湿生植物纤维微球对染料废水的吸附性能研究
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摘要
湿生植物的资源化利用是当前研究的热点之一。选取3种水生态修复工程中常用的湿生植物(芦苇、美人蕉、再力花),进行了湿生植物纤维微球的制备及其吸附性能研究。结果表明,相比湿生植物木灰微球,湿生植物粉末微球对结晶紫的吸附性能较好,其中美人蕉粉末微球的吸附性能最佳。当结晶紫溶液的初始浓度为8 mg/L时,美人蕉粉末微球对其的平衡吸附量达1. 428 6 mg/g,平衡吸附时间为85 min。Freundlich等温吸附方程对湿生植物纤维微球吸附结晶紫溶液的过程拟合较好,说明其吸附机理以物理吸附为主、化学吸附为次。Lagergren准一级吸附动力学模型对湿生植物纤维微球吸附结晶紫溶液的过程拟合较好,说明内扩散为该过程中吸附速率的关键控制步骤。证实了湿生植物可制备成吸附材料,并应用于治理染料废水。
The resource utilization of hygrophytes is one of the current research hotspots; thus,three kinds of commonly hygrophytes( Reed,Canna,Thalia dealbata) commonly used in water ecological restoration projects were selected,and preparation and adsorption performance of hygrophytes fiber microspheres were studied.The results showed that the adsorption properties of microspheres prepared from wet plant powders on crystal violet were better than those of wood ash microspheres. Among them,the Canna powder microsphere had the best adsorption performance. When the concentration of crystal violet solution was 8 mg/L,the equilibrium adsorption capacity of Canna powder microsphere was 1. 428 6 mg/g,and its adsorption saturation time was only 85 minutes. The fitting results of isothermal adsorption equation showed that the fitting effect of Freundlich isothermal adsorption equation was better,indicating that the adsorption mechanism of wet violet microspheres to crystal violet solution was mainly based on physical adsorption and less chemical adsorption. Adsorption kinetics equation fitting results showed that the Lagergren quasi-first-order adsorption kinetics model fitted better,suggesting that the internal diffusion process was the key control step for the adsorption rate of crystal violet by hygrophytes fiber microspheres. It can be seen that wet plants can be prepared into adsorption materials for the treatment of dye wastewater.
The resource utilization of hygrophytes is one of the current research hotspots; thus,three kinds of commonly hygrophytes( Reed,Canna,Thalia dealbata) commonly used in water ecological restoration projects were selected,and preparation and adsorption performance of hygrophytes fiber microspheres were studied.The results showed that the adsorption properties of microspheres prepared from wet plant powders on crystal violet were better than those of wood ash microspheres. Among them,the Canna powder microsphere had the best adsorption performance. When the concentration of crystal violet solution was 8 mg/L,the equilibrium adsorption capacity of Canna powder microsphere was 1. 428 6 mg/g,and its adsorption saturation time was only 85 minutes. The fitting results of isothermal adsorption equation showed that the fitting effect of Freundlich isothermal adsorption equation was better,indicating that the adsorption mechanism of wet violet microspheres to crystal violet solution was mainly based on physical adsorption and less chemical adsorption. Adsorption kinetics equation fitting results showed that the Lagergren quasi-first-order adsorption kinetics model fitted better,suggesting that the internal diffusion process was the key control step for the adsorption rate of crystal violet by hygrophytes fiber microspheres. It can be seen that wet plants can be prepared into adsorption materials for the treatment of dye wastewater.
引文
[1]LI S,LIU X,ZOU T,et al.Removal of Cationic Dye from Aqueous Solution by a Macroporous Hydrophobically Modified Poly(acrylic Acid-acrylamide)Hydrogel with Enhanced Swelling and Adsorption Properties[J].Clean-Soil,Air,Water,2010,38(4):378-386.
[2]吴丹,缪爱军,李丽,等.表面流人工湿地不同植物及其组合净化污水处理厂尾水研究[J].水资源保护,2015,31(6):115-121.
[3]朱天菊,王兵,谢红丽,等.土著水生植物对页岩气钻井废水中Cu和Pb的去除及富集特征[J].环境科学研究,2017,30(3):478-483.
[4]KPAN W B,KONM W,BONFOH B,et al.E-valuation of eighteen west African plants for water purification,potential use for rural water treatment[J].Journal of Water Chemistry and Technology,2017,39(5):310-316.
[5]NURZHANOVA A,KALUGIN S,ZHAMBAKINK.Obsolete pesticides and application of colonizing plant species for remediation of contaminated soil in Kazakhstan[J].Environmental Science and Pollution Research,2013,20(4):2054-2063.
