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1. Nutrient recovery from pig manure digestate using electrodialysis reversal: Membrane fouling and feasibility of long-term operation

Author:
Xie, Sihuang,   et al.   ; Shi, Lin; Hu, Zhenhu; Wu, Guangxue; Morrison, Liam; Croot, Peter; Hu, Hongying; Zhan, Xinmin;     Show all 8 Authors
Source:
Journal of membrane science 2019 v.573 pp. 560-569
ISSN:
0376-7388
Subject:
acidification; ammonium; anion-exchange membranes; centrifugation; cleaning; electrodialysis; fouling; hydrochloric acid; inorganic matter; ion exchange capacity; liquids; phosphates; phosphorus; pig manure; turbidity
Abstract:
... Membrane technologies are challenged by severe membrane fouling when treating animal manure digestate due to high turbidity and high concentrations of organic and inorganic matter. In this study, a bench-scale electrodialysis reversal (EDR) was carried out to assess its feasibility for nutrient recovery from pig manure digestate. Pretreatment consisted of acidification for releasing phosphorus to ...
DOI:
10.1016/j.memsci.2018.12.037

2. Pilot scale evaluation of a model to distinguish the rates of simultaneous anaerobic digestion, composting and methane oxidation in static waste beds

Author:
Xie, Sihuang,   et al.   ; Rafiee, Reza; Obersky, Lizanne; Clarke, William P.;     Show all 4 Authors
Source:
Waste management 2018 v.71 pp. 156-163
ISSN:
0956-053X
Subject:
anaerobic digestion; carbon dioxide; chemical oxygen demand; composting; methane; models; municipal solid waste; oxidation; oxygen; soil
Abstract:
... The aim of this paper was to apply and validate a model for measuring the rate and extent of anaerobic digestion, composting and CH4 oxidation in laboratory scale beds. Degradation studies were performed in four reactors each packed with shredded unsorted municipal solid waste, with one bed covered with a 100 mm layer of soil. The rates of production of CH4, CO2, ¹³C-CO2 and the rate of consumptio ...
DOI:
10.1016/j.wasman.2017.11.003

3. Synergistic effect from anaerobic co-digestion of sewage sludge and organic wastes

Author:
Xie, Sihuang,   et al.   ; Wickham, Richard; Nghiem, Long D.;     Show all 3 Authors
Source:
International biodeterioration & biodegradation 2017 v.116 pp. 191-197
ISSN:
0964-8305
Subject:
ammonium nitrogen; anaerobic digestion; biodegradability; biogas; chemical oxygen demand; food waste; methane production; models; pH; paper pulp; pulp and paper sludge; sewage sludge; synergism; volatile fatty acids
Abstract:
... Anaerobic mono-digestion and co-digestion of primary sludge and two organic wastes (namely food waste or paper pulp reject) were evaluated by biomethane potential assessment and kinetics modelling to elucidate the synergistic effect. The specific methane yields were 159, 652 and 157 mL/g VS added during mono-digestion of primary sludge, food waste and paper pulp reject, respectively. Co-digestion ...
DOI:
10.1016/j.ibiod.2016.10.037

4. Anaerobic digestion of soft drink beverage waste and sewage sludge

Author:
Xie, Sihuang,   et al.   ; Wickham, Richard; Galway, Brendan; Bustamante, Heriberto; Nghiem, Long D.;     Show all 5 Authors
Source:
Bioresource technology 2018 v.262 pp. 141-147
ISSN:
0960-8524
Subject:
anaerobic digestion; biogas; biosolids; carbon; chemical oxygen demand; gas production (biological); nutrients; odors; sewage sludge; soft drinks
Abstract:
... Soft drink beverage waste (BW) was evaluated as a potential substrate for anaerobic co-digestion with sewage sludge to increase biogas production. Results from this study show that the increase in biogas production is proportional to the increase in organic loading rate (OLR) rate due to BW addition. The OLR increase of 86 and 171% corresponding to 10 and 20% BW by volume in the feed resulted in 8 ...
DOI:
10.1016/j.biortech.2018.04.046

5. Enrichment and characterization of autotrophic Thiobacillus denitrifiers from anaerobic sludge for nitrate removal

Author:
Xie, Sihuang,   et al.   ; Yang, Yan; Gerrity, Sean; Collins, Gavin; Chen, Tianhu; Li, Ruihua; Zhan, Xinmin;     Show all 7 Authors
Source:
Process biochemistry 2018 v.68 pp. 165-170
ISSN:
1359-5113
Subject:
Thiobacillus; anaerobic conditions; biofilters; cost effectiveness; denitrification; denitrifying microorganisms; enrichment culture; genes; microbial communities; municipal wastewater; nitrate nitrogen; nitrate reduction; nitrates; nitrogen; phosphorus; restriction fragment length polymorphism; ribosomal RNA; sludge; thiosulfates; wastewater treatment
Abstract:
... An efficient and cost-effective method was established to enrich sulfur-based autotrophic denitrifiers from anaerobic sludge from a municipal wastewater treatment plant. Successful enrichment was achieved using thiosulfate as a substrate after 28 days at 30 °C under anaerobic conditions. Terminal restriction fragment length polymorphism (TRFLP) and high-throughput Illumina sequencing of 16S rRNA g ...
DOI:
10.1016/j.procbio.2018.02.017

