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1. Patterns of partnership: surveillance and mimicry in host-microbiota mutualisms

Author:
Wiles, Travis J; Guillemin, Karen
Source:
Current opinion in microbiology 2020 v.54 pp. 87-94
ISSN:
1369-5274
Subject:
microbial activity,   etc   ; metabolism; microbial communities; microorganisms; monitoring; mutualism; pathogens;     Show all 7 Subjects
Abstract:
... The repertoire of microbial cues monitored by animal and plant tissues encompasses not just molecules but also microbial activities. These include typical pathogen strategies of injuring membranes, degrading cellular material, and scavenging resources. These activities, however, are not exclusive to pathogens. Instead, they characterize the competitive strategies of microbes living in multispecies ...
DOI:
10.1016/j.mib.2020.01.012

2. Distinguishing reclamation, revegetation and phytoremediation, and the importance of geochemical processes in the reclamation of sulfidic mine tailings: A review

Author:
Xie, Lina; van Zyl, Dirk
Source:
Chemosphere 2020 v.252 pp. 126446
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; geochemistry; land restoration; metalloids; mine tailings; oxidation; phytoremediation; sulfide minerals;     Show all 8 Subjects
Abstract:
... The reclamation of tailings, especially acid-generating tailings resulting from the oxidation of sulfide minerals, has been an urgent but difficult task for a long period. Phytoremediation has been received great concerns in the area of metal (loid)s removal in recent two decades. However, in the reclamation of tailings, the term “revegetation” has been mentioned frequently. In order to help to de ...
DOI:
10.1016/j.chemosphere.2020.126446

3. New approach for the assessment of the contribution of adsorption, biodegradation and self-bioregeneration in the dynamic process of biologically active carbon functioning

Author:
Smolin, Serhii; Kozyatnyk, Ivan; Klymenko, Nataliya
Source:
Chemosphere 2020 v.248 pp. 126022
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; activated carbon; adsorption; biobased products; biodegradation; filtration; models; nitrophenols; organic matter; porosity; sorbents;     Show all 11 Subjects
Abstract:
... This work developed an effective model of the cooperative removal process of organic compounds on biologically active carbon. This model involves the determination of the dynamics of adsorption efficiency and degradation of specific classes of target organic substances but also the dynamics of non-target filling of pores with products of vital microbial activity. It is possible to quantitatively a ...
DOI:
10.1016/j.chemosphere.2020.126022

4. Perspective on enhancing the anaerobic digestion of waste activated sludge

Author:
Xu, Ying; Lu, Yiqing; Zheng, Linke; Wang, Zhiwei; Dai, Xiaohu
Source:
Journal of hazardous materials 2020 v.389 pp. 121847
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; activated sludge; anaerobic digestion; biodegradability; bioenergy; microorganisms; microstructure; organic matter;     Show all 8 Subjects
Abstract:
... Anaerobic digestion (AD) of waste activated sludge (WAS) is an important bio-energy strategy that has been hindered by low conversion efficiency. This paper presents a comprehensive review of research on the sludge’s property and enhancing AD of WAS, and proposes two perspectives of material structure and microbial activity on improving AD efficiency. In the first part of this review, the key prin ...
DOI:
10.1016/j.jhazmat.2019.121847

5. Performance enhancement of H2S-based autotrophic denitrification with bio-gaseous CO2 as sole carbon source through new pH adjustment materials

Author:
Liu, Yongjie; Chen, Nan; Tong, Shuang; Liang, Jing; Yang, Chen; Feng, Chuanping
Source:
Journal of environmental management 2020 v.261 pp. 110157
ISSN:
0301-4797
Subject:
microbial activity,   etc   ; adenosine triphosphate; biogas; carbon; carbon dioxide; denitrification; desulfurization; hydrogen sulfide; nitrates; pH; phosphates; wastewater;     Show all 12 Subjects
Abstract:
... H₂S-based denitrification could achieve synchronous removal of nitrate and H₂S and had been regarded as an efficient way for biogas desulfurization and wastewater denitrification. Using CO₂ in biogas as carbon source had a potential of saving cost further, but the performance deteriorated due to the drop in pH. Two kinds of nature ore, medical stone and phosphate ore, were added as new pH adjustme ...
DOI:
10.1016/j.jenvman.2020.110157

6. Sodium azide inhibition of microbial activities and impact on sludge floc destabilization

Author:
Suresh, Akshaykumar; Pan, Chaozhi; Ng, Wun Jern
Source:
Chemosphere 2020 v.244 pp. 125452
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; aerobes; ammonium; bacterial communities; dissolved oxygen; flocculation; fluorescence; microorganisms; potassium; proteins; sludge; sodium azide;     Show all 12 Subjects
Abstract:
... Absence of sludge deflocculation under prolonged (24 h or longer) conditions with dissolved oxygen (DO) less than 0.5 mg L⁻¹ was recently reported. The reduced aerobic microbial activity, was speculated, had been compensated by the activity of other bacterial (i.e. facultative) communities. To assess such a compensation mechanism and to better evaluate impact of overall microbial activity on the f ...
DOI:
10.1016/j.chemosphere.2019.125452

