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1. Combination of the OSA process with thermal treatment at moderate temperature for excess sludge minimization

Author:
Corsino, Santo Fabio; Capodici, Marco; Di Trapani, Daniele; Torregrossa, Michele; Viviani, Gaspare
Source:
Bioresource technology 2020 v.300 pp. 122679
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; bacteria; biomass; heat treatment; polymers; sludge; temperature;     Show all 7 Subjects
Abstract:
... This study investigated the chance to couple the conventional Oxic Settling Anaerobic (OSA) process with a thermic treatment at moderate temperature (35 °C). The maximum excess sludge reduction rate (80%) was achieved when the plant was operated under 3 h of hydraulic retention time (HRT). Compared with the conventional OSA system, the thermic treatment enabled a further improvement in excess slud ...
DOI:
10.1016/j.biortech.2019.122679

2. Performance evaluation and substrate removal kinetics in an up-flow anaerobic hybrid membrane bioreactor treating simulated high-strength wastewater

Author:
Burman, Isha; Sinha, Alok
Source:
Environmental technology 2020 v.41 no.3 pp. 309-321
ISSN:
1479-487X
Subject:
anaerobic digesters,   etc   ; chemical oxygen demand; foams; models; polyurethanes; wastewater;     Show all 6 Subjects
Abstract:
... The prime objective of the present study is to evaluate the performance of novel up-flow anaerobic hybrid membrane bioreactor (An-HMBR) treating high-strength wastewater (synthetic) using polyurethane foam as filter media. Treatment efficiency of the entire An-HMBR varied from 88–97% corresponding to 0.67–3.90 d of hydraulic retention time (HRT) with organic loading rate of 6.4–1.06 kg COD m⁻³ d⁻¹ ...
DOI:
10.1080/09593330.2018.1498132

3. Microbial electrochemical sensors for volatile fatty acid measurement in high strength wastewaters: A review

Author:
Hill, Andrew; Tait, Stephan; Baillie, Craig; Virdis, Bernardino; McCabe, Bernadette
Source:
Biosensors & bioelectronics 2020 v.165 pp. 112409
ISSN:
0956-5663
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; biofouling; biosensors; electrodes; ion-exchange membranes; monitoring; slaughterhouses; volatile fatty acids; wastewater;     Show all 10 Subjects
Abstract:
... In this review, the use of MESe are evaluated in the monitoring of volatile fatty acids (VFAs) during the anaerobic digestion of high strength wastewater, with a focus on slaughterhouse wastewater. VFAs are identified as a key intermediary in anaerobic digestion, hence their accumulation could be used to infer possible process instability of anaerobic digesters. Current sample measurement for VFAs ...
DOI:
10.1016/j.bios.2020.112409

4. Granular sludge is a preferable inoculum for the biochemical methane potential assay for two complex substrates

Author:
Posmanik, Roy; Kim, Andrew H.; Labatut, Rodrigo A.; Usack, Joseph G.; Angenent, Largus T.
Source:
Bioresource technology 2020 v.309 pp. 123359
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; acclimation; biodegradability; biogas; biomass; inoculum; methane; organic wastes; sludge;     Show all 9 Subjects
Abstract:
... The biochemical methane potential (BMP) assay is a standard method for characterizing biomethane potential and anaerobic biodegradability organic waste streams. Therefore, the BMP protocol must be standardized to reliably compare these parameters for various substrates. Here, the effect of inoculum selection on biomethane potential was investigated through BMP tests using two different substrates ...
DOI:
10.1016/j.biortech.2020.123359

5. Isolation and characterization of novel indigenous facultative quorum quenching bacterial strains for ambidextrous biofouling control

Author:
Shah, Syed Salman Ali; Choo, Kwang-Ho
Source:
Bioresource technology 2020 v.308 pp. 123269
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; Pseudomonas aeruginosa; bacteria; biofilm; biofouling; carbon; membrane bioreactors; oxygen; sludge;     Show all 9 Subjects
Abstract:
... Quorum quenching (QQ), the disruption of microbial communication, has proven to be effective as an innovative anti-biofouling strategy for membrane bioreactors (MBRs). However, QQ bacteria for anaerobic environments have not been extensively analyzed in previous research. This study thus investigated facultative QQ bacterial strains that exhibit potential for use in aerobic and anaerobic MBRs. Two ...
DOI:
10.1016/j.biortech.2020.123269

6. Simultaneous sludge minimization, biological phosphorous removal and membrane fouling mitigation in a novel plant layout for MBR

