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以Fe_3O_4磁性粒子为载体固定简青霉菌粉,制备出一种固定化简青霉生物吸附剂,用于Cd~(2+)-苯酚复合污染废水的吸附研究。考察了pH、温度、时间对吸附效果的影响。结果表明,pH对吸附效果有较为明显的影响,适宜pH为5,适宜温度在40℃;吸附Cd~(2+)的平衡时间是20 min左右,而吸附苯酚的平衡时间大约是在48 h左右。采用1mol/L的HCl溶液反复解吸5次后,Cd~(2+)和苯酚的解吸率分别达到92.13%、91.34%,解吸后吸附剂对Cd~(2+)和苯酚仍表现出较好的吸附去除能力。
The immobilized Penicillium funiculosum was immobilized on Fe_3O_4 magnetic particles as carrier, and a kind of immobilized penicillium biosorbent was prepared for the adsorption of Cd ~ (2 +) - phenol complex wastewater. The effects of pH, temperature and time on the adsorption were investigated. The results showed that pH had a significant effect on the adsorption effect. The optimum pH was 5, the optimum temperature was 40 ℃, the equilibrium time for Cd 2+ adsorption was about 20 min, and the equilibrium time for adsorption of phenol was about 48 h about. The desorption rate of Cd 2+ and phenol reached 92.13% and 91.34% respectively after desorbing with 1 mol / L HCl solution for 5 times. After desorption, the desorption of Cd 2+ and phenol by phenol still showed better performance Adsorption removal ability.