Synthesis of Sustainable Dual-Function Aerogels from Water Hyacinth Cellulose and Shrimp Shell Nano-Chitosan for Heavy Metal Removal and Coliform Bacteria Filtration in Polluted Water
Rivers are essential water sources but are increasingly polluted by urban waste containing heavy metals and harmful bacteria. An effective solution is optimizing an eco-friendly water hyacinth cellulose aerogel and shrimp shell nano-chitosan for heavy metal adsorption and coliform bacteria filtratio...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2024-01-01
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| Series: | BIO Web of Conferences |
| Online Access: | https://www.bio-conferences.org/articles/bioconf/pdf/2024/66/bioconf_eafta2024_01009.pdf |
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| Summary: | Rivers are essential water sources but are increasingly polluted by urban waste containing heavy metals and harmful bacteria. An effective solution is optimizing an eco-friendly water hyacinth cellulose aerogel and shrimp shell nano-chitosan for heavy metal adsorption and coliform bacteria filtration. This study extracted cellulose from water hyacinth (S-EG) and chitosan from shrimp shells, followed by nano-chitosan synthesis and aerogel formulation with three cellulose-to-nano-chitosan ratios: F1 (2:1), F2 (1:1), and F3 (1:2). Gel precursors were characterized, and adsorption and filtration capacities were tested to identify the optimal formula. Results showed yields of 12.46% for S-EG, 11.23% for chitosan, and 80% for nano-chitosan. Among the formulas, F3 had the best properties, including 80.16% gel content, 143.41% swelling ratio, and 3630 cPs viscosity. The F3 aerogel achieved 97% porosity, a surface area of 243.5 m2/g, and a low density of 0.07 g/cm3. Adsorption capacities were significant, reaching 99.5% for Cu, 88.68% for Zn, and 7.33% for Pb, along with a 30% reduction in E. coli. These findings indicate that the 1:2 cellulose-to-nano-chitosan aerogel formulation is highly promising as a sustainable solution for heavy metal adsorption and bacterial filtration in polluted water systems. |
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| ISSN: | 2117-4458 |