TAILIEUCHUNG - Optimization of the leaching process of the printed circuit boards production's sludge for copper recovery via electrolysis

The process of copper leaching by sulfuric acid solution was studied using experimental planning methods using the simulation software Modde . The parameters were calculated and simulated to evaluate the effect of the acid concentration, leaching time, and the ratio between the solid and liquid phases on the leaching efficiency. The obtained results by simulation were compared with real experimental results. The obtained results from this study are planning in the actual deployment of the Hanoi Urban Environment One Member Limited Company in Vietnam. | Vietnam Journal of Chemistry, International Edition, 55(2): 254-258, 2017 DOI: Optimization of the leaching process of the printed circuit boards production's sludge for copper recovery via electrolysis Nguyen Thi Thu Huyen*, Dang Trung Dung, Nguyen Huong Giang, Nguyen Dang Binh Thanh, Mai Thanh Tung, Hoang Thi Bich Thuy School of Chemical Engineering, Hanoi University of Science and Technology Received 1 August 2016; Accepted for publication 11 April 2017 Abstract Copper is the main component of printed circuit boards (PCBs) which is the main part of an electronic device. The manufacture of PCBs often releases huge amount of sludge which contained copper. Derived from the demand of the industrial park about the wasted sludge treatment and the reducing of the plantation of natural mineral resources, the copper recovery process from PCBs manufacture's wasted sludge was studied. The process of copper leaching by sulfuric acid solution was studied using experimental planning methods using the simulation software Modde . The parameters were calculated and simulated to evaluate the effect of the acid concentration, leaching time, and the ratio between the solid and liquid phases on the leaching efficiency. The obtained results by simulation were compared with real experimental results. The obtained results from this study are planning in the actual deployment of the Hanoi Urban Environment One Member Limited Company in Vietnam. Keywords. Printed circuit board, copper sludge, leaching. 1. INTRODUCTION The production of electronic equipment is rapidly increasing in the world as a result of the revolution of information technology. Consequently, waste electronic equipment is a growing concern globally. Printed circuit boards (PCBs) are used in almost all electronics today and fabricated in large volumes across the world. The increasing volume of waste discharges from PCBs manufacture poses an environmental threat, as this sludge can .

• Hoá học
• Vietnam Journal of Chemistry
• Optimization of the leaching process
• The printed circuit boards productions sludge
• Copper recovery via electrolysis
• The Hanoi Urban Environment One Member Limited Company
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