7. Have decades of abiotic studies in sediments been misinterpreted?

Author:
Layglon, Nicolas; Misson, Benjamin; Mounier, Stéphane; Lenoble, Véronique; Omanović, Dario; Garnier, Cédric
Source:
The Science of the total environment 2020 v.707 pp. 135949
ISSN:
0048-9697
Subject:
microbial activity,   etc   ; carbon; organic matter; pH; seawater; sediments; sodium azide; sterilizers; trace elements;     Show all 9 Subjects
Abstract:
... Sterilization techniques are largely employed to distinguish biotic and abiotic processes in biogeochemical studies as they inhibit microbial activity. Since one century, chemical sterilizers, supposed to preserve original environmental samples, have taken precedence over physical sterilization techniques considered too destructive. Sodium azide (NaN₃) is nowadays the most commonly used inorganic ...
DOI:
10.1016/j.scitotenv.2019.135949

8. Formaldehyde in Rainwater in Sakai City, Japan: Continuous Observation, Concentration, and Aqueous Photoproduction

Author:
Nguyen, Chinh Nhu Bao; Thi, Hien To; Fujii, Yusuke; Takenaka, Norimichi
Source:
Water, air, and soil pollution 2020 v.231 no.2 pp. 69
ISSN:
0049-6979
Subject:
microbial activity,   etc   ; air; chemiluminescence; diurnal variation; formaldehyde; photoirradiation; rain; troposphere; wet season; Japan;     Show all 10 Subjects
Abstract:
... Formaldehyde (HCHO) is an important component in tropospheric chemistry, but the study of HCHO in rainwater is limited. This is the first report of continuous measurement of HCHO in rainwater. HCHO in rainwater was continuously measured using a modified chemiluminescence method at Sakai City, Osaka, Japan. The continuous measurement was conducted in the 2018 rainy season (Baiu) of Japan. A total o ...
DOI:
10.1007/s11270-020-4444-y

9. Molecular techniques reveal more secrets of fermented foods

Author:
El Sheikha, Aly Farag; Hu, Dian-Ming
Source:
Critical reviews in food science and nutrition 2020 v.60 no.1 pp. 11-32
ISSN:
1549-7852
Subject:
microbial activity,   etc   ; enzymes; fermentation; fermented foods; food biotechnology; microorganisms; processed foods;     Show all 7 Subjects
Abstract:
... Fermented foods were likely to have been the first among all types of processed foods consumed by human beings. The role that fermented food plays is not only related to the development of civilizations and cultural relationships between countries but also related to the nutritional importance of its population. Of course, the early manufacturers of fermented foods didn’t take into account the adv ...
DOI:
10.1080/10408398.2018.1506906

10. A review, analysis and extension of water activity data of sugars and model honey solutions

Author:
Subbiah, Balaji; Blank, Ursula K.M.; Morison, Ken R.
Source:
Food chemistry 2020 v.326 pp. 126981
ISSN:
0308-8146
Subject:
microbial activity,   etc   ; crystallization; data quality; electrolytes; food industry; fructose; glucose; glycerol; honey; maltose; models; shelf life; sucrose; water activity;     Show all 14 Subjects
Abstract:
... Water activity is a physical property measured in the food industry which helps predict shelf life and microbial activity. Honey normally has a water activity less than 0.6, but this can vary with the amount of crystallization in solution. The aim of this work was to obtain relationships, as fundamental as possible, that can be used to predict the water activity of solutions with compositions simi ...
DOI:
10.1016/j.foodchem.2020.126981

11. Community level physiological profiling of microbial electrochemical-based constructed wetlands

Author:
Ramírez-Vargas, Carlos A.; Arias, Carlos A.; Zhang, Liang; Paredes, Diego; Brix, Hans
Source:
The Science of the total environment 2020 v.721 pp. 137761
ISSN:
0048-9697
Subject:
microbial activity,   etc   ; biochemical pathways; biofilm; carbon; color; constructed wetlands; electrochemistry; microbial communities; pollutants; pollution control; sand; uncertainty; water quality;     Show all 13 Subjects
Abstract:
... The performance of constructed wetlands (CW) can be enhanced through the use of microbial electrochemical technologies like METland systems. Given its novelty, uncertainties exist regarding processes responsible for the pollutant removal and microbial activity within the systems. Genetic characterization of microbial communities of METlands is desirable, but it is a time and resource consuming. An ...
DOI:
10.1016/j.scitotenv.2020.137761