[6]吴振斌.水生植物与水体生态修复[M].北京:科学出版社,2011:81-83.
[7]唐宇力,钱萍,张海珍,等.8种观赏水湿生植物对重金属Cd和Pb的吸收固定能力[J].环境工程学报,2017,11(9):5313-5319.
[8]戴玉女,吴鹏举,杨扬,等.水生植被恢复对东莞生态工业园区水质改善的影响研究[J].生态环境学报,2014,23(9):1463-1471.
[9]琚泽文,蔚枝沁,邓泓.水生植被恢复对城市景观水体磷浓度及沉积物磷形态的影响[J].湖泊科学,2015,27(2):234-242.
[10]陈泽芳,杨旭楠,吴群河.水生植物材料与传统植物材料吸油性能比较[J].环境工程,2015,33(3):50-55.
[11]杨登越,吴辛睿,刘涛,等.改性水生植物枯落物对水体六价铬的吸附[J].环境保护前沿,2017,7(5):390-396.
[12]王博,叶春,李法云.水生植物制生物炭对硝态氮的吸附规律研究[J].中国环境科学,2017,37(1):116-122.
[13]刘冰雪,黄书鑫,熊淑婷,等.植物纤维微球对不同染料溶液的吸附特性研究[J].湖北理工学院学报,2017,33(5):25-28.
[14]汤亚飞,刘作焕,周旋,等.生物炭对亚甲基蓝的吸附动力学[J].武汉工程大学学报,2014,36(9):23-28.
[15]MIAO Z.Novel Functional Material of Starch Microsphere and the Adsorption Properties for Divalent Nickel[J].Journal of Inorganic&Organometallic Polymers&Materials,2011,21(4):832-835.
[16]唐玉斌,吕华,陈芳艳,等.固定化改性累托石微球对水中染料橙黄Ⅱ的吸附[J].环境科学与技术,2008,31(11):13-17.
[2]吴丹,缪爱军,李丽,等.表面流人工湿地不同植物及其组合净化污水处理厂尾水研究[J].水资源保护,2015,31(6):115-121.
[3]朱天菊,王兵,谢红丽,等.土著水生植物对页岩气钻井废水中Cu和Pb的去除及富集特征[J].环境科学研究,2017,30(3):478-483.
[4]KPAN W B,KONM W,BONFOH B,et al.E-valuation of eighteen west African plants for water purification,potential use for rural water treatment[J].Journal of Water Chemistry and Technology,2017,39(5):310-316.
[5]NURZHANOVA A,KALUGIN S,ZHAMBAKINK.Obsolete pesticides and application of colonizing plant species for remediation of contaminated soil in Kazakhstan[J].Environmental Science and Pollution Research,2013,20(4):2054-2063.
[6]吴振斌.水生植物与水体生态修复[M].北京:科学出版社,2011:81-83.
[7]唐宇力,钱萍,张海珍,等.8种观赏水湿生植物对重金属Cd和Pb的吸收固定能力[J].环境工程学报,2017,11(9):5313-5319.
[8]戴玉女,吴鹏举,杨扬,等.水生植被恢复对东莞生态工业园区水质改善的影响研究[J].生态环境学报,2014,23(9):1463-1471.
[9]琚泽文,蔚枝沁,邓泓.水生植被恢复对城市景观水体磷浓度及沉积物磷形态的影响[J].湖泊科学,2015,27(2):234-242.
[10]陈泽芳,杨旭楠,吴群河.水生植物材料与传统植物材料吸油性能比较[J].环境工程,2015,33(3):50-55.
[11]杨登越,吴辛睿,刘涛,等.改性水生植物枯落物对水体六价铬的吸附[J].环境保护前沿,2017,7(5):390-396.
[12]王博,叶春,李法云.水生植物制生物炭对硝态氮的吸附规律研究[J].中国环境科学,2017,37(1):116-122.
[13]刘冰雪,黄书鑫,熊淑婷,等.植物纤维微球对不同染料溶液的吸附特性研究[J].湖北理工学院学报,2017,33(5):25-28.
[14]汤亚飞,刘作焕,周旋,等.生物炭对亚甲基蓝的吸附动力学[J].武汉工程大学学报,2014,36(9):23-28.
[15]MIAO Z.Novel Functional Material of Starch Microsphere and the Adsorption Properties for Divalent Nickel[J].Journal of Inorganic&Organometallic Polymers&Materials,2011,21(4):832-835.
[16]唐玉斌,吕华,陈芳艳,等.固定化改性累托石微球对水中染料橙黄Ⅱ的吸附[J].环境科学与技术,2008,31(11):13-17.