KMnO_4改性稻壳、稻杆水热炭吸附染料的研究
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摘要
以稻壳、稻杆为原料,不同浓度KMnO4为水热溶剂,一步完成炭化与改性,并对其进行等电点测定,SEM、FTIR表征。通过静态吸附实验,探究KMnO4改性水热炭对阴、阳离子染料的吸附效果,以及初始染料浓度、样品投加量等的影响。通过吸附等温模型(Langmuir-Freundlich、Langmuir、Freundlich和Temkin)、动力学模型(准一级、准二级和Elovich动力学模型)、吸附机理(颗粒内扩散、Boyd外扩散模型)探究表明,Langmuir-Freundlich、准二级动力学和Elovich模型适合描述吸附过程,膜扩散速率和颗粒内扩散速率共同影响着吸附反应速率。
Modified hydrothermal carbon was prepared from rice husk and rice stalk by one-step carbonization and modification with KMnO4 solution of different concentration as hydrothermal solvent. Batch adsorption were conducted to study the effects of various parameters such as initial concentration,adsorbent dosage on adsorption. The adsorption capabilities of samples for cationic dyes and anionic dyes in wastewater are evaluated. Through the study of adsorption isotherm model( Langmuir-Freundlich,Langmuir,Freundlich and Temkin isotherms),kinetic model( pseudo-first-order,pseudo-second-order and Elovich models) and adsorption mechanism( intraparticle diffusion and Boyd models). It showed that Langmuir-Freundlich model,quasi-second-order kinetics and Elovich model are suitable for describing the adsorption process,and the diffusion rate of surface adsorption and the particle diffusion rate jointly affects the reaction rate of adsorption.
Modified hydrothermal carbon was prepared from rice husk and rice stalk by one-step carbonization and modification with KMnO4 solution of different concentration as hydrothermal solvent. Batch adsorption were conducted to study the effects of various parameters such as initial concentration,adsorbent dosage on adsorption. The adsorption capabilities of samples for cationic dyes and anionic dyes in wastewater are evaluated. Through the study of adsorption isotherm model( Langmuir-Freundlich,Langmuir,Freundlich and Temkin isotherms),kinetic model( pseudo-first-order,pseudo-second-order and Elovich models) and adsorption mechanism( intraparticle diffusion and Boyd models). It showed that Langmuir-Freundlich model,quasi-second-order kinetics and Elovich model are suitable for describing the adsorption process,and the diffusion rate of surface adsorption and the particle diffusion rate jointly affects the reaction rate of adsorption.
引文
[1] Sun Y,Chen Z,Wu G,et al. Characteristics of water quality of municipal wastewater treatment plants in China:implications for resources utilization and management[J].Journal of Cleaner Production,2016,131(9):1-9.
[2] Cheng H,Hu Y A,Zhao J F. Meeting China’s water shortage crisis:current practices and challenges[J]. Environmental Science&Technology,2009,43(2):240-244.
[3] Vadivelan V,Kumar K V. Equilibrium,kinetics,mechanism,and process design for the sorption of methylene blue onto rice husk[J]. Journal of Colloid&Interface Science,2005,286(1):90-100.
[4] Chiou M S,Ho P Y,Li H Y. Adsorption of anionic dyes in acid solutions using chemically cross-linked chitosan beads[J]. Dyes&Pigments,2004,60(1):69-84.
[5] Seow T W,Lim C K. Removal of dye by adsorption:A review[J]. International Journal of Applied Engineering Research,2016,11(4):2675-2679.
[6] Islam M A,Benhouria A,Asif M,et al. Methylene blue adsorption on factory-rejected tea activated carbon prepared by conjunction of hydrothermal carbonization and sodium hydroxide activation processes[J]. Journal of the Taiwan Institute of Chemical Engineers,2015,52(3):57-64.
[7] Kang S,Li X,Fan J,et al. Characterization of hydrochars produced by hydrothermal carbonization of lignin,cellulose,d-Xylose,and wood meal[J]. Industrial&Engineering Chemistry Research,2012,51(26):9023-9031.
