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You searched for: Subject "anaerobic digesters" Remove constraint Subject: "anaerobic digesters"
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1. Metabolic cascade of complex organic wastes to medium-chain carboxylic acids: A review on the state-of-the-art multi-omics analysis for anaerobic chain elongation pathways

Author:
Hyunjin Kim; Seongcheol Kang; Byoung-In Sang
Source:
Bioresource technology 2022 v.344 pp. 126211
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; carbon; carboxylic acids; coculture; energy; fermentation; metagenomics; microbiome; multiomics;     Show all 9 Subjects
Abstract:
... Medium-chain carboxylic acid (MCCA) production from organic wastes has attracted much attention because of their higher energy contents and diverse applications. Anaerobic reactor microbiomes are stable and resilient and have resulted in efficient performance during many years of operation for thousands of full-scale anaerobic digesters worldwide. The method underlying how the relevant microbial p ...
DOI:
10.1016/j.biortech.2021.126211

2. Characterising sedimentation velocity of primary waste water solids and effluents

Author:
Kareem Abood; Tanmoy Das; Daniel R. Lester; Shane P. Usher; Anthony D. Stickland; Catherine Rees; Nicky Eshtiaghi; Damien J. Batstone
Source:
Water research 2022 v.219 pp. 118555
ISSN:
0043-1354
Subject:
anaerobic digesters,   etc   ; fluid mechanics; models; prediction; research; sludge; uncertainty analysis; wastewater; water;     Show all 9 Subjects
Abstract:
... Sedimentation in waste water is a heavily studied topic, but mainly focused on hindered and compression settling in secondary sludge, a largely monodispersed solids, where bulk sedimentation velocity is effectively described by functions such as double Vesilind (Takacs). However, many waste water solids, including primary sludge and anaerobic digester effluent are polydispersed, for which applicat ...
DOI:
10.1016/j.watres.2022.118555

3. Enhanced degradation performance and microbial community diversity analysis of a microbial electrolytic cell with a double chamber for the treatment of wastewater containing p-bromoaniline

Author:
Qian Wei; Bowen Li; Xia Zhao; Feng Jiang; Yumin Xu; Xiaoning Jia
Source:
Biochemical engineering journal 2022 v.185 pp. 108539
ISSN:
1369-703X
Subject:
anaerobic digesters,   etc   ; Proteobacteria; biocathodes; biofilm; microbial communities; pH; species diversity; wastewater treatment;     Show all 8 Subjects
Abstract:
... The feasibility and superiority of bioelectrochemical systems for the degradation of p-bromoaniline (p-BrA) have been confirmed previously. In this research, the influences of the cathode potential and initial p-BrA concentration on the performance of microbial electrolytic cells (MECs) were investigated. The degradation performance and degradation kinetics of a MEC and a conventional anaerobic re ...
DOI:
10.1016/j.bej.2022.108539

4. Medium-Chain Fatty Acids Recovery from Synthetic Organic Waste Streams Using Supported Liquid Membranes

Author:
Hiroki Fukuda; Jongho Lee
Source:
ACS sustainable chemistry & engineering 2022 v.10 no.26 pp. 8370-8379
ISSN:
2168-0485
Subject:
anaerobic digesters,   etc   ; ethanol; green chemistry; hydrophobicity; liquids; organic wastes; porous media; temperature;     Show all 8 Subjects
Abstract:
... Medium-chain fatty acids (MCFAs) derived from organic waste have been recognized as a high-value biochemical, but their selective separation from the waste remains a challenge. Here, we demonstrate facile and selective MCFA recovery from synthetic organic waste streams using supported liquid membranes (SLMs). SLMs were fabricated by filling a nonpolar solution of trioctylphosphine oxide (TOPO) in ...
DOI:
10.1021/acssuschemeng.2c01161

