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Pretreatment of preserved fruits wastewater by a novel Fe(III)-catalyzed oxidation coupled with calcium oxide precipitation

文献类型：期刊论文

作者Yao, Chongzhi1,2,3,4; Feng, Pingzhong1,3,4; Xu, Zhongbin1,3,4; Wang, Zhongming1,3,4; Zhu, Tingting5; Li, Zhibing1; Zhu, Shunni1,3,4
刊名DESALINATION AND WATER TREATMENT
出版日期2023-05-01
卷号293页码:124-137
关键词Preserved fruits wastewater Sulfite Catalytic oxidation Fe(III) ion Precipitation
ISSN号1944-3994
DOI10.5004/dwt.2023.29524
通讯作者Zhu, Shunni(zttszhky@sina.com)
英文摘要The high concentration of sulfite in preserved fruits wastewater is toxic to microorganisms, which tends to break down the biological treatment system and leads to poor effluent quality. In addi-tion, the pH decreases constantly due to the presence of sulfite during biological treatment, even if it is repeatedly adjusted to neutral. Therefore, to ensure the stable and efficient operation of bio-logical treatment, a novel pretreatment was proposed through transition metal ions catalyzed oxi-dation coupled with chemical precipitation. The results showed that Fe(III) ion achieved the best catalytic efficacy for the oxidation of sulfite which was attributed to the combination of complex-ation and free radical reaction. Under the optimal conditions (aeration rate = 0.10 L/min, Fe(III) dos-age = 5 mmol/L), the sulfite removal was 80.1%, concomitant with 20.7% of chemical oxygen demand (COD) removal. Further, by calcium oxide precipitation, the sulfite was completely removed, COD decreased by 32.2% as well as BOD5/COD increased to 0.96, ensuring pH stability and high biode-gradability in subsequent biological treatments. These findings demonstrate that this pretreatment process has great potential for sulfite removal and provides an economical and practical approach to the treatment of preserved fruits wastewater.
WOS关键词IRON-CATALYZED OXIDATION ; AQUEOUS-SOLUTION ; RATE CONSTANTS ; IRON(III)-CATALYZED AUTOXIDATION ; SULFUR(IV) OXIDES ; SULFITE ; RADICALS ; KINETICS ; SULFATE ; SYSTEM
资助项目National Key Ramp;D Program of China[2022YFE0207100] ; National Natural Science Foundation of China[21878291] ; National Natural Science Foundation of China[51861145103]
WOS研究方向Engineering ; Water Resources
语种英语
WOS记录号WOS:001026601800013
出版者DESALINATION PUBL
资助机构National Key Ramp;D Program of China ; National Natural Science Foundation of China
源URL[http://ir.giec.ac.cn/handle/344007/39209]  
专题中国科学院广州能源研究所
通讯作者Zhu, Shunni
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
5.Shenzhen Acad Environm Sci, Guangdong Engn Res Ctr Low Energy Treatment, State Environm Protect Key Lab Drinking Water Sour, Shenzhen Key Lab Emerging Contaminants Detect & Co, Shenzhen 518001, Peoples R China
推荐引用方式
GB/T 7714		 Yao, Chongzhi,Feng, Pingzhong,Xu, Zhongbin,et al. Pretreatment of preserved fruits wastewater by a novel Fe(III)-catalyzed oxidation coupled with calcium oxide precipitation[J]. DESALINATION AND WATER TREATMENT,2023,293:124-137.
APA Yao, Chongzhi.,Feng, Pingzhong.,Xu, Zhongbin.,Wang, Zhongming.,Zhu, Tingting.,...&Zhu, Shunni.(2023).Pretreatment of preserved fruits wastewater by a novel Fe(III)-catalyzed oxidation coupled with calcium oxide precipitation.DESALINATION AND WATER TREATMENT,293,124-137.
MLA Yao, Chongzhi,et al."Pretreatment of preserved fruits wastewater by a novel Fe(III)-catalyzed oxidation coupled with calcium oxide precipitation".DESALINATION AND WATER TREATMENT 293(2023):124-137.

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来源：广州能源研究所

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