Adsorption and toxicity of heavy metals on activated sludge
Link to publisher's homepage http://www.scisoc.or.th/
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| اللغة: | English |
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Science Society of Thailand
2011
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| الوصول للمادة أونلاين: | http://dspace.unimap.edu.my/xmlui/handle/123456789/12163 |
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my.unimap-121632011-05-31T02:22:24Z Adsorption and toxicity of heavy metals on activated sludge Soon-An, Ong Toorisaka, Eiichi Hirata, Makoto Hano, Tadashi ongsoonan@yahoo.com Acute toxicity Adsorption capacity Biomass Isotherms Specific oxygen uptake rate Link to publisher's homepage http://www.scisoc.or.th/ The adsorption of Cu, Cd, Ni, Zn, and Cr from synthetic solutions on powdered activated carbon (PAC), activated sludge, and dried sludge were investigated under laboratory conditions to assess its ability to remove heavy metals. The adsorption efficiency increased rapidly within the first 30 min and then slowed down as it approached a steady state after 5 h of contact time. The results showed that activated sludge and PAC had a higher adsorption capacity than dried sludge. However, PAC showed a better adsorption capacity for Cu, Zn, and Ni than activated sludge. The maximum adsorption capacity, as quantified by the Langmuir parameter Q for activated sludge was 44, 30, 24, 23, and 18 mg/g for Cu, Ni, Cd, Cr, and Zn, respectively. In the case of dried sludge, the respective values of Q were 20, 13, 11, 3, and 10 mg/g. The acute toxicity of these five heavy metals to the activated sludge microorganisms was determined on the basis of the reduction in the specific oxygen uptake rate (SOUR). The results obtained from the SOUR measurements indicated a decreasing toxicity scale, Cu > Cd > Ni ' Cr > Zn on activated sludge microorganisms. 2011-05-31T02:22:23Z 2011-05-31T02:22:23Z 2010-09 Article ScienceAsia, vol. 36(3), 2010, pages 204–209 1513-1874 http://www.scienceasia.org/2010.36.n3/scias36_204.pdf http://hdl.handle.net/123456789/12163 en Science Society of Thailand |
| 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 |
Acute toxicity Adsorption capacity Biomass Isotherms Specific oxygen uptake rate |
| spellingShingle |
Acute toxicity Adsorption capacity Biomass Isotherms Specific oxygen uptake rate Soon-An, Ong Toorisaka, Eiichi Hirata, Makoto Hano, Tadashi Adsorption and toxicity of heavy metals on activated sludge |
| description |
Link to publisher's homepage http://www.scisoc.or.th/ |
| author2 |
ongsoonan@yahoo.com |
| author_facet |
ongsoonan@yahoo.com Soon-An, Ong Toorisaka, Eiichi Hirata, Makoto Hano, Tadashi |
| format |
Article |
| author |
Soon-An, Ong Toorisaka, Eiichi Hirata, Makoto Hano, Tadashi |
| author_sort |
Soon-An, Ong |
| title |
Adsorption and toxicity of heavy metals on activated sludge |
| title_short |
Adsorption and toxicity of heavy metals on activated sludge |
| title_full |
Adsorption and toxicity of heavy metals on activated sludge |
| title_fullStr |
Adsorption and toxicity of heavy metals on activated sludge |
| title_full_unstemmed |
Adsorption and toxicity of heavy metals on activated sludge |
| title_sort |
adsorption and toxicity of heavy metals on activated sludge |
| publisher |
Science Society of Thailand |
| publishDate |
2011 |
| url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/12163 |
| _version_ |
1643789927512539136 |
| score |
13.251813 |