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Removal of oil and grease from agro-food industrial effluent using Serratia marcescens SA30 and its kinetic study

Abdullah, Shakila (2016) Removal of oil and grease from agro-food industrial effluent using Serratia marcescens SA30 and its kinetic study. PhD thesis, Universiti Teknologi Malaysia.


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Agro-food industrial effluent (AFIE) may contain high concentration of oil and grease (O&G), which poses a major threat to aquatic environments, killing or adversely affecting fish and other aquatic organisms. Even though biosorption techniques are commonly used to remove inorganic and organic matters from wastewater, the kinetics and mechanisms of O&G removal from AFIE by Serratia marcescens SA30 immobilised in a packed-bed column reactor (PBCR) need to be verified. The aims of this study were to perform characterisation of beneficial strain of biosurfactant-producing bacteria in order to investigate their ability to remove O&G from water, to develop kinetic models for predicting the efficiency of O&G removal from AFIE and to apply modified mass transfer factor models for assessing the mechanisms and mass transfer resistance for the biosorption of O&G from AFIE by Serratia marcescens SA30. The performance of PBCR achieved 91% of efficiency using Serratia marcescens SA30 as oil-degrading bacteria. The best performance of nearly 100% efficiency can be achieved by experiments run at a fixed volumetric flow rate of 0.18 L h-1, even during treatment using two different concentrations of O&G at 26.9 and 33.5 g L-1 to feed the reactor. The results show the applicability of linear and logarithmic equations with high validity. The resistance to mass transfer could be dependent on intracellular accumulation at the beginning and then on film mass transfer at the final stage of O&G biosorption by Serratia marcescens SA30. The well verified experimental data of kinetic models and mass transfer mechanisms give significant contributions to the development of biosorption theory and an insight of using new approaches to improve environmental quality. This study would provide a green and sustainable pathway for removing O&G from water.

Item Type: Thesis (PhD)
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD895-899 Industrial and factory sanitation
Divisions: Faculty of Applied Science and Technology > Department of Science
Depositing User: Mr. Mohammad Shaifulrip Ithnin
Date Deposited: 28 Sep 2017 03:49
Last Modified: 28 Sep 2017 03:49
URI: http://eprints.uthm.edu.my/id/eprint/9227
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