改性香蕉皮粉末和香蕉皮活性炭吸附水中甲氰菊酯的对比研究
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摘要
为探讨农业固体废弃物的有效资源化,以香蕉皮为原料,分别制备改性香蕉皮粉末(modified banana peel powder,MBP)和香蕉皮活性炭(banana peel activated carbon,BAC)用以吸附水中的甲氰菊酯。通过静态吸附实验对比两种材料对水中甲氰菊酯的吸附效果。扫描电镜、BET法测定比表面积及孔径分析表征结果表明,BAC比MBP有更大的比表面和更发达的孔道结构;傅里叶变换红外光谱表征结果显示,MBP比BAC具有更多的表面官能团结构。静态吸附实验结果显示:在pH为4～9范围内,MBP对甲氰菊酯的吸附容量和吸附速率均低于BAC。两种材料吸咐甲氰菊酯的最佳pH为7,在此条件下,MBP和BAC的饱和吸附量分别为58.215μg/g和91.005μg/g;等温拟合结果显示:两种材料吸附水中甲氰菊酯的吸附均倾向于Langmuir等温模型,说明其吸附倾向于化学吸附; Freundlich等温拟合结果显示:香蕉皮活性炭具有更低的1/n值,说明其吸附甲氰菊酯更容易发生;吸附动力学模型拟合结果显示:改性香蕉皮粉末及活性炭对甲氰菊酯的吸附更倾向于准二阶动力学模型。研究结果表明,BAC吸附水中甲氰菊酯的效果优于MBP,同时,MBP作为一种低成本生物吸附材料,对水中的甲氰菊酯也具备一定的吸附能力,且属于容易发生的吸附。
In order to investigate the recycling of agricultural solid wastes,modified banana peel powder(MBP)and banana peel activated carbon(BAC)were used to adsorb fenpropathrin in water.Their adsorbing performance was compared through static adsorption experiment.It is showed that BAC is superior to MBP for surface speciation and pore structure by scanning electron microscope analysis,surface area analyzer and pore analysis(BET).The Fourier-transform infrared spectroscopy shows that MBP contains more functional groups than BAC.The results of static adsorption experiment show that the adsorption capacity and rate of MBP is inferior to BAC when pH range is 6～9,and both of optimal adsorption pH of these two materials are 7.The saturation adsorption capacity under experiment conditions of MBP and BAC are 58.215μg/g and 91.005μg/g,respectively.The results of isothermal fitting show that the adsorption mechanism of two material tend to chemical procedure,and BAC has lower value of 1/n,which indicates that BAC is easier to adsorb fenpropathrin than MBP.The adsorption kinetic studies show that both the fenpropathrin adsorption of MBP and BAC are more inclined to the pseudo-second-order model.This study indicates that BAC is superior to MBP for adsorption fenpropathrin.Meanwhile,MBP is easy to adsorb fenpropathrin in water as a kind of inexpensive bio-material.
In order to investigate the recycling of agricultural solid wastes,modified banana peel powder(MBP)and banana peel activated carbon(BAC)were used to adsorb fenpropathrin in water.Their adsorbing performance was compared through static adsorption experiment.It is showed that BAC is superior to MBP for surface speciation and pore structure by scanning electron microscope analysis,surface area analyzer and pore analysis(BET).The Fourier-transform infrared spectroscopy shows that MBP contains more functional groups than BAC.The results of static adsorption experiment show that the adsorption capacity and rate of MBP is inferior to BAC when pH range is 6～9,and both of optimal adsorption pH of these two materials are 7.The saturation adsorption capacity under experiment conditions of MBP and BAC are 58.215μg/g and 91.005μg/g,respectively.The results of isothermal fitting show that the adsorption mechanism of two material tend to chemical procedure,and BAC has lower value of 1/n,which indicates that BAC is easier to adsorb fenpropathrin than MBP.The adsorption kinetic studies show that both the fenpropathrin adsorption of MBP and BAC are more inclined to the pseudo-second-order model.This study indicates that BAC is superior to MBP for adsorption fenpropathrin.Meanwhile,MBP is easy to adsorb fenpropathrin in water as a kind of inexpensive bio-material.
引文
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[18]SHIFERA L,SIRAJ K,YIFRUA.Adsorption of lead(Ⅱ)and chromium(Ⅵ)onto activated carbon prepared from pineapple peel:Kinetics and thermodynamic study[J].Indian Journal of Chemical Technology,2017,24:145-152.
[19]OBEROI H S,SANDHU S K,VADLANI P V.Statistical optimization of hydrolysis process for banana peels using cellulolytic and pectinolytic enzymes[J].Food and Bioproducts Processing,2012,90(2):257-365.