12. Application of alkyl polyglycosides for enhanced bioremediation of petroleum hydrocarbon-contaminated soil using Sphingomonas changbaiensis and Pseudomonas stutzeri

Author:
Li, Qian; Huang, Yanning; Wen, Dongdong; Fu, Rongbing; Feng, Leiyu
Source:
The Science of the total environment 2020 v.719 pp. 137456
ISSN:
0048-9697
Subject:
microbial activity,   etc   ; Pseudomonas stutzeri; Sphingomonas; bioaugmentation; biodegradation; biosurfactants; cost effectiveness; half life; hydrocarbons; petroleum; polluted soils; soil sampling; solubility; sorption;     Show all 14 Subjects
Abstract:
... Bioremediation is considered a cost-effective and environmentally sound method for degradation of petroleum hydrocarbons in contaminated soils. This study investigated the effects of biosurfactant alkyl polyglycosides (APG) on enhanced biodegradation of petroleum hydrocarbon-contaminated soils using Sphingomonas changbaiensis and Pseudomonas stutzeri and explored the mechanism responsible for the ...
DOI:
10.1016/j.scitotenv.2020.137456

13. Monitoring photosynthetic microorganism activity with an electrolyte-gated organic field effect transistor

Author:
Le Gall, Jérémy; Mouillard, Flavien; Le, Trung Ngoc; Vu, Thi Thu; Mattana, Giorgio; Brayner, Roberta; Zrig, Samia; Noël, Vincent; Piro, B.
Source:
Biosensors & bioelectronics 2020 v.157 pp. 112166
ISSN:
0956-5663
Subject:
microbial activity,   etc   ; Anabaena flos-aquae; aqueous solutions; biosensors; culture media; electrochemistry; electrolytes; films (materials); monitoring; photosynthesis; transistors;     Show all 11 Subjects
Abstract:
... Among organic thin film transistors (OTFTs), Organic Electrochemical Transistors (OECTs) have been extensively used for cell monitoring while Electrolyte-Gated Organic Field-Effect Transistors (EGOFETs) have never been described for that kind of application. However, EGOFETs are well adapted for this use because, as well as OECTs, they can operate directly in aqueous solutions such as cells cultur ...
DOI:
10.1016/j.bios.2020.112166

14. Chemical and biological immobilization mechanisms of potentially toxic elements in biochar-amended soils

Author:
Bandara, Tharanga; Franks, Ashley; Xu, Jianming; Bolan, Nanthi; Wang, Hailong; Tang, Caixian
Source:
Critical reviews in environmental science and technology 2020 v.50 no.9 pp. 903-978
ISSN:
1547-6537
Subject:
microbial activity,   etc   ; analytical methods; application rate; biochar; clay; microorganisms; organic matter; pH; polluted soils; redox potential; remediation; synergism; toxic substances;     Show all 13 Subjects
Abstract:
... The application of biochars for the remediation of water and soils contaminated with potentially toxic elements (PTEs) has seen a recent growing interest. The mechanisms of chemical immobilization of PTEs with biochars in aqueous media have been well defined. However, immobilization mechanisms by which biochars interact with PTEs in soil matrix are more complex. The biological immobilization mecha ...
DOI:
10.1080/10643389.2019.1642832

15. A novel ex-situ bio-remediation process for perchlorate contaminated soil

Author:
Nair, Rothish R.; Russel, Jasmin G.; Pradeep, S.; Ajay, S.V.; Krishnakumar, B.
Source:
Chemosphere 2020 v.247 pp. 125947
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; Bacillus pumilus; Micrococcus; Serratia marcescens; bioreactors; bioremediation; glucose; perchlorates; polluted soils; soil washing; trace elements; washing;     Show all 12 Subjects
Abstract:
... A novel, ex-situ remediation process for perchlorate contaminated soil is reported in this study. This approach comprises washing the contaminated soil with water, followed by treatment of the wash water in a bioreactor. The treated water reused for the next batch of soil, and the cycle continued. The pilot-scale treatment unit comprising of a soil washing unit (0.75 m3) and a fixed-film bioreacto ...
DOI:
10.1016/j.chemosphere.2020.125947

16. Optimisation of protein-free waste whey supplementation used for the industrial microbiological production of lactic acid

Author:
Lech, Magdalena
Source:
Biochemical engineering journal 2020 v.157 pp. 107531
ISSN:
1369-703X
Subject:
microbial activity,   etc   ; byproducts; cheese industry; eggs; glucose; lactic acid; lactose; microfiltration; peptones; sterilizing; wastes; whey; yeast extract;     Show all 13 Subjects
Abstract:
... A by-product of cheese industry – whey, is often used as a source in a microbiological lactic acid production. However, an activity of microorganisms naturally occurring in whey causing an imbalance in downstream microbiological processes. Thus, the whey permeate was indicated as appropriate medium to LA production, because a microfiltration is a type of sterilization – named very often “cold ster ...
DOI:
10.1016/j.bej.2020.107531

