04212nas a2200553 a 4500 20260817172542.0 110105s2009 th uu|m rtt 0| a1eng d .b12088146 AIT Thesis no.PP-09-08 Hasan, Md. Jabed Chemical additives and surfactants on kraft pulping of E. camaldulensis Pathum Thani, Thailand : Asian Institute of Technology, 2009 1 online resource (46 leaves) : ill. Thesis ; no. PP-09-08 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Pulp and Paper Technology Thesis (M.Sc.) - Asian Institute of Technology, 2009 The aim of this work was to study the effect of adding AQ, HEDP, digester additive A, pitch dispersant, surfactant A, surfactant B, Urea, MeOH and their combination into kraft pulping liquor. All cooks were performed under the same cooking conditions and same Eucalyptus cammeludensis chips which was originated from Thailand. These pulps produced from these cooking were compared in terms of yield, screen reject, residual alkali, kappa number and brightness and tensile index of unbleached hand sheets. Kraft process was modified by adding AQ, HEDP, digester additive A (with or without methanol) with different charges and the results showed an increase in pulp yield and reduction in kappa number. On the contrary, there was an increase in both yield and kappa when the kraft cook was modified by urea and combination of urea+methanol, urea+AQ. The most notable out come of yield increase was found from Urea + methanol kraft cooking and the value was 9.9%. The highest residual alkali increased 35.8% from AQ-kraft cook and 17.2% kappa number reduction was gained by the combination effect of AQ and methanol. The highest brightness also resulted from the same cook. Moreover, tear index was improved 51.9% by the addition of urea and methanol. Eucalyptus camaldulensis Kraft paper industry Viljakainen, Esa, Chairperson Nazhad, Mousa M., Examination Committee Mirshokraie, Seyed Ahmad, Examination Committee Lehtinen, Esa, Examination Committee Finland, Scholarship Donor AIT Fellowship, Scholarship Donor Asian Institute of Technology. Thesis ; no. PP-09-08 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B03684 .b12088146 mnait u 240405 0 110105 m a u 0 000:001:PDF:b1208814:000399:0:0:0:0:0:0 Abstract-AIT Thesis no.PP-09-08 n mnait store mnarc mnait store store 20 22 40 14 Barcode : 30050120932586 CREATED : 2011-05-01 RECORD # : i12652830 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120668750 CREATED : 2014-05-28 RECORD # : i12804095 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160026943 CREATED : 2016-03-18 RECORD # : i12896810 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120902910 CREATED : 2020-05-08 RECORD # : i13286808 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120902902 CREATED : 2020-05-08 RECORD # : i1328681x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120902894 CREATED : 2020-05-08 RECORD # : i13286833 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 16518 16518 0 0 0 0 MAIN MAIN mnait 2026-08-17 50.00 0 AIT Thesis no.PP-09-08 30050120932586 2026-08-17 17:25:42 1 2026-08-17 20 0 0 0 0 MAIN MAIN store 2026-08-17 50.00 0 AIT Thesis no.PP-09-08 30050120668750 2026-08-17 17:25:42 3 2026-08-17 22 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no.PP-09-08 30050160026943 2026-08-17 17:25:42 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no.PP-09-08 30050120902910 2026-08-17 17:25:42 2 2026-08-17 14 0 0 0 0 MAIN MAIN store 2026-08-17 0 AIT Thesis no.PP-09-08 30050120902902 2026-08-17 17:25:42 4 2026-08-17 14 0 0 0 0 MAIN MAIN store 2026-08-17 0 AIT Thesis no.PP-09-08 30050120902894 2026-08-17 17:25:42 5 2026-08-17 14