SUMMARY Hyacinth (Eichhornia crassipes) is one of the plants that can has the potential to be used as a deterrent to particle agglomeration for photocatalyst synthesis in wastewater treatment. In this study, catalyst ZnO/Bentonite using hyacinth plant extract (E.E.G) have been synthesized by carrying out the reaction between ZnCl2, KOH, bentonite and water hyacinth extract functioning as templ…