03270cas a2200409 a 4500 20260818084431.0 110910s1983 th uu|m rtt 0| a1eng d .b10154152 AIT Thesis no. AE-83-23 Padilla, Bienvenido Huerto, Jr. Composting of water hyacinth Bangkok : Asian Institute of Technology, 1983 78 p. Thesis ; no. AE-83-23 A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development Thesis (M.Eng.) - Asian Institute of Technology, 1983 In the light of providing cheap and readily available nutrition for fish food production, a study on aerobic composting of water hyacinth on a pilot scale was undertake n. In this work, 20 pilot-size piles of chopped water hyacinth under treatments of varying pile size and moisture levels were composted over periods ranging from 5 to 2 0 weeks. During these periods analyses were conducted on a weekly basis to evaluate the physical and bio-chemicals changes occurring in these piles as degradation proceeded. Three experiments were conducted : (1) piles comparing 1.4, 1.0 and 0.6m heights; (2) piles comparing low range moisture levels of 55%, 65% and 75%; and (3 ) piles comparing high range moisture levels of 75% , 85% and 93% (fresh) . included in the last experiment was a pile mixture of rice straw and water hyacinth at a moisture content of a bout 75% , to ascertain the possibility of eliminating the drying procedure . All treatments were set up in duplicate. At the outset, 1.4 m initial pile height and 70% moisture were considered optimum levels for efficient composting. Five weeks was taken as an adequate composting time to ensure high nitrogen an d phosphorus conservation and a bout 75% decomposition of degradable organics . However, results of a water hyacinth-rice straw mixture , though acceptable , need to be compared with other moisture level treatments. Water-hyacinth Edwards, Peter, Chairperson Kim, Kong-Hwan, Examination Committee Wee, Kok Leong, Examination Committee Government of Australia, Scholarship Donor Asian Institute of Technology. Thesis ; no. AE-83-23 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B20940 .b10154152 mnait s 240716 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003000121 CREATED : 1994-05-16 RECORD # : i10181878 LPATRON : 1023036 LCHKIN : 2012-04-12 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 11 Barcode : 30050003000105 CREATED : 1994-05-16 RECORD # : i1018188x LPATRON : 1013413 LCHKIN : 2000-05-27 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 3 TOT RENEW : 1 Barcode : 30050120303770 CREATED : 2016-05-25 RECORD # : i12992392 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 20468 20468 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-83-23 30050003000121 2026-08-18 08:44:31 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-83-23 30050003000105 2026-08-18 08:44:31 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. AE-83-23 30050120303770 2026-08-18 08:44:31 2026-08-18 40