NaHCO处理胶乳生产污泥制备吸附剂对阳离子染料的吸附

doi:10.16085/j.issn.1000-6613.2018-1781

化工进展 ›› 2019, Vol. 38 ›› Issue (06): 3002-3009.DOI: 10.16085/j.issn.1000-6613.2018-1781

• 资源与环境化工 • 上一篇

NaHCO处理胶乳生产污泥制备吸附剂对阳离子染料的吸附

夏晶晶¹, 张克瑞², 蔡豆豆², 张宾², 潘颖², 柳荣展^2,3

1 青岛大学化学化工学院, 山东青岛 266071;
2 青岛大学纺织服装学院, 山东青岛 266071;
3 山东省生态纺织协同创新中心, 山东青岛 266071

收稿日期:2018-09-05 修回日期:2018-12-20 出版日期:2019-06-05 发布日期:2019-06-05
通讯作者: 柳荣展,副教授,硕士生导师,研究方向为清洁生产与资源化利用。
作者简介:夏晶晶(1993-),女,硕士研究生,研究方向为资源化利用。E-mail:1174792681@qq.com。
基金资助:
国家自然科学基金青年基金（51508285）；山东省自然科学基金（ZR2015PE013）。

Preparation of adsorbent from latex-producing sludge by NaHCO₃ treatment and its adsorption of cationic dye

XIA Jingjing¹, ZHANG Kerui², CAI Doudou², ZHANG Bin², PAN Ying², LIU Rongzhan^2,3

1 College of Chemistry and Chemical Engineering, Qingdao University, Qingdao 266071, Shangdong, China;
2 College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shangdong, China;
3 Collaborative Innovation Center for Eco-Textiles of Shandong Province, Qingdao 266071, Shangdong, China

Received:2018-09-05 Revised:2018-12-20 Online:2019-06-05 Published:2019-06-05

摘要/Abstract

摘要： 以胶乳生产厂脱水污泥为原料、1.40mol/L的NaHCO₃作膨胀剂，60℃浸渍并超声处理30min，污泥烘干后再经高温炭化制备吸附剂，将其用于吸附阳离子兰X-GRRL染料溶液，考察炭化温度、炭化时间、吸附剂粒径、吸附剂投加量、吸附时间及溶液pH对吸附效果的影响，并对其吸附动力学和吸附等温线类型进行了探讨。结果表明：污泥在炭化温度700℃、炭化时间120min的条件下，制备的吸附剂（粒径<0.75mm）的比表面积为118.95m²/g，孔隙结构较为发达，对染料溶液吸附效果最佳；在振荡频率150r/min、吸附温度为25℃±0.10℃、初始染料质量浓度为250mg/L、吸附剂投加量为1.20g/L、溶液pH为5.47、吸附时间为300min时，溶液脱色率可达98.30%，染料吸附量为204.80mg/g；其吸附动力学可用准二级动力学方程进行描述；符合Langmuir型吸附等温线，属于单分子层吸附；吸附剂浸出液及吸附处理后的染料溶液的COD值分别为4.00mg/L和20.00mg/L，不会对水体造成二次污染。

关键词: 胶乳生产污泥, 吸附剂, 膨胀剂, 动力学, 吸附等温线模型

Abstract: In this paper, a porous carbonaceous adsorbent was prepared by using dewatered sludge from wastewater of latex-producing factory as raw materials and sodium bicarbonate as sweller. The sludge was immersed in a 1.40mol/L NaHCO₃ solution and sonicated for 30 minutes at 60℃, then dried and carbonized at high temperature. Cationic blue X-GRRL was used to test the adsorption capacities of the obtained adsorbent. The effects of carbonization temperature, carbonization time, adsorbent sizes, dosage of adsorbent, adsorption time and pH of solution on adsorption were investigated. The adsorption kinetics and isotherm type were also studied. The results indicate that the maximum adsorption amount of carbonized sludge was prepared at 700℃ for 120min.The carbonized sludge with the sizes of less than 0.075mm is mainly mesoporous in nature, with specific surface area reaching 118.95m²/g. The decolorization rate of the solution was up to 98.30% and the adsorption amount of cationic dye was 204.80mg/g with oscillation frequency of 150r/min, temperature of 25℃±0.10℃, initial dye concentration of 250mg/L, adsorbent dosage of 1.20g/L, pH of 5.47, and time of 300 min. The adsorption kinetic favored pseudo-second-order model, and the equilibrium adsorption data obtained fitted into the Langmuir isotherm suggesting the adsorption was monolayer. The COD values of the adsorbent leaching solution and the dye solution after adsorption were 4.00mg/L and 20.00mg/L, respectively, indicating that the adsorbent would not cause secondary pollution to the water body.

Key words: latex-producing sludge, adsorbents, swelling agent, kinetics, adsorption isotherm model

中图分类号:

TQ610.9

夏晶晶, 张克瑞, 蔡豆豆, 张宾, 潘颖, 柳荣展. NaHCO处理胶乳生产污泥制备吸附剂对阳离子染料的吸附[J]. 化工进展, 2019, 38(06): 3002-3009.

XIA Jingjing, ZHANG Kerui, CAI Doudou, ZHANG Bin, PAN Ying, LIU Rongzhan. Preparation of adsorbent from latex-producing sludge by NaHCO₃ treatment and its adsorption of cationic dye[J]. Chemical Industry and Engineering Progress, 2019, 38(06): 3002-3009.

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NaHCO处理胶乳生产污泥制备吸附剂对阳离子染料的吸附

Preparation of adsorbent from latex-producing sludge by NaHCO₃ treatment and its adsorption of cationic dye

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NaHCO处理胶乳生产污泥制备吸附剂对阳离子染料的吸附

Preparation of adsorbent from latex-producing sludge by NaHCO3 treatment and its adsorption of cationic dye

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Preparation of adsorbent from latex-producing sludge by NaHCO₃ treatment and its adsorption of cationic dye