5. Effect of fish waste augmentation on anaerobic co-digestion of sludge with food waste

Author:
Chayanee Chairattanawat; Arma Yulisa; Seokhwan Hwang
Source:
Bioresource technology 2022 v.361 pp. 127731
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; Methanosaeta; anaerobic digestion; bacterial communities; fish waste; food waste; methanogens; sludge;     Show all 8 Subjects
Abstract:
... The effect of sudden augmentation with fish waste (FW) on an operating anaerobic digester was investigated. Fifteen repeated FW spikes (FWS) composed of 1% or 5% FW per working volume of digester were suddenly fed into semi-continuous operation of a mixture of sludge and food waste. Overall process efficiency was not inhibited by FW augmentation. The bacterial community were clustered differently ...
DOI:
10.1016/j.biortech.2022.127731

6. Relationship between ultraviolet-visible spectra and soluble species in the liquid phase of wastewater sludge during biological digestion under mesophilic and thermophilic conditions

Author:
Eskandar Poorasgari; Banu Örmeci
Source:
Biochemical engineering journal 2022 v.179 pp. 108318
ISSN:
1369-703X
Subject:
anaerobic digesters,   etc   ; absorption; aerobic digestion; anaerobic digestion; chemical oxygen demand; liquids; sludge; wastewater;     Show all 8 Subjects
Abstract:
... Absorption of ultraviolet (UV)-visible (Vis) light by the liquid phase of wastewater sludge during biological digestion was studied. Sludge samples were obtained from batch anaerobic and aerobic digestion experiments conducted at mesophilic and thermophilic temperatures, as well as influent and effluent of a full-scale anaerobic digester. In tandem with acquiring the UV-Vis spectra, the concentrat ...
DOI:
10.1016/j.bej.2021.108318

7. Model-based mid-infrared spectroscopy for on-line monitoring of volatile fatty acids in the anaerobic digester

Author:
Xiang-Yu Li; Yue Feng; Jian-Lu Duan; Li-Juan Feng; Qian Wang; Jing-Ya Ma; Wen-Zong Liu; Xian-Zheng Yuan
Source:
Environmental research 2022 v.206 pp. 112607
ISSN:
0013-9351
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; high performance liquid chromatography; models; near-infrared spectroscopy; research; titration; wavelet;     Show all 8 Subjects
Abstract:
... The performance of anaerobic digestion is significantly governed by the concentration of volatile fatty acids (VFAs). Though the titration and near-infrared spectroscopy have been used to measure the VFAs in the digester, there is still lack of the establishment of on-line monitoring of VFAs in practical application. An effective quantification method based on mid-infrared (MIR) spectroscopy was d ...
DOI:
10.1016/j.envres.2021.112607

8. Deterministic processes drive the microbial assembly during the recovery of an anaerobic digester after a severe ammonia shock

Author:
Laëtitia Cardona; Laurent Mazéas; Olivier Chapleur
Source:
Bioresource technology 2022 v.347 pp. 126432
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; Archaea; ammonia; anaerobic digestion; methane production; methanogens; microbial communities; microbiome; models; renewable energy sources; zeolites;     Show all 11 Subjects
Abstract:
... Anaerobic digestion allows to produce sustainable energy but the microbial community involved in this process is highly sensitive to perturbations. In this study, a longitudinal experiment was performed in two sets of triplicate bioreactors to evaluate the influence of ammonia addition on AD microbiome and its recovery. Zeolite was added in three reactors to mitigate the inhibition. Microbial dyna ...
DOI:
10.1016/j.biortech.2021.126432

9. Performance comparison of three high rate anaerobic bioreactors for poultry slaughterhouse wastewater treatment

Author:
M. Njoya; Z. Rinquest; Y. Williams; M. Basitere; S. K. O. Ntwampe
Source:
International journal of environmental science and technology 2022 v.19 no.9 pp. 8307-8328
ISSN:
1735-1472
Subject:
anaerobic digesters,   etc   ; biochemical oxygen demand; chemical oxygen demand; oils; organic matter; poultry; slaughterhouses; sludge; wastewater; wastewater treatment;     Show all 10 Subjects
Abstract:
... This study evaluated and compared the performance of three highly praised high rate anaerobic bioreactors (HRABs), including the expanded granular sludge bed (EGSB) bioreactor, the static granular bed reactor (SGBR), and the down-flow expanded granular bed reactor (DEGBR), for the treatment of poultry slaughterhouse wastewater (PSW) which is characterized by a high concentration in oil and grease, ...
DOI:
10.1007/s13762-021-03702-7

