Mesoporous high-surface-area activated carbon from biomass waste via microwave-assisted-H3PO4 activation for methylene blue dye adsorption: An optimized process

被引:48
作者
Jawad, Ali H. [1 ]
Abd Malek, Nurul Najwa [1 ]
Khadiran, Tumirah [2 ]
ALOthman, Zeid A. [3 ]
Yaseen, Zaher Mundher [4 ,5 ,6 ]
机构
[1] Univ Teknol MARA, Fac Appl Sci, Shah Alam 40450, Selangor, Malaysia
[2] Forest Res Inst Malaysia FRIM, Forest Prod Div, Kepong 52109, Selangor, Malaysia
[3] King Saud Univ, Coll Sci, Chem Dept, Riyadh 11451, Saudi Arabia
[4] Univ Kebangsaan Malaysia, Fac Sci & Technol, Dept Earth Sci & Environm, Bangi 43600, Selangor, Malaysia
[5] Univ Southern Queensland, Sch Math Phys & Comp, USQs Adv Data Analyt Res Grp, Toowoomba, Qld 4350, Australia
[6] Al Ayen Univ, Sci Res Ctr, New Era & Dev Civil Engn Res Grp, Thi Qar 64001, Iraq
关键词
Adsorption; Activated carbon; Box-Behnken design; Microwave; Rubber seed pericarp; POROSITY; METHODOLOGY; CHEMISTRY;
D O I
10.1016/j.diamond.2022.109288
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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.
引用
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页数:12
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