Author:
Corsino, Santo Fabio; de Oliveira, Taissa Silva; Di Trapani, Daniele; Torregrossa, Michele; Viviani, Gaspare
Source:
Journal of environmental management 2020 v.259 pp. 109826
ISSN:
0301-4797
Subject:
anaerobic digesters,   etc   ; chemical oxygen demand; fouling; nitrogen; nutrients; organic carbon; phosphorus; sludge;     Show all 8 Subjects
Abstract:
... The integration of one anaerobic reactor in the mainstream (AMSR) of a pre-denitritication-MBR was evaluated with the aim to achieve simultaneous sludge minimization and phosphorous removal. The excess sludge production was reduced by 64% when the AMSR was operated under 8 h of hydraulic retention time (HRT). The highest nutrients removal performances referred to organic carbon (98%), nitrogen (90 ...
DOI:
10.1016/j.jenvman.2019.109826

7. Biohythane production via single-stage anaerobic fermentation using entrapped hydrogenic and methanogenic bacteria

Author:
Ta, Doan Thanh; Lin, Chiu-Yue; Ta, Thi Minh Ngoc; Chu, Chen-Yeon
Source:
Bioresource technology 2020 v.300 pp. 122702
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; bacteria; bacterial biomass; chemical oxygen demand; fermentation; hydrogen; methane; methane production; methanogens;     Show all 9 Subjects
Abstract:
... This study demonstrates the continuous biohythane production in a single-stage anaerobic digester using a biomass mixture of separately entrapped hydrogenic and methanogenic bacteria (H₂- and CH₄-producing bacteria, respectively). The entrapped hydrogenic/methanogenic bacteria biomass ratios of 1/4, 2/3, 3/2 and 4/1 were tested and shown to have a great effect on the single-stage biohythane produc ...
DOI:
10.1016/j.biortech.2019.122702

8. Prediction of anaerobic digestion performance and identification of critical operational parameters using machine learning algorithms

Author:
Wang, Luguang; Long, Fei; Liao, Wei; Liu, Hong
Source:
Bioresource technology 2020 v.298 pp. 122495
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; algorithms; anaerobic digestion; artificial intelligence; carbon; data collection; methane production; models; prediction; regression analysis;     Show all 10 Subjects
Abstract:
... Machine learning has emerges as a novel method for model development and has potential to be used to predict and control the performance of anaerobic digesters. In this study, several machine learning algorithms were applied in regression and classification models on digestion performance to identify determinant operational parameters and predict methane production. In the regression models, k-nea ...
DOI:
10.1016/j.biortech.2019.122495

9. Management and design of biogas digesters: A non-calibrated heat transfer model

Author:
Vilms Pedersen, S.; Martí-Herrero, J.; Singh, A.K.; Sommer, S.G.; Hafner, S.D.
Source:
Bioresource technology 2020 v.296 pp. 122264
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; biogas; climate; heat transfer; models; solar radiation; temperature profiles; wastewater treatment; Denmark; Vietnam;     Show all 10 Subjects
Abstract:
... A thermal balance modeling framework is developed, based on heat transfer-resistance networks. The heat transfer model accounts for effects of digester- design, location and operation, including effects of solar irradiance, external heating and ambient climate. We demonstrate extendibility of the framework by using the model in dynamic simulations of substrate temperature for digesters comprising ...
DOI:
10.1016/j.biortech.2019.122264

10. Eco-compatible biochar mitigates volatile fatty acids stress in high load thermophilic solid-state anaerobic reactors treating agricultural waste

Author:
Meng, Lingyu; Xie, Li; Suenaga, Toshikazu; Riya, Shohei; Terada, Akihiko; Hosomi, Masaaki
Source:
Bioresource technology 2020 v.309 pp. 123366
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; agricultural wastes; anaerobic digestion; biochar; buffering capacity; inoculum; rice straw; swine; urine; volatile fatty acids;     Show all 10 Subjects
Abstract:
... A high concentration of accumulated volatile fatty acids (VFAs) is one of the most important factors resulting in reactor failure during solid-state anaerobic digestion. In this study, the feedstock-to-inoculum (F/I) ratio (0.5, 2, 3, 4 and 6) and the recovery method after failure (biochar addition or inoculum addition) were investigated in batch solid-state anaerobic digestion fed with rice straw ...
DOI:
10.1016/j.biortech.2020.123366

11. Techno-economic analysis, kinetics, global warming potential comparison and optimization of a pilot-scale unheated semi-continuous anaerobic reactor in a hilly area: For north Indian hilly states

