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This work reviewed and analyzed their similarities and differences in the context of the anaerobic digestion performance, dewaterability of digested sludge, and odor emission from dewatered biosolids. In short, iron\u2010based coagulants tend to show less negative impact than aluminum\u2010based coagulants. This can be attributed to the reduction of ferric to ferrous ions in the course of anaerobic digestion, which leads to a suite of changes in protein bioavailability, alkalinity and hydrogen sulfide levels, and in turn the sludge dewaterability and odor potential. Whether these observations still hold true in the context of thermally hydrolyzed sludge management remains to be studied.<\/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>The impacts of aluminum\u2010\/iron\u2010based coagulant addition on municipal sludge anaerobic digestibility, dewaterability, and odor emission are reviewed.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Iron\u2010based coagulants show less negative impact on the sludge digestibility than aluminum\u2010based coagulants.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Conclusions may aid practitioners in selecting coagulants in practice and better understanding the mechanisms behind the phenomena.<\/jats:p><\/jats:list-item>\n<\/jats:list><\/jats:p><\/jats:sec>","DOI":"10.1002\/wer.1684","type":"journal-article","created":{"date-parts":[[2021,12,29]],"date-time":"2021-12-29T12:53:59Z","timestamp":1640782439000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Impacts of aluminum\u2010 and iron\u2010based coagulants on municipal sludge anaerobic digestibility, dewaterability, and odor emission"],"prefix":"10.1002","volume":"94","author":[{"given":"Hao","family":"Luo","sequence":"first","affiliation":[{"name":"Department of Civil and Environmental Engineering Center for Applied Water Research and Innovation  Ashburn Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuepeng","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering Center for Applied Water Research and Innovation  Ashburn Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Malcolm","family":"Taylor","sequence":"additional","affiliation":[{"name":"Office of Innovation and Research Engineering and Environmental Services Division, WSSC Water  Laurel Maryland USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Caroline","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Office of Innovation and Research Engineering and Environmental Services Division, WSSC Water  Laurel Maryland USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mary","family":"Strawn","sequence":"additional","affiliation":[{"name":"Arlington County Water Pollution Control Bureau  Arlington Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tom","family":"Broderick","sequence":"additional","affiliation":[{"name":"Arlington County Water Pollution Control Bureau  Arlington Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3496-1884","authenticated-orcid":false,"given":"Zhi\u2010Wu","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering Center for Applied Water Research and Innovation  Ashburn Virginia USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,1,26]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.wasman.2015.07.050"},{"key":"e_1_2_11_3_1","first-page":"1","volume-title":"Effects of metal salts on odour, pathogens, dewaterability and orthophosphate during the anaerobic digestion of municipal waste sludge","author":"Abbott T. 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