Water reuse nexus with resource recovery: On the fluidized-bed homogeneous crystallization of copper and phosphate from semiconductor wastewater

doi:10.1016/j.jclepro.2019.117705

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/32603

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Title:	Water reuse nexus with resource recovery: On the fluidized-bed homogeneous crystallization of copper and phosphate from semiconductor wastewater
Authors:	Bayon, Lester Lee E. Ballesteros, Florencio C., Jr. Garcia-Segura, Sergi Ming-Chun Lu(盧明俊)
Contributors:	Univ Philippines, Environm Engn Grad Program, Coll Engn Arizona State Univ, Nanosyst Engn Res Ctr Nanotechnol Enabled Water T, Sch Sustainable Engn & Built Environm Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
Keywords:	Industrial wastewater treatment Fluidized bed reactor Resource recovery Heavy metals Waste revalorization
Date:	2019-11
Issue Date:	2020-07-29 13:51:43 (UTC+8)
Publisher:	ELSEVIER SCI LTD
Abstract:	Green and sustainable strategies aim for the development of manufacturing processes that maximize the use of resources instigating semiconductor industry to adopt zero-liquid discharge policies. Complexity and variations of semiconductor wastewater effluents opens an opportunity for resource recovery (i.e. copper from chemical-mechanical polishing) including heavy metals and inorganic ions (i.e. phosphate from acid cleaning). This present work demonstrates the capabilities of fluidized-bed homogeneous crystallization as treatment technology to process water effluents for industrial reuse while simultaneously recovering precious resources such as copper and phosphate. Operational variables have been optimized considering the combination of both effluents to produce high quality copper phosphate granules. The optimum copper percentage removal and crystallization efficiency were 99% and 96.07% respectively obtained at pH(e) 6.0-6.5, 1.25 [PO4-3](in)/[Cu2+](in) at hydraulic retention time 22.5 min with 0.51 kg Cu2+/m(2) h and fixed [Cu2+](in) loading of 4.5 mM. The recovered crystals have an average particle diameter of similar to 1 mm and were characterized identifying libethenite (Cu2PO4OH) as main recovered products. (C) 2019 Elsevier Ltd. All rights reserved.
Relation:	Journal of Cleaner Production, v.236, UNSP 117705
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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