改性秸秆材料对高盐废水中染料和重金属的吸附性能研究

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英文篇名：Adsorption properties of modified straw materials for dye and heavy metals removal in high-salt wastewater 作者：陆建 ; 李耀悦 ; 周彦波 英文作者：LU Jian;LI Yaoyue;ZHOU Yanbo;State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China University of Science and Technology; 关键词：改性秸秆 ; 高盐印染废水 ; 吸附 英文关键词：modified straw;;high-salt printing and dyeing wastewater;;adsorption 中文刊名：环境科学学报 英文刊名：Acta Scientiae Circumstantiae 机构：华东理工大学资源与环境工程学院国家环境保护化工过程环境风险评价与控制重点实验室; 出版日期：2019-10-26 出版单位：环境科学学报 年：2019 期：10 基金：国家自然科学基金(No.51778230);; 上海市青年科技启明星计划(No.17QA1401000) 语种：中文; 页：205-211 页数：7 CN：11-1843/X ISSN：0253-2468 分类号：X703

摘要

高盐印染废水是一种难处理的工业废水,其盐度高、色度高,含有染料、重金属等多种污染物.本文针对高盐印染废水中污染物的特点,设计了一种制备过程简单、成本经济的柠檬酸/丙烯酰胺改性秸秆材料(WA-CA-AM),并通过SEM、FI-IR和DTG等表征手段分别观测材料形貌、测定表面官能团和热稳定性.同时在不同盐度下,考察了单元/多元污染物体系中WS-CA-AM对4种污染物亚甲基蓝(MB)、甲基橙(MO)、铜离子(Cu~(2+))和铬离子(Cr~(6+))的吸附效果.结果表明:在单元污染物体系中,WS-CA-AM对污染物的吸附量随盐度的升高而降低;在多元污染物体系中同时存在竞争吸附和协同吸附;通过二元体系得出4种污染物的吸附受盐度影响大小顺序为MO        High-salt printing and dyeing wastewater is a kind of refractory industrial wastewater with high salinity, high chroma, and contains many pollutants such as dyes and heavy metals. Aiming at the characteristics of pollutants in high-salt printing and dyeing wastewater, this paper designed a citric acid/acrylamide modified straw material(WA-CA-AM) with simple and green synthesis process and low cost. The morphology of the material, surface functional groups and thermal stability were observed by means of SEM, FI-IR and DTG. The adsorption performance of WS-CA-AM to different pollutants such as Methylene blue(MB),Methyl orange(MO), copper ions(Cu~(2+)) and chromium ion(Cr~(6+)) under different salinity in unit/multi-component pollutant system was studied. The results showed that in a single pollutant system, with the gradual increase of salinity, the adsorption amount of WS-CA-AM to pollutants gradually decreases; competitive adsorption and synergistic adsorption existed in multi-pollutant systems; the salinity resistance of four pollutants was MO>Cu~(2+)>Cr~(6+)>MB. Interestingly, under high salinity, the adsorption capacity of MB and Cu~(2+) in the quaternary mixed system is larger than that of the dye/heavy metal binary mixed system, and the adsorption amount of Cr~(6+) it is still considerable. WS-CA-AM has great potential in the treatment of high-salt printing and dyeing wastewater.

引文

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