1
|
Demichelis F, Tommasi T, Deorsola FA, Marchisio D, Mancini G, Fino D. Life cycle assessment and life cycle costing of advanced anaerobic digestion of organic fraction municipal solid waste. CHEMOSPHERE 2022; 289:133058. [PMID: 34838840 DOI: 10.1016/j.chemosphere.2021.133058] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
The aim of this study is the evaluation of the environmental sustainability by means of Life Cycle Assessment (LCA) and economic profitability through Life Cycle Costing (LCC) of the 18 anaerobic digestion (AD) configurations carried out on Organic Fraction Municipal Solid Waste (OFMSW) at three Substrate Inoculum (S:I) ratios (1:2, 1:1 and 2:1) for three different inoculum incubation times (0, 5 and 10 d). The adopted approach was the eco-efficiency perspective, coming from the combination of technical, environmental (LCA) and economic (LCC) perspectives. The main findings of the study were that increasing both the S:I ratio and the inoculum incubation time (5 and 10 d) the environmental impacts decreased, and economic profitability increased. The lowest values of Climate Change were achieved by the AD performed with both inocula WAS and CAS for 10 d at S:I equal to 2:1: 28.67 and 27.72 kg CO2 eq respectively. The minimum AD plant size for which all the 18 AD configurations was economically profitable after 5 y of amortization was 30,000 t/y of OFMSW. Capital and operational costs decreased by increasing the incubation time of the inoculum and the S:I ratio, since higher specific biogas rate was reached, and smaller AD bio-reactor volume were adopted because hydraulic retention time decreased. The AD plant size, for which maximal revenues and minimal capital and operational costs were detected, was 50,000 t/y OFMSW. Among all the AD configurations, the environmental sustainability and economic profitability were reached by test perfomed with inocula WAS and CAS incubated for 5 and 10 d at the highest S:I ratio 2:1.
Collapse
Affiliation(s)
- F Demichelis
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino (TO), Italy.
| | - T Tommasi
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino (TO), Italy
| | - F A Deorsola
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino (TO), Italy
| | - D Marchisio
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino (TO), Italy
| | - G Mancini
- Department of Electric, Electronic and Informatic Engineering, Università degli Studi di Catania, Viale A. Doria 6, 95125, Catania, Italy
| | - D Fino
- Department of Applied Science and Technology (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino (TO), Italy
| |
Collapse
|
2
|
Sohal B, Ahmad Bhat S, Vig AP. Vermiremediation and comparative exploration of physicochemical, growth parameters, nutrients and heavy metals content of biomedical waste ash via ecosystem engineers Eisenia fetida. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 227:112891. [PMID: 34649139 DOI: 10.1016/j.ecoenv.2021.112891] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/23/2021] [Accepted: 10/08/2021] [Indexed: 05/24/2023]
Abstract
Vermicomposting of Biomedical waste ash (BA) by the earthworm Eisenia fetida was studied with cow dung (CD) as nutrient medium. For 105 days, experiment was carried out in seven vermireactors containing varying ratios of BA and CD. Earthworm activity significantly reduced the pH (8.61-7.24), Electrical conductivity (EC) (4.1-1.62), Total organic carbon (TOC) (38.6-14.92), and Carbon and nitrogen (C/N ratios) (145.4-8.2) of all BA ratios. Levels of Total kjeldahl nitrogen (TKN) (0.26-1.82), Total available phosphorus (TAP) (0.22-0.64), Total potassium (TK) (2.05-12.08), and Total sodium (TNa) (47.53-92.26) were found to be increasing in the postvermicompost mixture. Although heavy metals content decreased from initial to final, it becomes below the permissible limits in the end product. The results showed that earthworm growth and fecundity were best in vermireactors containing 10-25% of BA. The best reproduction and growth of earthworms, demonstrate the vermicomposting's ability to manage hazardous solid wastes like BA. Use of vermitechnology to manage BA has not been performed yet in any kind of the research. Finally, it was determined that vermicomposting can be incorporated into overall plan for BA management. Thus nutrient-rich, detoxified, and physiochemically stable product may be used safely in agricultural processes.
