响应面法优化改性香蕉皮对Pb~(2+)的吸附研究
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摘要
用海南本土天然农林废弃物香蕉皮制备的改性吸附剂,来研究其对废水中重金属铅离子的吸收效果。选用吸附剂用量、吸附时间、Pb~(2+)初始浓度和溶液pH等4个单因素的影响实验,在此基础上对上述4种因素采用Box-Behnken响应面优化设计和实验。结果表明,通过响应面设计分析得到改性香蕉皮吸附剂吸附废水中重金属铅离子的最佳条件为:吸附时间为48 min,吸附剂用量为3 mg/L,Pb~(2+)初始浓度为5.5 mg/L,pH值6,在此条件下Pb~(2+)吸附率达到最大值96.90%,接近于理论值96.97%;吸附时间、Pb~(2+)初始浓度以及吸附时间和Pb~(2+)初始浓度的交互作用对Pb~(2+)吸附率影响极显著(P<0.001),溶液pH对Pb~(2+)吸附率影响显著(P<0.05);二次响应面模型的P值小于0.000 1。该模型的回归方程极显著,可用来分析改性香蕉皮吸附剂对Pb~(2+)的吸附。
Modified adsorbent prepared by local agricultural and forestry waste banana peel in Hainan was used to study the efficacy of its absorbing heavy metal Pb~(2+) in wastewater. Based on the effects of single factor such as absorber dosage,adsorption time,the initial concentrations of Pb~(2+),and pH value on the adsorption rate,Box-Behnken response surface methodology was conducted to optimize the design and experiment. The results showed that the optimized condition of modified banana peel absorbing Pb~(2+) in wastewater by the response surface analysis was such :adsorption time 48 min,absorber dosage 3 mg/L,the initial concentrations of Pb~(2+) 5.5 mg/L and pH 6,under which the adsorption rate reached 96.90%,and this was consistent with the predicted value 96.97%. Adsorption time,the initial concentrations of Pb~(2+)and the interaction between adsorption time and initial concentrations of Pb~(2+) affected extremely significant on the adsorption rate(P<0.001);pH had significant effects on the adsorption rate(P<0.05). The variance analysis of the model revealed that the P value was < 0.000 1.The regression equation of the model was very significant,it could be used to analyze the adsorption of Pb~(2+) by modified banana peel.
Modified adsorbent prepared by local agricultural and forestry waste banana peel in Hainan was used to study the efficacy of its absorbing heavy metal Pb~(2+) in wastewater. Based on the effects of single factor such as absorber dosage,adsorption time,the initial concentrations of Pb~(2+),and pH value on the adsorption rate,Box-Behnken response surface methodology was conducted to optimize the design and experiment. The results showed that the optimized condition of modified banana peel absorbing Pb~(2+) in wastewater by the response surface analysis was such :adsorption time 48 min,absorber dosage 3 mg/L,the initial concentrations of Pb~(2+) 5.5 mg/L and pH 6,under which the adsorption rate reached 96.90%,and this was consistent with the predicted value 96.97%. Adsorption time,the initial concentrations of Pb~(2+)and the interaction between adsorption time and initial concentrations of Pb~(2+) affected extremely significant on the adsorption rate(P<0.001);pH had significant effects on the adsorption rate(P<0.05). The variance analysis of the model revealed that the P value was < 0.000 1.The regression equation of the model was very significant,it could be used to analyze the adsorption of Pb~(2+) by modified banana peel.
引文
[1]官章琴.农林废弃物对废水中Cr(Ⅵ)、Cu2+、Zn2+、Pb2+的吸附特性研究[D].青岛:中国海洋大学,2010.
[2]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.
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[4]董建丰,平巍,张六一,等.香蕉皮改性吸附剂对氨氮吸附特性[J].环境工程学报,2016,10(4):1807-1812.
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[6]李秋霖,张小琴,郑中兵.香蕉皮作为吸附材料处理污染物的研究进展[J].现代农业科技,2018,25(9):220-222,225.
[7]Mosa A,EL-Ghamr YA,Truby P.Chemically modified crop residues as a low-cost technique for the removal of heavy metal ions from waste water[J]Water Air&Soil Pollution,2011,217(1-4):637-647.
[8]Netzahuatl-Munoz AR,Guillen-Jimenez FDM,Chavez-Gomez B,et al.Kinetic study of the effect of pH on hexavalent and trivalent chromium removal from aqueous solution by cupressus lusitanica bark[J].Water Air&Soil Pollution,2012,223(2):625-641.
[9]Ngah WSW.Teong LC,Hanafiah MAKM.Adsorption of dyes and heavy metal ions by chitosan composites:A review[J].Carbohydrate Polymers,2011,83(4):1446-1456.
[10]向文英,谢冰冰,胡军涛,张强.铁观音茶梗对废水中Cr(Ⅵ)的还原吸附[J].重庆大学学报,2018,41(10):103-116.
