Combination of Coagulation, Adsorption, and Ultrafiltration Processes for Organic Matter Removal from Peat Water

Sustainability

Amalia Enggar Pratiwi¹  Muthia Elma¹  Chairul Abdi²  Mahmud Mahmud²  Muhammad Roil Bilad³  Raissa Rosadi⁴  Aulia Rahma⁴  Erdina Lulu Atika Rampun⁴  Dede Heri Yuli Yanto⁵ 

[1] Department of Chemical Engineering, Faculty of Engineering, Lambung Mangkurat University, Jl. A. Yani KM 36, Banjarbaru 70714, Indonesia;Department of Environment Engineering, Faculty of Engineering, Lambung Mangkurat University, Jl. A. Yani KM 36, Banjarbaru 70714, Indonesia;Faculty of Integrated Technologies, Universiti Brunei Darussalam, Gadong BE1410, Brunei;Materials and Membranes Research Group (M²ReG), Lambung Mangkurat University, Jl. A. Yani KM 36, Banjarbaru 70714, Indonesia;Research Center for Biomaterials, National Research and Innovation Agency (BRIN), Cibinong Science Center, Cibinong, Jl. Raya Bogor KM 46, Bogor 16911, Indonesia;

关键词: coagulation–adsorption;    membrane;    organic matter;    peat water;    ultrafiltration;    polysulfone;   

DOI  :  10.3390/su14010370

来源: DOAJ

【 摘 要 】

The high content of natural organic matter (NOM) is one of the challenging characteristics of peat water. It is also highly contaminated and contributes to some water-borne diseases. Before being used for potable purposes, peat water must undergo a series of treatments, particularly for NOM removal. This study investigated the effect of coagulation using aluminum sulfate coagulant and adsorption using powdered activated carbon (PAC) as a pretreatment of ultrafiltration (UF) for removal of NOM from actual peat water. After preparation and characterization of polysulfone (Psf)-based membrane, the system’s performance was evaluated using actual peat water, particularly on NOM removal and the UF performances. The coagulation and adsorption tests were done under variable dosings. Results show that pretreatment through coagulation–adsorption successfully removed most of the NOM. As such, the UF fouling propensity of the pretreated peat water was substantially lowered. The optimum aluminum sulfate dosing of 175 mg/L as the first pretreatment stage removed up to 75–78% NOM. Further treatment using the PAC-based adsorption process further increased 92–96% NOM removals at an optimum PAC dosing of 120 mg/L. The final UF-PSf treatment reached NOM removals of 95% with high filtration fluxes of up to 92.4 L/(m².h). The combination of three treatment stages showed enhanced UF performance thanks to partial pre-removal of NOM that otherwise might cause severe membrane fouling.

【 授权许可】

Unknown