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099		9	_aAIT Thesis no. EV-95-18
100	0		_aKittinuch Nanna
245	1	4	_aThe effects of phosphate-free detergents on the environment
260			_aBangkok : _bAsian Institute of Technology, _c1995
300			_a81 leaves : _bill.
490	1		_aThesis ; _vno. EV-95-18
502			_aThesis (M. Sc.) - Asian Institute of Technology, 1995
500			_aA thesis submitted in partial fulfillment of the requirments for the degree of Master of Science.
520			_aThe study was under taken to assess the impact of zeolite, that composed in phosphate-free detergen, on environment. Site of study is the Chao Phraya river within one km. distance where JICA's plan to obstruct the water for water supply for Patum Thani province. Field survey and the laboratory experiment were performed to find out the water consumption, zeolite concentration both soluble and insoluble concentration in wash water and in the river From this study it was found that the water consumption used in this area is 55 L/c/d, the zeolite production is 1.4 g/c/d. The soluble and insoluble zeolite concentration ratios in wash water was found to be 1 :2. The zeolite concentration in the river water, which determined in form of aluminium concentration was 2 g/L. But it could not be said that the total aluminium concentrarion formed in the river water was caused by zeolite. Zeolite can substantially result in increase aluminium to the environment. As a result, obtained the concentration of aluminium in the river water raised up to the toxic range to plants, fish and man. This study suggested that the aluminium concentration in the river water is appoximately 0.2 mg/L. It can be said that the aluminium concentration that existing in the study area can be regarded as harmful if the water is in acid condition.
650		0	_aDetergent pollution of rivers, lakes, etc.
700	0		_aSamorn Muttamara, _eChairperson
700	1		_aUmita, Teruyuki, _eExamination committee
700	1		_aAnnachhatre, Ajit P., _eExamination Committee
710	2		_aElectrical Generating Authority of Thailand (Queen Sirikit Project), _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. EV-95-18
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B15124
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