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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/32603

    標題: Water reuse nexus with resource recovery: On the fluidized-bed homogeneous crystallization of copper and phosphate from semiconductor wastewater
    作者: Bayon, Lester Lee E.
    Ballesteros, Florencio C., Jr.
    Garcia-Segura, Sergi
    Ming-Chun Lu(盧明俊)
    貢獻者: 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
    關鍵字: Industrial wastewater treatment
    Fluidized bed reactor
    Resource recovery
    Heavy metals
    Waste revalorization
    日期: 2019-11
    上傳時間: 2020-07-29 13:51:43 (UTC+8)
    摘要: 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.
    關聯: Journal of Cleaner Production, v.236, UNSP 117705
    Appears in Collections:[環境資源管理系(所)] 期刊論文

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