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Diagnosis and Ecotoxicological Risk Assessment of 49 Elements in Sludge From Wastewater Treatment Plants of Chongqing and Xiamen Cities, China

Diagnosis and Ecotoxicological Risk Assessment of 49 Elements in Sludge From Wastewater Treatment Plants of Chongqing and Xiamen Cities, China

Fidèle Suanon, Qiaoqiao Chi, Xiaoyong Yang, Hongjie Wang, Azhar Rashid, Bahareh Asefi, Daouda Mama, Chang-Ping Yu, Qian Sun

Environ Sci Pollut Res Int. 2018 Oct;25(29):29006-29016.

PMID: 30109684

Abstract:

Limited information about the sludge quality is a major constraint for its usage and proper disposal. This study investigated the occurrence of 49 elements in sludge from 11 wastewater treatment plants (WWTPs) in Chongqing and Xiamen cities of China. The concentration of 46-detected elements ranged from 16.2 μg kg-1 (Pt) to 55.0 g kg-1 (Al) on dry solid basis in the sludge. The enrichment factor of most of the elements was > 1.5, indicating their possible anthropogenic origin. The precious metals had considerably higher enrichment factor ranging from 56.3 to 200,000. Principal component analysis clustered the samples from Chongqing and Xiamen separately to suggest strong spatial variations. Contamination factor, pollution loading index, and integrated pollution degree were calculated to evaluate the elemental pollution risk. The pollution loading index indicated unpolluted to highly polluted levels of the elements in the sludge. In addition, results from the ecotoxicological risk index showed an individual low to very high ecotoxicological risk posed by eight metal(loid)s (As, Cd, Cr, Cu, Mn, Ni, Pb, and Zn) in the WWTPs.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42148	Metals in Sewage Sludge - PT			Price

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