Removal of methylene blue from textile synthetic wastewater using conventional, natural and nanoparticles adsorbents | |
| Author | Kritiya Kaspanich |
| Call Number | AIT Thesis no.EV-19-11 |
| Subject(s) | Methylene blue Wastewater--Treatment Textile industry Sewage sludge--Myanmar--Yangon--Management |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | The removal of Methylene Blue (MB) from textile synthetic wastewater using conventional, natural and magnetic nanoparticle adsorbents were investigated. Powdered Activated Carbon (PAC), Rice Husk (RH), Titanium Dioxide (TiO2), Synthesis of Nickel Ferrite Nanoparticles (NiFe2O4NPs (synthesis)) and Functionalized Nickel Ferrite Nanoparticles (NiFe2O4NPs (functionalized)) were examined for their efficiency and efficacy of MB adsorption. The adsorption experiment was conducted in different phases to study the adsorbents dosage (1-100 mg/50 mL), initial MB concentration (4-500 mg/L), and contact time (15-240 minutes) under constant temperature of 25±2℃ without any pH adjustment. Furthermore, the adsorption kinetic models (pseudo-first order and pseudo-second order kinetic) along with the adsorption isotherm models (Langmuir, Freundlich, and Temkin) were examined. The optimum adsorbents dosage was found to be 5 mg/50mL for PAC, 50 mg/mL for RH, NiFe2O4NPs (synthesis and functionalized) and 100 mg/50mL for TiO2. The result showed that increase in adsorbents dosage led to increase in removal efficiency and a decrease in adsorption capacity for the selected adsorbents. Moreover, an increase in contact time led to increase in removal efficiency and adsorption capacity for all the adsorbents, except for TiO2 which showed desorption phenomenon. Besides, an increase in initial concentration of MB can cause decrease in the removal efficiency and increase in adsorption capacity. In addition, the MB removal with RH and NiFe2O4 NPs (synthesis) well fitted with Langmuir adsorption isotherm. Also, the MB removal using PAC, TiO2 and NiFe2O4 NPs (functionalized) best fitted for Freundlich adsorption isotherm. The removal of MB by all the selected adsorbents followed the pseudo-second-order kinetics. The results reveal that PAC showed higher performance whereas TiO2 showed the least performance for the removal of MB from textile synthetic wastewater. The overall performance of the adsorbents for the removal of MB from textile synthetic wastewaters could be arranged, from higher to lower, as PAC > NiFe2O4NPs (functionalized) > RH > NiFe2O4NPs (synthesis) > TiO2. |
| Year | 2019 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Vishvanathan, Chettiyappan; |
| Examination Committee(s) | Ekbordin Winijkul;Bora, Tanujjal;Kume, Tomohisa; |
| Scholarship Donor(s) | Royal Thai Government;Asian Institute of Technology Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2019 |