小球藻藻渣生物炭对孔雀石绿的吸附研究  

Adsorption of Malachite Green by Chlorella Algal Residue Biochar

作　　者：王飞燕 张雅丽 罗珊珊[1] 陈智琴[1] 李文魁[1] Wang Feiyan;Zhang Ya li;Luo Shanshan;Chen Zhiqin;Li Wenkui(Jiangxi Key Laboratory of Materials Surface Engineering,Jiangxi Science&Technology Normal University,Nanchang 330000,China)

机构地区：[1]江西科技师范大学江西省材料表面工程重点实验室,江西南昌330000

出　　处：《广东化工》2023年第15期13-15,19,共4页Guangdong Chemical Industry

摘　　要：本文采用热解法制备小球藻藻渣生物炭,研究在控制氮气流速处理下的藻渣生物炭对孔雀石绿的吸附效果及机理。结果表明,小球藻藻渣生物炭对孔雀石绿的吸附随氮气流速的增加而增加,在氮气流速达到100 mL·min-1时吸附量达到最大值1505.6503 mg·g-1,比表面积达到1189.350 m2·g-1。吸附动力学实验中,小球藻藻渣生物炭对孔雀石绿的吸附更符合伪二阶模型,表明,吸附过程主要为物理吸附和化学吸附共同作用。因此以小球藻藻渣为原料制备的生物炭对于孔雀石绿具有较高吸附性能,有望成为去除水溶液中有机染料的一种有效的吸附剂。In this paper,Chlorella algal residue biochar was prepared by pyrolysis method.The adsorption effect and mechanism of algal residue biochar on malachite green were studied under the control of nitrogen flow rate.The results showed that the adsorption of malachite green by Chlorella algal residue biochar increased with the increase of nitrogen flow rate.When the nitrogen flow rate reached 100 mL·min-1,the adsorption capacity reached 1505.6503 mg·g-1 and the specific surface area reached 1189.350 m2·g-1.In the adsorption kinetics experiment,the adsorption of malachite green by Chlorella algal residue biochar is more consistent with the pseudo-second-order model,indicating that the adsorption process is mainly a combination of physical adsorption and chemical adsorption.Therefore,biochar prepared from Chlorella algal residue has high adsorption performance for malachite green and is expected to be an effective adsorbent for removing organic dyes from aqueous solutions.

关 键 词：小球藻藻渣 生物炭 孔雀石绿 吸附动力学 氮气流速 

分 类 号：TQ[化学工程]