改性玉米秸秆和玉米芯对Pb~(2+)吸附行为
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摘要
本研究致力于通过处理后的玉米秸秆玉米芯制备一种新型生物吸附剂来吸附室内PM2.5。将玉米秸秆和玉米芯经过二次酸式冷处理改性后制备新型生物吸附剂。建立Pb~(2+)浓度、渣滓加入量、吸附时间的二次回归正交旋转模型,选取最优吸附率组合条件。Freundlich吸附等温式多层分析和二级动力学较好阐述玉米秸秆和玉米芯对Pb~(2+)吸附行为。SEM观测、X能谱、FTIR分析及BET可知,玉米秸秆和玉米芯渣滓表面均疏松多孔,且羟基、羧基等基团对Pb~(2+)吸附起较好效果,此吸附过程是物理化学混合吸附。本实验通过改性的玉米芯和玉米秸秆作为新型吸附剂吸附室内PM2.5,达到以废治废,废物利用的效果。
This study was devoted to prepare a new bio-adsorbent to adsorb indoor PM2.5 through the treated corn stalks and cobs. Corn straws and corn cobs were modified by secondary hydrochloride cold treatment to prepare new type of bio-adsorbent. The quadratic regression orthogonal rotation model of Pb~(2+) concentration, dregs addition and adsorption time was constructed to determine the optimal combination condition for adsorption rate.Freundlich adsorption isotherm analysis and second-order kinetics equation could be used to describe the adsorption of corn straw and corn cob for Pb~(2+). Through SEM observation, X-ray energy spectrum, FTIR analysis and BET, it was found that the maize straw and corn cob dross surface was porous, and hydroxyl and carboxyl groups had good effect on Pb~(2+) adsorption. The adsorption process was a mixed physical and chemical adsorption proces.In this experiment, the modified corncob and corn stalk were used as new adsorbents to adsorb indoor PM2.5,achieving the effect of using the waste to treat waste and making good use of waste materials.
This study was devoted to prepare a new bio-adsorbent to adsorb indoor PM2.5 through the treated corn stalks and cobs. Corn straws and corn cobs were modified by secondary hydrochloride cold treatment to prepare new type of bio-adsorbent. The quadratic regression orthogonal rotation model of Pb~(2+) concentration, dregs addition and adsorption time was constructed to determine the optimal combination condition for adsorption rate.Freundlich adsorption isotherm analysis and second-order kinetics equation could be used to describe the adsorption of corn straw and corn cob for Pb~(2+). Through SEM observation, X-ray energy spectrum, FTIR analysis and BET, it was found that the maize straw and corn cob dross surface was porous, and hydroxyl and carboxyl groups had good effect on Pb~(2+) adsorption. The adsorption process was a mixed physical and chemical adsorption proces.In this experiment, the modified corncob and corn stalk were used as new adsorbents to adsorb indoor PM2.5,achieving the effect of using the waste to treat waste and making good use of waste materials.
引文
Cai J.L.,Huang Y.,and Zheng W.S.,2008,Advances in adsorption process and influencing factors of biosorbent for heavy metal contaminants in wastewater,Nongye Huanjing Kexue Xuebao(Journal of Agro-Enviroment Science),27(4):1297-1305(蔡佳亮,黄艺,郑维爽,2008,生物吸附剂对废水重金属污染物的吸附过程和影响因子研究进展,农业环境科学学报,27(4):1297-1305)
Chen Y.C.,and Hu B.Q.,1997,Corn cob powder adsorption method for the treatment of mercury-containing wastewater,Chongqing Huanjing Kexue(Chongqing Environmental Science),19(3):39-43(陈玉成,胡必琴,1997,玉米芯粉吸附法处理含汞废水的研究,重庆环境科学,19(3):39-43)
Dai S.M.,and Lv X.W.,2006,Research progress on water treatment technology of cadmium pollution,Anquan Yu Huanjing Gongcheng(Safety and Environmental Engineering),13(3):63-65(戴世明,吕锡武,2006,镉污染的水处理技术研究进展,安全与环境工程,13(3):63-65)
Gan Y.R.,1999,Biosorption of heavy metals,Huaxue Gongye Yu Gongcheng(Chemical Industry and Engineering),16(1):19-25(甘一如,1999,重金属的生物吸附,化学工业与工程,16(1):19-25)
Hu W.,and Chen Y.,2014,Study on biogas production characteristics of mixed anaerobic fermentation of multi-grainliqueurs and rice straw,Shipin Yu Fajiao Gongye(Food and Fermentation Industries),40(12):21-24(胡伟,陈豫,2014,多粮型白酒酒糟与水稻秸秆混合厌氧发酵产沼气特性研究,食品与发酵工业,40(12):21-24)
Khattri S.D.,and Singh M.K.,2009,Removal of malachite green from dye wastewater using neem sawdust by adsorption,Journal of Hazardous Materials,167(1-3):1089-1094
Li X.S.,Lu D.N.,and Liu Z.,2012,Research progress on adsorption and recovery of heavy metals from abandoned agroforestry biomass,Huagong Jinzhan(Chemical Industry and Engineering Progress),31(4):915-918(李晓森,卢滇楠,刘铮,2012,采用废弃农林生物质吸附和回收重金属研究进展,化工进展,31(4):915-918)