Collapse
Affiliation(s)
- Bhawana Sohal
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India.
| | - Sartaj Ahmad Bhat
- River Basin Research center, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Environmental Sciences, Government Degree College Anantnag, Khanabal, Jammu and Kashmir 192101, India.
| | - Adarsh Pal Vig
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India.
| |
Collapse
|
3
|
Sohal B, Singh S, Singh SIK, Bhat SA, Kaur J, Singh J, Vig AP. Comparing the nutrient changes, heavy metals, and genotoxicity assessment before and after vermicomposting of thermal fly ash using Eisenia fetida. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:48154-48170. [PMID: 33904127 DOI: 10.1007/s11356-021-13726-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Fly ash (FA) is available in an unstable state and can be ameliorated by vermicomposting. The different ratios of FA viz (FA10, FA15, FA20, FA25, FA50, FA75) were mixed with another organic waste, i.e., cattle dung. Supportive effects of FA were seen on the reproductive parameters of the earthworms up to FA25. Some beneficial changes have been reported in pH, EC, TOC, TKN, TAP, TNa, TK, and potentially toxic heavy metals (Zn, Cu, Cd, Co, Ni, Cr, Pb). The genotoxicity test was performed to assess the toxic effects of the fly ash which has not been done till now. Low genotoxicity potential and high onion root growth were observed in the post-vermicompost samples which were not even reported yet by any other study. These results clearly indicated that the vermicomposting process offers the best option to manage the FA by converting it into an ecofriendly, nutrient-rich, and properly detoxified manure with the help of earthworms which also indicate its economically best-fit applications for the large scale agricultural practices.
Collapse
Affiliation(s)
- Bhawana Sohal
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Sharanpreet Singh
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | | | | | - Jagdeep Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Jaswinder Singh
- Department of Zoology, Khalsa College, Amritsar, Punjab, India
| | - Adarsh Pal Vig
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India.
| |
Collapse
|
4
|
Design of a Centralized Bioenergy Unit at Comarca Lagunera, Mexico: Modeling Strategy to Optimize Bioenergy Production and Reduce Methane Emissions. Processes (Basel) 2021. [DOI: 10.3390/pr9081350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A centralized bioenergy unit was simulated, focusing on optimizing the manure transport chain, installing a centralized biogas plant, operation costs of the process, biogas upgrading, organic fertilizer production, and economic analyses. Comarca Lagunera from northeast Mexico was chosen as a study zone due to the existing number of dairy farms and livestock population (64,000 cattle heads). Two scenarios were analyzed: The first centralized scenario consisted of selecting one unique location for the anaerobic digesters for the 16 farms; the second decentralized scenario consisted of distributing the anaerobic digesters in three locations. Optimal locations were determined using mathematical modeling. The bioenergy unit was designed to process 1600 t/day of dairy manure. Results indicated that biomethane production was a more profitable option than generating electricity with non-purified methane. The amount of biomethane production was 58,756 m3/day. Economic analysis for centralized bioenergy unit scenario showed a net production cost of USD $0.80 per kg of biomethane with a profit margin of 14.4% within 10.7 years. The decentralized bioenergy unit scenario showed a net production cost of USD $0.80 per kg of biomethane with a profit of 12.9% within 11.4 years. This study demonstrated the techno-economical and environmental feasibility for centralized and decentralized bioenergy units.
