The Effectiveness Biosorption of Durian (Durio zibhetinus) Rind Pectin on Handling Liquid Waste Containing Heavy Metal (Pb II)Flora Elvistia Firdaus, Amida Redella and Sintani NursabilaMATEC Web Conf., 248 (2018) 04003DOI: https://doi.org/10.1051/matecconf/201824804003