Removal of Cu2+ from Aqueous Water by Adsorption onto the Efficient and Recyclable Durian Shell-Derived Activated Carbon

• Published in: Applied mechanics and materials Vol. 876; pp. 46 - 51
• Main Authors: Bach, Long Giang, Vo, Dai Viet N., Nguyen, Trinh Duy, Tran, Van Thuan, Ho, Van Thi Thanh
• Format: Journal Article
• Language: English
• Published: Zurich Trans Tech Publications Ltd 01.02.2018
• Subjects: Activated carbon; Adsorption; Copper; Fitness; Polynomials; Response surface methodology; Response Surface Methodology; Cu2+ Removal; Activated Carbon; Durian Shell
• ISBN: 9783035711943; 3035711941
• ISSN: 1660-9336; 1662-7482; 1662-7482
• DOI: 10.4028/www.scientific.net/AMM.876.46

We investigated the use of durian shell-derived activated carbon (DSAC) for the removal of Cu2+. To determine the optimal condition for Cu2+ removal, the response surface methodology (RSM) was used to establish a second-order polynomial model with variables such as Cu2+ concentration (Ci), adsorbent dosage (dDSAC) and pH. With R2 = 0.9847 and P-value < 0.0001, the model was proved to be statistically significant. The RSM based confirmation test revealed that the removal of Cu2+ was maximum (99.6%) at optimal conditions: Ci = 61.6 mg/L, dDSAC = 5.0 g/L and pH = 5.2. Based on calculated R2, data fitness for adsorption isotherms were positioned as follows: Langmuir > Tempkin > Freundlich. In other words, monolayer adsorption was the most favorable behavior with maximum capacity of 76.92 mg/g from Langmuir model. Interestingly, DSAC was reused at least five times without a considerable decrease of Cu2+ removal efficiency. Therefore, durian shell can be used as a highly effective, reusable and promising raw material to fabricate the activated carbon.