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1. Effect of the volume of methane released into respiration chambers on full system methane recovery

Author:
Arceo-Castillo, Jeyder I.; Montoya-Flores, Maria D.; Molina-Botero, Isabel C.; Piñeiro-Vázquez, Angel T.; Aguilar-Pérez, Carlos F.; Ayala-Burgos, Armin J.; Solorio-Sánchez, Francisco J.; Castelán-Ortega, Octavio A.; Quintana-Owen, Patricia; Ku-Vera, Juan C.
Source:
Animal feed science and technology 2019
ISSN:
0377-8401
Subject:
methane production,   etc   ; air; cattle; methane; mixing;     Show all 5 Subjects
Abstract:
... The respiration chamber method is considered to be the most precise approach for measuring enteric methane emissions in cattle. A set of experimental runs was carried out in which increasing volumes of pure methane (168.5, 194.9, 234.9, 264.9, 301.0, 339.8, and 375.7 L per run) were gravimetrically released into open-circuit respiration chambers to simulate the volumes of methane eructated by catt ...
DOI:
10.1016/j.anifeedsci.2019.02.001

2. Modeling the fate of organic nitrogen during anaerobic digestion: Development of a bioaccessibility based ADM1

Author:
Bareha, Y.; Girault, R.; Guezel, S.; Chaker, J.; Trémier, A.
Source:
Water research 2019 v.154 pp. 298-315
ISSN:
0043-1354
Subject:
methane production,   etc   ; ammonium; anaerobic digestion; bioavailability; fractionation; models; organic nitrogen;     Show all 7 Subjects
Abstract:
... Simulating the fate of nitrogen during anaerobic digestion is required to predict the characteristics of digestates and to improve their exploitation for agricultural uses. The aim of this study was to develop a modified ADM1 model that includes bioaccessibility-based fractionation to accurately simulate the fate of nitrogen during anaerobic digestion. To this end, two complementary approaches wer ...
DOI:
10.1016/j.watres.2019.02.011

3. Enhanced methane production from waste activated sludge by combining calcium peroxide with ultrasonic: Performance, mechanism, and implication

Author:
Li, Xiaoming; Liu, Yu; Xu, Qiuxiang; Liu, Xuran; Huang, Xiaoding; Yang, Jingnan; Wang, Dongbo; Wang, Qilin; Liu, Yiwen; Yang, Qi
Source:
Bioresource technology 2019 v.279 pp. 108-116
ISSN:
0960-8524
Subject:
methane production,   etc   ; activated sludge; anaerobic digestion; biodegradability; calcium peroxide; ultrasonics;     Show all 6 Subjects
Abstract:
... This study reported a novel and high-efficient pretreatment method for anaerobic digestion, i.e., combining calcium peroxide (CaO2) with ultrasonic (US), by which not only the methane production was remarkably improved but also the removal of refractory organic contaminants was enhanced. Experimental results showed the optimum condition for methane production was achieved at 0.1 g CaO2/g VSS combi ...
DOI:
10.1016/j.biortech.2019.01.115

4. Fluxes of N2O, CH4 and soil respiration as affected by water and nitrogen addition in a temperate desert

Author:
Yue, Ping; Cui, Xiaoqing; Gong, Yanming; Li, Kaihui; Goulding, Keith; Liu, Xuejun
Source:
Geoderma 2019 v.337 pp. 770-772
ISSN:
0016-7061
Subject:
methane production,   etc   ; desert soils; methane; nitrogen; nitrous oxide; soil respiration;     Show all 6 Subjects
Abstract:
... An experiment was conducted to investigate the effect of precipitation and N deposition on N2O and CH4 fluxes and soil respiration (Rs) in the Gurbantunggut Desert from September 2014 to August 2015. The desert was a weak sink for CH4 (−0.92 kg C ha−1 yr−1) and a small source of N2O (+0.13 kg N ha−1 yr−1) and the annual rate of Rs was 874 kg C ha−1. Our work confirmed a relatively strong sink for ...
DOI:
10.1016/j.geoderma.2018.10.020

