长江大学学报（自然科学版）2025，Vol.22Issue(2)：117-126,10.
污泥基蓝藻生物炭的制备、表征及吸附性能研究
Preparation,characterization and adsorption properties of sludge-based cyanobacterial biochar
摘要
Abstract
In order to explore the differences of structure and properties of biochar(BCs)under different mixing ratios,as well as its adsorption mechanism and structure-activity relationship for Cr(Ⅵ),composite biochar was prepared by mixing cyanobacteria with sludge as base material.According to the mass ratios of sludge and Microcystis aeruginosa powder of 1∶2 and 2∶1(SMC102 and SMC201,respectively)was used.The structure and properties of raw materials and products were characterized by organic element analysis(EA),scanning electron microscopy(SEM)and fourier transform infrared spectroscopy(FT-IR)to investigate the pH and temperature effects on the adsorption of Cr(Ⅵ)on biochars.The results showed that sludge based cyanobacterial biochars prepared after admixture had characteristics of micropores and abundant organic functional groups,the overall adsorption rate of Cr(Ⅵ)adsorption by SMC102 and SMC201 was relatively slow,and the adsorption efficacy showed that SMC102＞SMC201,pH had a large effect on biochar adsorption of Cr(Ⅵ),and SMC102 and SMC201 decreased Cr(Ⅵ)adsorption by 61.8％and 66.7％when solution pH=pHpzc(isoelectric point),respectively.The process of Cr(Ⅵ)adsorption by SMC102 and SMC201 is an endothermic reaction,the temperature increase is conducive to the adsorption reaction,the adsorption process is non-spontaneous physical adsorption,the system chaos increases after the adsorption occurs and the energy increases,the elovich model fits better than the pseudo-first-order and pseudo-second-order models obviously,which indicates that the adsorption process occurs on the surface of heterogeneous materials.Meanwhile the adsorption process is also accompanied by some chemical reactions.关键词
污泥/铜绿微囊藻(Microcystis aeruginosa)/生物炭/吸附/Cr(Ⅵ)Key words
sludge/Microcystis aeruginosa/biochar/adsorption/Cr(Ⅵ)分类
化学化工引用本文复制引用
宋卫军,陈钱浩,王祎楠,谢妤..污泥基蓝藻生物炭的制备、表征及吸附性能研究[J].长江大学学报（自然科学版）,2025,22(2):117-126,10.基金项目
福建省南平市资源化学产业科技创新联合资助项目"竹基炭陶复合多孔材料的关键技术研发"(N2020Z006) （N2020Z006）
福建省自然科学基金项目"藻基质炭/过硫酸盐协同体系降解微囊藻毒素(MCs)及其作用机制"(2020J01417) （MCs）
福建省大学生创新性实验项目"蓝藻掺杂制备制备污泥基生物炭及其对微囊藻毒素的应用研究"(202010397033). （202010397033）
