Kitchen wastewater treatment by adsorption process using banana trunk fibers (Musa Sapientum) and chitosan

Suhani, Noorain (2017) Kitchen wastewater treatment by adsorption process using banana trunk fibers (Musa Sapientum) and chitosan. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

The presence of pollutants in wastewater pose environmental disposal problems because of their non-biodegradable and persistence in the environment. Kitchen wastewater that were discharge to the environment, it’s become one of the contributing factors to water pollution in developing countries. Adsorption of pollutants by banana trunk fiber and chitosan are one of the emerging methods of biological treatments. Therefore, this become environmental friendly for the removal and recovery of pollutants. This research is undertaken to develop an adsorbent in treating wastewater contaminated with a various type of pollutant in kitchen wastewater. This study has focused on the effectiveness of the kitchen wastewater treatment using low-cost natural fiber from banana trunk and chitosan as an adsorbent to treat kitchen wastewater collected from ARKED food court, UTHM. The result of a chemical composition of fiber were analyzed by using TAPPI method before adsorption shows the presence of cellulose (58.5%), hemicellulose (15.4%) and lignin (13.2%) for 1g which confirm the high efficiency in adsorbing pollutants. Meanwhile, the chemical composition of chitosan shows the presence of degree of deacetylation with 90-95%. Based on SEM-EDX analysis, banana trunk fiber has rough surface and chitosan showed the external surface a smooth surface with scars, highly likely due to the removal of inorganic particles. FTIR analysis on the banana trunk fiber and chitosan confirmed the involvement of the carbonyl group, nitro compound, and an amine group in absorbent which play an important role to reduce COD, NH3-N, SS, turbidity, oil and grease. The optimum ratio of F:C is 2:6 with 75% of COD removal, 78% of NH3-N, 76% of SS, 68% of turbidity and 71% of oil and grease removal. For optimization study of parameter affecting adsorption such as pH, adsorbent dosage, shaking speed and contact time under determined optimum condition based on the highest percentage follow the order of fiber with chitosan (FC) > fiber (F) > chitosan (C). The determined optimum condition in this study for F, C and FC is pH (6, 6, 7), dosage 2g, 6g, 5g at shaking speed 150 rpm, 125 rpm, 125 rpm and 2 hours contact time. Meanwhile, the adsorption isotherm study shows that the value of correlation, R2 (0.873 – 0.999) that obtained, the Freundlich model are best fitting model for COD, NH3-N, SS, turbidity, oil and grease adsorption compared to Langmuir models and the adsorption of COD, NH3-N, SS, turbidity, oil and grease had followed the pseudo-second order kinetics rather than pseudo-first order kinetics. The regeneration study on FC adsorbent shows that after the regenerated, the removal percentage had decreased in range of 33% - 45% in COD, NH3-N, SS, turbidity, oil and grease removal. Thus, it indirectly indicated that the FC is a reusable adsorbent. This study show that the removal follow the order of FC > F > C which is banana trunk fiber with chitosan adsorbent can be considered for efficient removal of organic and nutrient pollutants in kitchen wastewater.

Item Type:Thesis (Masters)
Subjects:T Technology > TD Environmental technology. Sanitary engineering > TD511-780 Sewage collection and disposal systems. Sewerage
ID Code:9923
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:27 Mar 2018 10:51
Last Modified:27 Mar 2018 10:51

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