NANOCELLULOSE AEROGEL ADSORBENT FROM BANANA PENDUCLES MODIFIED GRAPHENE OXIDE (GO) AS AN ADSORBENT OF HEAVY METAL ION LEAD

• Main Author: Al Kareem Azkia, Kesyar
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/79634
• Institution: Institut Teknologi Bandung

The increase in the textile industry in Indonesia has caused an increase in the amount of heavy metal waste originating from textile dyes. One of the heavy metal wastes that is dangerous for the environment and human health is the heavy metal lead (Pb). The adsorption method is one method of handling or reducing the content of the heavy metal lead (Pb). The adsorption method utilizes adsorbents and cellulose, one of the natural materials that is suitable for use as an adsorbent. Extraction and synthesis of cellulose nanofiber (CNF) was carried out to obtain a high surface area and modification by adding graphene oxide (GO) was carried out to increase the adsorption ability of the adsorbent. CNF was successfully extracted and synthesized from banana penducles with an average diameter of 26.86 nm using the ultrasonication method for 60 minutes. Chemical treatment and ultrasonication caused an increase in the cellulose crystallinity value to 58% of banana powder. The adsorbent was successfully fabricated using the freeze dry method to produce CNF and CNF/GO adsorbents with the addition of 2 mL of GO. The optimum adsorption ability of the heavy metal ion Pb was obtained by CNF/GO at a concentration of 25 ppm, which reached 77.03%. The optimal adsorption capacity of the heavy metal ion Pb obtained by the CNF/GO adsorbent was 28.89 mg (Pb)/g (initial mass of the adsorbent) and 1.67 mg (Pb)/cm3 (initial volume of the adsorbent).