Performance of powdered and granular sugarcane bagasse activated carbon in removing pollutants of car wash wastewater

Zayadi, Nadzirah (2017) Performance of powdered and granular sugarcane bagasse activated carbon in removing pollutants of car wash wastewater. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

Water pollution is a challenge due to non source point of car wash wastewater, carries toxicity with little water quality treatment. Among various technologies of membrane application, oil separator and else, activated carbon is more promising. Research have been focused towards converting the agricultural wastes of sugarcane bagasse or Saccharum Officinarum into valuable product of activated carbon, due to adsorption properties. The objectives of this study are to characterize the car wash wastewater, optimized the activated carbon preparation and determine the optimum conditions for powdered and granular sugarcane bagasse activated carbon of Langmuir and Freundlich adsorption isotherms. In achieving the objectives, from wastewater characterization, an average value of chemical oxygen demand (COD), oil and grease (O&G), and surfactant as methylene blue absorbing substances (MBAS) were 461 ± 3 mg/L, 83 ± 5 mg/L, and 78 ± 47 mg/L respectively. Activated carbon prepared through chemical activation using phosphoric acid with different process parameters such as impregnation, carbonization temperature, and time. The optimum conditions achieved (20 % impregnation, 500 °C temperature for 2 hours) with 52 % and 41 % of COD and O&G removal, and constitutes microporous structure with iodine number of 749 mg/g and ash content of 12 %. About 81 % of carbon, 17 % oxide, and 95 % ethylene comprising of aromatics, hydroxyls and alcohol groups responsible to adsorb pollutants. The optimized conditions on pH, adsorbent dosage, size and contact time analysed between powdered and granular forms. The powdered size of 0.063 mm, attained maximum removal of COD, O&G and MBAS with 95 %, 94 % and 100 % at pH 8, dosage of 2 g/150 ml, for 3 hours contact. While, granular of 1.18 mm size have similar optimized conditions with 93 %, 85 %, and 90 % for COD, O&G and MBAS removal. The adsorption isotherm of Langmuir best fitted for powdered adsorbent, with maximum qmax of 0.031 mg/g and 0.006 mg/g for COD and O&G. This study highlighted the sugarcane bagasse activated carbon as an alternative adsorbent in removing pollutants of COD, O&G and MBAS of car wash wastewater.

Item Type:Thesis (Masters)
Subjects:T Technology > TD Environmental technology. Sanitary engineering > TD511-780 Sewage collection and disposal systems. Sewerage
ID Code:9904
Deposited By:Mr. Mohammad Shaifulrip Ithnin
Deposited On:27 Mar 2018 11:51
Last Modified:27 Mar 2018 11:51

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