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Preparation of microwave-assisted palm trunk based activated carbon for adsorption of methylene blue dye

Preparation of microwave-assisted palm trunk based activated carbon for adsorption of methylene blue dye / Mohd Shafiq Abd Latif
Dalam kajian ini, proses penjerapan oleh karbon teraktif berasaskan pelepah kelapa sawit (KTPKS) untuk menyingkirkan pewarna metilena biru (MB) telah dikaji menggunakan proses kelompok pada kepekatan awal pewarna (25-300 mg / L), masa sentuhan (0-24 jam) dan suhu larutan (30-60 ⁰C) yang pelbagai. KTPKS telah disediakan melalui pengaktifan fizikal yang melibatkan radiasi gelombang mikro dan penggasan karbon dioksida (CO2). Keadaan penyediaan KTPKS yang optimum untuk diperolehi daripada kaedah sambutan permukaan (RSM) adalah pada kuasa radiasi dan pengaktifan masa masing-masing 501 W dan 4.00 minit. Sampel ini menghasilkan 91.25% penyingkiran pewarna MB dan 32.37% hasilan KTPKS. Sampel ini mempunyai luas permukaan 772.35 m2/g, isi padu liang 0.45 cm3/g dan kandungan karbon tetap 74.3%. Liang yang dihasilkan adalah tergolong dalam jenis mesoliang yang mempunyai saiz 3.88 nm purata diameter. Model isoterma penjerapan yang yang terbaik dengan KTPKS adalah dari model Freundlich manakala data kinetik yang terbaik adalah model pseudo tertib pertama. Proses penjerapan MB ke KTPKS adalah endotermik dan spontan. _______________________________________________________________________________________________________ In this study, the adsorption process by the palm trunk based activated carbon was investigated in batch process at various initial dye concentration (25-300 mg/L), contact time (0-24 hours) and solution temperature (30-60 ⁰C). The PTAC was prepared by physical activation which involve microwave radiation and carbon dioxide (CO2) gasification were applied. The optimum PTAC preparations obtained from response surface methodology (RSM) were at radiation power and activation time of 501 W and 4.00 minutes, respectively. This sample has 91.25% MB dye removal and 32.37% PTAC yield. This sample has 772.35 m2/g BET surface area, 0.45 cm3/g pore volume and 74.3% fixed carbon content. The pores developed were mesopores type which have 3.88 nm average pore size diameter. The adsorption isotherm was fitted with Freundlich model while the kinetics data was best represented by the pseudo first-order model. The adsorption process of MB onto PTAC was endothermic and spontaneous.
Contributor(s):
Mohd Shafiq Abd Latif - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875007279
Barcode : 00003107159
Language:
English
Subject Keywords:
palm trunk based activated carbon; microwave radiation; response surface methodology
First presented to the public:
5/1/2017
Original Publication Date:
4/30/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 70
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-30 11:13:40.573
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

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