03256nam a2200409 a 4500 20260818095309.0 .b11429835 AIT Thesis no. EV-95-18 Kittinuch Nanna The effects of phosphate-free detergents on the environment Bangkok : Asian Institute of Technology, 1995 81 leaves : ill. Thesis ; no. EV-95-18 Thesis (M. Sc.) - Asian Institute of Technology, 1995 A thesis submitted in partial fulfillment of the requirments for the degree of Master of Science. The 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. Detergent pollution of rivers, lakes, etc. Samorn Muttamara, Chairperson Umita, Teruyuki, Examination committee Annachhatre, Ajit P., Examination Committee Electrical Generating Authority of Thailand (Queen Sirikit Project), Scholarship donor Asian Institute of Technology. Thesis ; no. EV-95-18 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B15124 .b11429835 mnait v 240404 0 960123 m a v 4 mnait mnait mnarc 20 40 Barcode : 30050003144978 CREATED : 1994-08-26 RECORD # : i11712120 LPATRON : 1022224 LCHKIN : 2009-09-16 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 3 TOT RENEW : 3 Barcode : 30050003144614 CREATED : 1994-08-26 RECORD # : i11712132 LPATRON : 1016346 LCHKIN : 2003-12-14 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160079272 CREATED : 2016-05-23 RECORD # : i12985284 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 35279 35279 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV-95-18 30050003144978 2026-08-18 09:53:09 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. EV-95-18 30050003144614 2026-08-18 09:53:09 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. EV-95-18 30050160079272 2026-08-18 09:53:09 2026-08-18 40