PRODUKSI HIDROGEL DARI SELULOSA TANAMAN FROGBIT (LIMNOBIUM LAEVIGATUM) HASIL FITOREMEDIASI LIMBAH KOLAM IKAN LELE

• Main Author: Khalisha Zahra Amalia, Alyani
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/83053
• Institution: Institut Teknologi Bandung

Catfish pond wastewater (CPW) often causes environmental issues due to excessive nutrients and organic matter, leading to organic pollution and eutrophication in water bodies. This study evaluates the potential of Limnobium laevigatum as a phytoremediator for CPW treatment. Phytoremediation was conducted using a free water surface system in plastic containers with CPW dilutions of 0%, 10%, and 25% over 21 days. Results show that phytoremediation using L. laevigatum reduced organic content and improved CPW quality. The 25% concentration demonstrated the highest removal percentage (RP), with reductions of 92.53% for TSS, 42.19% for ammonia, 27.78% for nitrite, 34.84% for nitrate, 45.21% for COD, and 44.67% for BOD. Significant increases in pH and DO were also observed. Optimal plant growth occurred in the 10% waste variation, with a Relative Growth Rate (RGR) of 0.13 g/day, higher than the control (0.07 g/day) and the 25% concentration (0.08 g/day). The phytoremediation-derived L. laevigatum biomass was processed into hydrogel biocomposites to enhance soil moisture retention, with cellulose variations of 0%, 5%, and 10%. Higher cellulose content in the hydrogel biocomposite improved the swelling ratio (SR). The hydrogel with 10% cellulose showed the highest SR at 60%, while the hydrogel without ocellulose had an SR of 33.3%. The hydrogels degraded over 30 days. Moisture tests indicated that cellulose-containing hydrogels further improved soil moisture retention. The study demonstrates that L. laevigatum and cellulose-based hydrogels offer potential environmentally friendly solutions for CPW management and soil moisture enhancement.