03298cas a2200421 a 4500 20260818095027.0 110920s1989 th uu|m rtt 0| a1eng d .b10227969 AIT Thesis no. AE-89-23 Montip Chamchong Effect of pH and enzymatic treatment on the performance of micro/ultrafiltration of tangerine juice Bangkok : Asian Institute of Technology, 1989 91 p. Thesis ; no. AE-89-23 A Thesis submitted in partial fulfilment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1989 Tangerine (Citrus reticulata blanco) juice was clarified by crossflow microfiltration (CFMF) and ultrafiltration (CFUF} with a polysulphonic membrane. The membranes used were of mw.cut-off 25000, 50000, 100000 and 0.1 æm, 0 . 2 æm pore sizes. The juice was filtered by using a laboratory filtration module made of acrylic resin,120 mm long and 70 mm wide. The transmembrane pressure used was 93 to 194 kPa and a crossflow velocity used was 0.96 to 3.54 m/s at 25 °C . Juice was treated with hydrochloric acid and polygalacturonase before filtration. The performance of both membrane types was determined in terms of quality and quantity of the permeate. Ultrafiltration membrane of pore size 0.1 æm gave the maximum permeate flux and accepted quality by ANOVA based on its clarity. Highest transmembrane pressure of 194 kPa gave maximum filtrate production and quality of permeate flux showed non significant with the lower transmembrane pressure of 137 kPa. Similar to transmembrane pressure, the highest feed crossflow velocity of 3.54 m/s also gave maximum filtrate rate but the permeate was not as clear as the others. These results could be explained by apparent membrane and gel resistance, the concentration polarization, mass transfer coefficient and real rejection of each operating parameter. Ultrafiltration Orange juice Athapol Noomhorm, Chairperson Illangantileke, Sarath G., Examination Committee Yamamoto, K., Examination Committee The Government of France, Scholarship Donor Asian Institute of Technology. Thesis ; no. AE-89-23 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17853 .b10227969 mnait s 240329 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003004115 CREATED : 1994-05-17 RECORD # : i10277456 LPATRON : 1018412 LCHKIN : 2006-11-30 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 5 TOT RENEW : 2 Barcode : 30050120727069 CREATED : 1994-05-17 RECORD # : i10277468 LPATRON : 1018412 LCHKIN : 2006-07-14 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 3 TOT RENEW : 0 Barcode : 30050120364467 CREATED : 2016-05-27 RECORD # : i1299747x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 34552 34552 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-89-23 30050003004115 2026-08-18 09:50:27 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-89-23 30050120727069 2026-08-18 09:50:27 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. AE-89-23 30050120364467 2026-08-18 09:50:27 2026-08-18 40