| Author | Padilla, Bienvenido Huerto, Jr. |
| Call Number | AIT Thesis no. AE-83-23 |
| Subject(s) | Water-hyacinth
|
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | 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. |
| Year | 1983 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Edwards, Peter |
| Examination Committee(s) | Kim, Kong-Hwan ; Wee, Kok Leong
|
| Scholarship Donor(s) | Government of Australia |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1983 |