INTODUCTION1.0 Background of the studyNowadays, the industrial sector has grown more and more, thus producing more waste which needs to be disposed into the environment. Most of this waste contains many chemical substances dangerous to humans and likely to corrupt the biodiversity of our ecosystem. Heavy metals in industrial waste are one of the problems faced today and are a serious problem that needs to be paid attention to. Due to rapid industrialization, heavy metals have been excessively released into the environment, with remarkable impact on humans and other organisms. Cadmium, zinc, copper, nickel, lead, mercury and chromium are often detected in industrial wastewater, posing an obvious or potential threat to water quality, human health and ecosystem biodiversity (Huidong et al., 2008). other sources can contaminate water with heavy metals such as batteries, excess soap scum from car washing, fertilizers from gardening, and other items related to our daily activity that contribute to exposure to water. water with heavy metals. Heavy metals in the aquatic environment can come from wastewater from many industries, such as batteries, tanneries, electricity, electroplating, fertilizers, pesticides, mining, ore refining, etc. . (Banerjee et al., 2012; Manzoor et al., 2013). Consumption of water containing heavy metals is dangerous. to human health. It can pose a threat to human health and the environment due to its hazardous effects. The presence of heavy metals in water can damage many human parts, even in low concentrations. It is therefore very important to eliminate heavy metals in water. The United States Environmental Protection Agency (USEPA) has set maximum contamination levels (MCLs) of heavy metals for surface or subsurface...... middle of paper ..... .polysaccharides structural, amido, amino, sulfhydryl carboxyl, alcohols and ester groups. These functional groups replace hydrogen ions with metal ions in a solution or by donating a pair of electrons to form complexes with metal ions in solutions. Due to the abundance of linking groups, AWBs could be a huge potential source of adsorbent materials to decontaminate heavy metals from wastewater (TAH Nguyen a, et al, 2013). The hydroxyl and carboxyl groups present in these biopolymers are responsible for the reduction of Cr(VI) and subsequent adsorption of Cr(III) (Marta López-García a, 2013) (Lin and Wang, 2012; Wang and Lee, 2011).2.3 Properties of SandSand is a sedimentary particle that can be found on beaches or in the desert. Sand is very important as a filter media for its characteristic which can reduce the turbidity of water bacteria, viruses and protozoa..