Advisor(s)
April Gu
Date of Award
2008
Date Accepted
8-2008
Degree Grantor
Northeastern University
Degree Level
M.S.
Degree Name
Master of Science
Department or Academic Unit
College of Engineering. Department of Civil and Environmental Engineering.
Keywords
Civil and environmental engineering, Sequencing batch reactors (SBR)
Subject Categories
Separation (Technology), Denitrification
Disciplines
Civil and Environmental Engineering
Abstract
In this study, we used Sequencing Batch Reactors (SBR) to enrich for three denitrifying cultures that were fed with three carbon sources: Methanol, Acetate and MicroC with the aims to 1) evaluate and compare the denitrification rates and kinetics among different carbon sources, and 2) evaluate the ability of these enrichments to remove perchlorate from wastewater. Three SBR systems, using Methanol, Acetate and MicroC as carbon sources, were developed and monitored for nitrogen removal under two temperature (10 and 20 °C) conditions. Results obtained from denitrification batch tests during the monitoring process showed that the Methanol acclimated sludge had the highest denitrification rate followed by MicroC acclimated sludge then Acetate acclimated sludges. Results obtained from denitrification batch test at 10°C showed that MicroC acclimated sludge denitrification rate was better than Methanol acclimated sludge. Acetate acclimated sludge affected by the temperature change from 20°C to 10°C, this sensitivity caused to the accumulation of nitrite due to partial denitrification. Results showed that culture acclimated with different carbon sources (electron donors) had different denitrification rates and kinetics, therefore requires for different design considerations for denitrification processes. All the denitrifying enrichments were able to reduce perchlorate at different rates even with the presence of nitrate.
Document Type
Master's Thesis
Rights Holder
Ibrahim Nimer EL-Shawabkeh
Permanent URL
Recommended Citation
El-Shawabkeh, Ibrahim Nimer, "Comparison of MICROC™, methanol and acetate as external carbon sources in removal of nitrate and perchlorarte from wastwater by denitrifying enrichments" (2008). Civil Engineering Master's Theses. Paper 3. http://hdl.handle.net/2047/d10017719
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