Abstract
A large amount of arsenic-containing solid waste is produced in the metallurgical process of heavy nonferrous metals (copper, lead, and zinc). The landfill disposal of these arsenic-containing solid waste will cause serious environmental problems and endanger people’s health. An electrochemical advanced oxidation experiment was carried out with the cathode modified by adding carbon black and polytetrafluoroethylene (PTFE) emulsion. The removal rate of arsenic using advanced electrochemical oxidation with the modified cathode in 75 g/L NaOH at 25 °C for 90 min reached 98.4%, which was significantly higher than 80.69% of the alkaline leaching arsenic removal process. The use of electrochemical advanced oxidation technology can efficiently deal with the problem of arsenic-containing toxic solid waste, considered as a cleaner and efficient method.
Highlights
The carbon felt was ultrasonically cleaned in a mixed solution of acetone, ethanol, and ultrapure water for 30 min and dried in a vacuum drying oven at 60 ◦ C for 24 h
The carbon felt sample was labeled as the original carbon felt
The Arsenic-containing copper smelting dust (ARCD) contains a variety of metal elements
Summary
The output of nonferrous metals is increasing by the year, and most of the heavy nonferrous metal concentrates contain arsenic. The arsenic in these heavy nonferrous metal minerals is mainly combined with copper, lead, zinc, and sulfur [1,2]. Arsenic-containing copper smelting dust (ARCD) is a solid hazardous waste formed through processes such as copper smelting, converting, and anode slime smelting [6]. Arsenic mainly forms compounds with copper and sulfur in copper sulfide concentrates. During the copper smelting process, part of the arsenic will enter the copper smelting dust. If the ARCD is not appropriately treated, it will have a more significant impact on the environment and human health
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
