Removal efficiency of methylene blue using activated carbon from waste banana stem: Study on pH influence

International Conference on Agriculture, Environment, and Food Security

农业科学;生态环境科学

Misran, E.^1 ; Bani, O.^1 ; Situmeang, E.M.^1 ; Purba, A.S.^1

Department of Chemical Engineering, Universitas Sumatera Utara, Jl. Almamater Kampus USU, Padang Bulan, Medan

20155, Indonesia^1

关键词: Adsorption process;    Fixed carbons;    Initial concentration;    Methylene Blue;    Methylene blue solution;    Potential adsorbents;    Proximate analysis;    Removal efficiencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/122/1/012085/pdf
DOI  :  10.1088/1755-1315/122/1/012085

来源: IOP

【 摘 要 】

The effort to remove methylene blue in artificial solution had been conducted using adsorption process. The abundant banana stem waste was utilized as activated carbon precursor. This study aimed to analyse the influence of solution pH to removal efficiency of methylene blue using activated carbon from banana stem as adsorbent. Activated carbon from banana stem was obtained by chemical activation using H3PO4solution. Proximate analysis result showed that the activated carbon has 47.22% of fixed carbon. This value exhibited that banana stem was a potential adsorbent precursor. Methylene blue solutions were prepared at initial concentration of 50 ppm. The influence of solution pH was investigated with the use of 0.2 g adsorbent for 100 mL dye solution. The adsorption was conducted using shaker with at a constant rate of 100 rpm at room temperature for 90 minutes. The results showed that solution pH influenced the adsorption. The activated carbon from banana stem demonstrated satisfying performance since removal efficiencies of methylene blue were higher than 99%.