The Role of Pectin in Pb Binding by Carrot Peel Biosorbents: Isoterm Adsorption Study

12th Joint Conference on Chemistry

Hastuti, B.^1 ; Totiana, F.^1 ; Winiasih, R.^1

Department of Chemistry Education, Faculty of Faculty of Teacher Training and Education, Universitas Sebelas Maret, Jl. Ir. Sutami 36A, Surakarta

57126, Indonesia^1

关键词: Adsorption studies;    Carrot peels;    Chemical adsorption;    Cost-efficient;    Freundlich models;    FT-IR spectrum;    Hydroxyl groups;    Metal binding;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/349/1/012011/pdf
DOI  :  10.1088/1757-899X/349/1/012011

来源: IOP

【 摘 要 】

Cheaply and abundantly biosorption available materials such as carrot peels can be a cost-efficient method for removing heavy metals from wastewater. To investigate the role pectin plays in metal binding by carrot peels, commerce pectin was compared. FTIR spectra confirmed the presence of carboxyl and hydroxyl groups in commerce pectin and carrot pectin. Isoterm experiments showed that all materials could remove Pb (II) ion. All of materials binding Pb (II) follow Freundlich models adsorption. The commerce pectin bindsPb (II) by involving energy 16.6 KJ/mole whereas pectin from carrot peel involves energy 21.09 KJ/mole. It indicates that commerce pectin binds the Pb (II) by physics adsorption whereas pectin from carrot peel by physics and chemical adsorption.