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An Evaluation of Ferrous Iron Oxidation Kinetics in a Multiple Orifice Spray Reactor

Klein, Daniel Brian (2005) An Evaluation of Ferrous Iron Oxidation Kinetics in a Multiple Orifice Spray Reactor. Master's Thesis, University of Pittsburgh. (Unpublished)

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A bench scale experiment using a multiple orifice spray reactor was investigated as a potential remediation technology for the rapid oxidation of ferrous iron in acidic mine discharges. The multiple orifice spray reactor makes use of flow through multiple orifices to enhance aqueous aeration and oxidation rates. The reactor consists of two concentric cylinders, the inner cylinder having a series of orifices which act in a manner similar to a venturi. In this fashion neutralization and aeration are combined into a single step due to the aspiration of air as a result of a pressure gradient across the reactor which allows for the suction of an alkaline agent in to the reaction chamber. Results show ferrous iron oxidation rates at pH values between 6 and 7 can be increased by four orders of magnitude as compared to theoretical oxidation rates. At an influent ferrous iron concentration of around 150 mg/L and pH of 6, the orifice spray reactor can achieve conversions to ferric iron of about 30% within one second.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Klein, Daniel
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairNeufeld, R Dneufeld@engr.pitt.eduNEUFELD
Committee MemberCasson, Lcasson@engr.pitt.eduCASSON
Committee MemberQuimpo, Rquimpo@engr.pitt.eduRGQ1
Date: 20 June 2005
Date Type: Completion
Defense Date: 21 March 2005
Approval Date: 20 June 2005
Submission Date: 31 March 2005
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Civil and Environmental Engineering
Degree: MSCE - Master of Science in Civil Engineering
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: acid mine drainage; active treatment; AMD; cavitation; ferrous iron oxidation; multiple orifce spray reactor
Other ID:, etd-03312005-183459
Date Deposited: 10 Nov 2011 19:33
Last Modified: 15 Nov 2016 13:37


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