Naphthalene is a poly-aromatic hydrocarbon (PAH) extensively found in the aquatic environment. Because Naphthalene is a possible carcinogen, it has devastating health consequences for living things. As a result, it is vital to use sustainable, low-cost, and novel technology to remove excess Naphthalene from wastewater. This study assessed the efficacy of locally available silty-sandy soil in removing Naphthalene from wastewater using a lab-scale artificial wetland. The soil’s permeability was measured at 1.042 × 10–5 cm/s. To achieve 85.78% removal efficiency from an aqueous solution with a starting concentration of 12 mg/L, the ideal conditions for Naphthalene removal were found to be a soil dose of 10 g/L, solution pH 6.3, and contact period of 60 min. The Langmuir model was the best-fit isotherm with an R2 value of 0.97, and the pseudo-second-order model was the best-fit kinetic model with an R2 value of 0.99, according to data from a batch adsorption study. The exhaustion time of a 40-mm-thick soil bed utilized to extract Naphthalene was roughly 1.6 days in a one-dimensional vertical column research utilizing a saturated soil sample. Using silty-sandy soil, the lab-scale created wetland model showed a reduction in Naphthalene of up to 82.23%. Finally, the HYDRUS-CW2D module was used to validate the results, which closely matched the experimental data. These findings suggest that silty-sandy soil is one of the most effective adsorbents for treating Naphthalene-contaminated effluents via the adsorption process.
Assessment of Adsorptive Removal of Naphthalene Through Constructed Wetland Using Physical and Numerical Modeling
Lecture Notes in Civil Engineering
Indian Geotechnical Conference ; 2021 ; Trichy, India December 16, 2021 - December 18, 2021
2022-12-11
14 pages
Article/Chapter (Book)
Electronic Resource
English
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