摘要：Abstract
Thermal‐chemical treatment of waste rubber tires as an adsorbent has attracted considerable attention in the last few years. However, the main drawback associated with such tire‐derived adsorbents is their pyrolysis process of preparation, which consumes more energy and does harm to the environment. In this work, modified ground tire rubber was prepared merely by chemical treatment and used for the removal of Pb2+ from aqueous solution. The surface chemical property of ground tire rubber was changed through the reaction with bromine, followed by a lysine reaction to develop the carboxylic and amino groups on the rubber. The modified ground tire rubber was characterized by FTIR, SEM, LDPSA, and X‐ray diffraction. Experimental parameters, such as pH, adsorbent dosage, and contact time on the removal of Pb2+ from aqueous solution were investigated. Under optimal conditions, the modified ground tire rubber presents an excellent removal efficiency of 92 % with an adsorbent dosage of 1.0 g/L. Additionally, the adsorption kinetic behaviour of the process was discussed and the pseudo‐second‐order model was found to fit well to the experimental data.
The surface chemical property of ground tire rubber (GTR) was changed through the reaction with bromine, followed by a lysine reaction to develop the carboxylic and amino groups. The modified ground tire rubber (MGTR) works by complexation with Pb2+ in the aqueous solution.