5. Feasibility of dry anaerobic digestion of beer lees for methane production and biochar enhanced performance at mesophilic and thermophilic temperature

Author:
Sun, Caiyu; Liu, Fang; Song, Zhiwei; Wang, Jing; Li, Yongfeng; Pan, Yu; Sheng, Tao; Li, Lixin
Source:
Bioresource technology 2019 v.276 pp. 65-73
ISSN:
0960-8524
Subject:
methane production,   etc   ; anaerobic digestion; biochar; cows; lees; temperature;     Show all 6 Subjects
Abstract:
... This study investigated the feasibility of dry anaerobic digestion using beer lees as substrate and the effect of cow manure-derived biochar addition on dry anaerobic digestion performance at mesophilic and thermophilic temperature, respectively. With TS content of 25%, maximum cumulative methane production and yield were achieved to be 5230 ± 91 mL d−1 and 220.1 ± 7.7 mL g−1 VS at mesophilic cond ...
DOI:
10.1016/j.biortech.2018.12.105

6. Enhancing methane production of excess sludge and dewatered sludge with combined low frequency CaO-ultrasonic pretreatment

Author:
Yuan, Hairong; Guan, Ruolin; Wachemo, Akiber Chufo; Zhu, Chao; Zou, Dexun; Li, Ying; Liu, Yanping; Zuo, Xiaoyu; Li, Xiujin
Source:
Bioresource technology 2019 v.273 pp. 425-430
ISSN:
0960-8524
Subject:
methane production,   etc   ; acetic acid; anaerobic digestion; biodegradability; ethanol; sludge;     Show all 6 Subjects
Abstract:
... Methane production of excess sludge (ES) and dewatered sludge (DS) were investigated with low frequency CaO-ultrasonic pretreatment. The results showed that the concentrations of SCOD and VFAs in pretreated ES (P-ES) and DS (P-DS) were 212.11% and 75.26%, 270.30% and 159.52% higher than those of untreated ES and DS, respectively. The contents of acetic acid and ethanol comprised 83.87%–92.88% of t ...
DOI:
10.1016/j.biortech.2018.10.040

7. Modeling the anaerobic co-digestion of solid waste: From batch to semi-continuous simulation

Author:
Kouas, Mokhles; Torrijos, Michel; Sousbie, Philippe; Harmand, Jérôme; Sayadi, Sami
Source:
Bioresource technology 2019 v.274 pp. 33-42
ISSN:
0960-8524
Subject:
methane production,   etc   ; anaerobic digestion; data collection; methane; models; solid wastes;     Show all 6 Subjects
Abstract:
... The main purpose of this study was to validate the use of a simple model for forecasting methane production in co-digestion reactors run semi-continuously using substrate data acquired in batch mode. Firstly, seven solid substrates were characterized individually in successive batches to assess their Biochemical Methane Potential (BMP) and kinetic parameters. Afterwards, eight mixtures of two, thr ...
DOI:
10.1016/j.biortech.2018.11.065

8. Comparison of five methods for the estimation of methane production from vented in vitro systems

Author:
Alvarez Hess, Pablo S; Eckard, Richard J; Jacobs, Joe L; Hannah, Murray C; Moate, Peter J
Source:
Journal of the science of food and agriculture 2019 v.99 no.1 pp. 109-116
ISSN:
0022-5142
Subject:
methane production,   etc   ; bags; carbon dioxide; feeds; headspace analysis; methane; prediction;     Show all 7 Subjects
Abstract:
... BACKGROUND: There are several methods for estimating methane production (MP) from feedstuffs in vented in vitro systems. One method (A; ‘gold standard’) measures methane proportions in the incubation bottle's headspace (HS) and in the vented gas collected in gas bags. Four other methods (B, C, D and E) measure methane proportion in a single gas sample from the HS. Method B assumes the same methane ...
DOI:
10.1002/jsfa.9149

9. Anaerobic digestion performance and microbial community structure of corn stover in three-stage continuously stirred tank reactors

