糠醛渣对水中甲基橙的吸附性能
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摘要
为了探究糠醛生产中的废料糠醛渣对水体中甲基橙的吸附性能和吸附机制,利用FT-IR(傅里叶变换红外光谱)和SEM(扫描电镜)对糠醛渣的结构特性进行表征,浅析糠醛渣对甲基橙的吸附机制;通过模拟试验,考察了吸附剂用量、pH、吸附时间和温度等因素对糠醛渣吸附甲基橙过程的影响;采用吸附动力学模型和吸附等温模型,进一步探讨了糖醛渣吸附机制.结果表明:①糠醛渣结构疏松多孔,表面具有丰富的官能团,有利于吸附.②糠醛渣能高效吸附水中甲基橙,在温度为293 K、pH为4～9、吸附剂用量为0. 2 g时,糠醛渣对400 mg/L的甲基橙吸附效果最好;吸附过程在60 min左右达到平衡,并且较好地符合准二级动力学模型(R~2=0. 999 9);吸附量随温度的升高而减少,表明该吸附过程为放热过程;在293 K时最大理论吸附量为54. 35 mg/g,吸附数据更符合Langmuir吸附等温模型(R~2=0. 993 3),表明糠醛渣对甲基橙的吸附主要为单层吸附.③糠醛渣可再生重复利用,吸附甲基橙后的糠醛渣用0. 1 mol/L氢氧化钠溶液进行解吸再生试验,第5次使用时对甲基橙仍然具有较好的吸附效果.研究显示,糠醛渣在室温条件下、较宽的p H范围内能快速高效地吸附水中的甲基橙,并且重复利用性好,是一种在偶氮染料废水处理中具有发展前景的廉价、可再生生物质吸附材料.
In order to explore the adsorption properties and mechanism of furfural residue to methyl orange in water,the structures of furfural residue were characterized by FTIR( fourier transform infrared spectroscopy) and SEM( scanning electron microscopy). Batch adsorption studies were carried out for the adsorption of methyl orange onto the furfural residue. The experimental parameters,including adsorbent dose,p H,contact time and temperature,were investigated. The adsorption mechanisms were discussed particularly by adsorption isotherms( Langmuir and Freundlich) and kinetics models( the pseudo-first and pseudo-second-order). The results showed that:( 1) The surface of furfural residue possessed porous structure and abundant functional groups which are beneficial to adsorption.( 2) The optimum adsorption conditions were achieved at 293 K,pH= 4-9,0. 2 g adsorbent dose and 60 min contact time with the initial concentration of methyl orange at 400 mg/L. The pseudo-second-order kinetic model( R~2= 0. 9999) fitted the methyl orange equilibrium adsorption data well. The adsorption capacities decreased with increasing temperatures,indicating that the methyl orange adsorption onto the furfural residue was an exothermic reaction. The maximum adsorption capacity of furfural residue for methyl orange was 54. 35 mg/g at293 K. The isothermal adsorption properties of methyl orange on the furfural residue were more consistent with the Langmuir isotherm model( R~2= 0. 9933),suggesting that the adsorption process of methyl orange by furfural residue was mainly a monolayer adsorption process.( 3) The furfural residue exhibited prominent recycling ability. The regenerated furfural residue could effectively adsorb methyl orange during five cycles of adsorption and regeneration. In conclusion,the furfural residue could absorb methyl orange quickly at room temperature and in a wide p H range,and had good reusability. Therefore,the furfural residue would be a low-cost and reusable adsorbent in azo dye wastewater treatment.
