Enhanced recovery of aluminum from wastewater using a fluidized bed homogeneously dispersed granular reactor

doi:10.1016/j.chemosphere.2019.02.086

Chia Nan University of Pharmacy & Science Institutional Repository > 環境永續暨休閒學院 > 環境資源管理系(所) > 期刊論文 > Item 310902800/32584

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標題:	Enhanced recovery of aluminum from wastewater using a fluidized bed homogeneously dispersed granular reactor
作者:	Vilando, Anabella C. Caparanga, Alvin R. Ming-Chun Lu(盧明俊)
貢獻者:	Mapua Univ, Sch Chem Biol & Mat Engn & Sci Mapua Univ, Sch Grad Studies Adamson Univ, Coll Engn, Dept Chem Engn Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
關鍵字:	Fluidized-bed Granules Cross-section loading Upflow velocity Optimization Box-Behnken design
日期:	2019-05
上傳時間:	2020-07-29 13:50:53 (UTC+8)
出版者:	PERGAMON-ELSEVIER SCIENCE LTD
摘要:	The recovery of aluminum from wastewater is one of the main environmental issues that need to be addressed in the aluminum finishing industry. A new technique of converting a soft slurry into hard granules using the homogeneous granulation process in the fluidized-bed reactor (FBR) can respond to this problem. It is a better method of remediation than producing a slurry containing 70% water. This study deals with the recovery of aluminum from aqueous solutions using Fluidized-bed homogeneous granulation process (FBHGP) without seeds. The hydraulic operating conditions were optimized using Box-Behnken Design (BBD) to attain the optimum aluminum removal (AR%) and granulation ratio (GR%). Optimum values of AR% = 98.8% and GR%= 96.9% were attained at the following conditions: influent aluminum concentration, 334.1 mg L-1; precipitant pH, 10.4; molar ratio (MR) of precipitant to metal [OH-](in)/[Al3+](in), 2.5. The characteristics of the granules were comparable with those of orthorhombic structure of aluminum oxide (Al2.66O4). FBHGP was proven to be effective as dictated by the reaction mechanism in the recovery of aluminum from aluminum-rich aqueous solutions. (C) 2019 Elsevier Ltd. All rights reserved.
關聯:	Chemosphere, v.223, pp.330-341
显示于类别:	[環境資源管理系(所)] 期刊論文

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