive. Through CER-mediated removal of multivalent cations, WAS flocs were disintegrated into small particles with extracellular polymeric substance (EPS) solubilization. At CER dosage of 1.75 g/g SS, SCOD increased to 2579 mg/L (S ...
DOI:
10.1016/j.biortech.2020.122870

6. Ionic liquid based pretreatment of lignocellulosic biomass for enhanced bioconversion

Author:
Zeba Usmani; Minaxi Sharma; Pratishtha Gupta; Yevgen Karpichev; Nicholas Gathergood; Rajeev Bhat; Vijai Kumar Gupta
Source:
Bioresource technology 2020 v.304 pp. 123003
ISSN:
0960-8524
Subject:
biofuels; biomass; biorefining; biotransformation; cations; economies of scale; fractionation; green chemistry; hydrolysis; ionic liquids; lignocellulose; toxicity; volatile organic compounds
Abstract:
... Lignocellulosic biomass is the most plentiful renewable biomolecule and an alternative bioresource for the production of biofuels and biochemicals in biorefineries. But biomass recalcitrance is a bottleneck in their usage, thus necessitating their pretreatment for hydrolysis. Most pretreatment technologies, result in toxic by-products or have lower yield. Ionic liquids (ILs) have successfully adva ...
DOI:
10.1016/j.biortech.2020.123003

7. Novel betaine-amino acid based natural deep eutectic solvents for enhancing the enzymatic hydrolysis of corncob

Author:
Yuan Liang; Wenjing Duan; Xiaoxi An; Yingyun Qiao; Yuanyu Tian; Haifeng Zhou
Source:
Bioresource technology 2020 v.310 pp. 123389
ISSN:
0960-8524
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; amino acids; anions; betaine; biomass; cations; cellulose; corn cobs; digestibility; enzymatic hydrolysis; lignin; nuclear magnetic resonance spectroscopy; solubility; solvents; water content; xylan
Abstract:
... A novel natural deep eutectic solvent (NDES) with water content ranging from 65 to 93 wt%, in which betaine (Bet) acts as the cation and amino acids (AAs) as the anions, was prepared by a simple and green chemical route. [Bet][AA] NDES showed excellent xylan and lignin solubility, however, scare cellulose solubility. A mild and facile pretreatment process with [Bet][AA] NDES was carried out at 60  ...
DOI:
10.1016/j.biortech.2020.123389

8. Switchable solvent N, N, N′, N′-tetraethyl-1, 3-propanediamine was dissociated into cationic surfactant to promote cell disruption and lipid extraction from wet microalgae for biodiesel production

Author:
Jun Cheng; Hao Guo; Yi Qiu; Ze Zhang; Yuxiang Mao; Lei Qian; Weijuan Yang; Ji-Yeon Park
Source:
Bioresource technology 2020 v.312 pp. 123607
ISSN:
0960-8524
Subject:
Nannochloropsis; biodiesel; cationic surfactants; cations; chloroform; electrostatic interactions; fatty acid methyl esters; fractal dimensions; hexane; microalgae; phospholipids; solvents; technology; transesterification
Abstract:
... Switchable solvent N, N, N', N'-tetraethyl-1,3-propanediamine (TEPDA) was proposed to extract lipids from wet Nannochloropsis oceanica with a 5% higher extraction efficiency than chloroform–methanol. It was found that TEPDA acted mainly as an organic solvent to soften and dissolve lipids, while a small amount of TEPDA was dissociated into tertiary amine ion, i.e.,(C₂H₅)₂N-(CH₂)₃-NH⁺(C₂H₅)₂. This c ...
DOI:
10.1016/j.biortech.2020.123607

9. Carbon dioxide sequestration and methane production promotion by wollastonite in sludge anaerobic digestion

Author:
Yan Zhang; Lihui Zhang; He Liu; Linlin Gong; Qianqian Jiang; Hongbo Liu; Bo Fu
Source:
Bioresource technology 2019 v.272 pp. 194-201
ISSN:
0960-8524
Subject:
calcium; calcium silicate; carbon dioxide; carbon sequestration; carbonation; cations; methane; methane production; sludge
Abstract:
... This study investigated the feasibility and performance of simultaneous in-situ CO₂ sequestration and CH₄ production promotion by wollastonite addition in sludge AD. A maximum CH₄ yield increment of 30.8% and maximum methane production rate increment of 64.9% with wollastonite addition at dosage of 16.25 g/L were achieved. CO₂ was efficient sequestered by wollastonite addition and resulted in a hi ...
DOI:
10.1016/j.biortech.2018.10.004

10. Efficient simultaneous removal of cadmium and arsenic in aqueous solution by titanium-modified ultrasonic biochar

Author:
Mingke Luo; Hai Lin; Yinhai He; Bing Li; Yingbo Dong; Liang Wang
Source:
Bioresource technology 2019 v.284 pp. 333-339
ISSN:
0960-8524
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorption; anions; aqueous solutions; arsenic; biochar; biosorbents; cadmium; cations; energy-dispersive X-ray analysis; ion exchange; pH; scanning electron microscopy; sorbents; surface area; titanium dioxide; ultrasonics; wastewater
Abstract:
... Simultaneous removal of cations and anions in wastewater has always been a great concerned environmental problem. In this study, a friendly and inexpensive biosorbent to simultaneously remove Cd(II) and As(V) from aqueous solution was synthesized by ultrasonic biochar and nanoscale TiO2 (TD), and the obtained sorbent was named as BCTD. The maximum sorption capacities of Cd (72.62 mg/g) and As (118 ...
DOI:
10.1016/j.biortech.2019.03.108

