生物炭固定化微生物菌剂的制备及其对含芘废水的处理OA

An immobilized microbial agent was prepared via a co-growth adsorption immobilization method with coconut shell biochar as the carrier and subsequently applied for the treatment of simulated pyrene-containing wastewater.The preparation conditions of the immobilized microbial agent were optimized,and the influences of immobilized microbial agent dosage and wastewater pH on the removal rate of pyrene were investigated.The results show that under the optimal conditions of a biochar firing temperature of 700℃,a biochar mass fraction of 3.0%,and an adsorption and immobilization time of 12-24 h,the immobilization rate of microbial agent can reach 61.3%-68.4%.The immobilized microbial agent shows a good treatment effect on pyrene-containing wastewater.Under the conditions of a pyrene mass concentration of 20 mg/L,a wastewater pH of 6.0-9.0,and an immobilized microbial agent dosage of 30 g/L,after 3 d of reaction,the removal rate of pyrene can reach 90.6%-94.2%.