Browsing by Author "Kaumal,M.N"

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    Enhancement of crop productivity of red onion using tea-waste biochar as a soil amendment
    (Institute of Chemistry Ceylon, 2019-05) Peiris,C; Wathudura,P.D; Nayanathara,O; Wewalwela,J.J; Kaumal,M.N; Gajanayake,B; Gunatilake,S.R
    Biochar (BC) is a low cost adsorbent produced by the pyrolysis of biomass which can be used for agricultural purposes. Tea waste is an excellent biomass for BC production since it is an abundant solid waste in Sri Lanka. T he presented work was carried out to study the impact of BC as a soil amendment on the quality of Kalpitiya soil and the crop productivity within a time period of 3 months. Soil was collected from 3 different sites located at Kalpitiya during October for the greenhouse experiment where the particle size was ranged below 1 mm.
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    Microwave and open vessel digestion methods for biochar and activated carbon
    (Institute of Chemistry Ceylon, 2019-05) Wathudura,P.D; Peiris,C; Gunatilake,S.R; Kaumal,M.N
    Activated carbon (AC) and biochar (BC) are low cost carbonaceous adsorbent material widely used for the removal of toxic metal ions from aqueous systems due to their highly porous nature.