[8] Funke A,Ziegler F. Hydrothermal carbonization of biomass:a summary and discussion of chemical mechanisms for process engineering[J]. Biofuels Bioproducts&Biorefining,2010,4(2):160-177.
[9] Titirici M M,Thomas A,Antonietti M. Back in the black:Hydrothermal carbonization of plant material as an efficient chemical process to treat the CO2problem[J]. New Journal of Chemistry,2007,31(6):787-789.
[10] Mustafa S,Dilara B,Nargis K,et al. Surface properties of the mixed oxides of iron and silica[J]. Colloids&Surfaces A Physicochemical&Engineering Aspects,2002,205(3):273-282.
[11] Imamoglu M,Tekir O. Removal of copper(II)and lead(II)ions from aqueous solutions by adsorption on activated carbon from a new precursor hazelnut husks[J]. Desalination,2008,228(1):108-113.
[12] Doˇgan M,Alkan M,Türkyilmaz A,et al. Kinetics and mechanism of removal of methylene blue by adsorption onto perlite[J]. Journal of Hazardous Materials,2004,109(1):141-148.
[13]刘超,杨永哲,宛娜.粉煤灰砖块对磷酸盐的吸附特性[J].环境工程学报,2014,8(5):1711-1717.
[14] Bulut E,zacar M,I·Ayhan S,engil. Adsorption of malachite green onto bentonite:Equilibrium and kinetic studies and process design[J]. Microporous&Mesoporous Materials,2008,115(3):234-246.
[15] Ming C S. Kinetics of the batch adsorption of methylene blue from aqueous solutions onto rice husk:effect of acidmodified process and dye concentration[J]. Desalination&Water Treatment,2012,37(1/2/3):200-214.
[16]谭婉玲,王志红,聂锦旭,等. Ti O2/CTS/ATP的制备及对Cr(Ⅵ)的吸附效能研究[J].工业水处理,2018(7):27-31.
[17] Vicente D,Melo D Q,De O T,et al. Evaluation of new chemically modified coconut shell adsorbents with tannic acid for Cu(II)removal from wastewater[J]. Journal of Applied Polymer Science,2014,131(18):9087-9097.
[18] Sangon S,Hunt A J,Attard T M,et al. Valorisation of waste rice straw for the production of highly effective carbon based adsorbents for dyes removal[J]. Journal of Cleaner Production,2018,172(12):145-149.
[19] Chowdhury Z,Hasan M R,Abdhamid S,et al. Catalytic pretreatment of biochar residues derived from lignocellulosic feedstock for equilibrium studies of manganese,Mn(II)cations from aqueous solution[J]. Rsc Advances,2014,5(9):6345-6356.
[20] Cao X,Harris W. Properties of dairy-manure-derived biochar pertinent to its potential use in remediation[J].Bioresource Technology,2010,101(14):5222-5228.
[21] Yu L,Luo Y M. The adsorption mechanism of anionic and cationic dyes by Jerusalem artichoke stalk-based mesoporous activated carbon[J]. Journal of Environmental Chemical Engineering,2014,2(1):220-229.
[22]张默,贾明云,卞永荣,等.不同温度玉米秸秆生物炭对萘的吸附动力学特征与机理[J].土壤学报,2015(5):1106-1115.
[2] Cheng H,Hu Y A,Zhao J F. Meeting China’s water shortage crisis:current practices and challenges[J]. Environmental Science&Technology,2009,43(2):240-244.
[3] Vadivelan V,Kumar K V. Equilibrium,kinetics,mechanism,and process design for the sorption of methylene blue onto rice husk[J]. Journal of Colloid&Interface Science,2005,286(1):90-100.
[4] Chiou M S,Ho P Y,Li H Y. Adsorption of anionic dyes in acid solutions using chemically cross-linked chitosan beads[J]. Dyes&Pigments,2004,60(1):69-84.
