Comparison of Activated Carbon from Coffee Husks and Surface-Modified Zeolite in terms of Decolorization Activities

Author : Mallillin, Jan Patrick Tabule
Major Adviser : Guerrero, Gino Apollo M.
Committee Members : Alcantara, Jerico Z.; Bambase Jr. Manolito E.
Year : 2020
Month : August
Type : Thesis
Degree: BS
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This case study aimed to review and compare the studies on activated carbon from coffee husks and surface-modified zeolite as adsorbents for methyl orange, compare the maximum adsorption capacities with other low cost adsorbent studies, and determine the potential of the two studies as adsorbents for textile industries in the Philippine setting through cost analysis. The adsorbents in the two studies were compared in terms of the effect of the three main parameters, specifically pH, adsorbent loading, and initial dye concentration, on the decolorization or methyl orange removal. Interactions between these parameters were also explored. Both studies had the Langmuir isotherm as the best fit, with maximum adsorption capacities of 77.45 mg/g and 8.143 mg/g for surface-modified zeolite and activated carbon from coffee husks, respectively. The cost analysis for the preparation of these two showed that surface-modified zeolite, as it stands right now, is currently cheaper to produce. Lastly, an environmental impact analysis was added, but due to lack of studies on this matter, only two studies were explored and compared. Currently, activated carbon from wood waste has less environmental impact while activated carbon from coconut shells has a better, albeit still low conversion of waste to activated carbon.

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