[11]蓝梅,王丽君,张会宁,等.柠檬酸改性活性炭对水中Cr(VI)的吸附性能研究[J].水处理技术,2018,44(9):80-84,92.
[12]王华,张倩.芫荽对废水中重金属铅吸附性能的研究[J].食品研究与开发,2018,39(13):148-153.
[13]阎华,王会,黄升谋,等.酸化松木粉对废水中重金属离子Cr(Ⅵ)和Zn(Ⅱ)吸附的动力学研究[J].西南农业学报,2018,31(7):1485-1490.
[14]张庆芳,杨国栋,孔秀琴,赵祥.改性花生壳吸附水中Cr6+的研究[J].化学与生物工程,2008,25(2):29-31.
[15]Fiol N,Villaescusa I,Martinez M,et al.Sorption of Pb(II),Ni(II),Cu(II)and Cd(II)from aqueous solution by olive stone waste[J].Separation and Purification Technology,2005,50(1):132-140.
[16]郑文钊,胡巧开,陈芳,邓真丽.改性香蕉皮对Pb2+的吸附研究[J].离子交换与吸附,2013,29(5):440-448.
[17]刘攀,汤琪,文永林,等.碱化香蕉皮作为Pb2+吸附剂的性能研究[J].应用化工,2016,45(2):286-290.
[18]Annadurai G,Juang RS,Lee DJ.Adsorption of heavy metals from water using banana and orange peels[J].Water Science and Technology,2003,47(1):185.
[19]王雅辉,吕文英,邹雪刚,等.响应面法优化胡敏素对Cu2+的吸附及机理研究[J].环境科学学报,2016,37(2):624-632.
[2]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.
[3]李鹏,王文杰.国农业废弃物资源的利用现状及开发前景[J].天津农业科学,2009,15(3):46-49.
[4]董建丰,平巍,张六一,等.香蕉皮改性吸附剂对氨氮吸附特性[J].环境工程学报,2016,10(4):1807-1812.
[5]丁绍兰,谢林花,高芳.香蕉皮对重金属六价铬吸附性能研究[J].陕西科技大学学报:自然科学版,2013,31(4):9-14.
[6]李秋霖,张小琴,郑中兵.香蕉皮作为吸附材料处理污染物的研究进展[J].现代农业科技,2018,25(9):220-222,225.
[7]Mosa A,EL-Ghamr YA,Truby P.Chemically modified crop residues as a low-cost technique for the removal of heavy metal ions from waste water[J]Water Air&Soil Pollution,2011,217(1-4):637-647.
[8]Netzahuatl-Munoz AR,Guillen-Jimenez FDM,Chavez-Gomez B,et al.Kinetic study of the effect of pH on hexavalent and trivalent chromium removal from aqueous solution by cupressus lusitanica bark[J].Water Air&Soil Pollution,2012,223(2):625-641.
[9]Ngah WSW.Teong LC,Hanafiah MAKM.Adsorption of dyes and heavy metal ions by chitosan composites:A review[J].Carbohydrate Polymers,2011,83(4):1446-1456.
[10]向文英,谢冰冰,胡军涛,张强.铁观音茶梗对废水中Cr(Ⅵ)的还原吸附[J].重庆大学学报,2018,41(10):103-116.
[11]蓝梅,王丽君,张会宁,等.柠檬酸改性活性炭对水中Cr(VI)的吸附性能研究[J].水处理技术,2018,44(9):80-84,92.
[12]王华,张倩.芫荽对废水中重金属铅吸附性能的研究[J].食品研究与开发,2018,39(13):148-153.
[13]阎华,王会,黄升谋,等.酸化松木粉对废水中重金属离子Cr(Ⅵ)和Zn(Ⅱ)吸附的动力学研究[J].西南农业学报,2018,31(7):1485-1490.
[14]张庆芳,杨国栋,孔秀琴,赵祥.改性花生壳吸附水中Cr6+的研究[J].化学与生物工程,2008,25(2):29-31.
[15]Fiol N,Villaescusa I,Martinez M,et al.Sorption of Pb(II),Ni(II),Cu(II)and Cd(II)from aqueous solution by olive stone waste[J].Separation and Purification Technology,2005,50(1):132-140.
[16]郑文钊,胡巧开,陈芳,邓真丽.改性香蕉皮对Pb2+的吸附研究[J].离子交换与吸附,2013,29(5):440-448.
[17]刘攀,汤琪,文永林,等.碱化香蕉皮作为Pb2+吸附剂的性能研究[J].应用化工,2016,45(2):286-290.
[18]Annadurai G,Juang RS,Lee DJ.Adsorption of heavy metals from water using banana and orange peels[J].Water Science and Technology,2003,47(1):185.
[19]王雅辉,吕文英,邹雪刚,等.响应面法优化胡敏素对Cu2+的吸附及机理研究[J].环境科学学报,2016,37(2):624-632.