Shang Y.,Zhou J.,and Huang Y.,2011,Biosorbent and its application in the treatment of heavy metal wastewater,Hebei Huagong(Hebei Huagong),34(11):35-40(尚宇,周健,黄艳,2011,生物吸附剂及其在重金属废水处理中的应用进展,河北化工,34(11):35-40)
Tang Y.R.,Xu L.L.,and Li S.S.,2007,Modified orange peel adsorption of heavy metal Zn2+,Changchun Shifan Xueyuan Xuebao(Journal of Changchun Normal University),26(2):65-68(唐艳茹,徐林林,李斯思,2007,经修饰的桔子皮对重金属Zn2+的吸附研究,长春师范学院学报,26(2):65-68)
Xiang B.,and Li Y.J.,2007,Application of adsorption isotherm in the study of heavy metal adsorption properties,Youse Jinshu(Nonferrous Metals),59(1):77-80(相波,李义久,2007,吸附等温式在重金属吸附性能研究中的应用,有色金属,59(1):77-80)
Yang G.Y.,Zhang J.H.,Zou W.H.,and Han R.P.,2006a,Comparison of infrared spectra before and after adsorption of Cu3+on sycamore leaves,Guangpu Shiyanshi(Chinese Journal of Spectroscopy Laboratory),23(2):390-392(杨贯羽,张敬华,邹卫华,韩润平,2006a,梧桐树叶吸附铜离子前后红外光谱分析比较,光谱实验室,23(2):390-392)
Yang G.Y.,Zou W.H.,Xu Q.Z.,and Han R.P.,2006b,Differential thermal analysis and infrared spectroscopy of wheat hulls,Henan Kexue(Henan Science),24(1):41-43(杨贯羽,邹卫华,许庆增,韩润平,2006b,小麦壳的差热分析与红外光谱分析,河南科学,24(1):41-43)
Zhu Y.Y.,Jiang X.Y.,and Hu X.,2008,Application of biomass materials in heavy metal wastewater treatment,Huanjing Baohu Kexue(Environmental Science),3(1):9-12(朱媛媛,蒋新元,胡迅,2008,生物质材料在重金属废水处理中的应用,环境保护科学,3(1):9-12)
Chen Y.C.,and Hu B.Q.,1997,Corn cob powder adsorption method for the treatment of mercury-containing wastewater,Chongqing Huanjing Kexue(Chongqing Environmental Science),19(3):39-43(陈玉成,胡必琴,1997,玉米芯粉吸附法处理含汞废水的研究,重庆环境科学,19(3):39-43)
Dai S.M.,and Lv X.W.,2006,Research progress on water treatment technology of cadmium pollution,Anquan Yu Huanjing Gongcheng(Safety and Environmental Engineering),13(3):63-65(戴世明,吕锡武,2006,镉污染的水处理技术研究进展,安全与环境工程,13(3):63-65)
Gan Y.R.,1999,Biosorption of heavy metals,Huaxue Gongye Yu Gongcheng(Chemical Industry and Engineering),16(1):19-25(甘一如,1999,重金属的生物吸附,化学工业与工程,16(1):19-25)
Hu W.,and Chen Y.,2014,Study on biogas production characteristics of mixed anaerobic fermentation of multi-grainliqueurs and rice straw,Shipin Yu Fajiao Gongye(Food and Fermentation Industries),40(12):21-24(胡伟,陈豫,2014,多粮型白酒酒糟与水稻秸秆混合厌氧发酵产沼气特性研究,食品与发酵工业,40(12):21-24)
Khattri S.D.,and Singh M.K.,2009,Removal of malachite green from dye wastewater using neem sawdust by adsorption,Journal of Hazardous Materials,167(1-3):1089-1094
Li X.S.,Lu D.N.,and Liu Z.,2012,Research progress on adsorption and recovery of heavy metals from abandoned agroforestry biomass,Huagong Jinzhan(Chemical Industry and Engineering Progress),31(4):915-918(李晓森,卢滇楠,刘铮,2012,采用废弃农林生物质吸附和回收重金属研究进展,化工进展,31(4):915-918)
Shang Y.,Zhou J.,and Huang Y.,2011,Biosorbent and its application in the treatment of heavy metal wastewater,Hebei Huagong(Hebei Huagong),34(11):35-40(尚宇,周健,黄艳,2011,生物吸附剂及其在重金属废水处理中的应用进展,河北化工,34(11):35-40)
Tang Y.R.,Xu L.L.,and Li S.S.,2007,Modified orange peel adsorption of heavy metal Zn2+,Changchun Shifan Xueyuan Xuebao(Journal of Changchun Normal University),26(2):65-68(唐艳茹,徐林林,李斯思,2007,经修饰的桔子皮对重金属Zn2+的吸附研究,长春师范学院学报,26(2):65-68)
Xiang B.,and Li Y.J.,2007,Application of adsorption isotherm in the study of heavy metal adsorption properties,Youse Jinshu(Nonferrous Metals),59(1):77-80(相波,李义久,2007,吸附等温式在重金属吸附性能研究中的应用,有色金属,59(1):77-80)
Yang G.Y.,Zhang J.H.,Zou W.H.,and Han R.P.,2006a,Comparison of infrared spectra before and after adsorption of Cu3+on sycamore leaves,Guangpu Shiyanshi(Chinese Journal of Spectroscopy Laboratory),23(2):390-392(杨贯羽,张敬华,邹卫华,韩润平,2006a,梧桐树叶吸附铜离子前后红外光谱分析比较,光谱实验室,23(2):390-392)
Yang G.Y.,Zou W.H.,Xu Q.Z.,and Han R.P.,2006b,Differential thermal analysis and infrared spectroscopy of wheat hulls,Henan Kexue(Henan Science),24(1):41-43(杨贯羽,邹卫华,许庆增,韩润平,2006b,小麦壳的差热分析与红外光谱分析,河南科学,24(1):41-43)
Zhu Y.Y.,Jiang X.Y.,and Hu X.,2008,Application of biomass materials in heavy metal wastewater treatment,Huanjing Baohu Kexue(Environmental Science),3(1):9-12(朱媛媛,蒋新元,胡迅,2008,生物质材料在重金属废水处理中的应用,环境保护科学,3(1):9-12)