Effects of different additives with assistance of microwave heating for heavy metal stabilization in electronic industry sludge

Chemosphere
R JothiramalingamChing-Lung Chen

Abstract

Electronic industrial wastewater sludge in Taiwan is normally passed through an acid-extraction process to reclaim most of the copper ions, the remaining residue may still need to be treated by various stabilization technologies using suitable additives. Cement solidification is used as the common method to stabilize the industrial wastewater sludge in Taiwan. However, this method has the disadvantage of an increase in waste volume. In the present study selective additives such as sodium sulfide, barium manganate and different phase of alumina were tested as a possible alternate additive to stabilize the heavy metal ion in the treated solid waste sludge via microwave heating treatment. The effects of additive amount, power of microwave irradiation and reaction time have been studied. Heavy metal leaching capacity is determined by using standard toxicity characteristic leaching procedure test and elemental content in the leachate is analyzed by inductively coupled plasma analysis. Sodium sulfide is effectively stabilizing the leaching copper ion with high selectivity in the presence of microwave irradiation and finally stabilized in the form of copper sulfide, which is a significant reaction to stabilize the copper ion leaching ...Continue Reading

References

Jun 7, 2005·Journal of Hazardous Materials·Ching-Lung ChenChing-Hong Hsieh
Mar 1, 2006·Journal of Hazardous Materials·Rachana Malviya, Rubina Chaudhary
Jul 26, 2006·Journal of Hazardous Materials·Ching-Hong HsiehChing-Lung Chen
Mar 6, 2007·Journal of Hazardous Materials·Ching-Lung ChenChing-Hong Hsieh
Feb 1, 2008·Accounts of Chemical Research·Steven L Suib

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Citations

Sep 11, 2014·Environmental Technology·Tianfen XuQi-Tang Wu
Nov 4, 2015·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Chih-Mei ChouYu-Min Chang

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