[20]平巍,李波,董建丰,等.生物质改性吸附材料的制备工艺优化及对氨氮的吸附特性[J].农业环境科学学报,2017,36(12):2521-2526.
[21]高俊敏,马健,高旭,等.混凝-活性炭吸附工艺去除水中甲氰菊酯农药[J].重庆大学学报,2015,38(6):52-57,158.
[22]HASEGAWA G,AOKI M,KANAMORI K,et al.Monolithic electrode for electric double-layer capacitors based on macro/meso/microporous S-Containing activated carbon with high surface area[J].Journal of Materials Chemistry,2011,21(7):2060-2063.
[23]GUPTA H,GUPTA B.Adsorption of polycyclic aromatic hydrocarbons on banana peel activated carbon[J].Desalination and Water Treatment,2016,57:9498-9509.
[2]龚得春.梁滩河流域拟除虫菊酯农药多介质残留和环境行为研究[D].重庆:重庆大学,2013.
[3]张征,李今,梁威,等.拟除虫菊酯杀虫剂对水生态系统的毒性作用[J].长江流域资源与环境,2006,15(1):125-129.
[4]WESTON D P,LYDY M J.Urban and agricultural sources of pyrethroid insecticides to the Sacramento-San Joaquin Delta of California[J].Environmental Science&Technology,2010,44(5):1833-1840.
[5]FEO M L,ELJARRAT E,BARCELóD,et al.Determination of pyrethroid insecticides in environmental samples[J].TrAC Trends in Analytical Chemistry,2010,29(7):692-705.
[6]罗华.一起甲氰菊酯污染某镇自来水厂水源的调查报告[J].中国农村卫生事业管理,2015,35(2):191-192.
[7]伏广龙,马卫兴,顾晓晨.甲氰菊酯农药废水处理的实验[J].农药,2011,58(8):567-569.
[8]徐慧,蒋栋磊,张银志,等.臭氧降解8种蔬菜中农药残留研究[J].食品工业科技,2012,33(22):75-77.
[9]赵华,李康,徐浩,等.甲氰菊酯农药环境行为研究[J].浙江农业学报,2004,16(5):299-304.
[10]张放.2005-2014年全球香蕉与芭蕉生产变化分析[J].中国果业信息,2017,34(5):24-35.
[11]张冠鹏.伊犁温室香蕉引种栽培技术[J].农村科技,2016(52):52-53.
[12]李仁茂,陈蓉,萧志成.粤西地区四种香蕉皮的成分分析[J].湛江师范学院学报,2001,22(6):42-45.
[13]王小芬,韦万兴,张晓霞,等.改性纤维素吸附剂的合成及其对铜离子的吸附[J].环境工程学报,2015,9(4):1553-1558.
[14]童希源,李甘.纤维素的改性及在废水处理中的应用研究[J].广东蚕业,2017,51(3):25.
[15]SUHAS,GUPTA V K,CAROTT P J M,et al.Cellulose:A review as natural,modified and activated carbon adsorbent[J].Bioresource Technology,2016,216:1066-1076.
[16]HOKKANEN S,BHATNAGAR A,SILLANP??M.A review on modification methods to cellulose-based adsorbents to improve adsorption capacity[J].Water Research,2016,91:156-173.
[17]何昭菊,陆燕勤,张华,等.柚子皮活性炭对刚果红吸附性能试验[J].桂林理工大学学报,2015,35(1):147-151.
[18]SHIFERA L,SIRAJ K,YIFRUA.Adsorption of lead(Ⅱ)and chromium(Ⅵ)onto activated carbon prepared from pineapple peel:Kinetics and thermodynamic study[J].Indian Journal of Chemical Technology,2017,24:145-152.
[19]OBEROI H S,SANDHU S K,VADLANI P V.Statistical optimization of hydrolysis process for banana peels using cellulolytic and pectinolytic enzymes[J].Food and Bioproducts Processing,2012,90(2):257-365.
[20]平巍,李波,董建丰,等.生物质改性吸附材料的制备工艺优化及对氨氮的吸附特性[J].农业环境科学学报,2017,36(12):2521-2526.
[21]高俊敏,马健,高旭,等.混凝-活性炭吸附工艺去除水中甲氰菊酯农药[J].重庆大学学报,2015,38(6):52-57,158.
[22]HASEGAWA G,AOKI M,KANAMORI K,et al.Monolithic electrode for electric double-layer capacitors based on macro/meso/microporous S-Containing activated carbon with high surface area[J].Journal of Materials Chemistry,2011,21(7):2060-2063.
[23]GUPTA H,GUPTA B.Adsorption of polycyclic aromatic hydrocarbons on banana peel activated carbon[J].Desalination and Water Treatment,2016,57:9498-9509.