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Preparation of rubber seed coat based activated carbon by microwave induced koh activation and its application in malachite green and remazol brilliant violet-5r adsorption

Preparation of rubber seed coat based activated carbon by microwave induced koh activation and its application in malachite green and remazol brilliant violet-5r adsorption / Siti Hajaratul Akma Abdul Hadi

Abstract Kajian penghasilan karbon teraktif daripada kulit biji getah (KTBG) melalui pengaktifan radiasi gelombang mikro dan jerap isi KOH untuk penjerapan pewarna malacit hijau (MH) dan remazol ungu berkilau 5R (RUB) daripada larutan akuas. KTBG yang terhasil adalah berliang meso dengan dengan luas permukaan yang tinggi (805.13m2/g) dan memaparkan struktur liang yang heterogen. Kesan daripada kepekatan awal pewarna (100-500 mg/L), masa sentuh (0-24 jam), suhu larutan (30- 60oC), dan pH larutan (4-10) telah dinilai melalui kajian penjerapan berkelompok. Penjerapan MH dan RUB meningkat dengan meningkatnya kepekatan pewarna dan masa sentuh. Data untuk proses penjerapan berpadanan dengan model garisan sesuhu Freundlich dan sesuai dihuraikan oleh model kinetik pseudo tertib pertama. Kapasiti penjerapan maksima sebnyak 80.55% untuk MH dan 76.85% untuk RUB oleh KTBG. Keputusan penyelidikan menunujukkan bahawa karbon teraktif daripada biji getah adalah bahan pemula untuk penjerapan pewarna daripada larutan akuas. _______________________________________________________________________________________________________ This study presents the preparation of rubber seed coat based activated carbon (RSCAC) via microwave irradiation assisted KOH activation for adsorption of malachite green (MG) and remazol brilliant violet-5R (RBV) in aqueous solution. RSCAC prepared was high surface area (805.31m2/g) and exhibit heterogeneous mesoporous (average pore diameter of 2.58nm) type of pore structures. The effects of adsorbate initial concentration (100-500 mg/L), contact time (0-24 h) and solution temperature (30-60oC) were evaluated through batch adsorption test. The MG and RBV dyes uptake increased with increased in initial dye concentration and contact time. For adsorption of both dyes onto RSCAC, the equilibrium data were favorably described by Freundlich isotherm, while adsorption kinetics was best fitted to the pseudo-first-order model.The maximum uptake capacity of 80.55% for MG and 76.85% for RBV by RSCAC was achieved. The findings support the feasibility of rubber seed coat as an attractive AC’s precursor dye removal.

Contributor(s): Siti Hajaratul Akma Abdul Hadi - Author Primary Item Type: Final Year Project Identifiers: Accession Number : 875005155 Language: English Subject Keywords: (RSCAC); KOH; (RBV) First presented to the public: 5/1/2013 Original Publication Date: 1/29/2020 Previously Published By: Universiti Sains Malaysia Place Of Publication: School of Chemical Engineering Citation: Extents: Number of Pages - 115 License Grantor / Date Granted:   / ( View License ) Date Deposited 2020-01-30 16:11:25.24 Submitter: Mohd Jasnizam Mohd Salleh

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