Anaerobic digestion of dairy manure using the microwave hydrogen peroxide advanced oxidation process
department or school: Applied Science, Faculty of
department or school: Civil Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Chan, Ian Ching Yuen
issued: 2013-08-20T21:36:45Z
issued: 2013
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: Anaerobic digestion (AD) of dairy manure is an alternative to traditional manure management using land application. There are many benefits of AD but it is currently not an economically viable option in many parts of North America. The focus of this investigation was to determine whether liquid dairy manure treated by microwave hydrogen peroxide advanced oxidation process (MW/H₂O₂-AOP) would increase the anaerobic biodegradability of the substrate, producing higher methane yields. Biochemical methane potential (BMP) tests were conducted to measure biogas generation and the Modified Gompertz equation was used to determine the kinetics of anaerobic biodegradability. The research found that MW/H₂O₂-AOP was effective in solubilizing nutrients and organics in liquid dairy manure, but it does not necessarily translate into enhanced anaerobic biodegradability. The BMP tests revealed that digestion of untreated dairy manure at 35ºC had the highest methane yields. Severe inhibition was observed for the digestion of acidified dairy manure. This was attributed to sulfide inhibition. In addition, ammonia concentrations were suspected as the main reason for severe inhibition of microwave treated dairy manure with no acid addition, but a number of other factors could also be responsible, including sulfide, light metals and lack of temperature acclimation for inoculum. Pretreatment of sewage sludge and BMP tests were also conducted to compare the effect of MW/H₂O₂-AOP with dairy manure. The results showed that the microwave treatment had a positive impact on anaerobic digestibility of sewage sludge, especially for mesophilic digestion. At 35ᵒC, MW alone generated the highest methane yields followed by MW/H₂O₂ and then the control. In terms of methane yield, microwave treatment improved the methane production rate for mesophilic digestion, but not thermophilic digestion. The positive results for BMP tests of microwave treated sewage sludge suggest that the influence of microwave tr…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/44854
note: ANAEROBIC DIGESTION OF DAIRY MANURE USING THE MICROWAVE HYDROGEN PEROXIDE ADVANCED OXIDATION PROCESS by IAN CHING YUEN CHAN B.A.Sc., The University of British Columbia, 2013 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Civil Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) August 2013 ? Ian Ching Yuen Chan, 2013 ii Abstract Anaerobic digestion (AD) of dairy manure is an alternative to traditional manure management using land application. There are many benefits of AD but it is currently not an economically viable option in many parts of North America. The focus of this investigation was to determine whether liquid dairy manure treated by microwave hydrogen peroxide advanced oxidation process (MW/H2O2-AOP) would increase the anaerobic biodegradability of the substrate, producing higher methane yields. Biochemical methane potential (BMP) tests were conducted to measure biogas generation and the Modified Gompertz equation was used to determine the kinetics of anaerobic biodegradability. The research found that MW/H2O2-AOP was effective in solubilizing nutrients and organics in liquid dairy manure, but it does not necessarily translate into enhanced anaerobic biodegradability. The BMP tests revealed that digestion of untreated dairy manure at 35?C had the highest methane yields. Severe inhibition was observed for the digestion of acidified dairy manure. This was attributed to sulfide inhibition. In addition, ammonia concentrations were suspected as the main reason for severe inhibition of microwave treated dairy manure with no acid addition, but a number of other factors could also be responsible, including sulfide, light metals and lack of temperature acclimation for inoculum. Pretreatment of sewage sludge and BMP tests were also conducted to compare the effect of MW/H2O2-AOP with dairy manure. The results showed that the microwave treatment had …
has type: Thesis/Dissertation
date issued: 2013-11
is shown at: 10.14288/1.0074117
language: eng
degree discipline: Civil Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivs 2.5 Canada
rights URI: http://creativecommons.org/licenses/by-nc-nd/2.5/ca/
scholar level: Graduate
type: Text
identifier URI: http://hdl.handle.net/2429/44854