Effect of temperature on copper, iron and lead leaching from e-waste using citrate solutions

Waste Management
Robinson TorresGretchen T Lapidus

Abstract

E-waste is a potential source of large quantities of metals. The ability of citrate solutions to recover base metals from these materials has been demonstrated. In the present study, the effect of the temperature on base metal leaching capacity by the citrate solutions is determined. The material employed consisted of a mechanically prepared, gravity concentrated e-waste, with a metallic content greater than 90%. The leaching conditions were selected based on previous research performed by the authors (0.5 M sodium citrate, pH 4.5 and 20 g per liter e-waste concentrate). Leaching tests were performed at temperatures between 0° and 70 °C. The initial leaching rates for the three metals increased with temperature. However, these tapered off with time for temperatures above 30 °C, which can be associated to citrate destruction.

Citations

Jun 15, 2019·Materials·Behrouz SabzezariSaeed Chehreh Chelgani
Jul 17, 2018·Waste Management·Adriana Ramos-RuizReyes Sierra-Alvarez
Jul 10, 2020·Environmental Science & Technology·Zhuoran WuChor Yong Tay
Sep 4, 2021·Environmental Science and Pollution Research International·Ayse YuksekdagIsmail Koyuncu

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