11. Biochar enhanced ethanol and butanol production by Clostridium carboxidivorans from syngas

Author:
Xiao Sun; Hasan K. Atiyeh; Ajay Kumar; Hailin Zhang; Ralph S. Tanner
Source:
Bioresource technology 2018 v.265 no. pp. 128-138
ISSN:
0960-8524
Subject:
Clostridium; Panicum virgatum; biochar; buffering capacity; butanol; carbon monoxide; cation exchange capacity; cations; ethanol; ethanol production; fermentation; forage; hydrogen; moieties; pH; poultry manure; synthesis gas; yeast extract
Abstract:
... Biochar has functional groups, pH buffering capacity and cation exchange capacity (CEC) that can be beneficial in syngas fermentation. This study examined the properties of biochar made from switchgrass (SGBC), forage sorghum (FSBC), red cedar (RCBC) and poultry litter (PLBC), and their effects on ethanol and butanol production from syngas using Clostridium carboxidivorans. Experiments were perfor ...
DOI:
10.1016/j.biortech.2018.05.106
CHORUS:
10.1016/j.biortech.2018.05.106

12. Cell immobilization on 3D-printed matrices: A model study on propionic acid fermentation

Author:
Fabricio dos Santos Belgrano; Olaf Diegel; Nei Pereira; Rajni Hatti-Kaul
Source:
Bioresource technology 2018 v.249 pp. 777-782
ISSN:
0960-8524
Subject:
Propionibacterium; adsorption; cations; culture media; fermentation; glucose; models; nylon; polyethyleneimine; propionic acid
Abstract:
... This study uses three-dimensional (3D) printing technology as a tool for designing carriers for immobilization of microbial cells for bioprocesses. Production of propionic acid from glucose by immobilized Propionibacterium sp. cells was studied as a model system. For cell adsorption, the 3D-printed nylon beads were added to the culture medium during 3 rounds of cell cultivation. Cell adsorption an ...
DOI:
10.1016/j.biortech.2017.10.087

13. Disintegration of waste activated sludge with composite ferrate solution: Sludge reduction and settleability

Author:
Yanping Zhang; Ruiqi Hu; Jiayu Tian; Tiantian Li
Source:
Bioresource technology 2018 v.267 pp. 126-132
ISSN:
0960-8524
Subject:
activated sludge; calcium; cations; iron; organic acids and salts; synergism
Abstract:
... Sludge reduction has been a key issue in waste activated sludge (WAS) treatment. In this study, composite ferrate solution (CFS) has been used to disintegrate WAS. The results showed that CFS could effectively disrupt sludge flocs and cells and caused the release of intracellular matter such as SCOD, cations and organic acids. These results showed that the sludge disintegration process could be di ...
DOI:
10.1016/j.biortech.2018.07.027

14. Modeling methane production in anaerobic forward osmosis bioreactor using a modified anaerobic digestion model No. 1

Author:
Young-Chae Song; Minseok Kim; Hokyong Shon; Veeriah Jegatheesan; Suhan Kim
Source:
Bioresource technology 2018 v.264 pp. 211-218
ISSN:
0960-8524
Subject:
ammonia; anaerobic digestion; biomass; cations; membrane bioreactors; methane production; microfiltration; models; molecular weight; nitrogen; osmosis; ultrafiltration
Abstract:
... Anaerobic membrane bioreactor (AnMBR) using microfiltration (MF) or ultrafiltration (UF) membranes was introduced to enhance poor biomass retention of conventional anaerobic digestion (CAD). Recently, forward osmosis (FO) membrane have been applied to AnMBR, which is called AnFOMBR. FO membrane assures not only high biomass retention but also high removal efficiency for low molecular weight (LMW) ...
DOI:
10.1016/j.biortech.2018.04.125

15. Sorption of norfloxacin, sulfamerazine and oxytetracycline by KOH-modified biochar under single and ternary systems

Author:
Jiwei Luo; Xue Li; Chengjun Ge; Karin Müller; Huamei Yu; Peng Huang; Jiatong Li; Daniel C.W. Tsang; Nanthi S. Bolan; Jörg Rinklebe; Hailong Wang
Source:
Bioresource technology 2018 v.263 pp. 385-392
ISSN:
0960-8524
Subject:
aquatic environment; biochar; cations; electrostatic interactions; norfloxacin; oxytetracycline; sorption; sulfamerazine; water pollution
Abstract:
... Pollution of water by single antibiotics has been investigated in depth. However, in reality, a wide range of different contaminants is often mixed in the aquatic environment (contaminant cocktail). Here, single and competitive sorption dynamics of ionizable norfloxacin (NOR), sulfamerazine (SMR) and oxytetracycline (OTC) by both pristine and modified biochars were investigated. Sorption kinetics ...
DOI:
10.1016/j.biortech.2018.05.022

16. Challenges of non-flocculating Saccharomyces cerevisiae haploid strain against inhibitory chemical complex for ethanol production

Author:
Prihardi Kahar; Eny Ida Riyanti; Hiromi Otsuka; Hana Matsumoto; Chie Kihira; Chiaki Ogino; Akihiko Kondo
Source:
Bioresource technology 2017 v.245 pp. 1436-1446
ISSN:
0960-8524
Subject:
NAD (coenzyme); Saccharomyces cerevisiae; amino acids; cations; cell viability; ethanol production; fermentation; gene expression; gene expression regulation; genes; haploidy; polyamines; transporters; yeasts
Abstract:
... This study provides insight observation based on the gene expression and the metabolomic analysis of the natural robust yeast Saccharomyces cerevisiae NBRC849 during the fermentation in the medium containing inhibitory chemical complexes (ICC) at different concentrations. The tolerance mechanisms involved in the strain might have existed through the upregulation of genes involved in NAD(H)/NADP(H) ...
DOI:
10.1016/j.biortech.2017.06.009