Collapse
|
5
|
Li Y, Qi C, Zhang Y, Li Y, Wang Y, Li G, Luo W. Anaerobic digestion of agricultural wastes from liquid to solid state: Performance and environ-economic comparison. BIORESOURCE TECHNOLOGY 2021; 332:125080. [PMID: 33865011 DOI: 10.1016/j.biortech.2021.125080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Performance and environ-economic impacts were compared for anaerobic digestion (AD) of dairy manure and cucumber residues from liquid to solid state. Environ-economic evaluation of the overall AD process at different total solids (TS) was performed with the estimated treatment capacity of 9600 tons/year and service life of 20 years. Results showed that TS increase from 6% to 22% enhanced both cumulative and volumetric methane (CH4) production. Further TS increase to 25%, however, reduced CH4 yield. Environ-economic assessment indicated that TS increase enhanced volumetric waste treatment capacity and thus AD environmental footprints. Environmental credits from digestate and biogas utilization could compensate the adverse environmental impacts of other processes in AD plants. Furthermore, biogas and nutrients in digestate determined AD net-present value. As a result, solid state AD was more profitable with higher CH4 yield and more nutrients in both biosolids and digested effluent of digestate than its liquid and hemi-solid counterparts.
Collapse
Affiliation(s)
- Yangyang Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100093, China
| | - Chuanren Qi
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100093, China
| | - Yiran Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100093, China
| | - Yanming Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100093, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, 215128 Jiangsu Province, China
| | - Yanqin Wang
- College of Resource and Environmental Science, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Guoxue Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100093, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, 215128 Jiangsu Province, China
| | - Wenhai Luo
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100093, China; Organic Recycling Institute (Suzhou) of China Agricultural University, Wuzhong District, 215128 Jiangsu Province, China.
| |
Collapse
|
6
|
Li Y, Han Y, Zhang Y, Luo W, Li G. Anaerobic digestion of different agricultural wastes: A techno-economic assessment. BIORESOURCE TECHNOLOGY 2020; 315:123836. [PMID: 32707503 DOI: 10.1016/j.biortech.2020.123836] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 06/11/2023]
Abstract
In this work, techno-economic evaluation of anaerobic digestion (AD) system (8000 metric tons (MT)/year) with singular (dairy manure), binary (dairy manure and corn stalk), and ternary mixture (dairy manure, corn stalk, and tomato residues) under bio-methane and combined heat and power (CHP) pathways based on a plant service life of 20 years were carried out. Solid state-AD (SS-AD) of ternary mixture improved the efficiency of investment, benefited the digestate price, and was shown to be economic viability. The introduction of a CHP unit highly improved the economics of SS-AD. SS-AD of the binary mixture under CHP pathway was able to compensate the initial required investment, however was not financially attractive under bio-methane pathway. Besides, SS-AD of the ternary mixture under CHP pathway had higher net present value (NPV) ($0.60 million vs $0.40 million) and internal rate of return (IRR) (23% vs 20%) than that under bio-methane pathway.
Collapse
Affiliation(s)
- Yangyang Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yiyu Han
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yiran Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Wenhai Luo
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Guoxue Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
7
|
Wang Y, Zhang J, Li Y, Jia S, Song Y, Sun Y, Zheng Z, Yu J, Cui Z, Han Y, Hao J, Li G. Methane production from the co-digestion of pig manure and corn stover with the addition of cucumber residue: Role of the total solids content and feedstock-to-inoculum ratio. BIORESOURCE TECHNOLOGY 2020; 306:123172. [PMID: 32197196 DOI: 10.1016/j.biortech.2020.123172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
This study investigated performance and stability of increasing total solids (TS) content (10-30%) and feedstock-to-inoculum (F/I) ratios (1, 2) on anaerobic co-digestion of agricultural wastes. The cumulative methane yields generally decreased with the increasing TS content except for the TS content of 30% at F/I ratio of 1 and TS content of 10% at F/I ratio of 2. This was consistent with the maximum methane production rate (Rmax) and rate of the hydrolysis (Kh) stage in reactors. The pH, VFAs and NH4+-N content were positively correlated with increasing TS contents and F/I ratios. Economic analysis results indicated the net present value generally increased with increasing TS contents and TS content of 30% at F/I ratio of 1 had the highest net present value (5.7 million US$) and internal rate of return (41.9%). This indicated solid-state anaerobic digestion was financially attractive under analyzed conditions.
