Bio-physical removal of heavy metal from aqueous solution

The aim of this study was to compare the performance of a suspended growth bioreactor and a combined bio-physical bioreactor for Zn2+ removal from aqueous solution. Two identical bioreactors (8.5Â L each) were operated at a fixed HRT of 29.1Â h. The suspended growth bioreactor was used as the contro...

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Main Authors: Kutty, S.R.M., Ezechi, E.H., Khaw, S.G., Lai, C.L., Isa, M.H.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.25716 /
Published: Taylor and Francis Inc. 2016
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975129664&doi=10.1080%2f19443994.2016.1193768&partnerID=40&md5=284db68caac41fd585f7e9ba1b94c0b8
http://eprints.utp.edu.my/25716/
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spelling utp-eprints.257162021-08-27T09:40:57Z Bio-physical removal of heavy metal from aqueous solution Kutty, S.R.M. Ezechi, E.H. Khaw, S.G. Lai, C.L. Isa, M.H. The aim of this study was to compare the performance of a suspended growth bioreactor and a combined bio-physical bioreactor for Zn2+ removal from aqueous solution. Two identical bioreactors (8.5 L each) were operated at a fixed HRT of 29.1 h. The suspended growth bioreactor was used as the control reactor and contained only sludge. The bio-physical bioreactor contains sludge and a low-cost adsorbent derived from groundwater treatment plant sludge. The influent Zn2+ concentration was varied from 0.5 to 15 mg/L in 8 experimental phases. Influent and effluent Zn2+ concentration was monitored daily. Phase 1 (day 1�15) and phase 2 (day 16�29) were used as acclimation period for both bioreactors, respectively. Results show that Zn2+ removal increased with increasing influent Zn2+ concentration from 0.5 to 1.0 mg/L (phases 3�4) but fluctuated thereafter for the suspended growth bioreactor. Zn2+ removal in the bio-physical bioreactor increased with increasing influent Zn2+ concentration from 0.5 to 10 mg/L (phases 3�7) and decreased with further increase in influent Zn2+ concentration to 15 mg/L (phase 8). The effluent Zn2+ concentration in phase 8 for the suspended growth and the bio-physical bioreactors were 58.7 and 90, respectively. The higher removal of Zn2+ in the bio-physical bioreactor was due to heavy metal tolerance and the resistance in heavy metal toxicity on the microbial community of the combined system. © 2016 Balaban Desalination Publications. All rights reserved. Taylor and Francis Inc. 2016 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975129664&doi=10.1080%2f19443994.2016.1193768&partnerID=40&md5=284db68caac41fd585f7e9ba1b94c0b8 Kutty, S.R.M. and Ezechi, E.H. and Khaw, S.G. and Lai, C.L. and Isa, M.H. (2016) Bio-physical removal of heavy metal from aqueous solution. Desalination and Water Treatment, 57 (59). pp. 28932-28938. http://eprints.utp.edu.my/25716/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description The aim of this study was to compare the performance of a suspended growth bioreactor and a combined bio-physical bioreactor for Zn2+ removal from aqueous solution. Two identical bioreactors (8.5 L each) were operated at a fixed HRT of 29.1 h. The suspended growth bioreactor was used as the control reactor and contained only sludge. The bio-physical bioreactor contains sludge and a low-cost adsorbent derived from groundwater treatment plant sludge. The influent Zn2+ concentration was varied from 0.5 to 15 mg/L in 8 experimental phases. Influent and effluent Zn2+ concentration was monitored daily. Phase 1 (day 1�15) and phase 2 (day 16�29) were used as acclimation period for both bioreactors, respectively. Results show that Zn2+ removal increased with increasing influent Zn2+ concentration from 0.5 to 1.0 mg/L (phases 3�4) but fluctuated thereafter for the suspended growth bioreactor. Zn2+ removal in the bio-physical bioreactor increased with increasing influent Zn2+ concentration from 0.5 to 10 mg/L (phases 3�7) and decreased with further increase in influent Zn2+ concentration to 15 mg/L (phase 8). The effluent Zn2+ concentration in phase 8 for the suspended growth and the bio-physical bioreactors were 58.7 and 90, respectively. The higher removal of Zn2+ in the bio-physical bioreactor was due to heavy metal tolerance and the resistance in heavy metal toxicity on the microbial community of the combined system. © 2016 Balaban Desalination Publications. All rights reserved.
format Article
author Kutty, S.R.M.
Ezechi, E.H.
Khaw, S.G.
Lai, C.L.
Isa, M.H.
spellingShingle Kutty, S.R.M.
Ezechi, E.H.
Khaw, S.G.
Lai, C.L.
Isa, M.H.
Bio-physical removal of heavy metal from aqueous solution
author_sort Kutty, S.R.M.
title Bio-physical removal of heavy metal from aqueous solution
title_short Bio-physical removal of heavy metal from aqueous solution
title_full Bio-physical removal of heavy metal from aqueous solution
title_fullStr Bio-physical removal of heavy metal from aqueous solution
title_full_unstemmed Bio-physical removal of heavy metal from aqueous solution
title_sort bio-physical removal of heavy metal from aqueous solution
publisher Taylor and Francis Inc.
publishDate 2016
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84975129664&doi=10.1080%2f19443994.2016.1193768&partnerID=40&md5=284db68caac41fd585f7e9ba1b94c0b8
http://eprints.utp.edu.my/25716/
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score 11.62408

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