IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Sewage sludge-derived TiO2/Fe/Fe3C-biochar composite as an efficient heterogeneous catalyst for degradation of methylene blue
Mian, MM (Mian, Md Manik)[ 1,2 ] ;  Liu, GJ (Liu, Guijian)[ 1,2 ]
2019-01
Source PublicationCHEMOSPHERE
Volume215Pages:101-114
Contribution Rank2
AbstractNovel TiO2/Fe/Fe3C-biochar composite, as a heterogeneous catalyst, has been synthesized by a single-step route, where sewage sludge (SS) and different ratios of nanoparticles (NPs: Fe and Ti) impregnated with chitosan using coagulation and flocculation techniques for subsequent thermal decomposition at 800 degrees C. The physiochemical properties of samples have been characterized thoroughly and employed in methylene blue (MB) degradation tests. It was found that NPs ratio and chitosan support have significant influences on the properties and catalytic activity of catalysts. Chitosan inclusion successfully improves the surface area and mesoporosity of composites, while high contents of Fe integration reduce surface area and active site (Fe3C) due to Fe-0 agglomeration. Though, Ti incorporation produces Ti3+ that activated photosensitivity. Catalyst with the high mesoporous surface, Ti3+ , selective Fe3C, and small Fe-0 shows superior MB removal competency through concurrent adsorption, photodegradation, and H2O2 activation. Primarily center dot OH and some O-2(center dot-) radicles participating in the degradation reactions evident from scavenging experiments. The maximum MB removal capacity evaluated as 376.9 mg L-1 in neutral pH. Moreover, the catalyst exhibits excellent material stability, recyclability, easy separability, and low Fe-ion leaching (0.11 mg L-1 ) after catalysis. This study provided new insight into a low-cost and environmentally friendly route of catalyst synthesis using SS, NPs, and chitosan, which concurrently advantageous to SS disposal and wastewater treatment. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordOXYGEN REDUCTION REACTION PYROLYSIS TEMPERATURE CARBON NANOSHEETS AQUEOUS-SOLUTIONS FACILE SYNTHESIS CO-PYROLYSIS WASTE-WATER BIOCHAR PERFORMANCE OXIDATION
DOI10.1016/j.chemosphere.2018.10.027
Language英语
WOS IDWOS:000450383400013
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/11270
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Mian, MM , Liu, GJ . Sewage sludge-derived TiO2/Fe/Fe3C-biochar composite as an efficient heterogeneous catalyst for degradation of methylene blue[J]. CHEMOSPHERE,2019,215:101-114.
APA Mian, MM ,& Liu, GJ .(2019).Sewage sludge-derived TiO2/Fe/Fe3C-biochar composite as an efficient heterogeneous catalyst for degradation of methylene blue.CHEMOSPHERE,215,101-114.
MLA Mian, MM ,et al."Sewage sludge-derived TiO2/Fe/Fe3C-biochar composite as an efficient heterogeneous catalyst for degradation of methylene blue".CHEMOSPHERE 215(2019):101-114.
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