Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion

Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion

Bibliographic Details
Main Author: Mullins, Emily Ann
Language:English
Published: Ohio University / OhioLINK 2021
Subjects:
Environmental Studies
anaerobic digestion
food waste
waste
bioenergy
diet
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1620125389516066
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou16201253895160662021-09-11T05:17:14Z Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion Mullins, Emily Ann Environmental Studies anaerobic digestion food waste waste bioenergy diet Anaerobic digestion (AD) is increasingly becoming a sustainable waste management strategy in the United States. Food waste (FW) composition varies with dietary choices and can affect the amount and quality of products from AD. Human dietary management persists as obesity rises nationally, but there is little knowledge regarding the effect of diets on FW composition, potential energy generation from different wastes, and secondary products. The objective of this research is to characterize the biogas production and digestate quality of anaerobically digested food wastes. Food wastes from four distinct diets were compared in lab-scale anaerobic digestion vessels: paleolithic, ketogenic, vegetarian, and omnivorous diets. Food was collected to mimic the proportional wastes for each diet and then digested with healthy digester effluent as an inoculum in replicated lab-scale AD vessels. Waste products were characterized by measuring biomethane yield, and the nitrogen and phosphorus nutrients found in the effluent after digestion. Results suggest that the AD of FW from the ketogenic diet would result in biogas with 317% greater methane than the reference omnivorous diet, while the digestate of the paleolithic diet contained 80% greater concentration of phosphorus. All alternative diets resulted in a digestate with lower nitrogen (-13% on average) than the omnivorous diet. 2021-09-10 English text Ohio University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1620125389516066 http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1620125389516066 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Environmental Studies
anaerobic digestion
food waste
waste
bioenergy
diet
spellingShingle Environmental Studies
anaerobic digestion
food waste
waste
bioenergy
diet
Mullins, Emily Ann
Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion
author Mullins, Emily Ann
author_facet Mullins, Emily Ann
author_sort Mullins, Emily Ann
title Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion
title_short Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion
title_full Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion
title_fullStr Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion
title_full_unstemmed Biogas Production and Digestate Quality of Diet-Influenced Food Waste after Anaerobic Digestion
title_sort biogas production and digestate quality of diet-influenced food waste after anaerobic digestion
publisher Ohio University / OhioLINK
publishDate 2021
url http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1620125389516066
work_keys_str_mv AT mullinsemilyann biogasproductionanddigestatequalityofdietinfluencedfoodwasteafteranaerobicdigestion
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