Journal
DIAMOND AND RELATED MATERIALS
Volume 128, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2022.109288
Keywords
Adsorption; Activated carbon; Box-Behnken design; Microwave; Rubber seed pericarp
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Funding
- Faculty of Applied Sciences, Universiti Teknologi MARA, Shah Alam for all facilities
- Institute of Research Management Centre (RMC) , Universiti Teknologi MARA (UiTM) , Malaysia [600-RMC/GIP 5/3 (075/2021]
- King Saud University, Riyadh, Saudi Arabia [600-RMC/GIP 5/3 (075/2021]
- [RSP-2021/1]
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This study converted rubber seed pericarp biomass wastes into mesoporous high-surface-area activated carbon via microwave heating process. The activated carbon showed effective removal of methylene blue dye from aqueous environment, indicating its potential application in wastewater treatment.
In this study, rubber seed pericarp (RSP) biomass wastes (specific surface area = 0.79 m(2)/g) were converted into mesoporous high-surface-area activated carbon (RSP-AC) (specific surface area = 1245.7 m(2)/g) via microwave heating process using H3PO4 as an activating agent. The optimum activation conditions were determined by using response surface methodology with Box-Behnken design (RSM-BBD). The best activation conditions for RSP-AC preparation were found to be impregnation ratio 1:2 (RSP:H3PO4 ), radiation power 800 W and radiation time 15 min. The effectiveness of RSP-AC material towards removal of methylene blue (MB) dye from aqueous environment was evaluated and optimized by RSM-BBD. The RSP-AC shows effective and fast removal of MB (100 mg/L) of 92 % within 10 min, and at optimum working conditions of RSP-AC dose 0.05 g, and solution pH 7.8 as confirmed by RSM-BBD. The maximum adsorption capacity of RSP-AC towards MB was found to be 347.8 mg/g at 25 +/- 2 ?C. This result indicates that RSP-AC is a promising activated carbon material with potential application in wastewater treatment.
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