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1. Upscaling of microbially driven first-order reactions in heterogeneous porous media

Author:
Jung, Heewon; Meile, Christof
Source:
Journal of contaminant hydrology 2019 v.224 pp. 103483
ISSN:
0169-7722
Subject:
microbial activity,   etc   ; biomass; microorganisms; porous media; reaction kinetics;     Show all 5 Subjects
Abstract:
... Reactions mediated by microorganisms determine the fate of many chemicals in natural porous media. At the pore scale, the distribution of chemicals and microorganisms is not homogeneous, leading to heterogeneous distribution of microbial activities at the pore scale. We conducted pore scale reactive transport simulations to investigate the scaling of microbially mediated consumption reaction rates ...
DOI:
10.1016/j.jconhyd.2019.04.006

2. Towards the biofilm characterization and regulation in biological wastewater treatment

Author:
Huang, Hui; Peng, Chong; Peng, Pengcheng; Lin, Yuan; Zhang, Xuxiang; Ren, Hongqiang
Source:
Applied microbiology and biotechnology 2019 v.103 no.3 pp. 1115-1129
ISSN:
0175-7598
Subject:
microbial activity,   etc   ; biofilm; microbial physiology; wastewater; wastewater treatment;     Show all 5 Subjects
Abstract:
... There is an increasing need for application of biofilm process in the upcycling of wastewater treatment plants all around the world in recent years, yet there are few literatures on summarizing wastewater biofilm during the life cycle. In particular, there is a vacancy on characterization at various stages of biofilm and its regulation. This review provided a whole look at biofilm formation and it ...
DOI:
10.1007/s00253-018-9511-6

3. Combined effect of pressure and temperature for yogurt production

Author:
Lopes, Rita P.; Mota, Maria J.; Sousa, Sérgio; Gomes, Ana M.; Delgadillo, Ivonne; Saraiva, Jorge A.
Source:
Food research international 2019 v.122 pp. 222-229
ISSN:
0963-9969
Subject:
microbial activity,   etc   ; atmospheric pressure; biochemical pathways; fermentation; lactic acid; temperature; yogurt;     Show all 7 Subjects
Abstract:
... Fermentation under non-conventional conditions has gained prominence in the last years, due to the possible process improvements. Fermentation under sub-lethal pressures is one of such cases, and may bring novel characteristics and features to fermentative processes and products. In this work, the effect of both pressure (10–100 MPa) and temperature (25–50 °C) on yogurt production fermentation kin ...
DOI:
10.1016/j.foodres.2019.04.010

4. Effect of using powdered biochar and surfactant on desorption and biodegradability of phenanthrene sorbed to biochar

Author:
Kang, Seju; Kim, Geunyoung; Choe, Jong Kwon; Choi, Yongju
Source:
Journal of hazardous materials 2019 v.371 pp. 253-260
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; biochar; biodegradability; desorption; feedstocks; micelles; nonionic surfactants; phenanthrenes; rice hulls; sediments; sewage sludge; soil;     Show all 12 Subjects
Abstract:
... The present study aimed to investigate the relationship between the desorption and biodegradability of phenanthrene sorbed to biochars by employing two approaches that may change the desorption and biodegradability: the use of powdered biochars and nonionic surfactants. Biochars derived from two feedstocks (rice husk and sewage sludge; pyrolyzed at 500 °C but showing different aromaticity) were us ...
DOI:
10.1016/j.jhazmat.2019.02.104

5. Glutaraldehyde inhibits biological treatment of organic additives in hydraulic fracturing produced water

Author:
Akyon, Benay; Lipus, Daniel; Bibby, Kyle
Source:
The Science of the total environment 2019 v.666 pp. 1161-1168
ISSN:
0048-9697
Subject:
microbial activity,   etc   ; additives; biocides; biodegradation; biofilm; biological treatment; community structure; glutaraldehyde; hydraulic fracturing; microbial communities; oils;     Show all 11 Subjects
Abstract:
... Water generated by hydraulic fracturing for the production of oil and gas, commonly termed ‘produced water’, may contain residual organic compounds from the fracturing process or the subsurface formation. Biological treatment is a potential technology to remove residual organic compounds in produced water. Biocides are often added to both fracturing fluids and produced water to limit undesirable m ...
DOI:
10.1016/j.scitotenv.2019.02.056

