| Summary: | 碩士 === 逢甲大學 === 土木及水利工程所 === 90 === Abstract
Reusing waste materials is expected from the viewpoint of sustainability. Coal bottom ash produced from a thermal power plant was utilized as a low-cost adsorbent to assess being a cover soil in landfill. The research was carried out by lysimeter. The results showed that the leachate produced from the lysimeter increased in pH and the coal bottom ash had a better efficiency than soil in reducing leachate strength. Another objective was to evaluate color reduction from textile industry effluent by coal bottom ash. The effects of adsorbent dose, shaking speed, temperature and contact time were studied. The adsorption of batch experiments fitted to both Langmuir and Freundlich equations. The thermodynamic parameters , and corresponding to each adsorption experiment were evaluated. The COD, TOC and color removal was 52.3, 52.5 and 99.8%, respectively, with the ash dose of 200 g/L at 318K in 200rpm. The adsorption was exothermic and spontaneous. Coal bottom ash is a useful material to decrease pollutant concentrations and the results of this research suggest an alternative material to treat colored effluents.
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