10. Comparison of Operating Methods in Cartridge Anaerobic Digestion of Corn Stover

Author:
Liangcheng Yang; Trevar Moran; Alicia Han
Source:
BioEnergy research 2022 v.15 no.2 pp. 1225-1231
ISSN:
1939-1234
Subject:
anaerobic digesters,   etc   ; ammonium nitrogen; anaerobic digestion; biogas; biomass; corn stover; energy; feedstocks; lignocellulose; methane production; pH; research;     Show all 12 Subjects
Abstract:
... Anaerobic digestion of lignocellulosic biomass faces changes such as biomass floating and effluent discharge. To overcome these challenges, a unique removable cartridge anaerobic digester was built and tested using corn stover as the feedstock. Three operating methods differing in the number of cartridges and days of rotation were tested. The first method used three cartridges, with each cartridge ...
DOI:
10.1007/s12155-021-10252-w

11. Influence of enclosure filled with phase change material on photo-thermal regulation of direct absorption anaerobic reactor: Numerical and experimental study

Author:
Changyu Liu; Yongxiang Sun; Dong Li; Ji Bian; Yangyang Wu; Pengfei Li; Yong Sun
Source:
Applied energy 2022 v.313 pp. 118885
ISSN:
0306-2619
Subject:
anaerobic digesters,   etc   ; absorption; biogas; electric power; energy; fermentation; heat; insulating materials; methane; models; phase transition; slurries; temperature;     Show all 13 Subjects
Abstract:
... Direct absorption methane reactor can maintain the fermentation process of microorganism by utilizing solar absorption and scattering of media in biogas reactor to improve the slurry temperature. However, direct absorption heating alone can save the corresponding electric energy and ensure the normal fermentation process of the biogas slurry in the reactor, but there are still problems of big temp ...
DOI:
10.1016/j.apenergy.2022.118885

12. Anaerobic co‐digestion of food waste and microalgae in an integrated treatment plant

Author:
Luísa Ornelas Ferreira; Sergi Astals; Fabiana Passos
Source:
Journal of chemical technology and biotechnology 2022 v.97 no.6 pp. 1545-1554
ISSN:
0268-2575
Subject:
anaerobic digesters,   etc   ; algae culture; alkalinity; anaerobic digestion; biodegradability; biogas; biomass; food waste; methane; methane production; microalgae; pH;     Show all 12 Subjects
Abstract:
... BACKGROUND: Anaerobic co‐digestion has been considered for improving anaerobic digesters’ stability and methane production, particularly for residues with low biodegradability or lack of alkalinity. Food waste was identified as a biomass with macro and micronutrients unbalance and low alkalinity content, both of which hamper its anaerobic digestion. The present study focused on evaluating the anae ...
DOI:
10.1002/jctb.6900

13. Investigation on the utilization of coal washery rejects by different microbial sources for biogenic methane production

Author:
Vinitha Ponnudurai; Ravikumar Rajarathinam; Kirupa Sankar Muthuvelu; Sivasubramanian Velmurugan; Radha Krishna Nalajala; Loganathan Arumugam
Source:
Chemosphere 2022 v.287 pp. 132165
ISSN:
0045-6535
Subject:
anaerobic digesters,   etc   ; coal; cow manure; energy; gas production (biological); inoculum; methane; methane production; microbial culture; sludge; slurries;     Show all 11 Subjects
Abstract:
... High energy consumption and depletion of fossil fuels lead to the introduction of new technologies to produce alternative fuels with fewer emissions of greenhouse gases. The present investigation was focused to utilize the waste coal washery rejects as a substrate to produce biogenic methane under optimum conditions. Experiments were performed to explore the efficiency of non-coal samples (cow dun ...
DOI:
10.1016/j.chemosphere.2021.132165

