兰州大学机构库 >资源环境学院
Efficient Removal of Rhodamine B in Wastewater via Activation of Persulfate by MnO2 with Different Morphologies
Zhang, Xinyi1,2; Gan, Xinrui1; Cao, Shihu1; Shang, Jiangwei1,2; Cheng, XW(程修文)1,2
2023-02-01
Source PublicationWater (Switzerland)   Impact Factor & Quartile
Volume15Issue:4
page numbers12
AbstractIn recent years, typical organic pollutants were frequently found in aquatic environments. Among them, synthetic dyes were widely used in many industries, which resulting in a large amount of wastewater contained dyes. Because of the characteristic of complex components, poor biodegradability and high toxicity, this kind of wastewater brought lots of harm to the ecological environment and organism. In this study, three different types of manganese dioxide (MnO2) with the rod-like, needle-like and mixed morphologies respectively were successfully fabricated by hydrothermal method with changing the preparation conditions and addition of the metal ions, and utilized as activator of persulfate (PS) to remove the dyes aqueous. Subsequently, these MnO2 nanocomposite was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM) measurements. In addition, Rhodamine B (Rh B), as a representative substance of xanthene dyes was chosen as the target degradants to researched and compared the efficiency of removal via PS activated by different MnO2. By exploring the influences of different reaction parameters on the result of removal, results indicated that PS activated by the acicular MnO2 (α-MnO2) can remove 97.41% of Rh B over 60 min, with the optimal catalyst/PS ratio of 2:1 (the concentration of the α-MnO2 and PS were 1.2 g/L and 0.6 g/L, respectively), pH value of 3, at the temperature of 20 °C. Meanwhile, the probable degradation mechanism was also proposed. At last, as the catalyst was reused for four times, the degradation rate of target degradants decreased less than 10%. © 2023 by the authors.
KeywordBiodegradability Catalysts Degradation Dyes Manganese oxide Organic pollutants Scanning electron microscopy Stripping (dyes) Aquatic environments Complex components Ecological environments Hydrothermal methods Large amounts Needle-like Persulphate Rhodamine-B SO4•− Synthetic dyes PS MnO2 morphologies SO4 (-) mechanism
PublisherMDPI
DOI10.3390/w15040735
Indexed ByEI ; SCIE
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Water Resources
WOS SubjectEnvironmental Sciences ; Water Resources
WOS IDWOS:000941984300001
EI Accession Number20231013672782
EI KeywordsMetal ions
EI Classification Number531.1 Metallurgy ; 801.2 Biochemistry ; 802.2 Chemical Reactions ; 802.3 Chemical Operations ; 803 Chemical Agents and Basic Industrial Chemicals ; 804 Chemical Products Generally ; 804.1 Organic Compounds
Original Document TypeJournal article (JA) ; Article
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/498524
Collection资源环境学院
Corresponding AuthorCheng, Xiuwen
Affiliation
1.Key Laboratory of Pollutant Chemistry and Environmental Treatment, College of Chemistry and Environmental Science, Yili Normal University, Yining; 835000, China;
2.Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou; 730000, China
First Author AffilicationCollege of Earth Environmental Sciences
Corresponding Author AffilicationCollege of Earth Environmental Sciences
Recommended Citation
GB/T 7714
Zhang, Xinyi,Gan, Xinrui,Cao, Shihu,et al. Efficient Removal of Rhodamine B in Wastewater via Activation of Persulfate by MnO2 with Different Morphologies[J]. Water (Switzerland),2023,15(4).
APA Zhang, Xinyi,Gan, Xinrui,Cao, Shihu,Shang, Jiangwei,&Cheng, Xiuwen.(2023).Efficient Removal of Rhodamine B in Wastewater via Activation of Persulfate by MnO2 with Different Morphologies.Water (Switzerland),15(4).
MLA Zhang, Xinyi,et al."Efficient Removal of Rhodamine B in Wastewater via Activation of Persulfate by MnO2 with Different Morphologies".Water (Switzerland) 15.4(2023).
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