17. Characterization of changes in floc morphology, extracellular polymeric substances and heavy metals speciation of anaerobically digested biosolid under treatment with a novel chelated-Fe2+ catalyzed Fenton process

Author:
Juanjuan He; Peng Yang; Weijun Zhang; Bingdi Cao; Hua Xia; Xi Luo; Dongsheng Wang
Source:
Bioresource technology 2017 v.243 pp. 641-651
ISSN:
0960-8524
Subject:
biopolymers; cations; chelating agents; dewatering; free radicals; heavy metals; sludge; solubilization
Abstract:
... A novel chelated-Fe2+ catalyzed Fenton process (CCFP) was developed to enhance dewatering performance of anaerobically digested biosolid, and changes in floc morphology, extracellular polymeric substances (EPS) and heavy metals speciation were also investigated. The results showed that addition of chelating agents caused EPS solubilization by binding multivalent cations. Like traditional Fenton, C ...
DOI:
10.1016/j.biortech.2017.06.180

18. Esters production via carboxylates from anaerobic paper mill wastewater treatment

Author:
Carlos I. Cabrera-Rodríguez; Mónica Moreno-González; Florence A. de Weerd; Vidhvath Viswanathan; Luuk A.M. van der Wielen; Adrie J.J. Straathof
Source:
Bioresource technology 2017 v.237 pp. 186-192
ISSN:
0960-8524
Subject:
acetates; adsorption; anaerobic digestion; anion exchange resins; anions; bicarbonates; butyrates; calcium; cations; desorption; esterification; lactic acid; methanol; pH; propionic acid; pulp and paper mills; wastewater; wastewater treatment
Abstract:
... This paper describes a new option for integrated recovery and esterification of carboxylates produced by anaerobic digestion at a pH above the pKa. The carboxylates (acetate, propionate, butyrate, valerate and lactate) are recovered using a strong anion exchange resin in the bicarbonate form, and the resin is regenerated using a CO2-expanded alcohol technique, which allows for low chemicals consum ...
DOI:
10.1016/j.biortech.2017.02.030

19. Feedwater pH affects phosphorus transformation during hydrothermal carbonization of sewage sludge

Author:
Tao Wang; Yunbo Zhai; Yun Zhu; Chuan Peng; Tengfei Wang; Bibo Xu; Caiting Li; Guangming Zeng
Source:
Bioresource technology 2017 v.245 pp. 182-187
ISSN:
0960-8524
Subject:
fractionation; X-ray diffraction; inorganic phosphorus; calcium; sewage sludge; cations; hydrothermal carbonization; energy-dispersive X-ray analysis; apatite; aluminum; pH; hydrochars; temperature
Abstract:
... In this study, the effect of feedwater pH (3–11) on phosphorus (P) transformation during the hydrothermal carbonization (HTC) of sewage sludge (SS) was investigated at a temperature range of 200–260°C. The HTC significantly accumulated P in the hydrochar. Different feedwater pH stimulated the transformation of various forms of P. An acidic feedwater pH promoted the transformation of apatite phosph ...
DOI:
10.1016/j.biortech.2017.08.114

20. Maximization of monomeric C5 sugars from wheat bran by using mesoporous ordered silica catalysts

Author:
Nuria Sánchez-Bastardo; Esther Alonso
Source:
Bioresource technology 2017 v.238 pp. 379-388
ISSN:
0960-8524
Subject:
arabinose; arabinoxylan; catalysts; cations; furfural; hemicellulose; hydrolysis; porous media; silica; temperature; wheat bran; xylooligosaccharides; xylose
Abstract:
... The hydrolysis process of a real fraction of arabinoxylans derived from wheat bran was studied. The influence of catalyst type and loading, reaction time and different metal cations were discussed in terms of the hydrolysis yield of arabinose and xylose oligomers as well as the formation of furfural as degradation product. A high yield of arabinoxylans into the corresponding monomeric sugars (96 a ...
DOI:
10.1016/j.biortech.2017.04.062

21. Membrane fouling by sodium alginate in high salinity conditions to simulate biofouling during seawater desalination

Author:
Amine Charfi; Hoseok Jang; Jeonghwan Kim
Source:
Bioresource technology 2017 v.240 pp. 106-114
ISSN:
0960-8524
Subject:
algae; biofouling; calcium; cations; desalination; microfiltration; models; salinity; seawater; sodium; sodium alginate
Abstract:
... This study aims to better understand biofouling by algal organic matters (AOM) during seawater pretreatment by microfiltration (MF). To simulate AOM biofouling, sodium alginate (SA) solutions with three different concentrations (2, 20 and 50ppm) were filtered in dead-end mode with MF membrane. A modelling approach with blocking laws was used to identify the fouling mechanisms behind flux decline w ...
DOI:
10.1016/j.biortech.2017.02.086

