Analisis Koefisien Dispersi Dan Retardasi Fosfat Pada Tanah Di Sekitar Tempat Pembuangan Akhir Limbah Domestik Menggunakan Perunut 32p (Analysis Of Phosphate Dispersion And Retardation ..
| Main Author: | Perpustakaan UGM, i-lib |
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| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Pusat Studi Energi UGM
, 2005
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/20389/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=3239 |
Daftar Isi:
- ABSTRAK The domestic waste of a final disposal content more of 30% of phosphate. Diluted phosphate in water can be transported, dispersed and spread into environment. Phenomenon of phosphate mass transport diluted in water especially dispersion and retardation coefficient need to be analysed to recognize the migration pattern. Dispersion and retardation coefficient can be determined experimentally in laboratory using radioactive tracer. Physical modelling was done to obtained phosphate concentration data at different times and distances. Phosphate concentration data obtained from physical model were used to verify mathematical model to obtain dispersion and retardation coefficient by Hooke Jeeves numerical optimation method according to the partial differential equation that was approximated by minimize of sum of squares of error A Research of phosphate mass transfer phenomenon, physically and mathematically, have been done. The NaH2PO4.2H20 was mixed with soil from the domestic waste a final disposal. Water fed to this soil-then diluted phospate fed to soil box that has porosity 0,3030 with flow rate 56,5 ml/min. The Phosphate level were determined on 0, 35, 70, 105 and 140 cm at 0, 30, 60, 90, 120, 150 180 and 210 minutes. Phosphate level decreased according to position. Computer program were running well and resulted 0,011 cm2/min for dispersion coefficient and 56 for retardation with 3.9114E-04 Sum of Squares of Error (SSE) or 38 % for average relative error. Keywords : Mass Transfer, Dispersion Coefficient, Retardation Coefficient, Radioactive Tracer