Author:
Choudhary, Ankur; Kumar, Ashish; Kumar, Sudhir
Source:
Renewable energy 2020 v.155 pp. 1181-1190
ISSN:
0960-1481
Subject:
anaerobic digesters,   etc   ; altitude; anaerobic digestion; biogas; composting; economic investment; energy; food waste; global warming potential; landfills; summer; winter; India;     Show all 13 Subjects
Abstract:
... A field investigation on anaerobic digestion of food waste for 235 days in a 3000 L semi-continuous biogas reactor has been conducted in the hilly area of Solan (1544 m above mean sea level), Himachal Pradesh, India. To the best of our knowledge, this is the first study which optimized organic loading rate for food waste in ambient condition for summer (0.34 g VS/L/day) and winter season (0.24 g V ...
DOI:
10.1016/j.renene.2020.04.034

12. Techno-economic assessment of hybrid CSP-biogas power plants

Author:
Petrollese, Mario; Cocco, Daniele
Source:
Renewable energy 2020 v.155 pp. 420-431
ISSN:
0960-1481
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; biogas; case studies; economic analysis; energy; financial economics; power plants; simulation models; solar energy; Italy;     Show all 11 Subjects
Abstract:
... This study aims to investigate the performance and economic benefits arising from the integration of concentrating solar power (CSP) plants with anaerobic digestion processes. To demonstrate the capabilities of hybrid CSP-biogas plants, the CSP section of the Ottana solar facility (Italy) is considered as a case study. A simulation model for the performance analysis of the hybrid system is develop ...
DOI:
10.1016/j.renene.2020.03.106

13. Anaerobic digestion of purple phototrophic bacteria – The release step of the partition-release-recover concept

Author:
Hülsen, Tim; Lu, Yang; Rodríguez, Iván; Segura, Yolanda; Martínez, Fernando; Puyol, Daniel; Batstone, Damien J.
Source:
Bioresource technology 2020 v.306 pp. 123125
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; chemical treatment; energy; nitrogen; nitrogen content; nutrients; photosynthetic bacteria; solubilization; sonication; temperature; wastewater treatment;     Show all 12 Subjects
Abstract:
... Purple phototrophic bacteria (PPB) have been proposed as a high-growth, assimilative option for wastewater treatment. The original partition-release-recover concept proposal requires their near complete digestion and release (and subsequent recovery) of energy and nutrients in an anaerobic digester. While the growth (partition) step has been extensively assessed, no work has been done on their ana ...
DOI:
10.1016/j.biortech.2020.123125

14. Biochar addition with Fe impregnation to reduce H2S production from anaerobic digestion

Author:
Choudhury, Abhinav; Lansing, Stephanie
Source:
Bioresource technology 2020 v.306 pp. 123121
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; biochar; corn stover; hydrogen sulfide; iron; methane; methane production; nutrient content; particle size;     Show all 10 Subjects
Abstract:
... Corn stover biochar (CSB) and maple biochar (MB) were added into anaerobic digesters and evaluated for hydrogen sulfide (H₂S) reductions. This was the first study to show Fe-impregnated biochar can eliminate H₂S production. The novel study evaluated biochar addition on H₂S reduction and nutrient concentrations using three experiments to test the effect of: 1) biochar concentration, 2) biochar part ...
DOI:
10.1016/j.biortech.2020.123121

15. Enhanced isophthalonitrile complexation-reduction removal using a novel anaerobic fluidized bed reactor in a bioelectrochemical system based on electric field activation (AFBR-EFA)

Author:
Cui, Tao; Wang, Yi; Wang, Xueye; Zhang, Yonghao; Han, Weiqing; Li, Jiansheng; Sun, Xiuyun; Shen, Jinyou; Wang, Lianjun
Source:
Bioresource technology 2020 v.306 pp. 123115
ISSN:
0960-8524
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; chemical reduction; electric field; electrical charges; fluidized beds; hydrogen cyanide; methanol; nitriles; poisoning; synergism; toxicity;     Show all 12 Subjects
Abstract:
... On account of the recalcitrant and highly toxicity of organonitrile substrates, traditional processes are limited by HCN poisoning thus inefficient. This article proposed a novel anaerobic fluidized bed reactor with electric field activation (AFBR-EFA) which had a 260-day continuous operation. The operation aims to explore the practicability of the enhanced reduction of isophthalonitrile (IPN), wi ...
DOI:
10.1016/j.biortech.2020.123115

16. Spatial and temporal differences in the composition and structure of bacterial assemblages in biofilms of a rotating algal-bacterial contactor system treating high-strength anaerobic digester filtrate

