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Behaviour and Fate of Heavy Metals in the Composting of Industrial Tannery Sludge

Mahdi Ahmed, and Azni Idris, and Syed Omer, S.R. (2007) Behaviour and Fate of Heavy Metals in the Composting of Industrial Tannery Sludge. Malaysian Journal of Analytical Sciences, 11 (2). pp. 340-350. ISSN 13942506

Full text not available from this repository.

Official URL: http://pkukmweb.ukm.my/~mjas/v11_n2/v11_n2b.html

Affiliations

Universiti Putra Malaysia, Faculty of Engineering, Dept. of Chemical and Environment
Universiti Putra Malaysia, Faculty of Engineering, Dept. of Chemical and Environment
Universiti Putra Malaysia, Faculty of Agriculture, Dept. of Land Management

Abstract

It is known that heavy metals, when in high enough concentrations, have the potential to be both phytotoxic and zootoxic. Heavy metals are frequently found as contaminants in tannery sludge. Any sludge that is subsequently segregated for composting theoretically has the potential to retain the possible contamination. To date, there have been a limited number of publications addressing this issue. Most reports have concentrated on the types of heavy metals found in the composting process. As such, this investigation aimed to identify the fate of chromium, cadmium, copper, lead, and zinc, concentrations in tannery sludge throughout a fifty day compos ting cycle. The results of this study showed a general increase in the removal of Cr, Cd, Pb, and to a much smaller extent Zn and Cu, evident by a decrease in their overall concentrations within the solid fraction of the final product, by 38.5, 33.3, 31.2, 22.6 and 11.8 percent respectively.

Adalah diketahui bahwa logam berat, sekiranya berada pada kepekatan yang cukup tinggi, akan mempunyai potensi untuk menjadi. phyto- toksid dan 300-toksid. Logam berat selalunya dijumpai sebagai bahan cemar dalam takungan samak Lumpur. Sebarang Lumpur yang kemudiannya dipisahasingkan bagi tujuan pengkomposan, secara teorinya akan mempunyai potensi untuk mengekalkan bahan cemar yang mungkin. Sehingga kini, terdapat bilangan publikasi yang terhad, yang melaporkan berkenaan ISU ini. Kebanyakan laporan lebrh memfokuskan kepada jenis logam berat yang dijumpai. Sewaktu proses pengkomposan. Demikian begitu, penyasatan ini telah terarah kepada pengenalpastian ketakdiran dah kepekatan bagi kromum, cadmium, kuprum, plumbum dan zink yang. Berada pada takungan Lumpur samak sepanjang lima hari kitaran pengkomposan. Keputusan bagi Cr, Cd, Pb dan hanya lebih sedikit bagi Zn dan Cu, sebagai bukyi tentang pengurangan kepekatan keseluruhan didalam lingkungan pesahan pepejal bagi produk akhir dengan nilai peratusan mosing-masing adalah sebanyak 38.5, 33.3, 31.2, 22.6 dan 11.8 peratus.

Item Type:Journal
Additional Information:The authors wish to express their appreciation to Mr. Rosallein, the Director of Kenny Leather Sdn. Bhd., for their financial support of this research.
Keywords:Tannery sludge, heavy metals, fate, composting, environmental sciences
Subjects:Q Science
ID Code:990

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