Collapse
Affiliation(s)
- Yaya Wang
- College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding, Hebei 071000, China; Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China
| | - Jiaxing Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yangyang Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Shufei Jia
- College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Yang Song
- College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Yanbo Sun
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Zehui Zheng
- College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China
| | - Jiadong Yu
- College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China
| | - Zongjun Cui
- College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China
| | - Yiyu Han
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Jianjun Hao
- College of Mechanical and Electrical Engineering, Hebei Agricultural University, Baoding, Hebei 071000, China
| | - Guoxue Li
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
8
|
Yoshizawa N, Usui M, Fukuda A, Asai T, Higuchi H, Okamoto E, Seki K, Takada H, Tamura Y. Manure Compost Is a Potential Source of Tetracycline-Resistant Escherichia coli and Tetracycline Resistance Genes in Japanese Farms. Antibiotics (Basel) 2020; 9:antibiotics9020076. [PMID: 32054107 PMCID: PMC7168215 DOI: 10.3390/antibiotics9020076] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 12/13/2022] Open
Abstract
Manure compost has been thought of as a potential important route of transmission of antimicrobial-resistant bacteria (ARB) and antimicrobial resistance genes (ARGs) from livestock to humans. To clarify the abundance of ARB and ARGs, ARB and ARGs were quantitatively determined in tetracycline-resistant Escherichia coli (harboring the tetA gene)-spiked feces in simulated composts. In the simulated composts, the concentration of spiked E. coli decreased below the detection limit at day 7. The tetA gene remained in manure compost for 20 days, although the levels of the gene decreased. Next, to clarify the field conditions of manure compost in Japan, the quantities of tetracycline-resistant bacteria, tetracycline resistance genes, and residual tetracyclines were determined using field-manure-matured composts in livestock farms. Tetracycline-resistant bacteria were detected in 54.5% of tested matured compost (6/11 farms). The copy number of the tetA gene and the concentrations of residual tetracyclines in field manure compost were significantly correlated. These results suggest that the use of antimicrobials in livestock constitutes a selective pressure, not only in livestock feces but also in manure compost. The appropriate use of antimicrobials in livestock and treatment of manure compost are important for avoiding the spread of ARB and ARGs.
Collapse
Affiliation(s)
- Nobuki Yoshizawa
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu 069-8501, Japan; (N.Y.); (A.F.); (Y.T.)
| | - Masaru Usui
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu 069-8501, Japan; (N.Y.); (A.F.); (Y.T.)
- Correspondence: ; Tel.: +81-11-388-4723
| | - Akira Fukuda
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu 069-8501, Japan; (N.Y.); (A.F.); (Y.T.)
- Microbiology Section, Osaka Institute of Public Health, Osaka 543-0026, Japan
| | - Tetsuo Asai
- Department of Applied Veterinary Science, The United Graduated School of Veterinary Science, Gifu University, Yanagido 501-1193, Japan;
| | - Hidetoshi Higuchi
- Laboratory of Veterinary Hygiene, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu 069-8501, Japan;
| | - Eiryu Okamoto
- Laboratory of Environmental Microbiology, College of Agriculture, Food and Environment Sciences, Rakuno Gakuen University, Ebetsu 069-8501, Japan;
| | - Kanako Seki
- Laboratory of Organic Geochemistry, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan; (K.S.); (H.T.)
| | - Hideshige Takada
- Laboratory of Organic Geochemistry, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan; (K.S.); (H.T.)
| | - Yutaka Tamura
- Laboratory of Food Microbiology and Food Safety, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu 069-8501, Japan; (N.Y.); (A.F.); (Y.T.)
