NaOH/KOH改性柠檬渣吸附Pb2+的动力学和热力学研究

doi:10.3969/j.issn.0253-2417.2017.03.020

摘要/Abstract

摘要： 分别利用10%的KOH和10%NaOH对柠檬渣进行化学改性，考查了改性后的柠檬渣的吸附性能，并研究了初始pH值、吸附时间及初始浓度对改性后柠檬渣吸附Pb²⁺的效果，同时，研究了其吸附动力学和热力学，并利用紫外光谱（UV）、X射线衍射仪（XRD）和能谱（EDS）对柠檬渣进行了表征。结果显示：KOH与NaOH改性柠檬渣对Pb²⁺的吸附平衡时间分别为60和90 min；KOH改性柠檬渣对Pb²⁺的吸附符合准二级动力学方程，而NaOH改性柠檬渣对Pb²⁺的吸附更符合准一级动力学方程，KOH与NaOH改性柠檬渣对Pb²⁺的吸附均符合Langmuir吸附模型；KOH和NaOH改性柠檬渣分别在280和191 nm处有最大紫外吸收波长；柠檬渣为无定型结构，主要由碳组成；吸附Pb²⁺的改性柠檬渣中均含有Pb元素，但吸附量不大。

关键词: 柠檬渣, 吸附, 改性, 动力学, 热力学

Abstract: In order to study the adsorption properties of chemically treated lemon residues, the lemon residues were modified by 10% KOH and 10% NaOH, respectively. The effects of the initial pH, adsorption time and initial concentration on the adsorption of Pb²⁺ were investigated, and the adsorption kinetics and thermodynamics were also studied. The samples were characterized by means of UV, XRD and EDS. The results showed that the adsorption equilibrium times of KOH and NaOH modified lemon residue to Pb²⁺ were 60 and 90 min, respectively. The adsorption of Pb²⁺ onto KOH modified lemon residue fitted to the quasi second order kinetic equation, whereas the adsorption by NaOH modified lemon residue more fitted to quasi first order kinetic equation. The adsorption of Pb²⁺ on modified lemon residue was in accordance with the Langmuir adsorption model.The maximum UV absorption wavelengths of KOH and NaOH modified lemon residues were 280 and 191 nm respectively. The structures of the lemon residues were amorphous and mainly composed of carbon. And there was Pb element in the absorbed modified lemon residues, but the formation peak of EDS was not high.

Key words: lemon residues, adsorption, modification, kinetics, thermodynamics

中图分类号:

TQ91

沈王庆, 雷阳. NaOH/KOH改性柠檬渣吸附Pb²⁺的动力学和热力学研究[J]. 林产化学与工业, 2017, 37(3): 141-146.

SHEN Wangqing, LEI Yang. Kinetics and Thermodynamics Studies of the Adsorption of Pb²⁺ onto NaOH/KOH Modified Lemon Residues[J]. Chemistry and Industry of Forest Products, 2017, 37(3): 141-146.

