用柠檬酸、草酸和葡萄糖酸分批浸出煤灰中的铬

2014 International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM) Pub Date : 2014-11-01 DOI:10.1109/HNICEM.2014.7016250

Denvert Pangayao, S. Gallardo

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引用次数: 6

摘要

采用柠檬酸、草酸和葡萄糖酸对煤飞灰中铬进行浸出。粉煤灰含铬量为28 ppm。经过间歇浸出程序，结果表明，使用0.3 M柠檬酸，接触时间为8小时，铬的浸出率为27.66%。有机酸对铬的浸出能力大小依次为柠檬酸>葡萄糖酸>草酸。此外，3种有机酸的混合物与0.0317 M柠檬酸、0.0266 M草酸和0.06265 M葡萄糖酸的接触时间不同。混合有机酸作用24小时后，铬的浸出率仅为8.62%。

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Leaching of chromium from coal ash using citric acid, oxalic acid and gluconic acid by batch leaching procedure

This study aims to leach chromium from coal fly ash using citric acid, oxalic acid and gluconic acid. Fly ash obtained from coal ash pond comprises of 28 ppm chromium. After the batch leaching procedure, the results show that 27.66% of chromium was leached using 0.3 M citric acid with the contact time of 8 hours. Also, the order of the ability of the organic acid to leached chromium are as follows citric acid > gluconic acid > oxalic acid. Moreover, mixture of 3 organic acids were used with 0.0317 M citric acid, 0.0266 M oxalic acid and 0.06265 M gluconic acid with varying contact time. Only 8.62% of chromium was leached after 24 hours using mixed organic acid.

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2014 International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment and Management (HNICEM)

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