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The HBCB bioreactor consisted of two compartments: bubble column bioreactor removing DCM from liquid phase and biofilter removing DCM from gas phase. Effect of inlet DCM concentration on the elimination capacity was examined in the DCM concentration range of 34\u2013359 ppm with loading rates ranged from 2.2 to 22.8 g\/m<jats:sup>3<\/jats:sup>.h and constant total empty bed retention time (EBRT) of 200 s. In the equal loading rates, the elimination capacity and removal efficiency of the biofilter were higher than the corresponding values of the bubble column bioreactor. The maximum elimination capacity of the HBCB bioreactor was determined to be 15.7 g\/m<jats:sup>3<\/jats:sup>.h occurred in the highest loading rate of 22.8 g\/m<jats:sup>3<\/jats:sup>.h with removal efficiency of 69%. The overall mineralization portion of the HBCB bioreactor was in the range of 72-79%. The mixed liquor acidic pH especially below 5.5 inhibited microbial activity and decreased the elimination capacity. Inhibitory effect of high ionic strength was initiated in the mixed liquor electrical conductivity of 12.2 mS\/cm. This study indicated that the HBCB bioreactor could benefit from advantages of both bubble column and biofilter reactors and could remove DCM from waste gas streams in a better manner.<\/jats:p>","DOI":"10.1186\/2052-336x-12-22","type":"journal-article","created":{"date-parts":[[2014,1,9]],"date-time":"2014-01-09T12:03:08Z","timestamp":1389268988000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Removal of dichloromethane from waste gas streams using a hybrid bubble column\/biofilter bioreactor"],"prefix":"10.1186","volume":"12","author":[{"given":"Mehrnoosh","family":"Abtahi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazem","family":"Naddafi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alireza","family":"Mesdaghinia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kamyar","family":"Yaghmaeian","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ramin","family":"Nabizadeh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nematollah","family":"Jaafarzadeh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Noushin","family":"Rastkari","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shahrokh","family":"Nazmara","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reza","family":"Saeedi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2014,1,9]]},"reference":[{"key":"5051_CR1","volume-title":"Public health goal for dichloromethane (methylene chloride, DCM) in drinking water","author":"Office of Environmental Health Hazard Assessment","year":"2000","unstructured":"Office of Environmental Health Hazard Assessment: Public health goal for dichloromethane (methylene chloride, DCM) in drinking water. 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