{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:18:45Z","timestamp":1753870725914,"version":"3.41.2"},"reference-count":53,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2024,7,8]],"date-time":"2024-07-08T00:00:00Z","timestamp":1720396800000},"content-version":"vor","delay-in-days":7,"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>The treatment of raw foul air that could escape to the atmosphere from the head space of the incoming wastewater sewer lines into a Southern California Water Resource Recovery Facility was evaluated by using a 1\/20th scale pilot unit consisting of three different granular activated carbon filter technologies, operating side by side, under similar operating conditions, each having an average 3.8\u2010s contact time. The three activated carbon filters contained each 0.07\u2009m<jats:sup>3<\/jats:sup> of coconut, coal, and coconut mixed with permanganate media. The foul air entering the granular activated carbon filters contained 82% to 83% relative humidity. No moisture removal mechanism was used prior to treatment. The removal of six different odor characters from eight chemical odorants present in the foul air were assessed. These were rotten egg (hydrogen sulfide), rotten vegetables (methyl mercaptan), canned corn (dimethyl sulfide), rotten garlic (dimethyl disulfide), earthy\/musty (2\u2010methyl isoborneol and 2\u2010isopropyl 3\u2010methoxy pyrazine), and fecal (skatole and indole). This is the first time a study evaluates the removal of specific odors by simultaneously employing sensory analyses using the odor profile method, which defines the different odor characters and intensities, together with chemical analyses of the odorants causing these odors. The results show that the three granular activated carbon filters, before hydrogen sulfide breakthrough, provided significant improvement in odor intensity and odorant removal. Breakthrough was reached after 57\u2009days for the coconut mixed with permanganate, 107\u2009days for the coconut, and 129\u2009days for the coal granular activated carbon filter. Breakthrough (the critical saturation point of the activated carbon media) was considered reached when the hydrogen sulfide percentage removal diminished to 90% and continued downward. The coconut mixed with permanganate granular activated carbon filter provided the best treatment among the media tested, achieving very good reduction of odorants, as measured by chemical analyses, and reasonable removal of odor intensities, as measured by the odor profile method. The coconut mixed with permanganate granular activated carbon is recommended for short\u2010term odor control systems at sewer networks or emergency plant maintenance situations given its shorter time to breakthrough compared with the other granular activated carbons. The coal and coconut granular activated carbon filters are generally used as the last stage of an odor treatment system. Because of the observed poor to average performance in removing odorants other than hydrogen sulfide, the treatment stage(s) prior to the use of these granulated activated carbons should provide a good methyl mercaptan removal of at least 90% in order to avoid the formation of dimethyl disulfide, which, in the presence of moisture in the carbon filter, emit the characteristic rotten garlic odor. The differences observed between the performances based on odorant removal by chemical analysis compared with those based on sensorial analyses by the odor profile method indicate that both analyses are required to understand more fully the odor dynamics.<\/jats:p><\/jats:sec><jats:sec><jats:title>Practitioner Points<\/jats:title><jats:p>\n<jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>Three virgin granulated activated carbon media were evaluated in a field pilot unit using raw collections foul air.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Coal, coconut, and coconut mixed with permanganate were tested until breakthrough.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Samples were analyzed both chemically (odorants) and sensorially (odors).<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Coconut mixed with permanganate proved to be the media that better reduced odorants and odors.<\/jats:p><\/jats:list-item>\n<\/jats:list><\/jats:p><\/jats:sec>","DOI":"10.1002\/wer.11073","type":"journal-article","created":{"date-parts":[[2024,7,9]],"date-time":"2024-07-09T06:22:54Z","timestamp":1720506174000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Evaluation of three granular activated carbon filters for the treatment of collections foul air entering a water resource recovery facility"],"prefix":"10.1002","volume":"96","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1723-6979","authenticated-orcid":false,"given":"Tadeo G.","family":"Vitko","sequence":"first","affiliation":[{"name":"Orange County Sanitation District  Fountain Valley California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Scott","family":"Cowden","sequence":"additional","affiliation":[{"name":"Jacobs Engineering  Corvallis Oregon USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhihang","family":"Yin","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, School of Engineering UCLA  Los Angeles California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Irwin H. 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