22. Sulfur balance of sulfur dioxide-ethanol-water fractionation of sugarcane straw

Author:
Xiang You; Adriaan van Heiningen; Herbert Sixta; Mikhail Iakovlev
Source:
Bioresource technology 2017 v.241 pp. 998-1002
ISSN:
0960-8524
Subject:
acidity; cations; distillation; fractionation; lignin; lignosulfonates; neutralization; pulp; pulping; straw; sugarcane; sulfites; sulfur; sulfur dioxide; wood
Abstract:
... The sulfur balance of SO2-ethanol-water (AVAP®) fractionation of sugarcane (SC) straw was investigated. Hydrogen sulfite and sulfite anions are nearly absent in the liquors, despite cations present in straw, whose effect is thus limited to neutralization of lignosulfonic acids decreasing the acidity. Higher degree of sulfonation was observed for dissolved straw lignin compared to wood lignin (0.8– ...
DOI:
10.1016/j.biortech.2017.06.047

23. Thermodynamics of binding interactions between extracellular polymeric substances and heavy metals by isothermal titration microcalorimetry

Author:
Peng Yan; Jia-Shuai Xia; You-Peng Chen; Zhi-Ping Liu; Jin-Song Guo; Yu Shen; Cheng-Cheng Zhang; Jing Wang
Source:
Bioresource technology 2017 v.232 pp. 354-363
ISSN:
0960-8524
Subject:
activated sludge; adsorption; binding sites; calorimetry; cations; electrostatic interactions; enthalpy; environmental factors; heavy metals; metal ions; proteins; titration; wastewater treatment
Abstract:
... Extracellular polymeric substances (EPS) play a crucial role in heavy metal bio-adsorption using activated sludge, but the interaction mechanism between heavy metals and EPS remains unclear. Isothermal titration calorimetry was employed to illuminate the mechanism in this study. The results indicate that binding between heavy metals and EPS is spontaneous and driven mainly by enthalpy change. Extr ...
DOI:
10.1016/j.biortech.2017.02.067

24. The effect of pH on phosphorus availability and speciation in an aquaponics nutrient solution

Author:
Brunno da Silva Cerozi; Kevin Fitzsimmons
Source:
Bioresource technology 2016 v.219 pp. 778-781
ISSN:
0960-8524
Subject:
alkalinity; aquaponics; calcium phosphates; cations; chemical speciation; nutrient solutions; nutrient uptake; nutrients; organic matter; pH; phosphorus; roots
Abstract:
... The interaction between the main ions in aquaponics nutrient solutions affects chemical composition and availability of nutrients, and nutrient uptake by plant roots. This study determined the effect of pH on phosphorus (P) speciation and availability in an aquaponics nutrient solution and used Visual MINTEQ to simulate P species and P activity. In both experimental and simulated results, P availa ...
DOI:
10.1016/j.biortech.2016.08.079

25. Adsorption behavior comparison of trivalent and hexavalent chromium on biochar derived from municipal sludge

Author:
Tan Chen; Zeyu Zhou; Sai Xu; Hongtao Wang; Wenjing Lu
Source:
Bioresource technology 2015 v.190 pp. 388-394
ISSN:
0960-8524
Subject:
adsorption; biochar; cadmium; calcium; cations; chromium; heavy metals; magnesium; organic matter; pH; sludge
Abstract:
... In this work, static equilibrium experiments were conducted to distinguish the adsorption performance between the two valence states of chromium on biochar derived from municipal sludge. The removal capacity of Cr(VI) is lower than 7mg/g at the initial chromium concentration range of 50–200mg/L, whereas that of Cr(III) higher than 20mg/g. It indicates that Cr(III) is much easier to be stabilized t ...
DOI:
10.1016/j.biortech.2015.04.115

26. Building a better Mousetrap I: Using Design of Experiments with unconfounded ions to discover superior media for growth and lipid production by Chlorella sp. EN1234

Author:
Patrick C. Hallenbeck; Melanie Grogger; Megan Mraz; Donald Veverka
Source:
Bioresource technology 2015 v.184 pp. 82-89
ISSN:
0960-8524
Subject:
Chlorella; ammonium compounds; anions; biomass production; cations; chlorides; culture media; experimental design; lipid content; lipids; nitrates; nitrogen; nitrogen content; phosphates; potassium; sodium
Abstract:
... An unconfounded Scheffe Mix approach was used to probe important ions and their interactions in supporting biomass and lipid production by Chlorella sp. EN1234. Six major cations and anions; NH4+, NO3−, Na+, K+ PO4− and Cl− were examined. Piepel plots and RSM analysis showed that in a number of cases, the major media anions PO4− and Cl− negatively influence final cell densities, and that maximal c ...
DOI:
10.1016/j.biortech.2014.10.144

27. Catalytic conversion of cellulosic biomass to ethylene glycol: Effects of inorganic impurities in biomass

Author:
Jifeng Pang; Mingyuan Zheng; Ruiyan Sun; Lei Song; Aiqin Wang; Xiaodong Wang; Tao Zhang
Source:
Bioresource technology 2015 v.175 pp. 424-429
ISSN:
0960-8524
Subject:
adverse effects; biomass; calcium; catalysts; cations; cellulose; ethylene glycol; hydrolysis; iron; pH
Abstract:
... The effects of typical inorganic impurities on the catalytic conversion of cellulose to ethylene glycol (EG) were investigated, and the mechanism of catalyst deactivation by certain impurities were clarified. It was found that most impurities did not affect the EG yield, but some non-neutral impurities or Ca and Fe ions greatly decreased the EG yield. Conditional experiments and catalyst character ...
DOI:
10.1016/j.biortech.2014.10.076

28. Design and application of a novel ionic liquid with the property of strengthening coenzyme regeneration for whole-cell bioreduction in an ionic liquid-distilled water medium