参考文献

[1] OSTOICH M,CARCERERI M,BARBARO J. River sediments' monitoring:Impact of tannery discharges[J]. Emerald Insight,2013,25(4):379-406.
[2] BORGHI C C,AKIYAMA Y,FABBRI M,et al. Magnetic separation of magnetic activated carbons for water treatment and reuse[J]. Emerald Insight, 2013,33(1):445-462.
[3] FENG N C,GUO X Y. Characterization of adsorptive capacity and mcchanisms on adsorption of copper, lead and zinc by modified orange peel[J]. Transactions of Nonferrus Metals Society of China,2012,22(5):1224-1231.
[4] 段孟辰,薛科社,邹卓彪.时间和温度对活性炭与板栗壳吸附铜铅锌镉的影响[J]. 农业资源与环境学报,2013,30(5):68-71. DUAN M C,XUE K S,ZOU Z B. Effects of time and temperature on adsorption of Cu²⁺,Zn²⁺, Pb²⁺,Cd²⁺ by activated carbon and chestnut shell[J]. Journal of Agricultural Resources and Environment,2013,30(5):68.
[5] BOLUDA-AGUILAR M, LÓPEZ-CÓMEZ A. Production of bioethanol by fermentation of lemom (Citrus limon L.) peel wastes pretreated with steam explosion[J]. Industrial Crops and Products, 2013,41:188-197.
[6] 杨继利.荔枝皮作为新型吸附剂对重金属离子的吸附研究[D].泰安:山东农业大学硕士学位论文,2014. YANG J L. Studies onadsorption of heavy metals by new adsorbents made from litchi pericarps[D]. Taian:Master Degree Thesis of Shandong Agricultural University, 2014.
[7] 沈王庆,李小雪,黄佳.改性柠檬渣的结构特征及其对Cu²⁺的吸附性能[J].环境科学研究,2016,29(1):146-154. SHEN W Q, LI X X, HUANG J. Structural characteristics and Cu²⁺ adsorption properties of modified lemon residues[J]. Research of Environmental Sciences, 2016,29(1):146-154.
[8] 李冬梅,颜小挺,吕建兴,等.中国柠檬出口增长的成因分析[J].世界农业,2015,3:110-114. LI D M,YAN X T,LV J X,et al. An analysis of the causes on China's lemon export[J]. World Agriculture,2015,3:110-114.
[9] 冉敬,黄秀丽,汪阳平,等.柠檬渣吸附污水中铬(Ⅵ)的工艺研究[J].湖北农业科学,2015,54(17):4177-4150. RAN J,HUANG X L,WANG Y P,et al. Study on adsorption behaviors of Cr(Ⅵ) in sewage by lemon slag[J]. Hubei Agricultural Sciences,2015,54(17):4177-4150.
[10] MARIN-RANGEL V M,CORTES-MARTINEZ R,VILLANUEVA R A C,et al. As(V) biosorption in an aqueous solution using chemically treated lemon (Citrus aurantifolia Swingle) residues[J]. Journal of Food Science,2012,71(1):10-14.
[11] 沈王庆,雷阳.H₃PO₄改性柠檬渣的吸附性能与表征研究[J].江苏农业科学,2016,44(3):376-380. SHEN W Q, LEI Y. Study on adsorption properties of lemon residues modifed by H₃PO₄[J]. Jiangsu Agricultural Sciences,2016,44(3):376-380.
[12] 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. AI L, LUO X G, LIN X Y,et al. Extended study of sunflower straw in the selective adsorption behaviors and mechanisms for U(VI) and Pb(Ⅱ)[J]. Chemistry and Industry of Forest Products,2014,34(2):9-16.
[13] HAIYAN F,TIAN C,GUOHE H,et al. Effects of rhamnolipid on the adsorption of Pb²⁺ onto compost humic acid[J]. Desalination and Water Treatment,2015,54(11):3177-3183.
[14] DING S L,HOU D D,XU B H,et al. Adsorption of Pb²⁺, Cu²⁺ and Cr³⁺ on Yongnian bentonite[J]. Advanced Materials Research, 2014,1056:16-19.
[15] 胡慧君.酸性条件下微波改性活性碳纤维的制备及其对Pb(Ⅱ)的吸附研究[D].长沙:湖南大学硕士学位论文,2015. HU H J. Study on the synthesis of activated carbon fiber modified by microwave in acid condition and its application for Pb(Ⅱ) adsorption[D]. Changsha:Master Degree Thesis of Hunan University, 2015.
[16] 王茹,唐兰模.壳聚糖吸附水溶液中微量Pb²⁺的研究[J].四川大学学报,2001,33(3):55-57. WANG R,TANG L M. Study on the sorption of Pb²⁺ in water by chitosan[J]. Journal of Sichuan University,2001,33(3):55-57.
[17] 冯宁川,郭学益,梁莎,等.皂化改性橘子皮生物吸附剂对重金属离子的吸附[J].环境工程学报,2012,6(5):1647-1672. FENG N C, GUO X Y, LIANG S et al. Adsorption of heavy metal ions by saponified orange peel[J]. Chinese Journal of Environmental Engineering,2012,6(5):1647-1672.
[18] 沈王庆,王淼,杨婷.柠檬渣吸附污水中Hg²⁺的动力学研究[J].光谱学与光谱分析,2016,36(3):788-794. SHEN W Q,WANG M,YANG T. Study on kinetic of Hg²⁺ from wastewater adsorpted by lemon residues[J]. Spectroscopy and Spectral Analysis, 2016,36(3):788-794.

