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Strong enhancement of methylene blue removal from binary wastewater by in-situ ferrite process
Hao, Haotian; Wang, Yili; Shi, Baoyou; Han, Kun; Zhuang, Yuan; Kong, Yan; Huang, Xin
2018-11-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
Volume73Pages:107-116
AbstractDye wastewater containing heavy metal ions is a common industrial effluent with complex physicochemical properties. The treatment of metal-dye binary wastewater is difficult. In this work, a novel in-situ ferrite process (IFP) was applied to treat Methylene Blue (MB)-Cu(II) binary wastewater, and the operational parameters were optimized for MB removal. Results showed that the optimum operating conditions were OH/M of 1.72, Cu2+/Fe2+ ratio of 1/2.5, reaction time of 90 min, aeration intensity of 320 mL/min, and reaction temperature of 40 degrees C. Moreover, the presence of Ca2+ and Mg2+ moderately influenced the MB removal. Physical characterization results indicated that the precipitates yielded in IFP presented high surface area (232.50 m(2)/g) and a multi-porous structure. Based on the Langmuir model, the maximum adsorption capacity toward MB was 347.82 mg/g for the precipitates produced in IFP, which outperformed most other adsorbents. Furthermore, IFP rapidly sequestered MB with removal efficiency 5 to 10 times greater than that by general ferrite adsorption, which suggested a strong enhancement of MB removal by IFP. The MB removal process by IFP showed two different high removal stages, each with a corresponding removal mechanism. In the first brief stage (<5 min), the initial high MB removal (similar to 95%) was achieved by predominantly electrostatic interactions. Then the sweep effect and encapsulation were dominant in the second longer stage. (C) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Department中国科学院饮用水科学与技术重点实验室
KeywordDye and metal removal Ferrite process Multi-porous Physisorption
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/41414
Collection中国科学院饮用水科学与技术重点实验室
Recommended Citation
GB/T 7714
Hao, Haotian,Wang, Yili,Shi, Baoyou,et al. Strong enhancement of methylene blue removal from binary wastewater by in-situ ferrite process[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2018,73:107-116.
APA Hao, Haotian.,Wang, Yili.,Shi, Baoyou.,Han, Kun.,Zhuang, Yuan.,...&Huang, Xin.(2018).Strong enhancement of methylene blue removal from binary wastewater by in-situ ferrite process.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,73,107-116.
MLA Hao, Haotian,et al."Strong enhancement of methylene blue removal from binary wastewater by in-situ ferrite process".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 73(2018):107-116.
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