6. Relationship between the synergistic/antagonistic effect of anaerobic co-digestion and organic loading

Author:
Xie, Sihuang,   et al.   ; Xie, Tian; Sivakumar, Muttucumaru; Nghiem, Long D.;     Show all 4 Authors
Source:
International biodeterioration & biodegradation 2017 v.124 pp. 155-161
ISSN:
0964-8305
Subject:
anaerobic digestion; biogas; chemical oxygen demand; food waste; hydrolysis; methane; methane production; sewage sludge
Abstract:
... Results from this study reveal a notable relationship between the synergistic/antagonistic performance of sewage sludge – food waste anaerobic co-digestion (AcoD) and organic loading. At the same sewage sludge content, biomethane potential assays show an increasing specific methane yield as the content of food waste increased to the optimum organic loading of 15 kg VS/m³. Under these conditions, t ...
DOI:
10.1016/j.ibiod.2017.03.025

7. A mass balance model to estimate the rate of composting, methane oxidation and anaerobic digestion in soil covers and shallow waste layers

Author:
Xie, Sihuang,   et al.   ; Rafiee, Reza; Obersky, Lizanne; Clarke, William P.;     Show all 4 Authors
Source:
Waste management 2017 v.63 pp. 196-202
ISSN:
0956-053X
Subject:
anaerobic digestion; biogas; bottles; carbon dioxide; composting; equations; food waste; granules; graphene; landfills; methane; methanotrophs; models; oxidation; oxygen; soil; stable isotopes; stoichiometry
Abstract:
... Although CH4 oxidation in landfill soil covers is widely studied, the extent of composting and CH4 oxidation in underlying waste layers has been speculated but not measured. The objective of this study was to develop and validate a mass balance model to estimate the simultaneous rates of anaerobic digestion (rAD), CH4 oxidation (rOX) and composting (rCOM) in environments where O2 penetration is va ...
DOI:
10.1016/j.wasman.2016.12.025

8. Rapid digestion of shredded MSW by sequentially flooding and draining small landfill cells

Author:
Xie, Sihuang,   et al.   ; Clarke, William P.; Patel, Miheka;     Show all 3 Authors
Source:
Waste management 2016 v.55 pp. 12-21
ISSN:
0956-053X
Subject:
biogas; inventories; landfill leachates; landfills; methane; methane production; municipal solid waste; polyethylene
Abstract:
... This paper compares the digestion of a packed bed of shredded municipal waste using a flood and drain regime against a control digestion of similarly prepared material using a trickle flow regime. All trials were performed on shallow (2m) beds of the sub-8cm fraction of shredded mixed MSW, encapsulated in a polyethylene bladder. The control cell (Cell 1) was loaded with 1974 tonnes shredded munici ...
DOI:
10.1016/j.wasman.2015.11.050

9. Effects of carbon source on methanogenic activities and pathways incorporating metagenomic analysis of microbial community

Author:
Xie, Sihuang,   et al.   ; Xing, Lizhen; Yang, Shuo; Yin, Qidong; Strong, Peter James; Wu, Guangxue;     Show all 6 Authors
Source:
Bioresource technology 2017 v.244 pp. 982-988
ISSN:
0960-8524
Subject:
Geobacter; Methanobacterium; Methanosarcina; acetates; acidification; carbon; community structure; electron transfer; ethanol; fimbriae; genes; glucose; metagenomics; methane; methane production; methanogens; microbial communities; propionic acid; tryptones; volatile fatty acids
Abstract:
... In this study, the effects of four types of organic compounds (tryptone, acetate/propionate, glucose and ethanol) on methanogenesis, electron transfer processes and microbial community structure were examined. When tryptone and acetate/propionate were used, the dominant methanogenic pathway was aceticlastic methanogenesis and Methanosarcina was the most abundant methanogen. When glucose or ethanol ...
DOI:
10.1016/j.biortech.2017.08.065