17. Enhanced volatile fatty acids production from waste activated sludge with synchronous phosphorus fixation and pathogens inactivation by calcium hypochlorite stimulation

Author:
Zhang, Qin; Wu, Yang; Luo, Jingyang; Cao, Jiashun; Kang, Chaojie; Wang, Suna; Li, Keyan; Zhao, Jianan; Aleem, Muhammad; Wang, Dongbo
Source:
The Science of the total environment 2020 v.712 pp. 136500
ISSN:
0048-9697
Subject:
microbial activity,   etc   ; activated sludge; bacteria; calcium; calcium hypochlorite; fermentation; hydrolysis; liquids; pathogens; phosphorus; polymers; solubilization; viability; volatile fatty acids;     Show all 14 Subjects
Abstract:
... An efficient approach for synchronous volatile fatty acids (VFAs) promotion, phosphorus fixation and pathogens inactivation during waste activated sludge (WAS) anaerobic fermentation was achieved with optimal calcium hypochlorite (Ca(ClO)₂) stimulation. The maximal VFAs were 3.6 folds of control in reactors with 0.01 g Ca(ClO)₂/g TSS addition. The low dosage of Ca(ClO)₂ enhanced WAS solubilization ...
DOI:
10.1016/j.scitotenv.2020.136500

18. Enhanced chromium(VI) treatment in electroactive constructed wetlands: Influence of conductive material

Author:
Srivastava, Pratiksha; Abbassi, Rouzbeh; Kumar Yadav, Asheesh; Garaniya, Vikram; Kumar, Naresh; Khan, Stuart J.; Lewis, Trevor
Source:
Journal of hazardous materials 2020 v.387 pp. 121722
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; biofilm; chromium; constructed wetlands; energy-dispersive X-ray analysis; graphene; gravel; scanning electron microscopy; wastewater;     Show all 9 Subjects
Abstract:
... A constructed wetland (CW) microcosm based on conductive graphite gravel was investigated for hexavalent chromium (Cr(VI)) treatment from synthetic wastewater. Its performance was evaluated and compared with a traditional gravel-based CW microcosm. The microcosms were operated at varying initial Cr(VI) concentrations (5−20 mg/L) and hydraulic retention times (HRT) (3–7.5 h). Near complete treatmen ...
DOI:
10.1016/j.jhazmat.2019.121722

19. Enhancement of anammox bacterial activity by sodium glutamate

Author:
Xu, Xianglong; Liu, Guo-hua; Zhao, Dongmei; Chen, Jinhui; Shao, Yuting; Wang, Jian; Zhou, Kai; Li, Qinyu; Wei, Qi; Wang, Hongchen
Source:
Chemosphere 2020 v.244 pp. 125570
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; ammonia; anaerobic ammonium oxidation; bacterial biomass; community structure; monosodium glutamate; nitrifying bacteria; polysaccharides; total nitrogen;     Show all 9 Subjects
Abstract:
... In this paper, the enhancement of sodium glutamate (SG) on activity of anaerobic ammonia oxidizing (anammox) bacteria was investigated by batch tests. The results illustrated that SG played an important role in enhancing anammox bacterial activity when the SG dosage ranged from 0.50 to 1.25 mM, and the optimal SG concentration was 1.00 mM. The performance of anammox was the best and the total nitr ...
DOI:
10.1016/j.chemosphere.2019.125570

20. Formation and prevention of pipe scale from acid mine drainage at iron Mountain and Leviathan Mines, California, USA

Author:
Campbell, Kate M.; Alpers, Charles N.; Nordstrom, D. Kirk
Source:
Applied geochemistry 2020 v.115 pp. 104521
ISSN:
0883-2927
Subject:
microbial activity,   etc   ; acid mine drainage; bacteria; chemical analysis; geochemistry; goethite; iron; laboratory experimentation; mixing; models; oxidation; pH; pipelines; remediation; California;     Show all 15 Subjects
Abstract:
... Pipelines carrying acid mine drainage (AMD) to treatment plants commonly form pipe scale, an Fe(III)-rich precipitate that forms inside the pipelines and requires periodic and costly cleanout and maintenance. Pipelines at Iron Mountain Mine (IMM) and Leviathan Mine (LM) in California carry acidic water from mine sources to a treatment plant and have developed pipe scale. Samples of scale and AMD w ...
DOI:
10.1016/j.apgeochem.2020.104521