| |
Collapse
|
9
|
Awasthi MK, Sarsaiya S, Wainaina S, Rajendran K, Kumar S, Quan W, Duan Y, Awasthi SK, Chen H, Pandey A, Zhang Z, Jain A, Taherzadeh MJ. A critical review of organic manure biorefinery models toward sustainable circular bioeconomy: Technological challenges, advancements, innovations, and future perspectives. RENEWABLE AND SUSTAINABLE ENERGY REVIEWS 2019; 111:115-131. [DOI: 10.1016/j.rser.2019.05.017] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
|
10
|
Abstract
A large volume of food is being wasted every year, while the pulp and paper industry also generate a large amount of solid wastes on a daily basis, causing environmental challenges around the world. Dry anaerobic digestion (AD) of these solid wastes is a cost-effective method for proper management. However, dry digestion of these waste streams has been restricted due to their complex structure, the presence of possible inhibitors and inappropriate operating conditions. In light of this fact, dry digestion of food waste (FW) and paper wastes (PW) was conducted at different total solid (TS) concentrations of reactor mixtures of 14%, 16%, 18% and 20% TS, corresponding to substrate to inoculum (S/I) ratio of 0.5 and 1; investigating the optimum operating conditions for effective dry digestion of these complex wastes. The highest methane yields of 402 NmlCH4/gVS and 229 NmlCH4/gVS were obtained from digestion of FW and PW, respectively at 14%TS corresponding to an S/I ratio of 0.5. Increasing the S/I ratio from 0.5 to 1 and thereby having a TS content of 20% in the reactor mixtures was unfavorable to the digestion of both substrates.
Collapse
|
11
|
Li Y, Lu J, Xu F, Li Y, Li D, Wang G, Li S, Zhang H, Wu Y, Shah A, Li G. Reactor performance and economic evaluation of anaerobic co-digestion of dairy manure with corn stover and tomato residues under liquid, hemi-solid, and solid state conditions. BIORESOURCE TECHNOLOGY 2018; 270:103-112. [PMID: 30212770 DOI: 10.1016/j.biortech.2018.08.061] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/14/2018] [Accepted: 08/16/2018] [Indexed: 06/08/2023]
Abstract
Anaerobic co-digestion of tomato residues, dairy manure, and corn stover at ratios of 20:48:32, 40:36:24, and 60:24:16 (volatile solid basis) were compared for liquid anaerobic digestion (L-AD), hemi-solid state AD (HSS-AD), and solid state AD (SS-AD) systems. The highest methane yield (353.5 L/kg-VSadded) and volumetric methane productivity (24.5 m3methane/m3reactor volume) were both obtained with 20% tomato residues addition under L-AD and HSS-AD conditions, respectively. Total solid and feedstock mixing ratio affected the degradation of protein and lipids during AD, but not cellulose and hemicellulose. Economic analysis results indicated that capital and labor costs have the dominant effect on total investment. SS-AD of tomato residues, dairy manure, and corn stover at ratios of 20:48:32 (VS basis) has the highest net present value (2.6 million US$) and shortest payback period (10.1 year), which indicated SS-AD was financially attractive under analysis conditions.
Collapse
Affiliation(s)
- Yangyang Li
- Beijing Key Laboratory of Farmland Pollution Prevention-control and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Jiaxin Lu
- Beijing Key Laboratory of Farmland Pollution Prevention-control and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Fuqing Xu
- Department of Food, Agricultural, and Biological Engineering, The Ohio State University, 44691, USA
| | - Yu Li
- Beijing Key Laboratory of Farmland Pollution Prevention-control and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Danyang Li
- Beijing Key Laboratory of Farmland Pollution Prevention-control and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Guoying Wang
- Beijing Key Laboratory of Farmland Pollution Prevention-control and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Shuyan Li
- Beijing Key Laboratory of Farmland Pollution Prevention-control and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China
| | - Hongyu Zhang
- Beijing Building Materials Academy of Science Research/State Key Laboratory of Solid Waste Reuse for Building Material, Beijing 100041, China
| | - Yue Wu
- Department of Mechanical Engineering, Marquette University, 53233, USA
| | - Ajay Shah
- Department of Food, Agricultural, and Biological Engineering, The Ohio State University, 44691, USA
| | - Guoxue Li
- Beijing Key Laboratory of Farmland Pollution Prevention-control and Remediation, College of Resource and Environmental Science, China Agricultural University, Beijing 100193, China.
| |
Collapse
|