Author:
Jun Li; Pu Wang; Jin Huang; Jia Sun
Source:
Bioresource technology 2015 v.175 pp. 42-50
ISSN:
0960-8524
Subject:
anions; catalytic activity; cationic surfactants; cations; cysteine; ethanol; ionic liquids; tetramethylammonium compounds
Abstract:
... Focusing on the task-specific properties of ionic liquids (ILs), a novel IL was designed by combining the quaternary ammonium cationic surfactant, [N1,1,1,1]+, with benign amino acid anion ([Cys]−), and was successfully employed in whole-cell-catalyzed bioreduction by Trichodermaasperellum ZJPH0810 using an ionic liquid-distilled water medium. As expected, based on better understanding about the e ...
DOI:
10.1016/j.biortech.2014.10.059

29. Efficient and product-controlled depolymerization of lignin oriented by metal chloride cooperated with Pd/C

Author:
Riyang Shu; Jinxing Long; Zhengqiu Yuan; Qi Zhang; Tiejun Wang; Chenguang Wang; Longlong Ma
Source:
Bioresource technology 2015 v.179 pp. 84-90
ISSN:
0960-8524
Subject:
Lewis acids; catalysts; catalytic activity; cations; depolymerization; lignin; phenols
Abstract:
... An efficient lignin depolymerization process with highly controllable product distribution was presented using metal chloride (MClx) cooperated with Pd/C. The catalytic performances of MClx were investigated. The effect of reaction conditions on the lignin depolymerization and products distribution were also studied. Results showed that more than 35.4% yield of phenolic monomer including 7.8% phen ...
DOI:
10.1016/j.biortech.2014.12.021

30. High organic loading treatment for industrial molasses wastewater and microbial community shifts corresponding to system development

Author:
Kyohei Kuroda; Tomoaki Chosei; Nozomi Nakahara; Masashi Hatamoto; Takashi Wakabayashi; Toshikazu Kawai; Nobuo Araki; Kazuaki Syutsubo; Takashi Yamaguchi
Source:
Bioresource technology 2015 v.196 pp. 225-234
ISSN:
0960-8524
Subject:
acidification; anions; bacteria; biochemical oxygen demand; biological treatment; cations; chemical oxygen demand; community structure; microbial communities; molasses; organic compounds; sludge; wastewater; wastewater treatment
Abstract:
... Molasses wastewater contains high levels of organic compounds, cations, and anions, causing operational problems for anaerobic biological treatment. To establish a high organic loading treatment system for industrial molasses wastewater, this study designed a combined system comprising an acidification tank, a thermophilic multi-stage (MS)-upflow anaerobic sludge blanket (UASB) reactor, mesophilic ...
DOI:
10.1016/j.biortech.2015.07.070

31. Hydrolysis of cellulose catalyzed by quaternary ammonium perrhenates in 1-allyl-3-methylimidazolium chloride

Author:
Jingyun Wang; Mingdong Zhou; Yuguo Yuan; Quan Zhang; Xiangchen Fang; Shuliang Zang
Source:
Bioresource technology 2015 v.197 pp. 42-47
ISSN:
0960-8524
Subject:
catalysts; catalytic activity; cations; cellulose; depolymerization; glucose; hydrogen bonding; hydrolysis; microwave radiation; solvents; tetramethylammonium compounds
Abstract:
... Quaternary ammonium perrhenates were applied as catalyst to promote the hydrolysis of cellulose in 1-allyl-3-methylimidazolium chloride ([Amim]Cl). The quaternary ammonium perrhenates displayed good catalytic performance for cellulose hydrolysis. Water was also proven to be effective to promote cellulose hydrolysis. Accordingly, 97% of total reduced sugar (TRS) and 42% of glucose yields could be o ...
DOI:
10.1016/j.biortech.2015.07.110

32. Purification and characterisation of an acidic and antifungal chitinase produced by a Streptomyces sp.

Author:
Narayanan Karthik; Parameswaran Binod; Ashok Pandey
Source:
Bioresource technology 2015 v.188 pp. 195-201
ISSN:
0960-8524
Subject:
Streptomyces; ammonium sulfate; antifungal properties; biological control; cations; chitin; chitinase; enzyme activity; ion exchange chromatography; molecular weight; pH; plant pathogens; polyacrylamide gel electrophoresis; salinity; temperature
Abstract:
... An extremely acidic extracellular chitinase produced by a Streptomyces sp. was purified 12.44-fold by ammonium sulphate precipitation, ion-exchange chromatography and gel-permeation chromatography and further characterised. The molecular mass of the enzyme was estimated to be about 40kDa by SDS–PAGE. The optimum pH and temperature of the purified enzyme were pH 2 and 6, and 50°C respectively. The ...
DOI:
10.1016/j.biortech.2015.03.006

33. Separators used in microbial electrochemical technologies: Current status and future prospects

Author:
Siti Mariam Daud; Byung Hong Kim; Mostafa Ghasemi; Wan Ramli Wan Daud
Source:
Bioresource technology 2015 v.195 pp. 170-179
ISSN:
0960-8524
Subject:
biofouling; cations; ceramics; electrochemistry; glass fibers; ion exchange; nylon; oxygen; pollution; protons; separators; wastes
Abstract:
... Microbial electrochemical technologies (METs) are emerging green processes producing useful products from renewable sources without causing environmental pollution and treating wastes. The separator, an important part of METs that greatly affects the latter’s performance, is commonly made of Nafion proton exchange membrane (PEM). However, many problems have been identified associated with the Nafi ...
DOI:
10.1016/j.biortech.2015.06.105