In order to explore the adsorption properties and mechanism of furfural residue to methyl orange in water,the structures of furfural residue were characterized by FTIR( fourier transform infrared spectroscopy) and SEM( scanning electron microscopy). Batch adsorption studies were carried out for the adsorption of methyl orange onto the furfural residue. The experimental parameters,including adsorbent dose,p H,contact time and temperature,were investigated. The adsorption mechanisms were discussed particularly by adsorption isotherms( Langmuir and Freundlich) and kinetics models( the pseudo-first and pseudo-second-order). The results showed that:( 1) The surface of furfural residue possessed porous structure and abundant functional groups which are beneficial to adsorption.( 2) The optimum adsorption conditions were achieved at 293 K,pH= 4-9,0. 2 g adsorbent dose and 60 min contact time with the initial concentration of methyl orange at 400 mg/L. The pseudo-second-order kinetic model( R~2= 0. 9999) fitted the methyl orange equilibrium adsorption data well. The adsorption capacities decreased with increasing temperatures,indicating that the methyl orange adsorption onto the furfural residue was an exothermic reaction. The maximum adsorption capacity of furfural residue for methyl orange was 54. 35 mg/g at293 K. The isothermal adsorption properties of methyl orange on the furfural residue were more consistent with the Langmuir isotherm model( R~2= 0. 9933),suggesting that the adsorption process of methyl orange by furfural residue was mainly a monolayer adsorption process.( 3) The furfural residue exhibited prominent recycling ability. The regenerated furfural residue could effectively adsorb methyl orange during five cycles of adsorption and regeneration. In conclusion,the furfural residue could absorb methyl orange quickly at room temperature and in a wide p H range,and had good reusability. Therefore,the furfural residue would be a low-cost and reusable adsorbent in azo dye wastewater treatment.
引文
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[30]胡小莲,杨林章,何世颖,等.Fe3O4/BC复合材料的制备及其吸附除磷性能[J].环境科学研究,2018,31(12):143-153.HU Xiaolian,YANG Linzhang,HE Shiying,et al.Preparation of Fe3O4/BC composite and its application for phosphate adsorptive removal[J].Research of Environmental Sciences,2018,31(12):143-153.
[31]CHEN Hao,ZHAO Jie,DAI Guoliang.Silkworm exuviae:a new non-conventional and low-cost adsorbent for removal of methylene blue from aqueous solutions[J].Journal of Hazardous Materials,2011,186(2/3):1320-1327.
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[2]王春颖,宋磊,王夔.活性炭中孔结构对双组分染料的竞争吸附[J].环境科学研究,2016,29(11):1679-1686.WANG Chunying,SONG Lei,WANG Kui.Competitive adsorption of two component dyes onto activated carbon with different mesopore volumes[J].Research of Environmental Sciences,2016,29(11):1679-1686.
[3]张滕,王勇梅,彭昌盛,等.染料废水的处理方法及研究进展[J].环保科技,2016,22(1):36-40.ZHANG Teng,WANG Yongmei,PENG Changsheng,et al.Review on the treatment of dye wastewater[J].Environmental Protection and Technology,2016,22(1):36-40.
[4]张华春,熊国臣.偶氮染料废水处理方法研究进展[J].染料与染色,2016,53(3):45-51.ZHANG Huachun,XIONG Guochen.Review on the treatment methods of azo dyes wastewater[J].Dyestuffs and Coloration,2016,53(3):45-51.
[5]BANERJEE P,SAU S,DAS P,et al.Optimization and modelling of synthetic azo dye wastewater treatment using graphene oxide nanoplatelets:characterization toxicity evaluation and optimization using artificial neural network[J].Ecotoxicology and Environmental Safety,2015,119:47-57.
[6]HOLKAR C R,JADHAV A J,PINJARI D V,et al.A critical review on textile wastewater treatments:possible approaches[J].Journal of Environmental Management,2016,182:351-366.
[7]TEHRANI-BAGHA A R,MAHMOODI N M,MENGER F M.Degradation of a persistent organic dye from colored textile wastewater by ozonation[J].Desalination,2010,260(1/2/3):34-38.
[8]SEN S K,RAUT S,BANDYOPADHYAY P,et al.Fungal decolouration and degradation of azo dyes:a review[J].Fungal Biology Reviews,2016,30(3):112-133.