14. Anaerobic Microbial Dechlorination of 6:2 Chlorinated Polyfluorooctane Ether Sulfonate and the Underlying Mechanisms

Author:
Shujun Yi; Nadia Morson; Elizabeth A. Edwards; Diwen Yang; Runzeng Liu; Lingyan Zhu; Scott A. Mabury
Source:
Environmental science & technology 2022 v.56 no.2 pp. 907-916
ISSN:
1520-5851
Subject:
anaerobic digesters,   etc   ; Dehalobacter; Dehalococcoides; Geobacter; aquifers; biosolids; dechlorination; metabolites; microbial communities; perfluorooctane sulfonic acid; sludge; sorption; sulfonates; wastewater;     Show all 14 Subjects
Abstract:
... The microbial transformation potential of 6:2 chlorinated polyfluorooctane ether sulfonate (6:2 Cl-PFESA) was explored in anaerobic microbial systems. Microbial communities from anaerobic wastewater sludge, an anaerobic digester, and anaerobic dechlorinating cultures enriched from aquifer materials reductively dechlorinated 6:2 Cl-PFESA to 6:2 hydrogen-substituted polyfluorooctane ether sulfonate ...
DOI:
10.1021/acs.est.1c05475

15. Co-occurrence network analysis reveals loss of microbial interactions in anaerobic digester subjected to repeated organic load shocks

Author:
Jericho Victor Mercado; Mitsuhiko Koyama; Kiyohiko Nakasaki
Source:
Water research 2022 v.221 pp. 118754
ISSN:
0043-1354
Subject:
anaerobic digesters,   etc   ; Anaerovorax; Spirochaetales; Synergistales; anaerobic digestion; circular economy; genes; methane; methane production; microbial communities; microbiome; research; water;     Show all 13 Subjects
Abstract:
... Fluctuations in the anaerobic digestion (AD) organic loading rate (OLR) cause shocks to the AD microbiome, which lead to unstable methane productivity. Managing these fluctuations requires a larger digester, which is impractical for community-scale applications, limiting the potential of AD in advancing a circular economy. To allow operation of small-scale AD while managing OLR fluctuations, we ne ...
DOI:
10.1016/j.watres.2022.118754

16. Optimisation of energy usage and carbon emissions monitoring using MILP for an advanced anaerobic digester plant

Author:
Harry Laing; Chris O'Malley; Anthony Browne; Tony Rutherford; Tony Baines; Andrew Moore; Ken Black; Mark J. Willis
Source:
Energy 2022 v.256 pp. 124577
ISSN:
0360-5442
Subject:
anaerobic digesters,   etc   ; biogas; carbon; carbon dioxide; electricity; energy; heat; income; models; municipal wastewater; natural gas; steam; wastewater treatment;     Show all 13 Subjects
Abstract:
... This paper proposes a realistic model for energy and carbon management of an advanced municipal wastewater treatment works. Through minimisation of total cost of operations, it provides operators with a visual daily operational schedule based on varying tariffs. This site is the first in the UK with a mixed operational strategy for biomethane produced on site: to burn in CHP (Combined Heat and Pow ...
DOI:
10.1016/j.energy.2022.124577

