限氧裂解法粟米秸秆生物炭对固液体系中Pb~(2+)的吸附特性与机理研究
|
摘要
为探讨固液体系中限氧裂解法制备粟米秸秆生物炭对Pb~(2+)的吸附特性与机理,通过静态批量试验研究了pH、初始离子浓度、吸附剂投加量、吸附时间对粟米秸秆炭吸附Pb~(2+)特性的影响,并通过热力学分析其吸附作用机理。结果表明,粟米秸秆炭对Pb~(2+)吸附在pH为5.5～6.0范围内效果最好,其吸附能力与温度和离子浓度正相关,与吸附剂投加量负相关。粟米秸秆炭对Pb~(2+)吸附反应满足Lagergren准二级动力学模型,Langmuir模型拟合等温吸附过程结果较好。扫描电镜和傅里叶红外光谱对材料吸附前后分析表明,粟米秸秆在炭化和吸附Pb~(2+)后的表面形态发生改变,羟基和羧基等表面活性基团在该吸附过程中起主要作用。
In order to explore the adsorption characteristics and mechanism of Pb~(2+) on millet straw biochar prepared by limited oxygen pyrolysis in solid-liquid system, static batch experiments were performed to evaluate the effects of pH, initial concentration of Pb2 +,adsorbent concentration, contact time on Pb2 +adsorption. The mechanism of adsorption was analyzed based on thermodynamics. The results showed that the maximum removal rate appeared at pH 5.5～6.0, and adsorption quantity of millet straw was positively correlated with temperature and initial concentration of Pb~(2+) , and negatively correlated with adsorbent dosage.The experimental data fitted well with the Pseudo-second-order model. The adsorption equilibrium data and the adsorption process fitted well with Langmuir isotherms model.Scanning electron microscopy revealed that the surface morphologicalof millet straw changed after pyrolysis or absorption. The Fourier transform infrared spectroscopy(FTIR) spectra analysis showed that the possible functional groups responsible for Pb~(2+) binding were hydroxyl and carboxyl.
In order to explore the adsorption characteristics and mechanism of Pb~(2+) on millet straw biochar prepared by limited oxygen pyrolysis in solid-liquid system, static batch experiments were performed to evaluate the effects of pH, initial concentration of Pb2 +,adsorbent concentration, contact time on Pb2 +adsorption. The mechanism of adsorption was analyzed based on thermodynamics. The results showed that the maximum removal rate appeared at pH 5.5～6.0, and adsorption quantity of millet straw was positively correlated with temperature and initial concentration of Pb~(2+) , and negatively correlated with adsorbent dosage.The experimental data fitted well with the Pseudo-second-order model. The adsorption equilibrium data and the adsorption process fitted well with Langmuir isotherms model.Scanning electron microscopy revealed that the surface morphologicalof millet straw changed after pyrolysis or absorption. The Fourier transform infrared spectroscopy(FTIR) spectra analysis showed that the possible functional groups responsible for Pb~(2+) binding were hydroxyl and carboxyl.
引文
[1]DAL IA K M, MOHAMAD AMS, WAN AWAK. Langmuir modelapplication on solid-liquidadsorption using agriculturalwastes:Envi-ronmental applicationreview[J].Journal of Purity, Utility Reaction andEnvironment, 2012, 1(4):200-229.
[2]SAKA C, OMER S3., KUCUK MM. Applications on agriculturaland forest waste adsorbents for the removal of lead(II)from contam-inated waters[J]. International Journal of Environmental Science&Technology, 2012, 9(2):379-394.
[3]GONEN F. Adsorption study on orange peel:Removal of Ni(II)ions from aqueous solution[J]. African Journal of Biotechnology,2012, 11(5):1250-1258.
[4]MOHAMMAD R M, ZOHREH F, BAHAREH T, et al. Adsorptionof Lead and Cadmium from Aqueous Solution by Using AlmondShells[J]. Water Air Soil Pollut, 2009, 10:1-9.
[5]谭光群,袁红雁,刘勇,等.麦秆对重金属Pb2+和Cr3+吸附性能的研究[J].化学研究与应用,2011,23(7):840-846.
[6]周菁菁.茶叶对废水中铅锌镉离子的吸附性能研究[D].湖南大学,2013.
[7]谷亚昕.花生壳粉吸附模拟废水中Cd2+、Pb2+的研究[J].安徽农业科学,2008,36(36):16126-16128.
