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      저자 : I. K. Erabee (검색결과 1 건)
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        Adsorptive treatment of landfill leachate using activated carbon modified with three different methods

        I. K. Erabee,A. Ahsan,Bipin Jose,M. Manniruzzaman A. Aziz,A. W. M. Ng,S. Idrus,N. N. N. Daud 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.4

        Activated Carbon (AC) is an adsorbent having high surface area which makes the process of removing heavy metals fromwastewater (such as landfill leachate) very effective. This study explored the utilization of three methods of modification of ACproduced from coconut shell by treating it with nitric acid (HNO3), potassium permanganate (KMnO4) and heating at 600oC toimprove the adsorption capacity. The AC can remove multi-pollutants in the filtration process which was used to treat landfillleachate. The water quality parameters such as pH, TSS, Ammonia-Nitrogen and a few heavy metals were considered in the presentstudy. Results showed that the removal of these parameters was proportional with the increase of contact time and the bed depth ofAC. The isotherm analysis of the adsorption of modified AC showed the best Removal Efficiency (RE) can be achieved when ACtreated with KMnO4 for NH3-N, zinc, TSS and sulphide. The morphology of the AC was studied through Scanning ElectronMicroscopy (SEM), Energy Dispersive X-ray spectroscopy (EDX) pattern analysis and Fourier Transform Infrared (FTIR) analysis. It was found that various types of oxygen functional groups were introduced onto the surface of coconut shell derived AC throughoxidation using HNO3. FTIR was used to characterize the surface oxygen functional groups. The surface functional groups such asN-H and C-H stretching played a significant role in heavy metals adsorption. Hence, it can be concluded that the hybrid technique byusing electrolysis process with AC adsorption be an effective way to remove the suspended solids and heavy metals from landfillleachate and thus able to reduce environmental pollution.

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