Show simple item record

dc.contributor.advisorBatchelor, Bill
dc.creatorVellanki, Bhanu Prakash
dc.date.accessioned2012-10-19T15:30:51Z
dc.date.accessioned2012-10-22T18:03:10Z
dc.date.available2014-11-03T19:49:14Z
dc.date.created2012-08
dc.date.issued2012-10-19
dc.date.submittedAugust 2012
dc.identifier.urihttps://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11764
dc.description.abstractA new class of treatment processes called Advanced Reduction Processes (ARP) has been proposed. The ARPs combine activation methods and reducing agents to form highly reactive reducing radicals that degrade oxidized contaminants. Batch screening experiments were conducted to identify effective ARP by applying several combinations of activation methods (ultraviolet light, ultrasound, electron beam, microwaves) and reducing agents (dithionite, sulfite, ferrous iron, sulfide) to degradation of five target contaminants (perchlorate, nitrate, perfluorooctanoic acid, 2,4 dichlorophenol, 1,2 dichloroethane) at 3 pH levels (2.4, 7.0, 11.2). These experiments identified the combination of sulfite activated by ultraviolet light produced by a low pressure mercury vapor lamp as an effective ARP. More detailed kinetic experiments were conducted with nitrate and perchlorate as target compounds and nitrate was found to degrade more rapidly than perchlorate. The effects of pH, sulfite concentration, and light intensity on perchlorate and nitrate degradation were investigated. The effectiveness of the sulfite/UV-L treatment process improved with increasing pH for both perchlorate and nitrate.en
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.subjectAdvanced Reduction Processesen
dc.subjectAdvanced Oxidation Processesen
dc.subjectradicalen
dc.subjectreductionen
dc.subjectoxidationen
dc.subjectultraviolet lighten
dc.subjectelectron beamen
dc.subjectsulfiteen
dc.subjectdithioniteen
dc.subjectferrous ironen
dc.subjectperchlorateen
dc.subjectnitrateen
dc.subjectperfluorooctanoic acid (PFOA)en
dc.subject2,4 dichlorophenol(2,4 DCP)en
dc.subject1,2 dichloroethane (1,2 DCA)en
dc.titleAdvanced Reduction Processes - A New Class of Treatment Processesen
dc.typeThesisen
thesis.degree.departmentCivil Engineeringen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorTexas A&M Universityen
thesis.degree.nameDoctor of Philosophyen
thesis.degree.levelDoctoralen
dc.contributor.committeeMemberAbdel-Wahab, Ahmed
dc.contributor.committeeMemberBoulanger, Bryan
dc.contributor.committeeMemberYing, Qi
dc.type.genrethesisen
dc.type.materialtexten
local.embargo.terms2014-10-22


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record