title: A sustainable route for the preparation of activated carbon and silica from rice husk ash.
abstract: An environmentally friendly and economically effective process to produce silica and activated carbon form rice husk ask simultaneously has been developed in this study. An extraction yield of silica of 72-98% was obtained and the particle size was 40-50 nm. The microstructures of the as-obtained silica powders were characterized by X-ray diffraction (XRD) and infrared spectra (IR). The surface area, iodine number and capacitance value of activated carbon could achieve 570 m(2)/g, 1708 mg/g, 180 F/g, respectively. In the whole synthetic procedure, the wastewater and the carbon dioxide were collected and reutilized. The recovery rate of sodium carbonate was achieved 92.25%. The process is inexpensive, sustainable, environmentally friendly and suitable for large-scale production.
authors.affiliation: College of Chemistry, Jilin University, Qianjin Street, 2699, Changchun 130012, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Yupeng
authors.initials: Y
authors.lastname: Guo
authors.forename: Yanchao
authors.initials: Y
authors.lastname: Zhu
authors.forename: Dongmin
authors.initials: D
authors.lastname: An
authors.forename: Wei
authors.initials: W
authors.lastname: Gao
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Wang
authors.forename: Yuejia
authors.initials: Y
authors.lastname: Ma
authors.forename: Zichen
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000143:Acids; D002244:Carbon / Q000737:chemistry*; D002254:Carbonates / Q000032:analysis; D060729:Coal Ash; D006358:Hot Temperature; D046529:Microscopy, Electron, Transmission; D008903:Minerals / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D012275:Oryza / Q000737:chemistry*; D052638:Particulate Matter / Q000737:chemistry; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D013054:Spectrophotometry, Atomic; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water / Q000032:analysis; D014961:X-Ray Diffraction
chemical_list: D000143:Acids; D002254:Carbonates; D060729:Coal Ash; D008903:Minerals; D052638:Particulate Matter; D014867:Water; D002244:Carbon; D012822:Silicon Dioxide; D009584:Nitrogen