34. Submersible microbial desalination cell for simultaneous ammonia recovery and electricity production from anaerobic reactors containing high levels of ammonia

Author:
Yifeng Zhang; Irini Angelidaki
Source:
Bioresource technology 2015 v.177 pp. 233-239
ISSN:
0960-8524
Subject:
ammonia; ammonium compounds; anaerobic digestion; cations; desalination; electricity; electrodes
Abstract:
... High ammonia concentration in anaerobic reactors can seriously inhibit the anaerobic digestion process. In this study, a submersible microbial desalination cell (SMDC) was developed as an innovative method to lower the ammonia level in a continuous stirred tank reactor (CSTR) by in situ ammonia recovery and electricity production. In batch experiment, the ammonia concentration in the CSTR decrease ...
DOI:
10.1016/j.biortech.2014.11.079

35. Synthesis of macroporous silica biomass nanocomposite based on XG/MgSiO3 for the removal of toxic ions

Author:
Wei Ma; Fanqing Meng; Zihong Cheng; Gang Xin; Shibo Duan
Source:
Bioresource technology 2015 v.186 pp. 356-359
ISSN:
0960-8524
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; arsenic; biomass; cadmium; cation exchange capacity; cations; chromium; mercury; nanocomposites; polymers; porous media; scanning electron microscopy; silica; toxicity; transmission electron microscopy; xanthan gum
Abstract:
... Biomass is known as a low-cost adsorbents and there is a need for the development of synthesis method further increase its efficient applications. In this work, a macroporous nanocomposite biomass was synthesized by natural polymer (Xanthan gum) and silicate. The resulting nanocomposite was characterized with XRD, SEM, TEM, BET and FTIR. The analysis confirmed that the functions silicate groups we ...
DOI:
10.1016/j.biortech.2015.03.133

36. Biochar from Alternanthera philoxeroides could remove Pb(II) efficiently

Author:
Yu Yang; Zhongbo Wei; Xiaolong Zhang; Xu Chen; Dongmei Yue; Qian Yin; Lin Xiao; Liuyan Yang
Source:
Bioresource technology 2014 v.171 pp. 227-232
ISSN:
0960-8524
Subject:
Alternanthera philoxeroides; adsorbents; adsorption; aquatic plants; biochar; carbon; carbonates; cations; ecological restoration; eutrophication; heavy metals; lakes; lead; pH; water pollution; water treatment
Abstract:
... A novel bio-adsorbent was successfully synthesized by pyrolyzing Alternanthera philoxeroides (AP), one of the most widely used hydrophytes for eutrophic lake ecological restoration under O2-limited condition at 600°C. Compared with commercially active carbon (AC), the initial solution pH had a weak effect on the adsorption of Pb(II) by AP biochar (APB). The maximum adsorption capacity of APB for P ...
DOI:
10.1016/j.biortech.2014.08.015

37. Change of pH during excess sludge fermentation under alkaline, acidic and neutral conditions

Author:
Yue Yuan; Yongzhen Peng; Ye Liu; Baodan Jin; Bo Wang; Shuying Wang
Source:
Bioresource technology 2014 v.174 pp. 1-5
ISSN:
0960-8524
Subject:
ammonium nitrogen; cations; fermentation; pH; short chain fatty acids; sludge
Abstract:
... The change in pH during excess sludge (ES) fermentation of varying sludge concentrations was investigated in a series of reactors at alkaline, acidic, and neutral pHs. The results showed that the changes were significantly affected by fermentative conditions. Under different conditions, pH exhibited changing profiles. When ES was fermented under alkaline conditions, pH decreased in a range of (10± ...
DOI:
10.1016/j.biortech.2014.07.104

38. Flocculation and dewaterability of chemically enhanced primary treatment sludge by bioaugmentation with filamentous fungi

Author:
Kumarasamy Murugesan; Ammaiyappan Selvam; Jonathan W.C. Wong
Source:
Bioresource technology 2014 v.168 pp. 198-203
ISSN:
0960-8524
Subject:
Penicillium; bacteria; bioaugmentation; calcium; cations; chemical oxygen demand; flocculation; fungi; iron; magnesium; microbial biomass; mycelium; pH; pellets; sewage sludge
Abstract:
... In this study, filamentous fungal strains isolated from sewage sludge bioleached with iron-oxidizing bacteria were evaluated their effectiveness in improving the flocculation and dewaterability of chemically enhanced primary treatment (CEPT) sludge. Augmentation of the pre-grown mycelial biomass in the CEPT sludge had no significant changes in sludge pH but, improved sludge dewaterability, as evid ...
DOI:
10.1016/j.biortech.2014.04.063

39. Impact of sludge cation distribution pattern on its filterability in membrane bioreactor

Author:
Haifeng Zhang; Zhongping Wang; Lanhe Zhang; Lianfa Song
Source:
Bioresource technology 2014 v.171 pp. 16-21
ISSN:
0960-8524
Subject:
activated sludge; bioreactors; calcium; cations; filterability; fouling; iron; polysaccharides; proteins; sodium
Abstract:
... The distributions of cations of various valences (Na+, Ca2+ and Fe3+) in the outer layers of extracellular polymeric substances (EPSs) to pellet have a significant impact on the stratification structure of polysaccharides (PS) or proteins (PN) in activated sludge. Comparison with the control showed that the monovalent Na+ reduced flocculability slightly (about 9.75%), whereas Ca2+ and Fe3+ increas ...
DOI:
10.1016/j.biortech.2014.07.084

