The Utilization of Modified Chitosan from Shrimp Shell As Photodegradation of Pesticides Paraquat Dichloride

Risfidian Mohadi (a:1:{s:5:"en_US"s:20:"Sriwijaya University"})
Neza Rahayu Palapa (Graduate School of Faculty of Mathematics and Natural Sciences, Sriwijaya University, Palembang, South Sumatra, Indonesia)
Rudi Hartono (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, South Sumatra, Indonesia)
Nurlisa Hidayati (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sriwijaya University, South Sumatra, Indonesia)
Rozirwan (Department of Marine Science, Faculty of Mathematics and Natural Sciences, University of Sriwijaya, South Sumatra Indonesia)

Science and Technology Indonesia
Vol. 6 No. 3 (2021): July

In this study, the chitosan modification of shrimp shell has been made by impregnated the chitosan from shrimp shell with Ti/ZrO2 and ZrO2 to formed composite of chitosan-Ti/ZrO2 and chitosan-ZrO2. These composites were made by immobilization technique and characterized by FTIR and SEM-EDX. The chitosan-Ti/ZrO2 and chitosan-ZrO2 composite were used as a catalyst to degrade the pesticide paraquat dichloride in the presence of UV light (????= 257 nm). The photodegradation process of paraquat dichloride takes place under 10 watts UV light irradiation and was measured using spectrophotometer UV. The maximum degradation percentage of pesticide paraquat dichloride photodegradation by chitosan-Ti/ZrO2 and chitosan-ZrO2 composites are 61.97% and 57.97% within 30 minutes irradiation time.