Author:
Johnson, Daniel B.; Schideman, Lance C.; Canam, Thomas; Hosen, Jacob D.; Hudson, Robert J.M.
Source:
Bioresource technology reports 2020 v.10 pp. 100413
ISSN:
2589-014X
Subject:
anaerobic digesters,   etc   ; Nitrosomonas; ammonia; autotrophs; bacteria; biofilm; dissolved inorganic carbon; feedstocks; filtrates; heterotrophs; surface area; temporal variation;     Show all 12 Subjects
Abstract:
... The microbial assemblages in biofilms growing on rotating algal-bacterial contactors (RACs) used to treat high-strength anaerobic digester filtrate were characterized during a 4-month study. Typical RAC-based systems supplied with feedstocks containing high total ammonia and comparatively low dissolved inorganic carbon ratios are nitrite-accumulating. The RACs have biofilms on their sunlit exterio ...
DOI:
10.1016/j.biteb.2020.100413

17. Synergistic effect and supernatant nitrogen reduction from anaerobic co-digestion of sewage sludge and pig manure

Author:
Bai, Xuanye; Chen, Yen-Chih
Source:
Bioresource technology reports 2020 v.10 pp. 100424
ISSN:
2589-014X
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; dewatered biosolids; kinetics; land application; methane; methane production; nitrogen; pig manure; sewage sludge; synergism; total nitrogen;     Show all 12 Subjects
Abstract:
... The degradation kinetics of anaerobic co-digestion of pig manure (PM) and sewage sludge (SS) were investigated for a utility that has concerns on nitrogen in the digestate return stream. In this study, batch-scale anaerobic reactors were set up with SS/PM volatile solids (VS) ratios at 7:1, 14:1, 21:1, and mono-digestions of SS and PM. PM (239 mL/g VSₐddₑd) produced more methane than SS (182 mL/g ...
DOI:
10.1016/j.biteb.2020.100424

18. Anaerobic hybrid membrane bioreactor for treatment of synthetic leachate: Impact of organic loading rate and sludge fractions on membrane fouling

Author:
Burman, Isha; Sinha, Alok
Source:
Waste management 2020 v.108 pp. 41-50
ISSN:
0956-053X
Subject:
anaerobic digesters,   etc   ; ceramics; chemical oxygen demand; cleaning; fouling; landfill leachates; polymers; prediction; regression analysis; sludge; total suspended solids; waste management;     Show all 12 Subjects
Abstract:
... In the present study, the treatment of synthetic landfill leachate was carried out using a lab-scale anaerobic hybrid membrane bioreactor (An-HMBR). The reactor was operated for 250 days at two days of hydraulic retention time (HRT). Average chemical oxygen demand (COD) removal efficiency was ≥ 88% at steady-state conditions at 100% raw leachate. As organic loading rate (OLR) increased from 1.6 to ...
DOI:
10.1016/j.wasman.2020.04.031

19. How does synthetic musks affect methane production from the anaerobic digestion of waste activated sludge?

Author:
Wei, Wei; Wu, Lan; Liu, Xiaoqing; Chen, Zhijie; Hao, Qiang; Wang, Dongbo; Liu, Yiwen; Peng, Lai; Ni, Bing-Jie
Source:
The Science of the total environment 2020 v.713 pp. 136594
ISSN:
0048-9697
Subject:
anaerobic digesters,   etc   ; activated sludge; anaerobic digestion; hydrolysis; long term effects; methane; methane production; microbial communities; models; solubilization; wastewater treatment;     Show all 11 Subjects
Abstract:
... The increasing use of synthetic musks has led to a large amount of synthetic musks retaining in waste activated sludge (WAS) via wastewater treatment, thereby entering anaerobic digester. However, the potential effects of synthetic musks on WAS anaerobic digestion remain unknown. Herein, this study selected the dominant galaxolide (HHCB) in WAS as the typical synthetic musks and experimentally eva ...
DOI:
10.1016/j.scitotenv.2020.136594

20. Arsenic volatilization in roxarsone-loaded digester: Insight into the main factors and arsM genes

Author:
Tang, Rui; Yuan, Shoujun; Wang, Yulan; Wang, Wei; Wu, Guangxue; Zhan, Xinmin; Hu, Zhenhu
Source:
The Science of the total environment 2020 v.711 pp. 135123
ISSN:
0048-9697
Subject:
anaerobic digesters,   etc   ; anaerobic digestion; animal manures; arsenic; exposure duration; genes; livestock; roxarsone; sludge; volatile fatty acids; volatilization; wastewater; wastewater treatment;     Show all 13 Subjects
Abstract:
... The extensive use of roxarsone (ROX) in livestock and poultry husbandry causes the production of arylarsenic-contaminated manure/wastewater. Anaerobic digestion is a conventional technique for livestock manure/wastewater treatment. However, the factors affecting arsenic volatilization are poorly understood in arylarsenic-loaded anaerobic reactors. The main factors such as ROX loading, exposure tim ...
DOI:
10.1016/j.scitotenv.2019.135123