Abstract
Activated carbon is an adsorbent material with pore structure, which is environmentally friendly and easy to operate. It is widely used in human production and life. However, the spent activated carbon has not been properly treated, and adsorption of harmful elements is highly likely to cause secondary pollution of the environment. Through the regeneration of waste mercury catalyst in PVC (Polyvinyl chloride) industry, the effects of different activators on the regeneration performance of spent activated carbon were studied. It was found that the regeneration effect of carbon dioxide on spent activated carbon was significant at 900 °C. The removal rate of harmful mercury-containing compounds from regenerated activated carbon can be reached 99.96%, and the specific surface area reaches 750.755 m2·g−1, which has basically met the adsorption performance index of activated carbon for wastewater treatment. This study is expected to provide theoretical support for the treatment of waste adsorbent material containing harmful elements and reveal the mechanism of regenerating activated carbon under different activator conditions.
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