Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.biortech.2006.10.048
Title: Simultaneous ammonium-nitrogen and copper removal, and copper recovery using nitrifying biofilm from the Ultra-Compact Biofilm Reactor
Authors: Lee, L.Y. 
Ong, S.L. 
Ng, H.Y. 
Hu, J.Y. 
Koh, Y.N.
Keywords: Ammonia-nitrogen removal
Copper recovery
Extracellular polymer substance
Nitrifying biofilm
Issue Date: Sep-2008
Source: Lee, L.Y., Ong, S.L., Ng, H.Y., Hu, J.Y., Koh, Y.N. (2008-09). Simultaneous ammonium-nitrogen and copper removal, and copper recovery using nitrifying biofilm from the Ultra-Compact Biofilm Reactor. Bioresource Technology 99 (14) : 6614-6620. ScholarBank@NUS Repository. https://doi.org/10.1016/j.biortech.2006.10.048
Abstract: Simultaneous ammonium-nitrogen (NH4 + s(-) N) and copper removal, and copper recovery in synthetic wastewater using nitrifying biofilm from an ultra-compact biofilm reactor (UCBR) was demonstrated in batch studies, which consisted of three phases: Phase 1 for NH4 + s(-) N and copper removals, Phase 2 for copper recovery, and Phase 3 for NH4 + s(-) N removal. The results showed that more than 96.3% of copper was removed within 60 min, while 60.1% of the adsorbed copper was recovered through rinsing the biofilms with 0.1 mM of ethylenediaminetetraacetic acid (EDTA). The nitrifying biofilm was able to adsorb 0.245 mg of copper/g of biofilms. After recovery treatment, 29.4% of copper remained bound within the nitrifying biofilms. No significant inhibitory effects towards NH4 + s(-) N removal in the presence of 0.92 mg copper/L was noted in Phase 1 compared with the control test. However, lower initial pH condition in the recovery process and the accumulation of copper on the biofilm led to 50% inhibition on NH4 + s(-) N removal efficiency in the subsequent phase. © 2007 Elsevier Ltd. All rights reserved.
Source Title: Bioresource Technology
URI: http://scholarbank.nus.edu.sg/handle/10635/84671
ISSN: 09608524
DOI: 10.1016/j.biortech.2006.10.048
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

6
checked on Feb 21, 2018

WEB OF SCIENCETM
Citations

6
checked on Jan 15, 2018

Page view(s)

33
checked on Feb 18, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.