Details

Autor(en) / Beteiligte

• Zhao, Shu-Hua
• Chen, Zhi-Liang
• Zhang, Tai-Ping
• Pan, Wei-Bin
• Peng, Xiao-Chun
• Che, Rong
• Ou, Ying-Juan
• Lei, Guo-Jian
• Zhou, Ding

Titel

Effects of stabilization treatment on migration and transformation of heavy metals in mineral waste residues

Ist Teil von

• Huanjing kexue, 2014, Vol.35 (4), p.1548

Ort / Verlag

China

Erscheinungsjahr

2014

Quelle

MEDLINE

Beschreibungen/Notizen

• Different forms of heavy metals in soil will produce different environmental effects, and will directly influence the toxicity, migration and bioavailability of heavy metals. This study used lime, fly ash, dried sludge, peanut shells as stabilizers in the treatment of heavy metals in mineral waste residues. Morphological analyses of heavy metal, leaching experiments, potted plant experiments were carried out to analyze the migration and transformation of heavy metals. The results showed that after adding stabilizers, the pH of the acidic mineral waste residues increased to more than neutral, and the organic matter content increased significantly. The main existing forms of As, Pb, and Zn in the mineral waste residues were the residual. The contents of exchangeable and organic matter-bound As decreased by 65.6% and 87.7% respectively after adding fly ash, dried sludge and peanut shells. Adding lime, fly ash and peanut shells promoted the transformation of As from the Fe-Mn oxide-bound to the carbonate-bound, a