Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process

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Main Authors: Ong, Soon An, Eiichi, Toorisaka, Makoto, Hirata, Tadashi, Hano
Other Authors: saong@unimap.edu.my
Format: Article
Language:English
Published: Elsevier B.V. 2016
Subjects:
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/42188
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spelling my.unimap-421882016-06-25T01:44:33Z Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process Ong, Soon An Eiichi, Toorisaka Makoto, Hirata Tadashi, Hano saong@unimap.edu.my Activated sludge Inhibitory effect Nickel Sequencing batch reactor SOUR Link to publisher's homepage at http://www.journals.elsevier.com/ The effects of Ni(II) in a synthetic wastewater on the activity of activated sludge microorganisms and sequencing batch reactor (SBR) treatment process were investigated. Two parallel lab-scale SBR systems were operated. One was used as a control unit, while the other received Ni(II) concentrations equal to 5 and 10 mg/l. The SBR systems were operated with FILL, REACT, SETTLE, DRAW and IDLE modes in the time ratio of 0.5:3.5:1.0:0.75:0.25 for a cycle time of 6 h. The addition of Ni(II) into SBR system caused drastically dropped in TOC removal rate (k) and specific oxygen uptake rate (SOUR) by activated sludge microorganisms due to the inhibitory effects of Ni(II) on the bioactivity of microorganisms. The addition of 5 mg/l Ni(II) caused a slight reduction in TOC removal efficiency, whereas 10 mg/l Ni(II) addition significantly affected the SBR performance in terms of suspended solids and TOC removal efficiency. Termination of Ni(II) addition led to almost full recovery of the bioactivity in microorganisms as shown in the increase of specific oxygen uptake rate (SOUR) and SBR treatment performance. 2016-06-25T01:44:33Z 2016-06-25T01:44:33Z 2004-09-10 Article Journal of Hazardous Materials, vol.113 (1-3), 2004, pages 111-121 0304-3894 http://dspace.unimap.edu.my:80/xmlui/handle/123456789/42188 Journal of Hazardous Materials en Elsevier B.V.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Activated sludge
Inhibitory effect
Nickel
Sequencing batch reactor
SOUR
spellingShingle Activated sludge
Inhibitory effect
Nickel
Sequencing batch reactor
SOUR
Ong, Soon An
Eiichi, Toorisaka
Makoto, Hirata
Tadashi, Hano
Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process
description Link to publisher's homepage at http://www.journals.elsevier.com/
author2 saong@unimap.edu.my
author_facet saong@unimap.edu.my
Ong, Soon An
Eiichi, Toorisaka
Makoto, Hirata
Tadashi, Hano
format Article
author Ong, Soon An
Eiichi, Toorisaka
Makoto, Hirata
Tadashi, Hano
author_sort Ong, Soon An
title Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process
title_short Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process
title_full Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process
title_fullStr Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process
title_full_unstemmed Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process
title_sort effects of nickel(ii) addition on the activity of activated sludge microorganisms and activated sludge process
publisher Elsevier B.V.
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/42188
_version_ 1643799639560814592
score 13.23648