40. Improving the amenability of municipal waste activated sludge for biological pretreatment by phase-separated sludge disintegration method

Author:
S. Kavitha; S. Adish Kumar; S. Kaliappan; Ick Tae Yeom; J. Rajesh Banu
Source:
Bioresource technology 2014 v.169 pp. 700-706
ISSN:
0960-8524
Subject:
activated sludge; binding agents; biodegradability; biogas; cations; chemical oxygen demand; chemical reduction; citric acid; solubilization
Abstract:
... The significance of citric acid, a cation binding agent, was investigated for the exclusion of extracellular polymeric substance (EPS) from waste activated sludge (WAS) and anaerobic biodegradability following enzymatic bacterial pretreatment. EPS was removed with 0.05g/g SS of citric acid. The results of pretreatment found that the suspended solids reduction and chemical oxygen demand solubilisat ...
DOI:
10.1016/j.biortech.2014.07.065

41. Induction of a laccase Lcc9 from Coprinopsis cinerea by fungal coculture and its application on indigo dye decolorization

Author:
Kai Pan; Nannan Zhao; Qiang Yin; Tianwei Zhang; Xiaolan Xu; Wei Fang; Yuzhi Hong; Zemin Fang; Yazhong Xiao
Source:
Bioresource technology 2014 v.162 pp. 45-52
ISSN:
0960-8524
Subject:
Coprinopsis cinerea; cations; coculture; decolorization; fungi; genes; indigo; laccase; pH; solvents; temperature
Abstract:
... A fungal coculture system comprised of Coprinopsis cinerea Okayama 7 (#130) and Gongronella sp. w5 produced 900 times higher laccase activity than that in pure culture. A fungal laccase named Lcc9 was induced from C. cinerea for the first time by coculture. Lcc9 was purified, characterized, and found to have high activity toward phenolic substrates at the optimum pH of 6.5 and temperature of 60°C. ...
DOI:
10.1016/j.biortech.2014.03.116

42. Lignin dissolution in dialkylimidazolium-based ionic liquid–water mixtures

Author:
Yantao Wang; Ligang Wei; Kunlan Li; Yingchong Ma; Ningning Ma; Shan Ding; Linlin Wang; Deyang Zhao; Bing Yan; Wenying Wan; Qian Zhang; Xin Wang; Junmei Wang; Hui Li
Source:
Bioresource technology 2014 v.170 pp. 499-505
ISSN:
0960-8524
Subject:
acetates; anions; bromides; bromine; cations; ionic liquids; lignin; solubility
Abstract:
... Lignin dissolution in dialkylimidazolium-based ionic liquid (IL)–water mixtures (40wt%–100wt% IL content) at 60°C was investigated. The IL content and type are found to considerably affect lignin solubility. For the IL–water mixtures except 1-butyl-3-methylimidazolium tetrafluoroborate ([C4C1im]BF4), the maximum lignin solubility can be achieved at 70wt% IL content. Lignin solubility in IL–water m ...
DOI:
10.1016/j.biortech.2014.08.020

43. Production and characterization of high efficiency bioflocculant isolated from Klebsiella sp. ZZ-3

Author:
Ya-Jie Yin; Zun-Ming Tian; Wei Tang; Lei Li; Li-Yan Song; Shawn P. McElmurry
Source:
Bioresource technology 2014 v.171 pp. 336-342
ISSN:
0960-8524
Subject:
Klebsiella; cations; flocculation; galactose; glucose; industrial applications; kaolin; mannose; microscopy; molecular weight; pH; polysaccharides; rhamnose; ribosomal DNA; thermal stability; zeta potential
Abstract:
... In this study, a new bioflocculant (ZZ-3) is isolated and evaluated. This novel flocculant was derived Klebsiella, which was identified by 16S rDNA sequencing as well as biochemical and physiological analyses. The composition of ZZ-3 was found to be 84.6% polysaccharides and 6.1% protein. More specifically, the amount (moles) of the polysaccharides rhamnose, mannose, and galactose were found to be ...
DOI:
10.1016/j.biortech.2014.08.094

44. Spontaneous modification of graphite anode by anthraquinone-2-sulfonic acid for microbial fuel cells

Author:
Xinhua Tang; Haoran Li; Zhuwei Du; How Yong Ng
Source:
Bioresource technology 2014 v.164 pp. 184-188
ISSN:
0960-8524
Subject:
NAD (coenzyme); bacteria; cations; electrochemistry; electrodes; electron transfer; electrons; energy; energy-dispersive X-ray analysis; graphene; hydrogen; microbial fuel cells; spectroscopy
Abstract:
... In this study, anthraquinone-2-sulfonic acid (AQS), an electron transfer mediator, was immobilized onto graphite felt surface via spontaneous reduction of the in situ generated AQS diazonium cations. Cyclic voltammetry (CV) and energy dispersive spectrometry (EDS) characterizations of AQS modified graphite demonstrated that AQS was covalently grafted onto the graphite surface. The modified graphit ...
DOI:
10.1016/j.biortech.2014.05.010

45. An electroanalytical approach for evaluation of biochar adsorption characteristics and its application for Lead and Cadmium determination

