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dc.contributor.authorChang, CYen_US
dc.contributor.authorChen, YHen_US
dc.contributor.authorLi, Hen_US
dc.contributor.authorChiu, CYen_US
dc.contributor.authorYu, YHen_US
dc.contributor.authorChiang, PCen_US
dc.contributor.authorKu, Yen_US
dc.contributor.authorChen, JNen_US
dc.date.accessioned2014-12-08T15:43:23Z-
dc.date.available2014-12-08T15:43:23Z-
dc.date.issued2001-10-01en_US
dc.identifier.issn0733-9372en_US
dc.identifier.urihttp://dx.doi.org/10.1061/(ASCE)0733-9372(2001)127:10(908)en_US
dc.identifier.urihttp://hdl.handle.net/11536/29365-
dc.description.abstractThe kinetics of the ozonation of polyethylene glycol (PEG) with ultraviolet (UV) radiation in the acid-based electroplating solution of the printed wiring board industry is studied. The substrate prescription of a typical electroplating solution is with pH of 0. 18-0.42, [CuSO4 . 5H(2)O] of 200 g/L, [H2SO4] of 60 g/L, and [Cl-] of 0.03 g/L. Certainly, the discarded electroplating solution is hard to treat with the common chemical and biological processes because of its acidic and metallic compositions. In addition, it contains valuable substances suitable for recovery and reutilization. One of the most important processes for reviving it is to remove the aged organic additives such as PEG. A two-step reaction mechanism in terms of ozone A and total organic carbon is proposed to express the reaction kinetics of PEG ozonation with UV radiation with intensity [I-uv]. The initial concentration of PEG is 30 mg/L, according to the recipe of a typical electroplating solution, which is equivalent to total organic carbon of 16.3 mg/L. The reaction rate r expressions of the concentrations of the liquid phase ozone C-ALb, PEG C-BLb, and intermediates C-ILb are r(A) (=dC(ALb)/dt) = -(k(Am) + k(t)[I-uv)C-ALb (k(R1) + k(RI1)[I-uv])CALbCBLb - (k(R2) + k(RI2)[I-uv])CALbCILb, r(B) (=dC(BLb)/dt) = -(k(R1) + k(RI1)[I-uv])CALbCBLb, r(int) (=dC(ILb)/dt) (k(R1) + k(RI1)[I-uv])CALbCBLb - (k(R2) + k(RI2)[I-uv])CALbCILb, with k(Am) = 0.0036 s(-1), k(1) = 4.654 X 10(-5)s(-1)/(Wm(-2)), k(R1) = 13.525 M(-1)s(-1), k(R2) = 0.751 M(-1)s(-1), k(RI1) = 0.683 M(-1)s(-1)/(Wm(-2)), and k(RI2) = 0.042 M(-1)s(-1)/(Wm(-2)). These reaction kinetic expressions are useful and referable for the proper design of an ozonation system with UV radiation for the treatment of PEG in the printed wiring board electroplating solution.en_US
dc.language.isoen_USen_US
dc.titleKinetics of decomposition of polyethylene glycol in electroplating solution by ozonation with UV radiationen_US
dc.typeArticleen_US
dc.identifier.doi10.1061/(ASCE)0733-9372(2001)127:10(908)en_US
dc.identifier.journalJOURNAL OF ENVIRONMENTAL ENGINEERING-ASCEen_US
dc.citation.volume127en_US
dc.citation.issue10en_US
dc.citation.spage908en_US
dc.citation.epage915en_US
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000171137900007-
dc.citation.woscount20-
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