6. The microbiological response of forest soils after application of nicosulfuron, imazamox and cycloxydim

Author:
Vasic, V.; Djuric, S.; Jafari-Hajnal, T.; Orlovic, S.; Vasic, S.; Poljakovic Pajnik, L.; Galović, V.
Source:
International journal of environmental science and technology 2019 v.16 no.5 pp. 2305-2312
ISSN:
1735-1472
Subject:
microbial activity,   etc   ; Actinobacteria; Azotobacter; bacteria; energy; forest soils; forests; fungi; imazamox; nicosulfuron; reproduction;     Show all 11 Subjects
Abstract:
... During application, a significant part of herbicide reaches the soil surface and profile which inevitably affect the activity of microorganisms. Some microorganisms are able to degrade herbicides and use them as a source of biogenic elements and energy to maintain their physiological processes. On the other hand, herbicides may alter the number of microorganisms as well as change their activity an ...
DOI:
10.1007/s13762-018-1862-0

7. Application of a compact trickle-bed bioreactor for the removal of odor and volatile organic compounds emitted from a wastewater treatment plant

Author:
Kasperczyk, Damian; Urbaniec, Krzysztof; Barbusinski, Krzysztof; Rene, Eldon R.; Colmenares-Quintero, Ramon F.
Source:
Journal of environmental management 2019 v.236 pp. 413-419
ISSN:
0301-4797
Subject:
microbial activity,   etc   ; air; bioreactors; hydrogen sulfide; odors; poisoning; pollutants; pollution load; volatile organic compounds; wastewater treatment;     Show all 10 Subjects
Abstract:
... A compact trickle-bed bioreactor (CTBB) was tested for the removal of volatile organic compounds (VOCs) and hydrogen sulphide (H2S) present in the exhaust air of a wastewater treatment plant. At gas-flow rates varying between 2.0 and 30.0 m3/h and for specific pollutant loads up to 20 g/(m3·h), removal efficiencies for H2S and VOC were >95%. The CTBB was designed for a maximum H2S concentration of ...
DOI:
10.1016/j.jenvman.2019.01.106

8. Capturing the oxic transformation of iopromide – A useful tool for an improved characterization of predominant redox conditions and the removal of trace organic compounds in biofiltration systems?

Author:
Müller, Johann; Jewell, Kevin S.; Schulz, Manoj; Hermes, Nina; Ternes, Thomas A.; Drewes, Jörg E.; Hübner, Uwe
Source:
Water research 2019 v.152 pp. 274-284
ISSN:
0043-1354
Subject:
microbial activity,   etc   ; aerobic conditions; biodegradability; biodegradation; biofiltration; dissolved oxygen; monitoring; nitrates; oxygen; tracer techniques; triazoles;     Show all 11 Subjects
Abstract:
... The biological degradation of many trace organic compounds has been reported to be strongly redox dependent. The traditional characterization of redox conditions using the succession of inorganic electron acceptors such as dissolved oxygen and nitrate falls short in accurately describing the critical transition state between oxic and suboxic conditions. Novel monitoring strategies using intrinsic ...
DOI:
10.1016/j.watres.2018.12.055

