Dye Removal Using Cellulose Nanocrystals as an Adsorbent Extracted from Indian Water Chestnut Shells

Abstract

The cationic dye adsorption using nanocellulose is being investigated, with various nanocellulose-based adsorbents exhibiting good adsorption capacities. The dye molecules exhibit intense electrostatic interactions with the modified cellulose surface, which primarily accomplishes the adsorption process. The paper shows experimental research outcomes of removing two cationic dyes (Brilliant Green and Crystal Violet) from an aqueous solution using cellulose nanocrystals extracted from the Indian water chestnut shells (IWCS) as an adsorbent. The maximum adsorptive capacity of Brilliant Green was 43.59 mg/g, and that of Crystal Violet was 48.25 mg/g. The experimental data showed that 87.89 % of Brilliant Green dye and 96.5 % of Crystal Violet dye were removed. The results specify that the cellulose nanocrystals obtained from the IWCS were suitable for removing Brilliant Green and Crystal Violet dyes from an aqueous solution.