Supamard Panichsakpatana

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Thailand has nearly 2 million tonnes of filter cake waste containing 1.8% total N from the sugar cane industry to dispose of annually. Compost studies were conducted to determine how rapidly this material can be converted to a stable product that may be useful in crop production, and to characterize the N transformations. Two kinds of sugar mill by-products(More)
The amount of sludge generated from urban centers is increasing more and more, so wastewater treatment plants are being constructed. Recycling of sludge by application to agricultural land can alleviate the disposal pressure, and, at the same time, utilize the plant nutrients in the waste. Organic nitrogen in sludge is mineralized to inorganic forms such as(More)
The impact of inorganic N and P additions on a tropical soil contaminated with petroleum hydrocarbons was investigated using molecular and culture techniques. Microcosms were incubated for 42 days and sampled at 0, 1, 7, 28 and 42 days. Changes in bacterial community structure were determined using denaturing gradient gel electrophoresis (DGGE) of the rRNA(More)
Sugar mill by-products compost may be a good soil amendment to promote tomato (Lycopersicon esculentum L.) growth. In addition, the compost may further promote plant growth by inoculation with N2-fixing bacteria. Compost from sugar-mill waste was prepared with and without the N2-fixing bacteria, Azotobacter vinelandii, Beijerinckia derxii and Azospirillum(More)
The pH-dependent release of cadmium, copper, and lead from soil materials was studied by use of a stirred flow cell to quantify their release and release rates, and to evaluate the method as a test for the bonding strength and potential mobility of heavy metals in soils. Soil materials from sludge-amended and nonamended A horizons from a Thai(More)
Inoculation of sugar mill by-products compost with N2-fixing bacteria may improve its quality by increasing total N and available P. Compost was inoculated with Azotobacter vinelandii(ATCC 478), Beijerinckia derxii (ATCC 49361), and Azospirillumsp. TS8, each alone and all three together. Numbers of all N2-fixing bacteria in compost declined from an initial(More)
This research reports on a pilot project that aimed to develop a prototype ontology for plant production using Thai rice as a case study. It is expected that the developed ontology will be used as a prototype model for other efforts to develop plant production ontology in the future. The Thai Rice Production Ontology provides an organizational framework of(More)
Ontology plays a critical role in knowledge creation and knowledge management process. It helps make knowledge acquisition and retrieval process significantly more intelligent. The Thai AGRIS Centre, the agriculture knowledge service center of Thailand, has constructed ontology prototype for plant production using rice production issue as a test case. Our(More)
Bangkok (Thailand) covers more than 1500 km2 and has 10 million inhabitants. The disposal of wastewater is creating huge problems of pollution. The estimated amount of sewage sludge was estimated to be around 108 tonnes dry matter (DM) per day in 2005. In order to find a lasting way of disposal for this sewage sludge, the suitability of the sludge produced(More)