9. Influences of the thermophilic period on biodegradation and nitrogen loss in stimulated vegetable waste composting

Author:
Chang, Ruixue; Li, Yanming; Li, Ji; Chen, Qing; Zhao, Hengyu; Qi, Zicheng
Source:
Global ecology and conservation 2019 v.18 pp. e00623
ISSN:
2351-9894
Subject:
microbial activity,   etc   ; ammonia; biodegradation; composting; nitrogen; organic matter; pathogens; temperature; vegetable residues;     Show all 9 Subjects
Abstract:
... Development of thermophilic composting with ultrahigh temperature (over 70 °C) would enable the vegetable wastes compost harmless, due to the inactivation of the potential viral pathogens. The present study respectively analyzed the influences of temperature (55 °C, 65 °C, and 75 °C), lasting time of temperature over 70 °C (12 h, 24 h, and 48 h), and duration over certain temperature (10 days over ...
DOI:
10.1016/j.gecco.2019.e00623

10. The effects of litter quality and living plants on the home-field advantage of aquatic macrophyte decomposition in a eutrophic urban lake, China

Author:
Luai, Van Biak; Ding, Shaobo; Wang, Dong
Source:
The Science of the total environment 2019 v.650 pp. 1529-1536
ISSN:
0048-9697
Subject:
microbial activity,   etc   ; Myriophyllum spicatum; Trapa natans; aquatic ecosystems; eutrophication; habitats; hydrochemistry; lakes; macroinvertebrates; macrophytes; China;     Show all 11 Subjects
Abstract:
... The ‘home-field advantage’ (HFA) hypothesis states that litter decomposes faster in its ‘home’ habitat, i.e., in the same habitat as the plant species from which it was derived than it does ‘away’ from its home, i.e., in the habitat of a different plant species. However, studies pertaining to HFA in aquatic ecosystems are relatively few. One area not well-studied is whether the presence of living ...
DOI:
10.1016/j.scitotenv.2018.09.104

11. pH dependent of the waste activated sludge reduction by short-time aerobic digestion (STAD) process

Author:
Zhou, Yun; Zhang, Jiao; Zhang, Zhiqiang; Wang, Pan; Xia, Siqing
Source:
The Science of the total environment 2019 v.649 pp. 1307-1313
ISSN:
0048-9697
Subject:
microbial activity,   etc   ; activated sludge; aerobic digestion; ammonium; biodegradation; biopolymers; microorganisms; pH; phosphates;     Show all 9 Subjects
Abstract:
... The short-time aerobic digestion (STAD) process has been found to be a unique and significant technique for the stabilization of waste activated sludge (WAS), but the influences of the system pH on the STAD process was unclear. This study systematically disclosed the influences of the system pH on the STAD process of WAS. Under neutral or weak alkaline conditions, although the biodegradation rates ...
DOI:
10.1016/j.scitotenv.2018.08.411

12. From spheres to ellipsoids: Speeding up considerably the morphological modeling of pore space and water retention in soils

Author:
Kemgue, Alain Trésor; Monga, Olivier; Moto, Serge; Pot, Valérie; Garnier, Patricia; Baveye, Philippe C.; Bouras, Abdelaziz
Source:
Computers & geosciences 2019 v.123 pp. 20-37
ISSN:
0098-3004
Subject:
microbial activity,   etc   ; computers; liquid-air interface; models; prediction; soil pore system; tomography;     Show all 7 Subjects
Abstract:
... In recent years, technological advances have stimulated researchers to try to unravel the extremely complex microscale processes that control the activity of microorganisms in soils. In particular, significant work has been carried out on the development of models able to accurately predict the microscale distribution of water, and the location of air–water interfaces in pores. A comparison, by Po ...
DOI:
10.1016/j.cageo.2018.11.006

13. Reductive dissolution and sequestration of arsenic by microbial iron and thiosulfate reduction

Author:
Ko, Myoung-Soo; Lee, Seunghak; Kim, Kyoung-Woong
Source:
Environmental geochemistry and health 2019 v.41 no.1 pp. 461-467
ISSN:
0269-4042
Subject:
microbial activity,   etc   ; anaerobic conditions; arsenic; iron; iron oxides; polluted soils; remediation; sediments; sulfates; thiosulfates;     Show all 10 Subjects
Abstract:
... Iron oxide and oxy-hydroxide are commonly used for remediation and rehabilitation of arsenic (As)-contaminated soil and water. However, the stability of As sequestered by iron oxide and oxy-hydroxide under anaerobic conditions is still uncertain. Geochemical properties influence the behavior of As; in addition, microbial activities affect the mobility of sequestered As in soil and water. Microbial ...
DOI:
10.1007/s10653-018-0086-z

