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A Comprehensive Evaluation of Biomas...

Kim, Joonrae Roger.

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A Comprehensive Evaluation of Biomass Pretreatments for Enhanced Methane Production during Anaerobic Digestion of Dairy Manure.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Comprehensive Evaluation of Biomass Pretreatments for Enhanced Methane Production during Anaerobic Digestion of Dairy Manure./
作者:	Kim, Joonrae Roger.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	125 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-01, Section: B.
Contained By:	Dissertations Abstracts International83-01B.
標題:	Environmental engineering. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28413343
ISBN:	9798516923210

A Comprehensive Evaluation of Biomass Pretreatments for Enhanced Methane Production during Anaerobic Digestion of Dairy Manure.
Kim, Joonrae Roger.

A Comprehensive Evaluation of Biomass Pretreatments for Enhanced Methane Production during Anaerobic Digestion of Dairy Manure. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 125 p.

Source: Dissertations Abstracts International, Volume: 83-01, Section: B.

Thesis (Ph.D.)--The University of Wisconsin - Madison, 2021.

This item must not be sold to any third party vendors.

Anaerobic digestion was tested on dairy manure substrates to determine the effectiveness of four different pretreatment methods: (a) acid, (b) alkaline, (c) sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL), and (d) alkaline hydrogen peroxide (AHP). For each pretreatment method, two chemical dosages were evaluated (termed moderate and severe conditions). Effective pretreatments allowed solubilization of carbohydrates within the manure fiber matrix. Raw dairy manure generated 141 mL-CH4/g-VS without pretreatment. Under moderate pretreatment, SPORL pretreatment produced the highest CH4 yield (353 mL/g-VS) followed by alkaline, acid, and AHP pretreatments with 311, 264, and 261 mL/g-VS, respectively. Severe-alkaline and severe-AHP pretreatments resulted in higher CH4 yield (356 and 333 mL/g-VS, respectively) relative to moderate conditions. While severe-SPORL pretreatment generated more CH4 (233 mL/g-VS) than untreated dairy manure, it was lower than that of moderate-SPORL. Severe-acid pretreatment showed early termination in biogas production, and to determine the underlying mechanisms the inhibitory effects of furfural and 5-hydroxymethyl furfural (HMF) were investigated. Experimental data and kinetic modeling indicated that severe-acid pretreatment caused degradation of carbohydrates to furfural, reducing biogas production due to direct toxicity rather than competitive inhibition effects. A techno-economic analysis was conducted by estimating the corresponding mass and energy balance using a combination of experimental and simulation data. Three biogas utilization scenarios (electricity, biomethane, liquefied biomethane) and four different dairy farm sizes (with 1,000, 2,500, 5,000, and 10,000 animal units (AUs)) were considered to determine the breakeven price of each biogas-derived product at which the technology becomes economically feasible. The breakeven prices for all three end-products were higher than the corresponding current market prices. Selling biogas as electricity appeared to be the most economical option with the least difference from the market value. Among the pretreatment options, moderate-acid pretreatment was more economical for larger facilities (≥ 5,000 AUs), whereas severe-alkaline pretreatment had greater feasibility for smaller dairy farms (≤ 2,500 AUs). When a supply chain optimization framework was used to address logistical issues in the Upper Yahara Watershed of Wisconsin, severe-alkaline pretreatment was the most economical pretreatment option due to the highly distributed nature of manure production and associated handling costs.

ISBN: 9798516923210Subjects--Topical Terms:

548583
Environmental engineering.
Subjects--Index Terms:

Biomass pretreatments

A Comprehensive Evaluation of Biomass Pretreatments for Enhanced Methane Production during Anaerobic Digestion of Dairy Manure.
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300 $a 125 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-01, Section: B.
500 $a Advisor: Karthikeyan, Krishnapuram G.
502 $a Thesis (Ph.D.)--The University of Wisconsin - Madison, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Anaerobic digestion was tested on dairy manure substrates to determine the effectiveness of four different pretreatment methods: (a) acid, (b) alkaline, (c) sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL), and (d) alkaline hydrogen peroxide (AHP). For each pretreatment method, two chemical dosages were evaluated (termed moderate and severe conditions). Effective pretreatments allowed solubilization of carbohydrates within the manure fiber matrix. Raw dairy manure generated 141 mL-CH4/g-VS without pretreatment. Under moderate pretreatment, SPORL pretreatment produced the highest CH4 yield (353 mL/g-VS) followed by alkaline, acid, and AHP pretreatments with 311, 264, and 261 mL/g-VS, respectively. Severe-alkaline and severe-AHP pretreatments resulted in higher CH4 yield (356 and 333 mL/g-VS, respectively) relative to moderate conditions. While severe-SPORL pretreatment generated more CH4 (233 mL/g-VS) than untreated dairy manure, it was lower than that of moderate-SPORL. Severe-acid pretreatment showed early termination in biogas production, and to determine the underlying mechanisms the inhibitory effects of furfural and 5-hydroxymethyl furfural (HMF) were investigated. Experimental data and kinetic modeling indicated that severe-acid pretreatment caused degradation of carbohydrates to furfural, reducing biogas production due to direct toxicity rather than competitive inhibition effects. A techno-economic analysis was conducted by estimating the corresponding mass and energy balance using a combination of experimental and simulation data. Three biogas utilization scenarios (electricity, biomethane, liquefied biomethane) and four different dairy farm sizes (with 1,000, 2,500, 5,000, and 10,000 animal units (AUs)) were considered to determine the breakeven price of each biogas-derived product at which the technology becomes economically feasible. The breakeven prices for all three end-products were higher than the corresponding current market prices. Selling biogas as electricity appeared to be the most economical option with the least difference from the market value. Among the pretreatment options, moderate-acid pretreatment was more economical for larger facilities (≥ 5,000 AUs), whereas severe-alkaline pretreatment had greater feasibility for smaller dairy farms (≤ 2,500 AUs). When a supply chain optimization framework was used to address logistical issues in the Upper Yahara Watershed of Wisconsin, severe-alkaline pretreatment was the most economical pretreatment option due to the highly distributed nature of manure production and associated handling costs.
590 $a School code: 0262.
650 4 $a Environmental engineering. $3 548583
650 4 $a Agricultural engineering. $3 3168406
653 $a Biomass pretreatments
653 $a Enhanced methane production
653 $a Anaerobic digestion
653 $a Dairy manure
690 $a 0539
690 $a 0775
710 2 $a The University of Wisconsin - Madison. $b Biological Systems Engineering. $3 2049925
773 0 $t Dissertations Abstracts International $g 83-01B.
790 $a 0262
791 $a Ph.D.
792 $a 2021
793 $a English
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