10. A pilot scale study on synergistic effects of co-digestion of pig manure and grass silage

Author:
Xie, Sihuang,   et al.   ; Lawlor, Peadar G.; Frost, Peter; Dennehy, Conor D.; Hu, Zhenhu; Zhan, Xinmin;     Show all 6 Authors
Source:
International biodeterioration & biodegradation 2017 v.123 pp. 244-250
ISSN:
0964-8305
Subject:
ammonia; anaerobic digestion; biogas; chemical oxygen demand; grass silage; methane production; pH; pig manure; synergism
Abstract:
... This study aimed to assess the system stability and synergistic effects of co-digesting pig manure (PM) and grass silage (GS) in a pilot-scale study. Anaerobic digestion of PM alone and co-digestion of PM with GS was carried out in a 480-L continuously stirred tank reactor. The experiment consisted of two phases. In Phase I, PM was digested at an organic loading rate (OLR) of 0.87 kg volatile soli ...
DOI:
10.1016/j.ibiod.2017.07.005

11. The fate of trace organic contaminants during anaerobic digestion of primary sludge: A pilot scale study

Author:
Xie, Sihuang,   et al.   ; Phan, Hop V.; Wickham, Richard; McDonald, James A.; Khan, Stuart J.; Ngo, Hao H.; Guo, Wenshan; Nghiem, Long D.;     Show all 8 Authors
Source:
Bioresource technology 2018 v.256 pp. 384-390
ISSN:
0960-8524
Subject:
anaerobic conditions; anaerobic digesters; anaerobic digestion; biodegradation; biotransformation; hydrophobicity; methane; methane production; moieties; sludge; sorption
Abstract:
... A pilot-scale study was conducted to investigate the fate of trace organic contaminants (TrOCs) during anaerobic digestion of primary sludge. Of the 44 TrOCs monitored, 24 were detected in all primary sludge samples. Phase distribution of TrOCs was correlated well with their hydrophobicity (>67% mass in the solid phase when LogD > 1.5). The pilot-scale anaerobic digester achieved a steady performa ...
DOI:
10.1016/j.biortech.2018.02.040

12. Greenhouse gas emissions from different pig manure management techniques: a critical analysis

Author:
Xie, Sihuang,   et al.   ; Dennehy, Conor; Lawlor, Peadar G.; Jiang, Yan; Gardiner, Gillian E.; Nghiem, Long D.; Zhan, Xinmin;     Show all 7 Authors
Source:
Frontiers of environmental science & engineering 2017 v.11 no.3 pp. 11
ISSN:
2095-2201
Subject:
anaerobic digestion; composting; greenhouse gas emissions; greenhouse gases; land application; life cycle assessment; livestock and meat industry; livestock production; manure storage; methane; nitrous oxide; pig manure; straw; swine; wastewater treatment
Abstract:
... Manure management is the primary source of greenhouse gas (GHG) emissions from pig farming, which in turn accounts for 18% of the total global GHG emissions from the livestock industry. In this review, GHG emissions (N₂O and CH₄ emissions in particular) from individual pig manure (PGM) management practices (European practises in particular) are systematically analyzed and discussed. These manure m ...
DOI:
10.1007/s11783-017-0942-6

13. Anaerobic co-digestion: A critical review of mathematical modelling for performance optimization

Author:
Xie, Sihuang,   et al.   ; Hai, Faisal I.; Zhan, Xinmin; Guo, Wenshan; Ngo, Hao H.; Price, William E.; Nghiem, Long D.;     Show all 7 Authors
Source:
Bioresource technology 2016 v.222 pp. 498-512
ISSN:
0960-8524
Subject:
ammonia; anaerobic digestion; biochemical pathways; biogas; biosolids; mechanistic models; nitrogen; organic acids and salts; organic wastes; pH; phosphorus; sulfur
Abstract:
... Anaerobic co-digestion (AcoD) is a pragmatic approach to simultaneously manage organic wastes and produce renewable energy. This review demonstrates the need for improving AcoD modelling capacities to simulate the complex physicochemical and biochemical processes. Compared to mono-digestion, AcoD is more susceptible to process instability, as it operates at a higher organic loading and significant ...
DOI:
10.1016/j.biortech.2016.10.015

14. Economic analyses of pig manure treatment options in Ireland

Author:
Xie, Sihuang,   et al.   ; Nolan, Tereza; Troy, Shane M.; Gilkinson, Stephen; Frost, Peter; Zhan, Xinmin; Harrington, Caolan; Healy, Mark G.; Lawlor, Peadar G.;     Show all 9 Authors
Source:
Bioresource technology 2012 v.105 pp. 15-23
ISSN:
0960-8524
Subject:
anaerobic digestion; composting; constructed wetlands; cost analysis; farms; grass silage; manure spreading; pig manure; swine; tariffs; Ireland
Abstract:
... An economic analysis was performed on treatment options for pig manure in Ireland. Costs were based on a 500sow integrated pig farm producing 10,500m³ of manure per year at 4.8% dry matter. The anaerobic digestion of pig manure and grass silage (1:1; volatile solids basis) was unviable under the proposed tariffs, with costs at € 5.2m⁻³ manure. Subsequent solid–liquid separation of the digestate wo ...
DOI:
10.1016/j.biortech.2011.11.043
PubMed:
22178488