Improved water quality and phenol degradation via a combination of electron-beam irradiation (EBI) and activated carbon fiber (ACF) 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Desalination and water treatment: Science and engineering
年/卷/期
2017 / 64 / Feb.
页码
118-126
ISSN号
1944-3994
作者单位
Korea Inst Civil Engn & Bldg Technol KICT, Hydro Sci & Engn Res Inst, Andong 36754, South Korea;Kumoh Natl Inst Technol, Sch Civil & Environm Engn, Gumi 730701, South Korea;UNIST, Sch Urban & Environm Engn, Ulsan 689798, South Korea;Korea Atom Energy Res Inst, Taejon 305353, South Korea;UNIST, Sch Urban & Environm Engn, Ulsan 689798, South Korea;Kumoh Natl Inst Technol, Sch Civil & Environm Engn, Gumi 730701, South Korea;
作者
Gu, Joung-Eun;Son, Guntae;Lee, Hongshin;Park, Jihyun;Kwon, Young-Nam;Lee, Seunghwan;
摘要
Electron-beam irradiation (EBI) was used to remove phenol in aqueous solution. The removal -efficiencies of phenol were determined, and their relationships with the initial phenol concentration, absorbed dose, and electron-beam energy were investigated. The EBI was conducted in air with absorbed doses from 40 to 120 kGy under 0.3, 1, and 2 MeV electron beams. G-values were introduced to evaluate the removal of phenol quantitatively and were higher at an absorbed dose of 40 kGy than at 80 or 120 kGy. Dose constants (K) were found to depend on the absorbed dose and initial phenol concentration and used to calculate the optimum doses required for 90% (D-0.9) and 50% (D-0.5) removal of phenol. The reduction of the biochemical oxygen demand (BOD5), chemical oxygen demand (CODCr), and total organic carbon (TOC) via EBI indicated organic degradation upon irradiation. The EBI process was combined with activated carbon fiber (ACF) adsorption to improve the CODCr removal efficiency. The optimum ACF doses were 0.5, 1.0, and 1.33 g L-1 with 3, 6, and 6 h contact times for the 20, 50, and 100 mg L-1 phenol solutions, respectively. The combination of EBI with ACF improved the CODCr removal efficiency, even in the more concentrated phenol solution. EBI may be a promising pretreatment process for purifying highly concentrated wastewater.
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关键词/主题词
Electron-beam irradiation;Dose;Phenol;Activated carbon fiber;
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