[8]艾莲,罗学刚,林晓艳,等.向日葵秸秆对U(VI)和Pb(II)的选择吸附性能及机理研究[J].林产化学与工业,2014,34(2):9-16.
[9]杨军,张玉龙,杨丹,等.稻秸对Pb2+的吸附特性[J].环境科学研究,2012,25(7):815-819.
[10]邹继颖,孙大志,赵家伟,等.玉米秸秆生物炭对重金属镉、铅的吸附性能[J].北华大学学报(自然科学版), 2018, 19(4):536-539.
[11]KYZAS G Z, KOSTOGLOU M. Green Adsorbents for Wastewa-ters:A Critical Review[J]. Materials, 2014, 7(1):333-364.
[12]李璐,杨朝晖,孙珮石,等.基于响应面优化条件下柚皮对Pb2+的吸附[J].环境科学学报,2009,29(7):1426-1433.
[13]袁健思,胡祖明,于俊荣,等.聚偏氟乙烯分离膜的表面改性和对重金属离子的吸附性能研究[J].化工新型材料, 2018, 46(6):123-127.
[14]孔爱群.面向水体中重金属离子吸附的壳聚糖吸附材料的制备及工艺研究[D].天津工业大学, 2018.
[15]Jiang D, Amano Y, Machida M. Removal and recovery of phos-phate from water by a magnetic Fe 3 O 4@ASC adsorbent[J]. Jour-nal of Environmental Chemical Engineering, 2017, 5(5):4229-4238.
[16]张小玲,乔玉辉,李花粉.玉米秸秆生物炭对溶液体系中不同重金属离子的吸附特性[J].中国农业大学学报, 2018, 23(5):15-21.
[17]张倩,柳超颖,范子皙,等.黍糠、菜籽饼生物炭的制备及其对重金属镉(Cd~(2+))的吸附[J].安全与环境学报, 2018, 18(2):664-670.
[18]朱健,吴庆定,王平,等.经典等温吸附模型在重金属离子/硅藻土体系中的应用及存在问题[J].环境科学, 2013, 34(11):4341-4348.
[19]Ji Z, Feng C, Wu X, et al. Composite of biomass and lead re-sistent Aspergillus oryzae for highly efficient aqueous phase Pb(II)adsorption[J]. Environmental Progress&Sustainable Energy, 2017,36(6):1659-1666.
[20]HASHEM A, El-KHIRAIGY K. Bioadsorption of Pb(II)ontoAnethum graveolens from Contaminated Wastewater:Equilibrium andKinetic Studies[J]. Journal of Environmental Protection, 2013, 04(01):108-119.
[21]HUANG LZ, ZENG GM, HUANG DL, et al. Adsorption of lead(I-I)from aqueous solution onto Hydrilla verticillata.[J]. Biodegradation,2009, 20(5):651-660.
[22]GUPTA A, YADAV R, DEVI A P. Removal of hexavalentchromium using activated coconut shell and activated coconut coir aslow cost adsorbent.[J]. Iioab Journal, 2011, 2(3):8-12.
[23]冀泽华,吴晓芙,李芸,等.水溶液重金属离子在蛭石上的动态吸附行为与化学势变[J].环境化学,2015,34(11):2109-2117.
[24]计海洋,汪玉瑛,吕豪豪,等.不同炭化温度制备的蚕丝被废弃物生物炭对重金属Cd~(2+)的吸附性能[J].应用生态学报, 2018,29(4):1328-1338.
[25]Tran H N, You S J, Hosseini-Bandegharaei A, et al. Mistakesand inconsistencies regarding adsorption of contaminants from aque-ous solutions:A critical review[J]. Water Research, 2017, 120(1):88-116.
[26]戴佩彬.基于响应曲面分析的生物炭制备及其对重金属吸附作用研究[J].农业科技与装备, 2018(2):47-49.
[27]王晓佩,薛英文,程晓如,等.生物炭吸附去除重金属研究综述[J].中国农村水利水电, 2013(12):51-56.
[2]SAKA C, OMER S3., KUCUK MM. Applications on agriculturaland forest waste adsorbents for the removal of lead(II)from contam-inated waters[J]. International Journal of Environmental Science&Technology, 2012, 9(2):379-394.
[3]GONEN F. Adsorption study on orange peel:Removal of Ni(II)ions from aqueous solution[J]. African Journal of Biotechnology,2012, 11(5):1250-1258.
[4]MOHAMMAD R M, ZOHREH F, BAHAREH T, et al. Adsorptionof Lead and Cadmium from Aqueous Solution by Using AlmondShells[J]. Water Air Soil Pollut, 2009, 10:1-9.