[9]CHATTERJEE S,LEE D S,LEE M W,et al.Congo red adsorption from aqueous solutions by using chitosan hydrogel beads impregnated with nonionic or anionic surfactant[J].Bioresource Technology,2009,100(17):3862-3868.
[10]YAGUB M T,SEN T K,AFROZE S,et al.Dye and its removal from aqueous solution by adsorption:a review[J].Advances in Colloid and Interface Science,2014,209:172-184.
[11]RAFATULLAH M,SULAIMAN O,HASHIM R,et al.Adsorption of methylene blue on low-cost adsorbents:a review[J].Journal of Hazardous Materials,2010,177(1/2/3):70-80.
[12]LI Zichao,WANG Guoqiang,ZHAI Kuilu,et al.Methylene blue adsorption from aqueous solution by loofah sponge-based porous carbons[J].Colloids and Surfaces A:Physicochemical and Engineering Aspects,2018,538:28-35.
[13]ZHANG Shengli,WANG Zhikai,ZHANG Yulei,et al.Adsorption of methylene blue on organosolv lignin from rice straw[J].Procedia Environmental Sciences,2016,31:3-11.
[14]LIU Jiayang,WANG Zhixin,LI Hongyan,et al.Effect of solid state fermentation of peanut shell on its dye adsorption performance[J].Bioresource Technology,2018,249:307-314.
[15]ALJEBOREE A M,ALSHIRIFI A N,ALKAIM A F.Kinetics and equilibrium study for the adsorption of textile dyes on coconut shell activated carbon[J].Arabian Journal of Chemistry,2017,10:3381-3393.
[16]马春芳,时洋,刘建平,等.硫酸改性甘草废渣对结晶紫和甲基橙染料的吸附[J].工业水处理,2015,35(3):44-47.MA Chunfang,SHI Yang,LIU Jianping,et al.Adsorption for crystal violet and methyl orange dyes by sulfuric acid modified glycyrrhiza residue[J].Industrial Water Treatment,2015,35(3):44-47.
[17]LIN Keying,MA Baojun,SUN Yuan,et al.Comparison between liquid and solid acids catalysts on reducing sugars conversion from furfural residues via pretreatments[J].Bioresource Technology,2014,167:133-136.
[18]YU Hailong,XING Yang,LEI Fuhou,et al.Improvement of the enzymatic hydrolysis of furfural residues by pretreatment with combined green liquor and ethanol organosolv[J].Bioresource Technology,2014,167:46-52.
[19]陈小燕,孙媛,王东,等.糠醛渣对废水中Cr3+的吸附研究[J].宁夏大学学报(自然科学版),2011,32(3):262-265.CHEN Xiaoyan,SUN Yuan,WANG Dong,et al.Absorption of Cr3+from wastewater by furfural residue[J].Journal of Ningxia University(Natural Science Edition),2011,32(3):262-265.
[20]盛楷,任广军,高晓荣.糠醛渣对染料甲基紫的吸附行为[J].沈阳理工大学学报,2010,29(5):82-85.SHENG Kai,REN Guangjun,GAO Xiaorong.Study on adsorption of methyl violet from aqueous solution by furfural residue[J].Journal of Shenyang Ligong University,2010,29(5):82-85.
[21]王素芬,周凌云,苏东海.糠醛渣对亚甲基蓝的吸附性能和机理[J].湖北农业科学,2010,49(10):2422-2424.WANG Sufen,ZHOU Lingyun,SU Donghai.Study on the adsorption mechanism of furfural residue to methylene blue[J].Hubei Agricultural Sciences,2010,49(10):2422-2424.
[22]陈小燕,王振,王东,等.糠醛渣对苯酚吸附性能研究[J].环境科学与技术,2012,35(5):90-92.CHEN Xiaoyan,WANG Zhen,WANG Dong,et al.Adsorption of phenol by furfural residue[J].Environmental Science&Technology(China),2012,35(5):90-92.
