Review on Adsorption of Heavy Metal in Wastewater by Using GeopolymerNurliyana Ariffin, Mohd Mustafa Al Bakri Abdullah, Mohd Remy Rozainy Mohd Arif Zainol, Mohd Fared Murshed, Hariz-Zain, Meor Ahmad Faris and Ridho BayuajiMATEC Web Conf., 97 (2017) 01023DOI: https://doi.org/10.1051/matecconf/20179701023