Sustainable Treatment for Sulfate and Lead Removal from Battery Wastewater

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Sustainable Treatment for Sulfate and Lead Removal from Battery Wastewater

Sustainable Treatment for Sulfate and Lead Removal from Battery Wastewater

Hong Ha Thi Vu, Shuai Gu, Thenepalli Thriveni, Mohd Danish Khan, Lai Quang Tuan, Ji Whan Ahn

Abstract

In this study, we present a low-cost and simple method to treat spent lead–acid battery wastewater using quicklime and slaked lime. The sulfate and lead were successfully removed using the precipitation method. The structure of quicklime, slaked lime, and resultant residues were measured by X-ray diffraction. The obtained results show that the sulfate removal efficiencies were more than 97% for both quicklime and slaked lime and the lead removal efficiencies were 49% for quicklime and 53% for slaked lime in a non-carbonation process.

After the carbonation step, the sulfate removal efficiencies were slightly decreased but the lead removal efficiencies were 68.4% for quicklime and 69.3% for slaked lime which were significantly increased compared with the non-carbonation process. This result suggested that quicklime, slaked lime, and carbon dioxide can be a potential candidate for the removal of sulfate and lead from industrial wastewater treatment. View Full-Text

Keywords : sustainable; battery wastewater; sulfate removal; lead removal

Sustainability 2019, 11(13), 3497; https://doi.org/10.3390/su11133497

Source: MDPI

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