{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:19:02Z","timestamp":1753870742306,"version":"3.41.2"},"reference-count":43,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2024,7,18]],"date-time":"2024-07-18T00:00:00Z","timestamp":1721260800000},"content-version":"vor","delay-in-days":17,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Water Environment Research"],"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:label\/><jats:p>Powdered activated carbon (PAC) has better adsorption performance than granular activated carbon (GAC) and is widely used in water purification. In most cases, PAC is dosed into water directly, then precipitated as sludge, and landfilled. In this study, PAC was mixed with a polymer and dissolved in dimethylformamide (DMF) solvent to form a PAC\u2010loaded membrane, which was then tested for chloroform removal. The chloroform adsorption capacity of the PAC membrane increased with increasing membrane thickness because of higher carbon loading. However, regardless of membrane thickness, the flux of the PAC membranes was similar since flux resistance predominantly occurred at the top dense polymer surface. This dense surface can be removed by sandpaper polishing, where the adsorption capacity of the polished PAC membranes was 20% higher than the unpolished membranes because of more even distribution of feed water on the polished surface. Removal of the dense surface via polishing increased the flux by 97% to 130%, exceeding the flux of typical household carbon block filters. Using DMF to regenerate the membrane recovered 48% to 66% of the initial adsorption capacity. Thermal regeneration of the exhausted PAC membrane at 250\u00b0C was more effective than DMF regeneration (both in terms of cost and performance), with 83% to 94% PAC membrane regeneration efficiency over four regeneration recycles. After four thermal regeneration cycles, flux increased by 300% and the membrane became brittle because of thermal aging of the polymer, indicating that a total of 6\u00a0h of regeneration time (equivalent to three cycles in this study) was the limit for effective PAC membrane performance.<\/jats:p><\/jats:sec><jats:sec><jats:title>Practitioner Points<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>Powdered activated carbon was immobilized on a membrane to remove chloroform from water.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Thicker membranes increased adsorption capacity but did not impact flux.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Flux and capacity increased using polishing to remove the dense polymer surface and more evenly distribute flow across the membrane.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Thermal regeneration of the membrane at 250\u00b0C was effective for up to three cycles and outperformed solvent\u2010based regeneration.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>PAC\u2010loaded filters are relevant for applications such as household carbon block filtration.<\/jats:p><\/jats:list-item>\n<\/jats:list><\/jats:p><\/jats:sec>","DOI":"10.1002\/wer.11081","type":"journal-article","created":{"date-parts":[[2024,7,18]],"date-time":"2024-07-18T10:41:57Z","timestamp":1721299317000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["The impact of PAC\u2010loaded polymer membrane thickness on chloroform removal and comparison of solvent and thermal membrane regeneration methods"],"prefix":"10.1002","volume":"96","author":[{"given":"Yizhi","family":"Hou","sequence":"first","affiliation":[{"name":"Department of Civil, Construction and Environmental Engineering Marquette University  Milwaukee Wisconsin USA"},{"name":"A.O. 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