Login | Register

Integration of Anaerobic Digestion by UASB into a Hybrid Treatment Process of Waste Streams from Paper Recycling and its Potential for Bioconversion of Carbon Dioxide to Methane

Title:

Integration of Anaerobic Digestion by UASB into a Hybrid Treatment Process of Waste Streams from Paper Recycling and its Potential for Bioconversion of Carbon Dioxide to Methane

Hamze, Bana (2018) Integration of Anaerobic Digestion by UASB into a Hybrid Treatment Process of Waste Streams from Paper Recycling and its Potential for Bioconversion of Carbon Dioxide to Methane. Masters thesis, Concordia University.

[img]
Preview
Text (application/pdf)
Hamze_MASc_ S2018 .pdf - Accepted Version
Available under License Spectrum Terms of Access.
6MB

Abstract

Waste management and renewable energies are both major environmental concerns related to the largest global issue of today, climate change. Anaerobic digestion (AD) systems are able to reduce greenhouse gases (GHGs) that lead to climate change by producing biomethane gas to use as renewable energy, while treating organic waste. AD systems can also serve as carbon sinks because they are able to biologically convert excess carbon dioxide dissolved in the culture, into additional methane gas. Continuous experiments were conducted with five-litre UASB reactors that focused on simulating full-scale operating parameters at a Cascades’ paper recycling plant, and employed recycling waste streams as substrates. Experiments compared conditions of single and 2 phase anaerobic digestion (2-PAD), liquid and granular sludge beds, influent wastewater and deinking sludge substrates, temperatures between 25-45 °C, hydraulic retention times between 1 to 5 days and organic loading rates between 0.5-5.0 kg COD/m3-d. Methane yields across all conditions averaged 0.15 m3 CH4/kg CODrmv for total COD and 0.24 m3 CH4/kg CODrmv for soluble COD. Removal efficiencies consistently averaged 90% for all conditions. After feeding 2-PAD systems CO2 infused wastewater, successful bioconversion for soluble COD was observed in all organic loading rate conditions, showing between 5-21% higher methane yields for CO2 conditions, compared to control. Heavy metals from deinking sludge were monitored though no inhibition was observed. Cost analysis showed that adopting AD as a pretreatment could result in up to 1,733,100 CAD/year in additional revenue. Results of this research provide a solid guideline to pursue developing a pilot scale system.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Thesis (Masters)
Authors:Hamze, Bana
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Civil Engineering
Date:11 April 2018
Thesis Supervisor(s):Mulligan, Catherine
ID Code:983871
Deposited By: BANA HAMZE
Deposited On:11 Jun 2018 02:10
Last Modified:11 Jun 2018 02:10
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Downloads per month over past year

Back to top Back to top