混价MIL-53(Fe)催化过氧乙酸处理丝绸印染废水的影响因素及规律  

Influencing factors of silk printing&dyeing wastewater treatment by mixed-valence MIL-53(Fe)activated peracetic acid process

作　　者：胡倩[1,2,4] 蒋文斌 杨涛语 张明燕 朱斐超 吴明华 余德游[1,2,4] HU Qian;JIANG Wenbin;YANG Taoyu;ZHANG Mingyan;ZHU Feichao;WU Minghua;YU Deyou(College of Textile Science&Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,China;MOE Engineering Research Center of Ecological Dyeing and Finishing Technology,Zhejiang Sci-Tech University,Hangzhou 310018,China;MOE Key Laboratory of Advanced Textile Material and Preparation Technology,Zhejiang Sci-Tech University,Hangzhou 310018,China;Zhejiang Sci-Tech University Tongxiang Research Institute,Jiaxing 314500,China)

机构地区：[1]浙江理工大学纺织科学与工程学院,杭州310018 [2]浙江理工大学生态染整技术教育部工程研究中心,杭州310018 [3]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [4]浙江理工大学桐乡研究院,浙江嘉兴314500

出　　处：《丝绸》2022年第6期27-33,共7页Journal of Silk

基　　金：国家自然科学基金项目(22106141);浙江理工大学桐乡研究院博士后基金资助项目(TYY202103)。

摘　　要：芬顿氧化技术是丝绸印染废水深度处理中以保障水质达标排放或中水高效回用的新兴工艺,但常规芬顿工艺因H_(2)O_(2)难活化而效率偏低。为此,本文在开发混价MIL-53(Fe)催化过氧乙酸新型芬顿技术的基础上,通过考察其对模型污染物对硝基苯酚的降解性能,系统研究了过氧乙酸摩尔浓度、催化剂质量浓度、初始pH值、碳酸根摩尔浓度、氯离子摩尔浓度、腐殖酸质量浓度等关键因素的影响规律。结果表明:除了氯离子摩尔浓度,其他因素对降解性能均有重要影响,其中过氧乙酸摩尔浓度和催化剂的质量浓度与降解性能呈正相关,其余的都与降解性能呈负相关。该新型芬顿技术对丝绸印染二级出水具有良好的处理效果。Silk is a typical type of natural protein fiber with a reputation of"queen of the fiber".Silk products have attracted much attention among consumers due to its bright color,soft hand feeling,as well as comfortable wearability.Mature printing and dyeing(P&D)technology with great ability is widely used to process raw silk fabrics into exquisite satins.However,the wastewater generated during the P&D processes containing a large number of organic pollutants such as dyes and surfactants has the characteristics of high complexity,large chemical oxygen demand and deep chromaticity.After common treatments,these organic pollutants are usually converted into nonbiodegradable and refractory phenolic compounds(e.g.,p-nitrophenol(4-NP))which require further purifications by advanced treatments.Due to its high efficiency,low cost,cleanness and environmental protection,Fenton oxidation has been applied as an emerging technique for the advanced treatment of silk P&D wastewater to control the quality of discharged effluent and/or to enable the efficient reuse of wastewater.Unfortunately,conventional Fenton processes initiated by hydrogen peroxide(H_(2)O_(2))are inefficient due to the difficult activation of H_(2)O_(2)and limitation of available pH range.Compared with H_(2)O_(2),peracetic acid(PAA)molecules have an asymmetrical structure with a relatively low bond energy of O—O(159 kJ/mol),suggesting the easier activation of PAA for potential usage.However,researches focusing on the potential of using PAA as oxygen source for Fenton process are scarce.Thereby,it is of great significance to develop an efficient and stable heterogeneous catalyst with PAA and investigate the relationship of treatment efficiency with catalytic process conditions and wastewater matrices for the advanced treatment of silk P&D wastewater.Recently,the Fenton catalytic activity of Fe-MOFs has been evidenced significantly greater compared with traditional oxide catalyst(e.g.,Fe;O;,Fe;O;).Furthermore,the pre-design and post-modification of the structure of

关 键 词：混价MIL-53(Fe) 过氧乙酸 丝绸印染废水 催化 降解 芬顿 

分 类 号：TS190.3[轻工技术与工程—纺织化学与染整工程]