掺杂钴/铁的竹浆黑液活性炭去除印染废水中的孔雀石绿染料研究  

Removal of Malachite GreenDye in Dyeing Wastewater by Activated Carbon Derived from Bamboo Pulp Black Liquor Doped with Cobalt/Iron

作　　者：杨梦圆 郭荣辉[1] YANG Meng-yuan;GUO Rong-hui(College of Biomass Science and Engineering,Sichuan University,Chengdu 610065)

机构地区：[1]四川大学轻工科学与工程学院,四川成都610065

出　　处：《纺织科学与工程学报》2023年第2期32-36,共5页Journal of Textile Science & Engineering

基　　金：四川省科技计划项目(2020YFN0150)。

摘　　要：金属有机骨架(MOF)具有较高的比表面积和优良的催化性能,在印染废水中染料的吸附和降解领域具有广阔的应用前景。近年来,基于双金属MOF催化过硫酸氢钾(PMS)降解印染废水已成为去除孔雀石绿(MG)的一种日益流行的方法。得益于发达的孔隙结构和与MOF的协同作用,活性炭(AC)不仅为MOF的负载提供了稳定的载体,而且还可为印染废水的缓冲物,促进MG的去除。采用水热法在竹浆黑液(BPBL)衍生的竹浆黑液活性炭上成功锚定了一种钴铁双金属有机框架(CoFe-MOF),然后通过高温热解获得了负载钴铁单质和氧化物的活性炭(CoFe/AC)。结果表明,CoFe/AC在28 min时对MG的催化降解效率达到98.9%。Co与Fe的协同作用有效提高了CoFe/AC对MG的降解效率。双金属MOF与AC的结合为MG的去除提供了一种新的途径。Metal-organic framework(MOF)shows a higher specific surface area and excellent catalytic per-formance,which has broad application prospect in the field of adsorption and degradation of dyes in dyeing wastewater.In recent years,the degradation of dyeing wastewater by potassium peroxymonosulphate(PMS)cata-lyzed by bimetallic MOF has become an increasingly popular method for the removal of malachite green(MG).Activated carbon(AC)not only provides a stable carrier for the load of MOF,but also acts as a buffer for dyeing wastewater to promote the removal of MG due to the well-developed pore structure and the synergistic effect with MOF.A Co-Fe bimetallic organic framework(CoFe-MOF)was successfully anchored on the AC derived from bamboo pulp black liquor(BPBL)by hydrothermal method,and activated carbon(CoFe/AC)loaded with co-balt,iron and oxides was then obtained through high temperature pyrolysis.The results showed that catalytic deg-radation efficiency of the prepared CoFe/AC reached 98.9%within 28 min.The synergistic effect of Co and Fe effectively improved the degradation efficiency of MG by CoFe/AC.The combination of bimetallic MOF with AC provided a new way for the removal of MG.

关 键 词：竹浆黑液活性炭 印染废水 CoFe-MOF 孔雀石绿染料 过硫酸氢钾 

分 类 号：X791[环境科学与工程—环境工程]