title: An oxygen slow-releasing material and its application in water remediation as oxygen supplier.
abstract: In this study, an oxygen slow-releasing material (OSRM) consisting of calcium peroxide (CaO2), stearic acid (SA) and quartz sand was used to improve oxygen supply during bioremediation. The oxygen-releasing rates of CaO2powder and OSRM with different SA contents were investigated. The efficacy of OSRM as an oxygen supplier was assessed by water remediation experiments using activated sludge. Results showed that CaO2powder was effectively embedded by SA under anhydrous conditions. The oxygen-releasing rate decreased with increasing SA contents. Moreover, the OSRM exhibited higher oxygen-releasing capacity, and more effective pH control ability than CaO2powder. The water remediation experiments showed better removal of COD and [Formula: see text] with OSRM as the oxygen supplier. These results provided detailed information when CaO2was applied as the oxygen supplier in water remediation, which can serve as references for field application of bioremediation.
authors.affiliation: a Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education , East China University of Science and Technology , Shanghai , People's Republic of China.
authors.forename: Yanbo
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: a Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education , East China University of Science and Technology , Shanghai , People's Republic of China.
authors.forename: Xingbin
authors.initials: X
authors.lastname: Fang
authors.affiliation: a Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education , East China University of Science and Technology , Shanghai , People's Republic of China.
authors.forename: Zhiqing
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: a Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education , East China University of Science and Technology , Shanghai , People's Republic of China.
authors.forename: Yonghua
authors.initials: Y
authors.lastname: Hu
authors.affiliation: a Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education , East China University of Science and Technology , Shanghai , People's Republic of China.
authors.forename: Jun
authors.initials: J
authors.lastname: Lu
mesh_terms: D001673:Biodegradation, Environmental; D052918:Environmental Restoration and Remediation / Q000379:methods*; D057927:Hydrophobic and Hydrophilic Interactions; D010100:Oxygen / Q000737:chemistry*; D010545:Peroxides / Q000737:chemistry*; D011208:Powders; D011791:Quartz / Q000737:chemistry*; D013229:Stearic Acids / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D010545:Peroxides; D011208:Powders; D013229:Stearic Acids; D011791:Quartz; C031183:stearic acid; C403632:calcium peroxide; D010100:Oxygen
keywords: Bioremediation; calcium peroxide; dissolved oxygen; oxygen-releasing material; water remediation