淡江大學機構典藏:Item 987654321/126825
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/126825


    Title: Modified Fine Polyurethane Sponges with Polyvinyl Alcohol–Sodium Alginate Gel Coating as Bio-Carriers for Anammox Process
    Authors: Patcharaporn, Phocharoen;Jarawee, Kaewyai;Sineenat, Thaiboonrod;Sirivitayaprakorn;Sanya;Li, Noophan Pongsak (Lek);Chi-Wang
    Keywords: polyurethane sponges;PVA-SA gel coating;bio-carriers;anammox cultures
    Date: 2025-03-03
    Issue Date: 2025-03-20 09:26:36 (UTC+8)
    Abstract: This research investigates suitable bio-carriers for the anaerobic ammonium oxidation (anammox) process. This study evaluates the efficiency of the anammox process by assessing nitrogen removal efficiency using five different bio-carriers: fine and coarse polyurethane (PU) sponges, a melamine sponge, Scotch Brite, and a loofah. Among the tested carriers, the reactor of the fine PU sponge media exhibited the highest nitrogen removal efficiency, achieving an 87% removal rate. This high efficiency was attributed to the substantial biomass containment, evidenced by a measured mixed liquor volatile suspended solids (MLVSS) amount of 1414 mg/L. Subsequently, the fine PU sponge, exhibiting the highest efficiency, was selected for further modification with a polyvinyl alcohol–sodium alginate (PVA-SA) gel coating to study the impact of methanol inhibition on nitrogen removal efficiency. An optimal modification condition was determined, utilizing concentrations of 8% PVA and 1.8% SA for the fine PU sponge media. The modified PU reactor exhibited the highest resistance to methanol inhibition, followed by the attached growth fine PU sponge reactor and suspended growth reactor. These findings suggest that there are benefits to using modified PU media for the anammox process in the field.
    Relation: Water 17(5), p.737
    DOI: 10.3390/w17050737
    Appears in Collections:[Graduate Institute & Department of Water Resources and Environmental Engineering] Journal Article

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