NaOH/KOH改性柠檬渣吸附Pb²⁺的动力学和热力学研究

Kinetics and Thermodynamics Studies of the Adsorption of Pb²⁺ onto NaOH/KOH Modified Lemon Residues

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

关于本刊

投稿指南

在线期刊

相关单位

联系我们

[1]	陈金伟, 王丹, 商士斌, 刘鹤, 蔡照胜. 端氨基超支化聚合物接枝双醛基纳米纤维素的制备及其对Ni²⁺的吸附[J]. 林产化学与工业, 2019, 39(4): 18-26.
[2]	吴少基, 江坤, 叶跃元, 刘运权, 王夺, 李水荣. 污泥与杨木屑共热解焦制活性炭及其废水处理应用[J]. 林产化学与工业, 2019, 39(4): 56-64.
[3]	孙永昌, 张冰清, 刘力鸣, 刘肖南, 史正军. 木质素基炭材料的制备及其对Cr(VI)的吸附机制研究[J]. 林产化学与工业, 2019, 39(4): 120-128.
[4]	马红亮, 陈健, 焦健, 邓拥军, 孔振武, 房桂干. 长链硅烷改性杨木纤维的制备及其表征[J]. 林产化学与工业, 2019, 39(3): 25-33.
[5]	徐士超, 曾小静, 董欢欢, 赵振东. 萜类植物源除草活性物开发及应用研究进展[J]. 林产化学与工业, 2019, 39(2): 1-8.
[6]	李延庆, 刘志明, 程小凯, 曹梦楠, 王佳楠. 海藻酸钠/纤维素复合微球的制备及性能表征[J]. 林产化学与工业, 2019, 39(2): 67-72.
[7]	赵存异, 应文俊, 史正军, 杨海艳, 郑志锋, 杨静. 羟丙基化碱木质素的制备及其对纤维素酶水解的影响[J]. 林产化学与工业, 2019, 39(2): 109-114.
[8]	许利娜, 杨小华, 丁海阳, 李梅, 夏建陵. 氧化改性木质素磺酸钠-石墨烯复合量子点的制备及性能[J]. 林产化学与工业, 2019, 39(1): 29-34.
[9]	张昌伟, 马余璐, 陶冉, 叶建中, 王成章. 银杏叶聚戊烯醇的分离纯化及其亲水衍生物的合成[J]. 林产化学与工业, 2019, 39(1): 41-45.
[10]	高和, 孙勇, 唐兴, 曾宪海, 林鹿. 异氰酸酯改性竹材表面及其抗蚀性能研究[J]. 林产化学与工业, 2019, 39(1): 46-52.
[11]	陈金伟, 商士斌, 沈明贵, 王丹, 付飞, 蔡照胜. 端氨基纳米纤维素的制备及对Pb(Ⅱ)的吸附性能研究[J]. 林产化学与工业, 2018, 38(6): 11-19.
[12]	马红亮, 陈健, 焦健, 邓拥军, 孔振武, 房桂干. 有机硅氧烷改性杨木纤维的制备及其表征[J]. 林产化学与工业, 2018, 38(6): 20-26.
[13]	许鹏博, 何晶, 俞娟, 范一民. 高锰酸钾改性汉麻秆芯对亚甲基蓝吸附性能的研究[J]. 林产化学与工业, 2018, 38(6): 81-87.
[14]	刘云龙, 宋科, 肖卓炳, 郭婕. ZSM-5分子筛对杜仲绿原酸的吸附行为研究[J]. 林产化学与工业, 2018, 38(6): 95-102.
[15]	董阜豪, 陈莉晶, 郭佳雯, 徐徐, 王石发, 刘鹤. 生物质改性水性聚氨酯的合成及应用研究进展[J]. 林产化学与工业, 2018, 38(5): 1-8.