Author:
Liu, Yue; Wachemo, Akiber Chufo; Yuan, HaiRong; Li, XiuJin
Source:
Bioresource technology 2019 v.287 pp. 121339
ISSN:
0960-8524
Subject:
methane production,   etc   ; Methanobacteriaceae; Methanosarcinaceae; Ruminococcaceae; Syntrophomonadaceae; anaerobic digestion; bioenergy; corn stover; methanogens; microbial communities;     Show all 10 Subjects
Abstract:
... A new three-stage anaerobic digestion (TSAD) system combining the two-stage and serial continuously stirred tank reactor (CSTR) was developed for the high-efficiency anaerobic digestion (AD) of corn stover. At the same hydraulic retention time of 50 d and organic loading rate (OLR) of 1.8 g TS L−1 d−1, TSAD achieved a 33.2–50.5% higher methane yield than that of the traditional one-stage and two-s ...
DOI:
10.1016/j.biortech.2019.121339

10. Enhancing hyper-thermophilic hydrolysis pre-treatment of chicken manure for biogas production by in-situ gas phase ammonia stripping

Author:
Yin, Dong-Min; Qiao, Wei; Negri, Camilla; Adani, Fabrizio; Fan, Run; Dong, Ren-Jie
Source:
Bioresource technology 2019 v.287 pp. 121470
ISSN:
0960-8524
Subject:
methane production,   etc   ; ammonia; ammonium nitrogen; anaerobic digestion; bacteria; gas production (biological); gases; hydrolysis; methanogens; poultry manure;     Show all 10 Subjects
Abstract:
... Hydrolysis is normally the rate limiting step for anaerobic digestion (AD). In this study, hyper-thermophilic (70 °C) pre-treatment of chicken manure under HRTs of 10, 5, 3, 2 and 1 d(s) was investigated to enhance the hydrolysis efficiency for biogas production. In-situ phase gas stripping was integrated into the pre-treatment reactor to remove ammonia-N and to enhance the hydrolysis performance. ...
DOI:
10.1016/j.biortech.2019.121470

11. Effects of sodium hypochlorite concentration on the methanogenic activity in an anaerobic fluidized membrane bioreactor

Author:
Lee, Eunseok; Rout, Prangya Ranjan; Shin, Chungheon; Bae, Jaeho
Source:
The Science of the total environment 2019 v.678 pp. 85-93
ISSN:
0048-9697
Subject:
methane production,   etc   ; activated carbon; biofilm; biomass; cleaning; liquids; membrane bioreactors; sodium hypochlorite; toxicity;     Show all 9 Subjects
Abstract:
... The effect of membrane cleaning chemical, NaOCl on specific acetoclastic methanogenic activity (SAMA) of biomass in the anaerobic fluidized membrane bioreactors (AFMBRs) was assessed. Granular activated carbon (GAC) was used as a fluidizing media in the AFMBR to provide membrane scouring effect and surface for biofilm attachment. Effect of NaOCl on methane production was negligible for GAC with bi ...
DOI:
10.1016/j.scitotenv.2019.04.396

12. Trade-off designs of power-to-methane systems via solid-oxide electrolyzer and the application to biogas upgrading

Author:
Jeanmonod, Guillaume; Wang, Ligang; Diethelm, Stefan; Maréchal, François; Van herle, Jan
Source:
Applied energy 2019 v.247 pp. 572-581
ISSN:
0306-2619
Subject:
methane production,   etc   ; air; anodes; biogas; carbon dioxide; electrolysis; energy; methane; oxygen; temperature;     Show all 10 Subjects
Abstract:
... Solid-oxide electrolyzer based power-to-methane is promising for large-scale energy storage as well as biogas upgrading by efficiently converting intermittent renewable power and CO2 (e.g., in biogas) into synthetic methane. Either air or pure oxygen can be employed in solid oxide electrolyzers for anode sweeping and thermal management. This work investigates the optimal conceptual design of a var ...
DOI:
10.1016/j.apenergy.2019.04.055