17. Artificial Intelligence Approach for Estimating Dairy Methane Emissions

Author:
Seongeun Jeong; Marc L. Fischer; Hanna Breunig; Alison R. Marklein; Francesca M. Hopkins; Sebastien C. Biraud
Source:
Environmental science & technology 2022 v.56 no.8 pp. 4849-4858
ISSN:
1520-5851
Subject:
anaerobic digesters,   etc   ; artificial intelligence; dairy industry; environmental science; greenhouse gases; herd size; humans; inventories; methane; remote sensing; California;     Show all 11 Subjects
Abstract:
... California’s dairy sector accounts for ∼50% of anthropogenic CH₄ emissions in the state’s greenhouse gas (GHG) emission inventory. Although California dairy facilities’ location and herd size vary over time, atmospheric inverse modeling studies rely on decade-old facility-scale geospatial information. For the first time, we apply artificial intelligence (AI) to aerial imagery to estimate dairy CH₄ ...
DOI:
10.1021/acs.est.1c08802

18. In-situ microaeration of anaerobic digester treating buffalo manure for enhanced biogas yield

Author:
Iftikhar Zeb; Sana Yousaf; Muhammad Ali; Aqsa Yasmeen; Anwar Zeb Khan; Junaid Ahmad Tariq; Quanbao Zhao; Arshad Mehmood Abbasi; Raza Ahmad; Tariq Mahmood Khalil; Asim Yaqoob; Muhammad Bilal
Source:
Renewable energy 2022 v.181 pp. 843-850
ISSN:
0960-1481
Subject:
anaerobic digesters,   etc   ; acid soluble lignin; aeration; anaerobic digestion; biogas; biomass; buffaloes; gas production (biological); lignin; lignocellulose; logit analysis;     Show all 11 Subjects
Abstract:
... Microaeration pretreatment can enhance lignin degradation of lignocellulosic biomass and subsequent biogas production during anaerobic digestion (AD). However, the reported values of effective aeration dose, aeration contact time, and aeration frequency differ with substrates riddling the selection of a suitable combination. A serial approach was adopted to identify the suitable combination for th ...
DOI:
10.1016/j.renene.2021.09.089

19. Combined system for wastewater treatment: ozonization and coagulation via tannin-based agent for harvesting microalgae by dissolved air flotation

Author:
Gislayne Alves Oliveira; Ênio Leandro Machado; Rhauani Segatto Knoll; Naira Dell’Osbel; Gustavo Stolzenberg Colares; Lúcia Ribeiro Rodrigues
Source:
Environmental technology 2022 v.43 no.9 pp. 1370-1380
ISSN:
1479-487X
Subject:
anaerobic digesters,   etc   ; air; biomass; coagulants; coagulation; color; electrical conductivity; environmental technology; flocculation; microalgae; ozonation; ozone; turbidity; wastewater; wastewater treatment;     Show all 15 Subjects
Abstract:
... This study evaluated the performance of urban wastewater treatment in pilot-plant by an integrated system consisting of anaerobic reactor, microalgae cultivation, Venturi tube ozone recirculation, coagulation/flocculation with tannin-based agent natural coagulant, and dissolved air flotation (DAF). Ozone concentrations (without ozone, 0.13 and 0.25 mg O₃/mg of biomass) and tannin dosages (65, 85 a ...
DOI:
10.1080/09593330.2020.1830181

20. Effects of carbon cloth on anaerobic digestion of high concentration organic wastewater under various mixing conditions

Author:
Dong Feng; Ao Xia; Yun Huang; Xianqing Zhu; Xun Zhu; Qiang Liao
Source:
Journal of hazardous materials 2022 v.423 pp. 127100
ISSN:
0304-3894
Subject:
anaerobic digesters,   etc   ; Methanosaeta; anaerobic digestion; biofilm; carbon; chemical oxygen demand; energy efficiency; methane production; methanogens; voltammetry; wastewater; wastewater treatment;     Show all 12 Subjects
Abstract:
... Anaerobic digestion (AD) has been considered an energy efficient strategy in treating high concentration organic wastewater rich in volatile fatty acids (VFAs). Continuous stirred tank reactors (CSTRs) have been widely applied in the AD process; however, they may suffer from low efficiency with a relatively short hydraulic retention time (HRT) in wastewater treatment. In this study, carbon cloth w ...
DOI:
10.1016/j.jhazmat.2021.127100