[23]HAMEED B H.Evaluation of papaya seeds as a novel nonconventional low-cost adsorbent for removal of methylene blue[J].Journal of Hazardous Materials,2009,162(2/3):939-944.
[24]HAI Y,LI X,WU H,et al.Modification of acid-activated kaolinite with Ti O2and its use for the removal of azo dyes[J].Applied Clay Science,2015,114:558-567.
[25]CHEN Hao,ZHAO Jie,WU Junyong,et al.Isotherm,thermodynamic,kinetics and adsorption mechanism studies of methyl orange by surfactant modified silkworm exuviae[J].Journal of Hazardous Materials,2011,192(1):246-254.
[26]MAHDAVINIA G R,MASSOUDI A,BAGHBAN A,et al.Study of adsorption of cationic dye on magnetic kappa-carrageenan/PVAnanocomposite hydrogels[J].Journal of Environmental Chemical Engineering,2014,2(3):1578-1587.
[27]TAHIR N,BHATTI H N,IQBAL M,et al.Biopolymers composites with peanut hull waste biomass and application for crystal violet adsorption[J].International Journal of Biological Macromolecules,2017,94:210-220.
[28]方巧,林建伟,詹艳慧,等.溴化十六烷基吡啶改性沸石对水中甲基橙的吸附[J].环境工程学报,2014,8(6):2211-2217.FANG Qiao,LIN Jianwei,ZHAN Yanhui,et al.Adsorption of methyl orange from aqueous solution on cetylpyridinium bromide(CPB)-modified zeolite[J].Chinese Journal of Environmental Engineering,2014,8(6):2211-2217.
[29]TAHIR M A,BHATTI H N,IQBAL M,et al.Solar red and brittle blue direct dyes adsorption onto eucalyptus angophoroides bark:equilibrium,kinetics and thermodynamic studies[J].Journal of Environmental Chemical Engineering,2016,4(2):2431-2439.
[30]胡小莲,杨林章,何世颖,等.Fe3O4/BC复合材料的制备及其吸附除磷性能[J].环境科学研究,2018,31(12):143-153.HU Xiaolian,YANG Linzhang,HE Shiying,et al.Preparation of Fe3O4/BC composite and its application for phosphate adsorptive removal[J].Research of Environmental Sciences,2018,31(12):143-153.
[31]CHEN Hao,ZHAO Jie,DAI Guoliang.Silkworm exuviae:a new non-conventional and low-cost adsorbent for removal of methylene blue from aqueous solutions[J].Journal of Hazardous Materials,2011,186(2/3):1320-1327.
[32]MUNAGAPATI V S,KIM D.Adsorption of anionic azo dye congo red from aqueous solution by cationic modified orange peel powder[J].Journal of Molecular Liquids,2016,220:540-548.
[33]梁亚琴,张晓燕,闫煜东,等.Gemini表面活性剂改性有机蒙脱土的制备及其对甲基橙的吸附性能[J].化学通报,2016,79(12):1178-1183.LIANG Yaqin,ZHANG Xiaoyan,YAN Yudong,et al.Preparation of organo-montmorillonites modified by gemini surfactants and their adsorption capabilities for methyl orange[J].Chemistry Bulletin,2016,79(12):1178-1183.
[34]FAN Lulu,LUO Chuannan,SUN Min,et al.Preparation of novel magnetic chitosan/graphene oxide composite as effective adsorbents toward methylene blue[J].Bioresource Technology,2012,114:703-706.
[35]KARAER H,KAYA I·.Synthesis,characterization of magnetic chitosan/active charcoal composite and using at the adsorption of methylene blue and reactive blue4[J].Microporous and Mesoporous Materials,2016,232:26-38.
[36]GIANNAKOUDAKIS D A,KYZAS G Z,AVRANAS A,et al.Multiparametric adsorption effects of the reactive dye removal with commercial activated carbons[J].Journal of Molecular Liquids,2016,213:381-389.
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