14. Insight into the potentiality of big biochar particle as an amendment in aerobic composting of sewage sludge

Author:
Du, Jingjing; Zhang, Yuyan; Hu, Bin; Qv, Mingxiang; Ma, Chuang; Wei, Mingbao; Zhang, Hongzhong
Source:
Bioresource technology 2019 v.288 pp. 121469
ISSN:
0960-8524
Subject:
microbial activity,   etc   ; Litchi; beta-glucosidase; biochar; bioreactors; carbon; composting; enzyme activity; fermentation; nitrogen; physicochemical properties; sewage sludge; sulfur; temperature; wood;     Show all 15 Subjects
Abstract:
... To assess the potential of big biochar as composting amendment, the study was performed on aerobic composting of sewage sludge amended with litchi wood biochar (10% of fresh mixture weight, 20–40 mm) in a 400 L bioreactor system. Physicochemical properties and microbial activities were monitored during the first fermentation process of aerobic compost. Application of big biochar reduced peak tempe ...
DOI:
10.1016/j.biortech.2019.121469

15. Microbial catabolism of Porphyra haitanensis polysaccharides by human gut microbiota

Author:
Xu, Shu-Ying; Aweya, Jude Juventus; Li, Na; Deng, Rui-Yan; Chen, Wei-Yi; Tang, Jie; Cheong, Kit-Leong
Source:
Food chemistry 2019 v.289 pp. 177-186
ISSN:
0308-8146
Subject:
microbial activity,   etc   ; Porphyra; butyric acid; fermentation; humans; intestinal microorganisms; intestines; microbiome; models; molecular weight; oligosaccharides; pathogens; polymerization; polysaccharides; probiotics;     Show all 15 Subjects
Abstract:
... This study applied an in vitro fermentation model, whereby the catabolism of Porphyra haitanensis polysaccharides (PHP) was monitored coupled with the variations of microbiota composition and the concentration of short-chain fatty acids (SCFAs), so as to assess the effects of PHP on human intestinal microbiota. After 24 h anaerobic incubation, the level of microflora diversity increased significan ...
DOI:
10.1016/j.foodchem.2019.03.050

16. Rainfall frequency, not quantity, controls isopod effect on litter decomposition

Author:
Joly, François-Xavier; Weibel, Abigail K.; Coulis, Mathieu; Throop, Heather L.
Source:
Soil biology & biochemistry 2019 v.135 pp. 154-162
ISSN:
0038-0717
Subject:
microbial activity,   etc   ; Armadillidium vulgare; biogeochemistry; climate; climate change; detritivores; food webs; greenhouse gas emissions; models; plant litter; rain; soil water;     Show all 12 Subjects
Abstract:
... Increasing climate variability is one of the dominant components of climate change, resulting particularly in altered rainfall patterns. Yet, the consequences of rainfall variability on biogeochemical processes that contribute to greenhouse gas emissions has received far less attention than have changes in long-term mean rainfall. In particular, it remains unclear how leaf litter decomposition res ...
DOI:
10.1016/j.soilbio.2019.05.003

17. Promoting waste activated sludge reduction by linear alkylbenzene sulfonates: Surfactant dose control extracellular polymeric substances solubilization and microbial community succession

