塔里木大学学报2025，Vol.37Issue(2)：8-22,15.DOI:10.3969/j.issn.1009-0568.2025.02.002
新疆南疆灰枣叶生物质炭的制备及其吸附性能研究
Research on preparation and adsorption optimization of biochar from leaves of ziziphus jujuba cv.huizao in Southern Xinjiang
摘要
Abstract
Original biochar(YBC)was prepared from discarded ziziphus jujuba cv.huizao leaves in Southern Xinjiang,and modified with Na2 SO4 to yield modified biochar of ziziphus jujuba cv.huizao leaves(M-YBC).The utility of both biochars was explored in the treatment of simulated printing and dyeing wastewater simulated by methylene blue(MB).Comprehensive characterization of YBC and M-YBC was conducted employing Brunauer-Emmett-Teller nitrogen adsorption method(BET),scanning electron microscope-energy dispersive spectrometer(SEM-EDS),thermogravimetric analysis(TGA),X-ray photoelectron spectroscopy(XPS),raman spectroscopy(Raman),and X-ray diffraction(XRD)techniques.The results demonstrated that after treatment with Na2 SO4,the BET specific surface area(SBET)and porosity of the biochar increased with the carbonization degree.The SBET of M-YBC reached 419.03 m2/g,which led to a significant enhancement in its adsorption capacity for MB.The saturated adsorption capacity of M-YBC for MB reached 298.77 mg/g,which was 637.70%higher than YBC,and about 5 times that of commercial activated carbon(AC),and the difference is extremely significant(P<0.000 1).In addition,analyses of kinetic and isothermal adsorption models revealed a complex adsorption mechanism involving surface complexation,electrostatic attraction,and hydrogen bonding-mediated chemical adsorption.These findings offered valuable insights for the comprehensive utilization of waste resources from the jujube industry in Xinjiang and highlighted the potential of biochar in treating printing and dyeing wastewater.关键词
灰枣叶/生物质炭/硫酸钠改性/吸附Key words
ziziphus jujuba cv.huizao leaves/biochar/sodium sulfate modification/adsorption分类
化学工程引用本文复制引用
郑文宇,马国财,罗钧,蒋俊锋,陈朋,白红进..新疆南疆灰枣叶生物质炭的制备及其吸附性能研究[J].塔里木大学学报,2025,37(2):8-22,15.基金项目
新疆生产建设兵团南疆重点产业支撑计划项目(2017DB006) （2017DB006）
塔里木大学校长基金创新团队项目(TDZKCX202302) （TDZKCX202302）
