COMPARISON OF CHITOSAN FROM CRAB SHELL WASTE AND SHRIMP SHELL WASTE AS NATURAL ADSORBENT AGAINST HEAVY METALS AND DYES

• Published in: International journal of applied pharmaceutics pp. 181 - 185
• Main Authors: NERDY, NERDY, LESTARI, PUJI, SIMORANGKIR, DELISMA, AULIANSHAH, VONNA, YUSUF, FAISAL, BAKRI, TEDY KURNIAWAN
• Format: Journal Article
• Language: English
• Published: 07.03.2022
• ISSN: 0975-7058; 0975-7058
• DOI: 10.22159/ijap.2022v14i2.43560

Objective: Crustacean shell waste is not currently used to its full potential. Most waste from crustaceans used in food pollutes the environment. Widely found in crab shell waste and shrimp shell waste, chitosan is a modification of chitin compounds. This study aims to utilize crustacean shell waste (crab shell waste and shrimp shell waste) as a natural adsorbent against heavy metals and dyes in the form of chitosan. Methods: This study includes the steps of extracting chitosan from crab shell waste and shrimp shell waste, followed by adsorption capacity tests against heavy metals (mercury and arsenic) and dyes (tartrazine and amaranth). Results: Chitosan sourced from both crab shell waste and shrimp shell waste met the physical and chemical characteristic requirements, and the yield was 28.19% and 18.33%, respectively. The adsorption capacity against heavy metals and dyes from crab shell waste chitosan ranged from 43.4% to 55.6% and the shrimp shell waste chitosan ranged from 50.8% to 60.2%. Conclusion: Crustacean shell waste can be processed into chitosan, which is valuable and can be used as a natural adsorbent against heavy metals and dyes for wastewater treatment in several industrial sectors.