13. Ethylene rather than acetylene inhibits soil methane oxidation rates in a subtropical evergreen forest

Author:
Bu, Xuelei; Krause, Sascha M.B.; Gu, Xinyun; Tian, Jianqing; Zhou, Xiaoqi
Source:
Soil biology & biochemistry 2019 v.135 pp. 10-12
ISSN:
0038-0717
Subject:
methane production,   etc   ; denitrification; ethylene; evergreen forests; forest soils; gases; methane; nitrification; oxidation;     Show all 9 Subjects
Abstract:
... Ethylene and acetylene have been widely applied as inhibitors for microbial processes such as denitrification, nitrification, methanogenesis, and methane oxidation. Here, we tested the inhibition effects of these two trace gases on methane oxidation rates in subtropical evergreen forest soils. One-week laboratory incubations showed that aerobic soil methane oxidation rates at ambient or 50 parts p ...
DOI:
10.1016/j.soilbio.2019.04.001

14. Impact of zero valent iron on blackwater anaerobic digestion

Author:
Xu, Rui; Xu, Shengnan; Zhang, Lei; Florentino, Anna Patricya; Yang, Zhaohui; Liu, Yang
Source:
Bioresource technology 2019 v.285 pp. 121351
ISSN:
0960-8524
Subject:
methane production,   etc   ; ammonia; anaerobic digestion; bioenergy; energy; iron; methane; pH; redox potential; wastewater treatment;     Show all 10 Subjects
Abstract:
... The source diverted blackwater treatment is receiving growing attention as an alternative to conventional energy intensive wastewater management and treatment systems. Blackwater, containing concentrated organic materials, can be anaerobically digested to recovery bioenergy. However, the methane recovery from blackwater is often inhibited by the presence of high free ammonia (FA) in blackwater. In ...
DOI:
10.1016/j.biortech.2019.121351

15. Removal of combined antibiotic (florfenicol, tylosin and tilmicosin) during anaerobic digestion and their relative effect

Author:
Yin, Fubin; Dong, Hongmin; Zhang, Wanqin; Zhu, Zhiping; Shang, Bin; Wang, Yi
Source:
Renewable energy 2019 v.139 pp. 895-903
ISSN:
0960-1481
Subject:
methane production,   etc   ; Clostridia; Methanomicrobia; anaerobic digestion; florfenicol; microbial communities; renewable energy sources; tylosin;     Show all 8 Subjects
Abstract:
... The relative effect between combined antibiotic and anaerobic digestion (AD) is poorly understood. This study evaluated the effect of antibiotic removal during AD and the combination of florfenicol, tylosin and tilmicosin on the performance of AD and examined the ways in which these antibiotics impact the microbial community. Results showed that at same initial concentration, the removal rates of ...
DOI:
10.1016/j.renene.2019.03.001

16. Extraction of phenolic compounds and production of biomethane from strawberry and raspberry extrudates

Author:
Trujillo-Reyes, Ángeles; Cubero-Cardoso, Juan; Rodríguez-Gutiérrez, Guillermo; García-Martín, Juan Francisco; Rodríguez-Galán, Mónica; Borja, Rafael; Serrano, Antonio; Fermoso, Fernando G.
Source:
Biochemical engineering journal 2019 v.147 pp. 11-19
ISSN:
1369-703X
Subject:
methane production,   etc   ; anaerobic digestion; bioactive compounds; biogas; biomass; biorefining; economic feasibility; gallic acid; methane; raspberries; strawberries;     Show all 11 Subjects
Abstract:
... This study proposes a biorefinery approach system to treat two berry extrudates generated by the berry-tasted products industry. The berry extrudates studied were strawberry extrudate (SE1 and SE2) and raspberry extrudate (RE), both of them processed in the same industrial plant. The proposed biorefinery approach consists in the extraction of bioactive compounds after hydrothermal pre-treatment fo ...
DOI:
10.1016/j.bej.2019.03.023