[5]谭光群,袁红雁,刘勇,等.麦秆对重金属Pb2+和Cr3+吸附性能的研究[J].化学研究与应用,2011,23(7):840-846.
[6]周菁菁.茶叶对废水中铅锌镉离子的吸附性能研究[D].湖南大学,2013.
[7]谷亚昕.花生壳粉吸附模拟废水中Cd2+、Pb2+的研究[J].安徽农业科学,2008,36(36):16126-16128.
[8]艾莲,罗学刚,林晓艳,等.向日葵秸秆对U(VI)和Pb(II)的选择吸附性能及机理研究[J].林产化学与工业,2014,34(2):9-16.
[9]杨军,张玉龙,杨丹,等.稻秸对Pb2+的吸附特性[J].环境科学研究,2012,25(7):815-819.
[10]邹继颖,孙大志,赵家伟,等.玉米秸秆生物炭对重金属镉、铅的吸附性能[J].北华大学学报(自然科学版), 2018, 19(4):536-539.
[11]KYZAS G Z, KOSTOGLOU M. Green Adsorbents for Wastewa-ters:A Critical Review[J]. Materials, 2014, 7(1):333-364.
[12]李璐,杨朝晖,孙珮石,等.基于响应面优化条件下柚皮对Pb2+的吸附[J].环境科学学报,2009,29(7):1426-1433.
[13]袁健思,胡祖明,于俊荣,等.聚偏氟乙烯分离膜的表面改性和对重金属离子的吸附性能研究[J].化工新型材料, 2018, 46(6):123-127.
[14]孔爱群.面向水体中重金属离子吸附的壳聚糖吸附材料的制备及工艺研究[D].天津工业大学, 2018.
[15]Jiang D, Amano Y, Machida M. Removal and recovery of phos-phate from water by a magnetic Fe 3 O 4@ASC adsorbent[J]. Jour-nal of Environmental Chemical Engineering, 2017, 5(5):4229-4238.
[16]张小玲,乔玉辉,李花粉.玉米秸秆生物炭对溶液体系中不同重金属离子的吸附特性[J].中国农业大学学报, 2018, 23(5):15-21.
[17]张倩,柳超颖,范子皙,等.黍糠、菜籽饼生物炭的制备及其对重金属镉(Cd~(2+))的吸附[J].安全与环境学报, 2018, 18(2):664-670.
[18]朱健,吴庆定,王平,等.经典等温吸附模型在重金属离子/硅藻土体系中的应用及存在问题[J].环境科学, 2013, 34(11):4341-4348.
[19]Ji Z, Feng C, Wu X, et al. Composite of biomass and lead re-sistent Aspergillus oryzae for highly efficient aqueous phase Pb(II)adsorption[J]. Environmental Progress&Sustainable Energy, 2017,36(6):1659-1666.
[20]HASHEM A, El-KHIRAIGY K. Bioadsorption of Pb(II)ontoAnethum graveolens from Contaminated Wastewater:Equilibrium andKinetic Studies[J]. Journal of Environmental Protection, 2013, 04(01):108-119.
[21]HUANG LZ, ZENG GM, HUANG DL, et al. Adsorption of lead(I-I)from aqueous solution onto Hydrilla verticillata.[J]. Biodegradation,2009, 20(5):651-660.
[22]GUPTA A, YADAV R, DEVI A P. Removal of hexavalentchromium using activated coconut shell and activated coconut coir aslow cost adsorbent.[J]. Iioab Journal, 2011, 2(3):8-12.
[23]冀泽华,吴晓芙,李芸,等.水溶液重金属离子在蛭石上的动态吸附行为与化学势变[J].环境化学,2015,34(11):2109-2117.
[24]计海洋,汪玉瑛,吕豪豪,等.不同炭化温度制备的蚕丝被废弃物生物炭对重金属Cd~(2+)的吸附性能[J].应用生态学报, 2018,29(4):1328-1338.
[25]Tran H N, You S J, Hosseini-Bandegharaei A, et al. Mistakesand inconsistencies regarding adsorption of contaminants from aque-ous solutions:A critical review[J]. Water Research, 2017, 120(1):88-116.
[26]戴佩彬.基于响应曲面分析的生物炭制备及其对重金属吸附作用研究[J].农业科技与装备, 2018(2):47-49.
[27]王晓佩,薛英文,程晓如,等.生物炭吸附去除重金属研究综述[J].中国农村水利水电, 2013(12):51-56.