Evaluation of Various Biomass Adsorbents for the Treatment of Textile Wastewater: A Case Study
Author : Marasigan, Cristine Calcetas
Major Adviser : Capunitan, Jewel A.
Major Co-Adviser : Herrera, Marvin U.
Committee Members : Carpio, Rowena B.; Migo, Veronica P.
Year : 2020
Month : July
Type : Thesis
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With the textile industry being one of the major contributors to water pollution, increased demand for textile products has led to the generation of a significant amount of wastewater. This paper tackles the use of various coated and uncoated biomass adsorbents in the adsorption of dyes from textile wastewater. Furthermore, major challenges and limitations together with future research prospects were discussed. Various coating techniques were presented, such as oxidative type in-situ technique using ammonium persulfate, facile surfactant-assisted method, and SILAR technique. The presence of rough surface along with the pores, grooves, and projections showed that the coating techniques were successful in altering the surface morphology of adsorbents. Change in the water contact angle were also observed for the hydrophobic adsorbents making it more suitable for dye removal. The effect of various parameters such as initial dye concentration, contact time, adsorbent dosage, temperature, and pH on dye removal during adsorption were also analyzed. At present, the use of cheap alternatives like biomass adsorbents are investigated on its potential as an economic and eco-friendly adsorbent. Developments on adsorbent preparation include improving the adsorbents properties through various pre-treatment methods like the use of polyaniline coating. Since the Philippines is abundant with agricultural crops, lignocellulosic agricultural residues should be used to test the effect of polyaniline coat on its adsorptive capacity. Conclusively, the use of biomass adsorbents should start with a good adsorbent selection along with the proper chemical modification.
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