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2007•Journal of Agricultural Mechanization ResearchRequires access

A Review for Heavy Metal Removal from Sludge

Liang Xinqiang

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Abstract

Removing the total amount of heavy metals efficiently from sludge was the key of its land application. In this paper, a review of chemical extraction, bioleaching, electro reclamation, and supercritical fluid extraction (SFE) in removing heavy metals from sewage sludge is presented in aspect of principle, research actuality and application. Moreover, the efficiencies, advantages and disadvantages of these methods are compared in order to offer theories to innocent and utilization of the sewage sludge.

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What this paper is about

Removing the total amount of heavy metals efficiently from sludge was the key of its land application. In this paper, a review of chemical extraction, bioleaching, electro reclamation, and supercritical fluid extraction (SFE) in removing heavy metals from sewage sludge is presented in aspect of principle, research actuality and application. Moreover, the efficiencies, advantages and disadvantages of these methods are compared in order to offer theories to innocent and utilization of the sewage sludge.

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Available abstract

Removing the total amount of heavy metals efficiently from sludge was the key of its land application. In this paper, a review of chemical extraction, bioleaching, electro reclamation, and supercritical fluid extraction (SFE) in removing heavy metals from sewage sludge is presented in aspect of principle, research actuality and application. Moreover, the efficiencies, advantages and disadvantages of these methods are compared in order to offer theories to innocent and utilization of the sewage sludge.

Key concepts: Bioleaching, Land reclamation, Sewage sludge, Heavy metals, Waste management, Extraction (chemistry), Sewage sludge treatment, Environmental science

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