17. Mechanism of CO2-formation promotion by Au in plasma-catalytic oxidation of CH4 over Au/γ-Al2O3 at room temperature

Author:
Yao, Shuiliang; Chen, Zhizong; Weng, Shan; Mao, Linai; Zhang, Xuming; Han, Jingyi; Wu, Zuliang; Lu, Hao; Tang, Xiujuan; Jiang, Boqiong; Nozaki, Tomohiro
Source:
Journal of hazardous materials 2019 v.373 pp. 698-704
ISSN:
0304-3894
Subject:
methane production,   etc   ; ambient temperature; carbon dioxide; carbonates; catalysts; desorption; gold; greenhouse gas emissions; methane; oxidation; oxygen;     Show all 11 Subjects
Abstract:
... The plasma-catalytic oxidation of methane (CH4) is a potential reaction for controlling CH4 emissions at low temperatures. However, the mechanism of the CH4 plasma-catalytic oxidation is still unknown, which inhibits the further optimization of the oxidation process. Herein, a CH4 oxidation mechanism over an Au/γ-Al2O3 catalyst was proposed based on our experimental findings. CH4 is first decompos ...
DOI:
10.1016/j.jhazmat.2019.04.003

18. ADM1-based mechanistic model for the role of trace elements in anaerobic digestion processes

Author:
Frunzo, L.; Fermoso, F.G.; Luongo, V.; Mattei, M.R.; Esposito, G.
Source:
Journal of environmental management 2019 v.241 pp. 587-602
ISSN:
0301-4797
Subject:
methane production,   etc   ; anaerobic digestion; bioavailability; biogas; differential equation; food waste; mechanistic models; sorption; trace elements;     Show all 9 Subjects
Abstract:
... An original mechanistic model able to describe the fate of trace elements (TE) in anaerobic digestion systems has been synthetized from mass balance equations. The model takes into account the main biochemical and physico-chemical processes affecting TE bioavailability and it is aimed at evaluating the effect that the combination of such processes exerts on the system performance. Five main module ...
DOI:
10.1016/j.jenvman.2018.11.058

19. Anaerobic digestion of hydrothermally-pretreated lignocellulosic biomass: Influence of pretreatment temperatures, inhibitors and soluble organics on methane yield

Author:
Phuttaro, Chettaphong; Sawatdeenarunat, Chayanon; Surendra, K.C.; Boonsawang, Piyarat; Chaiprapat, Sumate; Khanal, Samir Kumar
Source:
Bioresource technology 2019 v.284 pp. 128-138
ISSN:
0960-8524
Subject:
methane production,   etc   ; Cenchrus purpureus; anaerobic digestion; bioenergy; biomass; feedstocks; furfural; hydrolysis; hydroxymethylfurfural; lignocellulose; models; slurries; temperature;     Show all 13 Subjects
Abstract:
... Anaerobic digestion (AD) of lignocellulosic biomass has received significant attention for bioenergy production in recent years. However, hydrolysis is a rate-limiting in AD of such feedstock. In this study, effects of hydrothermal pretreatment of Napier grass, a model lignocellulosic biomass, on methane yield were examined through series of batch and semi-continuous studies. In batch studies, the ...
DOI:
10.1016/j.biortech.2019.03.114

20. Anaerobic digestion to reduce biomass and remove arsenic from As-hyperaccumulator Pteris vittata

Author:
da Silva, Evandro B.; Mussoline, Wendy A.; Wilkie, Ann C.; Ma, Lena Q.
Source:
Environmental pollution 2019 v.250 pp. 23-28
ISSN:
0269-7491
Subject:
methane production,   etc   ; Pteris vittata; anaerobic digestion; arsenic; biomass; gases; liquids; methane; phytoremediation; solubilization;     Show all 10 Subjects
Abstract:
... The lack of efficient methods to treat As-rich biomass is a drawback for phytoremediation technology. In this study, we applied anaerobic digestion to reduce biomass and remove As from As-rich Pteris vittata biomass. P. vittata biomass including control (3.1 mg kg−1 As) and As-rich (2665 mg kg−1 As), together with positive and negative controls, was anaerobically digested at 35 °C for 35 d. Arseni ...
DOI:
10.1016/j.envpol.2019.03.117