菌糠基富钙生物炭对水中孔雀石绿的吸附性能  

Adsorption properties of malachite green in water by mushroom residue-based calcium-rich biochar

作　　者：王艺璇 蔡明彤 毛鑫磊 赵佳乐 马久慧 滕洪辉[1,2] WANG Yi-xuan;CAI Ming-tong;MAO Xin-lei;ZHAO Jia-le;MA Jiu-hui;TENG Hong-hui(College of Engineering,Jilin Normal University,Siping 136000,China;Key Laboratory of Environmental Materials and Pollution Control,the Education Department of Jilin Province,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学工程学院,吉林四平136000 [2]吉林师范大学吉林省高校环境材料与污染控制重点实验室,吉林四平136000

出　　处：《化学研究与应用》2024年第12期2894-2905,共12页Chemical Research and Application

基　　金：国家青年科学基金项目(51708250)资助;吉林省科技厅项目(YDZJ202201ZYTS368)资助;吉林省教育厅项目(JJKH20230518KJ)资助;青年教师科研能力培育提升计划项目(0521805)资助。

摘　　要：以菌糠为原料,选用廉价且环保的蟹壳为钙源,采用共沉淀法制备磁改性菌糠基富钙生物炭(Fe_(2)O_(3)/CSSC),并用于孔雀石绿(MG)的吸附研究。利用SEM、FTIR等技术进行表征并探讨其吸附机理。结果表明,Fe_(2)O_(3)/CS-SC对MG的去除率随吸附时间、吸附剂用量和初始pH的增加而增加,随MG初始浓度的增加而降低。吸附过程是自发和吸热的,表面扩散和颗粒内扩散同时进行,且符合准二级动力学和Langmuir吸附等温线模型。另外,Fe_(2)O_(3)/CS-SC具有良好的磁分离特质及再生稳定性。The magnetic modified calcium-rich biochar(Fe_(2)O_(3)/CS-SC)was prepared by co-precipitation method from fungus bran as raw material and cheap and environmentally friendly crab shell as calcium source,and was used for the adsorption of malachite green(MG).The adsorption mechanism was studied by SEM and FTIR.The results showed that the removal rate of MG from Fe_(2)O_(3)/CS-SC increased with the increase of adsorption time,adsorbent dosage and initial pH,and decreased with the increase of in-itial MG concentration.The adsorption process is spontaneous and endothermic,and both surface diffusion and intra diffusion occur simultaneously,which conforms to the quasi-second-order kinetics and Langmuir adsorption isotherm model.In addition,Fe_(2)O_(3)/CS-SC has good magnetic separation characteristics and regeneration stability.

关 键 词：菌糠 富钙 改性 吸附 孔雀石绿 

分 类 号：O614.4[理学—无机化学]