03195nam a2200433 4500 20260818144930.0 271098s1980 th r 0000|0 eng d .b1038926x AIT Thesis no.EV-80-16 Vego, Imelda S. Kinetics of silica removal from industrial water Bangkok : Asian Institute of Technology, 1980 v, 68 p. Thesis ; no. EV-80-16 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1980 The presence of silica in industrial water poses a serious problem to the water engineers. This study was conducted primarily to investigate the potential of calcium and magnesium for removing silica from waters intended for industrial use, at silica concentrations approaching amorphous silica solubility of 120 mg/t Si02{u2022} Both the laboratory scale batch and continuous flow studies were conducted. The reaction of both calcium and magnesium with silica was found to be of the first-order. For magnesium, the rate constant k, was found to be +0.0655 min and optimum pH of 10 and an alkalinity of 125 mg/t CaC03. Thus the rate equation can be expressed as ln C/Co-1 = -0.0655 t. For calcium, the rate constant k, was found to +0.0277 min an optimum pH of 11. The rate equation can be written as ln C/C0 = -0.0277 t. For the continuous flow studies, the removal of silica by magnesium and calcium was found to be affected by the detention time and the re cycle rate, nevertheless, the mixing intensity has no significant effect on the removal of silica by magnesium and calcium. Since the kinetics of the reaction was known, the equation -t 1 Cio CMF = k (Co - 1) can be used to predict the effects of these process parameters. Silica Sewage Purification Lohani, Bindu N., Chairperson Watanabe, Yoshimasa, Examination Committee Chongrak Polprasert, Examination Committee The Government of the United States of America, Scholarhsip Donor Asian Institute of Technology. Thesis ; no. EV-80-16 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B21981 .b1038926x mnait x 250324 2 951012 m a x 0 mnait mnarc mnait 22 40 14 Barcode : 30050120656268 CREATED : 2014-05-02 RECORD # : i12757810 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120226393 CREATED : 2016-04-27 RECORD # : i12958566 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120904320 CREATED : 2020-07-23 RECORD # : i13283868 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 67233 67233 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.EV-80-16 30050120656268 2026-08-18 14:49:30 3 2026-08-18 22 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.EV-80-16 30050120226393 2026-08-18 14:49:30 2026-08-18 40 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no.EV-80-16 30050120904320 2026-08-18 14:49:30 1 2026-08-18 14