Author:
Talita Mayumi Suguihiro; Paulo Roberto de Oliveira; Edivaltrys Inayve Pissinati de Rezende; Antonio Sálvio Mangrich; Luiz Humberto Marcolino Junior; Márcio F. Bergamini
Source:
Bioresource technology 2013 v.143 pp. 40-45
ISSN:
0960-8524
Subject:
adsorption; biochar; cadmium; carbon; castor oil; cations; detection limit; electrodes; industrial effluents; laws and regulations; oilseed cakes; pastes; temperature
Abstract:
... This work describes for first time the use of electroanalytical techniques for evaluation of adsorptive proprieties of biochar using it as electrode modifier and its application for preconcentration and determination of Lead(II) and Cadmium(II) under differential pulse adsorptive voltammetric conditions (DPAdSV). Samples of biochars were obtained from castor oil cake using a predefined set of expe ...
DOI:
10.1016/j.biortech.2013.05.107

46. Characterization of a bioflocculant MBF-5 by Klebsiella pneumoniae and its application in Acanthamoeba cysts removal

Author:
Haijuan Zhao; Hongtao Liu; Jiangang Zhou
Source:
Bioresource technology 2013 v.137 pp. 226-232
ISSN:
0960-8524
Subject:
Acanthamoeba; Amoeba; Klebsiella pneumoniae; air; biopolymers; cations; flocculants; flocculation; kaolin; pH; pathogens; proteins; response surface methodology; soil
Abstract:
... This study evaluated the potential of an extracellular, novel biopolymeric flocculant produced by a strain of Klebsiella pneumoniae isolated from a sputum sample for removal of Acanthamoeba cysts, a potent pathogen prevalent in water, soil, air, and dust. The presence of cations did not enhance flocculating activity. The component of MBF-5 was mainly polysaccharide and protein with proportional of ...
DOI:
10.1016/j.biortech.2013.03.079
PubMed:
23587824

47. Characterization of detergent compatible protease of a halophilic Bacillus sp. EMB9: Differential role of metal ions in stability and activity

Author:
Rajeshwari Sinha; S.K. Khare
Source:
Bioresource technology 2013 v.145 pp. 357-361
ISSN:
0960-8524
Subject:
ammonium sulfate; cations; cellulose; chromatography; metal ions; molecular weight; pH; seawater; serine proteinases; sodium chloride; solvents; stain removal; temperature
Abstract:
... A moderately halophilic protease producer, Bacillus sp. strain isolated from sea water is described. The protease is purified to homogeneity by ammonium sulphate precipitation and CM cellulose chromatography. The serine protease has a molecular mass of 29kDa. Enzymatic characterization of protease revealed Km 2.22mgmL−1, Vmax 1111.11UmL−1, pH optimum 9.0, t1/2 190min at 60°C and salt optima 1% (w/ ...
DOI:
10.1016/j.biortech.2012.11.024

48. Competitive migration behaviors of multiple ions and their impacts on ion-exchange resin packed microbial desalination cell

Author:
Kuichang Zuo; Lulu Yuan; Jincheng Wei; Peng Liang; Xia Huang
Source:
Bioresource technology 2013 v.146 pp. 637-642
ISSN:
0960-8524
Subject:
anions; cations; desalination; electrical conductivity; electrodes; hardness; ion exchange; resins; salts
Abstract:
... Mixed ion-exchange resins packed microbial desalination cell (R-MDC) could stabilize the internal resistance, however, the impacts of multiple ions on R-MDC performance was unclear. This study investigated the desalination performance, multiple ions migration behaviors and their impacts on R-MDCs fed with salt solution containing multiple anions and cations. Results showed that R-MDC removed multi ...
DOI:
10.1016/j.biortech.2013.07.139
PubMed:
23982060

49. Development of a treatment system for molasses wastewater: The effects of cation inhibition on the anaerobic degradation process

Author:
Takashi Onodera; Shinya Sase; Pairaya Choeisai; Wilasinee Yoochatchaval; Haruhiko Sumino; Takashi Yamaguchi; Yoshitaka Ebie; Kaiqin Xu; Noriko Tomioka; Motoyuki Mizuochi; Kazuaki Syutsubo
Source:
Bioresource technology 2013 v.131 pp. 295-302
ISSN:
0960-8524
Subject:
acidification; cations; chemical oxygen demand; effluents; filters; methane; methane production; molasses; nitrification; sludge; sucrose; sulfates; sulfur; upflow anaerobic sludge blanket reactor; wastewater
Abstract:
... This study evaluated the process performance of a novel treatment system consisting of an acidification reactor, an upflow staged sludge bed (USSB) reactor, an upflow anaerobic sludge blanket reactor, and an aerobic trickling filter for the treatment of a high-strength molasses wastewater with a chemical oxygen demand (COD) of up to 120,000mg/L. The USSB operating at 35°C was capable of achieving ...
DOI:
10.1016/j.biortech.2012.12.126
PubMed:
23360705

50. Liquefaction of sawdust in 1-octanol using acidic ionic liquids as catalyst

Author:
Zexiang Lu; Huaiyu Zheng; Liwei Fan; Yiqiang Liao; Bingjing Ding; Biao Huang
Source:
Bioresource technology 2013 v.142 pp. 579-584
ISSN:
0960-8524
Subject:
Cunninghamia lanceolata; acidity; catalysts; cations; cellulose; esters; ethers; green chemistry; hemicellulose; lignin; octane; oils; sawdust; solvents
Abstract:
... Acidic ionic liquids (AILs) as a novel catalyst in biomass liquefaction can accord with the demand of green chemistry and enhance the development of biomass thermal chemical conversion. A series of AILs containing HSO4- were synthesized by the imidazolium cation functionalization and applied to the Chinese fir sawdust liquefaction in 1-octanol in this paper. The experimental results showed that th ...
DOI:
10.1016/j.biortech.2013.05.091
PubMed:
23770997