Author:
Zhou, Yun; Zhang, Zhiqiang; Zhang, Lei; Xu, Shengnan; Guo, Bing; Liu, Yang; Xia, Siqing
Source:
Journal of hazardous materials 2019 v.374 pp. 74-82
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; activated sludge; aerobic digestion; bacteria; biodegradation; dyes; flow cytometry; heterotrophs; microbial communities; oxygen; polymers; solubilization; sulfonates; surfactants;     Show all 14 Subjects
Abstract:
... Short-time aerobic digestion (STAD) was proved to promote the reduction of waste activated sludge (WAS). This study systematically disclosed the influential characteristics and mechanisms of linear alkylbenzene sulfonates (LAS) dosage on the reduction of WAS in STAD system. Flow cytometer (FC) combined with SYTOX Green (SG) dye was used to differentiate extracellular polymeric substances (EPS) rel ...
DOI:
10.1016/j.jhazmat.2019.04.024

18. Effect of inoculum types and microbial community on thermophilic and mesophilic solid-state anaerobic digestion of empty fruit bunches for biogas production

Author:
Suksong, Wantanasak; Mamimin, Chonticha; Prasertsan, Poonsuk; Kongjan, Prawit; O-Thong, Sompong
Source:
Industrial crops and products 2019 v.133 pp. 193-202
ISSN:
0926-6690
Subject:
microbial activity,   etc   ; Clostridium; Methanoculleus; Methanosaeta; anaerobic digestion; cellulose; fruits; gas production (biological); inoculum; methane; methane production; microbial communities; recycling; sludge;     Show all 14 Subjects
Abstract:
... Methane production from solid-state anaerobic digestion (SS-AD) of empty fruit bunches (EFB) using recycling solid-anaerobic digested (S-AD) sludge and liquid-anaerobic digested (L-AD) sludge as inoculum was investigated under thermophilic (55 °C) and mesophilic conditions (40 °C). The methane production rate of L-AD sludge (2.98–3.27 L-CH4 L−1 reactor d −1) was 1–2 times higher than recycling S-A ...
DOI:
10.1016/j.indcrop.2019.03.005

19. Effects of contrasting precipitation patterns on the trajectory of actively growing and inactive microbial communities after rewetting

Author:
Engelhardt, Ilonka C.; Blazewicz, Steven J.; Barnard, Romain L.
Source:
Soil biology & biochemistry 2019 v.134 pp. 172-174
ISSN:
0038-0717
Subject:
microbial activity,   etc   ; bacteria; bacterial communities; fungal communities; grassland soils; isotope labeling; phylogeny; stable isotopes; summer; terrestrial ecosystems;     Show all 10 Subjects
Abstract:
... Predicted shifts in precipitation patterns could impact soil microbial activity, and thereby terrestrial ecosystem functioning. In a Mediterranean grassland soil which had been subjected to contrasting precipitation patterns, we investigated the response of active and inactive bacterial and fungal communities to rewetting over time, using 18O stable isotope probing. Altered precipitation patterns ...
DOI:
10.1016/j.soilbio.2019.03.029

20. Microbial activity and biodiversity responding to contamination of metal(loid) in heterogeneous nonferrous mining and smelting areas

Author:
Liu, Jian-li; Yao, Jun; Lu, Chao; Li, Hao; Li, Zi-fu; Duran, Robert; Sunahara, Geoffrey; Mihucz, Victor G.
Source:
Chemosphere 2019 v.226 pp. 659-667
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; Acidithiobacillus; Thiobacillus; acidification; bacterial communities; biochemical pathways; biodiversity; calorimetry; metal tolerance; mine tailings; mining; smelting; sulfur; toxicity;     Show all 14 Subjects
Abstract:
... The combined contamination of nonferrous metal(loid) mining and smelting areas is a global issue, in need of urgent management. To our knowledge, this is the first report of microbial activities by microcalorimetry in specific nonferrous metal(loid) tailings with oligonutrition and high contents of toxic metal(loid)s. Dynamics of bacterial diversity were also characterized. Here we show that taili ...
DOI:
10.1016/j.chemosphere.2019.03.051