Effect of two stages adsorption as pre-treatment of Natural Organic Matter removal in ultrafiltration process for peat water treatment
Mahmud2, Muthia Elma 1,3*, Erdina L A Rampun1,3, Aulia Rahma1,3, Amalia E Pratiwi1,3, Raissa Rosadi2
1 Chemical Engineering Departement, Faculty of Engineering, Lambung Mangkurat University, Banjarbaru, 70714, Indonesia
2 Environmental Engineering Departement, Faculty of Engineering, Lambung Mangkurat University, Banjarbaru, 70714, Indonesia
3 Material and Membrane Research Group (M2ReG), Faculty of Engineering, Lambung Mangkurat University, Banjarbaru, South Kalimantan, Indonesia 70714
Abstract
Natural Organic Matter (NOM) content in peat water is a major problem of membrane fouling in ultrafiltration (UF). For that, two stages adsorption as pre-treatment was employed to minimize the membrane fouling of NOM content. This research were carried out to investigate the effect of two stages adsorption on ultrafiltration performance for NOM removal that remains in peat water. This method was using powdered activated carbon (PAC) dosage of 80, 160, 240, 320, 400, 480, 560, 640, 720, 800, 880 dan 960 mg L-1. Then, Polysulfone (Psf) material was employed for Ultra filtration process. Membrane was applied in a dead-end mode with various operating pressure (1; 1.5; 2; 2.5; 3 bar). As a results, the optimum dose of PAC was 800 mg L-1 with dosage ratio of 0.75:0.25. Two stages adsorption-UF PSf provided the range from 86.9 to 92.8% of KMnO4 and 74.1-88.1% of UV254. For the experimental condition of 3 bar, the highest flux was achieved up to 39.919 L h-1 m-2.
Keywords: Natural organic matter fouling, peat water, polysulfone, two stage-adsorption, ultrafiltration
Topic: Chemical Engineering