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西瓜皮基生物质碳气凝胶的制备及对染料的吸附
胡耀强1,2 , 房得珍2,3 , 叶秀深2,3 , 张慧芳2,3 , 刘海宁2,3,* , 吴志坚2,3
1 广东海洋大学海洋与气象学院,湛江 524088; 2 中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,西宁 810008; 3 青海省盐湖资源化学重点实验室,西宁 810008
Preparation of Watermelon Peel-based Carbon Aerogel and Its Adsorption Properties for Dyes
HU Yaoqiang1,2 , FANG Dezhen2,3 , YE Xiushen2,3 , ZHANG Huifang2,3 , LIU Haining2,3,* , WU Zhijian2,3
1 College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang 524088, China; 2 Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China; 3 Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China
摘要 生物质副产物作为原料合成的吸附剂具有种类多、来源广、成本低等优点,将其用于含染料废水的处理,具有较高的可行性。有鉴于此,本工作以西瓜皮为原料,采用水热-冷冻干燥法制备生物质碳气凝胶(WUA),将其用于对阴、阳离子型染料的吸附,并进一步考察溶液pH值、初始浓度、共存盐浓度、温度等对吸附行为的影响。结果表明:WUA对刚果红(CR)和孔雀石绿(MG)均表现出较好的吸附效果,在近中性溶液环境中,MG的吸附量明显大于CR的吸附量。同时,WUA对染料的吸附具有较好的抗共存离子影响的能力,在高浓度NaCl溶液体系中对CR和MG仍具有较高的吸附量。结合WUA和染料分子结构分析,静电吸引和氢键是吸附过程的主要驱动力。
关键词:
生物质碳气凝胶
水热-冷冻干燥法
吸附
染料
Abstract: There are many types of biomass by-products with wide sources. When they are used as raw material to synthesize adsorbent for the treatment of dye-containing wastewater, the overall sewage treatment cost would be very low, which makes it full of feasibility. In view of this, a biomass aerogel (WUA) was prepared using watermelon peel as raw material by hydrothermal-freeze drying method, to study its performance on the adsorption of anionic and cationic dyes. The effects of solution pH, initial concentration, coexisting salt concentration and temperature on the adsorption process were further investigated. The results show that WUA exhibits good adsorption effect on Congo Red (CR) and Malachite Green (MG). In near-neutral solution environment, the adsorption capacity of MG is larger than that of CR obviously. Moreover, the adsorption of WUA on dyes shows a good performance to resist the influence of coexisting ions, and maintains large capacities in high concentration NaCl solution. Combining the molecular structures of WUA and the two dyes, electrostatic attraction and hydrogen bonding are the main driving forces of the adsorption process.
Key words:
biomass carbon aerogel
hydrothermal-freeze drying method
adsorption
dye
出版日期: 2021-06-10
发布日期: 2021-06-25
基金资助: 青海省应用基础研究(2019-ZJ-7014); 青海省千人计划; 国家自然科学基金联合基金(U1607102); 广东海洋大学科研启动经费资助项目(R17070)
通讯作者:
*liuhn@isl.ac.cn
作者简介: 胡耀强,博士,广东海洋大学,讲师。主要从事水体中微量组分的分离材料与技术研究,目前已发表学术论文10余篇,取得授权专利4件。刘海宁,2010年毕业于中国科学院青海盐湖研究所,理学博士,研究员。主要从事盐湖资源综合利用,特别是盐湖稀有元素分离提取材料与技术研究工作。发表学术论文60余篇,取得授权专利18件。
引用本文:
胡耀强, 房得珍, 叶秀深, 张慧芳, 刘海宁, 吴志坚. 西瓜皮基生物质碳气凝胶的制备及对染料的吸附[J]. 材料导报, 2021, 35(11): 11007-11012.
HU Yaoqiang, FANG Dezhen, YE Xiushen, ZHANG Huifang, LIU Haining, WU Zhijian. Preparation of Watermelon Peel-based Carbon Aerogel and Its Adsorption Properties for Dyes. Materials Reports, 2021, 35(11): 11007-11012.
链接本文:
http://www.mater-rep.com/CN/10.11896/cldb.20060042
或
http://www.mater-rep.com/CN/Y2021/V35/I11/11007
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