ERU - 2009

Permanent URI for this collectionhttp://192.248.9.226/handle/123/14686

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Browsing ERU - 2009 by Author "Amarasinghe, BMWPK"

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    item: Conference-Extended-Abstract
    Investigation of effectiveness of carbonized rice husk in oily water treatment
    (2009) Anurangi, WAJ; Amarasinghe, BMWPK; De Alwis, AAP
    In this study, agricultural waste, rice husk was used as an adsorbent in the oil pollution management. Thermally treated rice husk, prepared by carbonizing rice husk at 600 °C for 3 hrs, were tested for oil removal from aqueous mixtures. Solution pH, adsorbent dose and mixing time affect the degree of oil removal. COD removal efficiencies of 99% were achieved.
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    item: Conference-Extended-Abstract
    Mathematical modeling of extraction of chlorophyll from alternanthera sessilis cultivated in Sri Lanka
    (2009) Jinasena, MAM; Dissanayake, DMMB; Amarasinghe, ADUS; Amarasinghe, BMWPK; Prashantha, MAB
    Mass transfer modeling was used to study the extraction efficiency and the effect of temperature on solvent extraction of chlorophyll from. Alternanthera sessilis, which is a leafy vegetable cultivated in tropics and sub tropics. Aqueous I acetone with 80% (v/v) was used as the solvent and the chlorophyll concentration was analyzed spectrophotometrically. The experimental results were in good agreement with the model data for temperatures | below 30 C. The degradation of chlorophyll beyond 30 C was found to be significant.
  • Thumbnail Image
    item: Conference-Extended-Abstract
    Study the effect of temperature on extraction of chlorophyll from alternanthera sessilis cultivated in Sri Lanka
    (2009) Jinasena, MAM; Amarasinghe, ADUS; Amarasinghe, BMWPK; Prashantha, MAB
    The effect of temperature on extraction of chlorophyll from Alternanthera sessilis cultivated in Sri Lanka was studied using buffered 80% aqueous acetone as the solvent. The yield increased with the increase of temperature up to 40°C. At temperatures above 40°C, the degradation of chlorophyll during the extraction was significant.