TY  - SER
AU  - Padilla,Bienvenido Huerto
AU  - Edwards,Peter
AU  - Kim,Kong-Hwan
AU  - Wee,Kok Leong
ED  - Government of Australia, 
TI  - Composting of water hyacinth
T2  - Thesis
PY  - 1983///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Water-hyacinth
N1  - 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
N2  - 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
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B20940
ER  -