Adsorption of brilliant green dye onto activated carbon prepared from cashew nut shell by KOH activation: Studies on equilibrium isotherm

被引：77

作者：

Samiyammal, P. ^{[1
]}

Kokila, A. ^{[2
]}

Pragasan, L. Arul ^{[3
]}

Rajagopal, Rajakrishnan ^{[4
]}

Sathya, Rengasamy ^{[5
]}

Ragupathy, S. ^{[6
]}

Krishnakumar, M. ^{[7
]}

Reddy, Vasudeva Reddy Minnam ^{[8
]}

机构：

[1] Bharathidasan Univ, Dept Phys Annai Coll Arts & Sci, Kumbakonam 612503, Tamil Nadu, India

[2] Univ Agr Sci, Dept Forestry & Environm Sci, GKVK, Bangalore 560065, India

[3] Bharathiar Univ, Dept Environm Sci, Coimbatore 641046, India

[4] King Saud Univ, Coll Sci, Dept Bot & Microbiol, Riyadh, Saudi Arabia

[5] PRIST Univ, Ctr Res & Dev, Dept Microbiol, Trichy 613403, Tamil Nadu, India

[6] ERK Arts & Sci Coll, Dept Phys, Dharmapuri 636905, Tamil Nadu, India

[7] Univ Coll Engn, Dept Phys, Dindigul 624622, Tamil Nadu, India

[8] Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, South Korea

来源：

ENVIRONMENTAL RESEARCH | 2022年 / 212卷

关键词：

Activated carbon; Adsorption brilliant green; Isotherms; METHYLENE-BLUE ADSORPTION; CHEMICAL ACTIVATION; SURFACE-AREA; FLY-ASH; REMOVAL; WASTE; BIOMASS; FIBERS; VIOLET;

D O I：

10.1016/j.envres.2022.113497

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Activated carbon from cashew nut shell via a potassium hydroxide (KOH) at 600 degrees C in an N2 atmosphere and their characteristics using FT-IR, XRD, SEM with EDS, and BET analysis was investigated. The cashew nut shell activated carbon obtained by KOH activation with a CNS/KOH ratio of 1:1 at 600 degrees C (N2 atmosphere) for 2 h had the highest surface area (407.80 m2/g) as compared to other ratio samples. Amongst, CNS/KOH ratios of 1:1 sample are used for the adsorbent, they are effects of contact time, pH, adsorbent dose, and initial dye concentration on brilliant green (BG) removal efficiency were studied. Moreover, the Langmuir and Freundlich adsorption models consisted utilized to affirm the adsorption isotherms. They are, best fitting for BG experimental equilibrium data was achieved with the Langmuir isotherm, giving a maximum BG adsorption capacity of 243.90 mg/g.

引用

页数：6

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