Nickel recovery from synthetic Watts bath electroplating wastewater by homogeneous fluidized bed granulation process

doi:10.1016/j.seppur.2016.06.010

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/30921

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/30921

Title:	Nickel recovery from synthetic Watts bath electroplating wastewater by homogeneous fluidized bed granulation process
Authors:	Salcedo, Angel Frances M. Ballesteros, Florencio C. Vilando, Anabella C. Lu, Ming-Chun
Contributors:	Univ Philippines, Coll Engn, Environm Engn Grad Program Adamson Univ, Dept Chem Engn, Coll Engn Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
Keywords:	Granulation process Fluidized-bed reactor Watts bath electroplating wastewater Nickel recovery
Date:	2016-09
Issue Date:	2018-01-18 11:37:58 (UTC+8)
Publisher:	Elsevier Science Bv
Abstract:	This study determined the removal of nickel from a synthetic Watts bath electroplating composition (NiCl2 center dot 6H(2)O, NiSO4 center dot 6H(2)O, and H3BO3) by homogeneous fluidized-bed granulation process. The effects of adding calcium ions present in an electroplating bath while varying influent nickel concentration (200 mg.L-1, 300 mg.L-1, and 400 mg.L-1), [CO32-:Ni2+] molar ratio (1.0, 1.5 and 2.0) and pH of carbonate precipitant (10.5, 10.8, and 11.0) were evaluated. Calcium ion addition was varied at 20 mg.L-1, 50 mg.L-1, and 100 mg.L-1. The best operating conditions were at 300 mg.L-1 influent nickel concentration, [CO32-:Ni2+] molar ratio of 1.5, and pH of 10.8 of the precipitant from different types of water source. The removal of nickel from synthetic Watts bath electroplating wastewater using tapwater was 84.93%, and 92.66% with the addition of Ca2+ ion at 20 mg.L-1. For the synthetic Watts bath electroplating wastewater using reverse osmosis water, nickel removal was 97.08% and 98.51% when pure nickel ion in the solution was used. The characterized granules has low symmetry that confirmed the characteristics of a nullaginite mineral of Ni-2(CO3)(OH)(2). (C) 2016 Elsevier B.V. All rights reserved.
Relation:	Separation and Purification Technology, v.169, pp.128-136
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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