[5] Seow T W,Lim C K. Removal of dye by adsorption:A review[J]. International Journal of Applied Engineering Research,2016,11(4):2675-2679.
[6] Islam M A,Benhouria A,Asif M,et al. Methylene blue adsorption on factory-rejected tea activated carbon prepared by conjunction of hydrothermal carbonization and sodium hydroxide activation processes[J]. Journal of the Taiwan Institute of Chemical Engineers,2015,52(3):57-64.
[7] Kang S,Li X,Fan J,et al. Characterization of hydrochars produced by hydrothermal carbonization of lignin,cellulose,d-Xylose,and wood meal[J]. Industrial&Engineering Chemistry Research,2012,51(26):9023-9031.
[8] Funke A,Ziegler F. Hydrothermal carbonization of biomass:a summary and discussion of chemical mechanisms for process engineering[J]. Biofuels Bioproducts&Biorefining,2010,4(2):160-177.
[9] Titirici M M,Thomas A,Antonietti M. Back in the black:Hydrothermal carbonization of plant material as an efficient chemical process to treat the CO2problem[J]. New Journal of Chemistry,2007,31(6):787-789.
[10] Mustafa S,Dilara B,Nargis K,et al. Surface properties of the mixed oxides of iron and silica[J]. Colloids&Surfaces A Physicochemical&Engineering Aspects,2002,205(3):273-282.
[11] Imamoglu M,Tekir O. Removal of copper(II)and lead(II)ions from aqueous solutions by adsorption on activated carbon from a new precursor hazelnut husks[J]. Desalination,2008,228(1):108-113.
[12] Doˇgan M,Alkan M,Türkyilmaz A,et al. Kinetics and mechanism of removal of methylene blue by adsorption onto perlite[J]. Journal of Hazardous Materials,2004,109(1):141-148.
[13]刘超,杨永哲,宛娜.粉煤灰砖块对磷酸盐的吸附特性[J].环境工程学报,2014,8(5):1711-1717.
[14] Bulut E,zacar M,I·Ayhan S,engil. Adsorption of malachite green onto bentonite:Equilibrium and kinetic studies and process design[J]. Microporous&Mesoporous Materials,2008,115(3):234-246.
[15] Ming C S. Kinetics of the batch adsorption of methylene blue from aqueous solutions onto rice husk:effect of acidmodified process and dye concentration[J]. Desalination&Water Treatment,2012,37(1/2/3):200-214.
[16]谭婉玲,王志红,聂锦旭,等. Ti O2/CTS/ATP的制备及对Cr(Ⅵ)的吸附效能研究[J].工业水处理,2018(7):27-31.
[17] Vicente D,Melo D Q,De O T,et al. Evaluation of new chemically modified coconut shell adsorbents with tannic acid for Cu(II)removal from wastewater[J]. Journal of Applied Polymer Science,2014,131(18):9087-9097.
[18] Sangon S,Hunt A J,Attard T M,et al. Valorisation of waste rice straw for the production of highly effective carbon based adsorbents for dyes removal[J]. Journal of Cleaner Production,2018,172(12):145-149.
[19] Chowdhury Z,Hasan M R,Abdhamid S,et al. Catalytic pretreatment of biochar residues derived from lignocellulosic feedstock for equilibrium studies of manganese,Mn(II)cations from aqueous solution[J]. Rsc Advances,2014,5(9):6345-6356.
[20] Cao X,Harris W. Properties of dairy-manure-derived biochar pertinent to its potential use in remediation[J].Bioresource Technology,2010,101(14):5222-5228.
[21] Yu L,Luo Y M. The adsorption mechanism of anionic and cationic dyes by Jerusalem artichoke stalk-based mesoporous activated carbon[J]. Journal of Environmental Chemical Engineering,2014,2(1):220-229.
[22]张默,贾明云,卞永荣,等.不同温度玉米秸秆生物炭对萘的吸附动力学特征与机理[J].土壤学报,2015(5):1106-1115.