03561cas|a2200421 i 4500 20260819085907.0 170399s1992 th u m rtt 0| a1eng d .b10759062 AIT Thesis no.EV-92-05 Nguyen Thi Loan Use of water hyacinth as fertilizer Bangkok : Asian Institute of Technology, 1992 106 p. Thesis ; no. EV-92-05 A thesis submitted in partial fulfillment of the requirement for the degree of Master of science Thesis (M.Sc.) - Asian Institute of Technology,1992 I n this study water hyacinth a nd solid waste were mixed at the different rati os and were converted to soil conditioner or fertilizer by composting process. Bacterial seeding was added to accelerate the maturation t ime. Th e experime nts were conducted i n Vietnam and in Thailand. The mode of composting process in Vietnam was Chinese ground- surface aerobic composting and ratio of water h yacinth to solid waste was 4: 1 with bacterial seeding 0 . 01596 of dry weigh t. Experiment in Thailand was undertaken by forced aeration mode of composting. It comprised of two runs. In run 1 ratios of water hyacinth to solid waste in three piles were as followed: pil e 1 = 4:1, pile 2 = 3:2, pile 3 = 2:3 and bacterial seeding of three pil es was 0.015%. After obtaining t h e optimal ratio of water hyacinth to solid waste run 2 was carried out with that ratio and diff erent size of bacte rial seeding. Pile 4 = 0.010%, pile 5 = 0.015%, pile 6 = 0 . 025%. The resul ts s howed that time required for composting process to reach maturation time was much l onger i n Ch i nese ground- surface aerobic composting pile than in forced aeration p iles. Optimal water h yacin t h to solid waste was 4:1 and bacterial seed i ng sizes from 0.010% to 0.025% gave a lmost the same acceleration rate of mat ura t ion t ime. Final compost product can be served as soil conditione r. Further investigation about op timal water hyacinth to solid waste ratio oth e r than those in t h is study would be recomme nded. The time required for composting process in Chinese ground- s u rface aerobic composting pile in different seasons in Vietnam should be studied. Hyacinths Aquatic plant as fertilizer Samorn Muttamara, Chairperson Chongrak Polprasert, Examination Committee Zhuang, Ya-Hui, Examination committee The Swedish International Development Authority (SIDA), Scholarship donor Asian Institute of Technology. Thesis ; no. EV-92-05 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B16552 .b10759062 mnait x 240403 2 951012 m a x 0 mnait mnait mnarc 20 40 Barcode : 30050002932621 CREATED : 1994-05-19 RECORD # : i10973436 LPATRON : 1022421 LCHKIN : 2012-05-21 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050003046488 CREATED : 1994-05-19 RECORD # : i10973448 LPATRON : 1011496 LCHKIN : 1997-03-10 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160056239 CREATED : 2016-11-05 RECORD # : i12974651 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 125745 125745 0 0 0 0 MAIN MAIN mnait 2026-08-19 0 AIT Thesis no.EV-92-05 30050002932621 2026-08-19 08:59:07 1 2026-08-19 20 0 0 0 0 MAIN MAIN mnait 2026-08-19 0 AIT Thesis no.EV-92-05 30050003046488 2026-08-19 08:59:07 2 2026-08-19 20 0 0 0 0 MAIN MAIN mnarc 2026-08-19 0 AIT Thesis no.EV-92-05 30050160056239 2026-08-19 08:59:07 2026-08-19 40