Extraction of heavy metals from e-waste contaminated soils using EDDS
作者： Renxiu Yang , Chunling Luo , Gan Zhang , Xiangdong Li , Zhenguo Shen
DOI: 10.1016/S1001-0742(11)61036-X
关键词:
摘要: Environmental contamination due to uncontrolled e-waste recycling activities is drawing increasing attention in the world. Extraction of these metals with biodegradable chelant [S,S]-ethylenediaminedisuccinic acid (EDDS) and factors influencing extraction efficacy were investigated present study. Results showed that addition EDDS at low pH (5.5) produced higher metal than high (8.0) solution. Metal speciation analysis indicated Cu was completely complexed different conditions various amounts applied. For Pb Zn, dose 0.304 mol/kg soil, they as Pb- Zn-EDDS. However, 1.26 most bound dissolved organic matter. Ca Al found be strong competitors for trace application condition.
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