Utilization of Sewage Sludge from Beverage Industry as Dye Adsorption Materials

2018 2nd International Conference on Environmental, Industrial and Energy Engineering

生态环境科学;能源学

Tocharoen, S.^1 ; Atong, D.^2 ; Sricharoenchaikul, V.^1

Department of Environmental Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok

10330, Thailand^1

National Metal and Materials Technology Center, Thailand Science Park, Pathumthani

12120, Thailand^2

关键词: Activation parameter;    Adsorption behaviour;    Adsorption capacities;    Adsorption equilibria;    Adsorption kinetics;    Freundlich isotherm model;    Nitrogen atmospheres;    Rhodamine B adsorption;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/219/1/012015/pdf
DOI  :  10.1088/1755-1315/219/1/012015

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This sewage sludge from beverage industry mainly contains organic carbon that can be carbonized and functionalized to sludge char with enhanced porosity and surface area, suitable for utilization as quality adsorbent. Investigation on the adsorption behaviour of Rhodamine B (RhB) as cationic dye in aqueous solution, which represented wastewater from textile industry, onto activated char sludge was performed in this study. The sludge was chemically activated with KOH and subjected to further thermal process at temperature of 800°C for 60 min under nitrogen atmosphere. Adsorption kinetics, isotherms and temperature effect on Rhodamine B adsorption were investigated to evaluate the influence of activation parameters. The result showed that activated char sludge with KOH yielded the highest adsorption capacity of Rhodamine B. At this condition, the activation obviously increased specific surface area from 12.46 m2/g to 2,565 m2/g resulted in substantial enhancement of adsorption capacity. The adsorption equilibrium was represented by Freundlich isotherm model. The kinetic model that fits the experimental data was pseudo-second order. The result confirmed that sewage sludge from beverage industry could be used as an effective adsorbent.