?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F19431%2F&rft.title=Application+of+Flowback+Water+and+GOPS+on+the+Prevention+of+Acid+Mine+Drainage+in+the+Mather+Mine&rft.creator=Deng%2C+Huiqi&rft.description=Acid+mine+drainage+(AMD)+is+an+environmental+pollutant+that+degrades+water+bodies+and+harms+aquatic+life.+In+the+Appalachian+Mountains+of+the+eastern+U.S.%2C+over+7%2C500+miles+of+streams+are+impacted+by+AMD.+Current+methods+of+active+treating+AMD+such+as+neutralization+with+limestone+are+labor-intensive+and+costly.+Passive+treatments+with+lower+maintenance+and+management+costs+are+the+more+sustainable+alternatives+for+AMD+management.+The+research+reported+herein+explores+the+possibility+of+applying+flowback+water+from+natural+gas+drilling+operations+and+the+chelating+agent+3-glycidoxypropyltrimethoxysilane+(GOPS)+as+additive+to+passively+treat+AMD.+The+hypothesis+is+that+chemicals+present+in+the+flowback+water+will+form+insoluble+salts+with+those+in+the+mine+residue+and+precipitate+on+the+mine+rock+to+passivate+the+surface..+Additionally%2C+GOPS+will+improve+upon+the+passivation+process+by+complexing+with+metal+ions+in+the+precipitate+to+form+a+multilayer+hydrophobic+coating.%0D%0AIn+order+to+develop+a+protocol+for+measuring+the+optimal+dosage+of+flowback+water+and+GOPS+for+AMD+prevention%2C+several+preliminary+batch+tests+were+conducted.+These+tests+evaluated+the+reaction+time+and+volumes+of+flowback+water+and+GOPS+appropriate+for+further+column+testing%2C+as+measured+by+concentrations+of+Fe%2C+Ba%2C+and+SO42-.+From+batch+studies%2C+it+is+observed+that+when+55+mL+of+flowback+water+was+added+to+500+mg+of+mine+residue%2C+the+contaminants+of+major+concern%2C+Fe+and+SO42-+reached+their+lowest+levels.+Meanwhile%2C+a+dosage+of+0.0001+M+GOPS+is+optimum+to+improve+the+microencapsulation.+Results+from+the+test+column+were+compared+to+an+identical+control+column%2C+which+was+treated+with+deionized+water.+The+results+suggest+that%2C+for+the+experiment+duration+of+one+month%2C+flowback+water+and+GOPS+have+done+an+effective+job+in+curbing+the+release+of+Fe+and+SO42-+from+mine+residue.+After+15+days+of+treatment%2C+the+concentration+of+Fe+was+0.6+ppm%2C+reduced+by+96%25+relative+to+the+control%2C+and+the+concentration+of+SO42-+was+90+ppm%2C+reduced+by+83%25.+However%2C+trace+metals+including+Mn+were+not+reduced+to+within+the+requirements+set+by+the+Environment+Protection+Agency.+As+a+result%2C+more+studies+are+needed+to+improve+the+performance+of+this+technique.+%0D%0A&rft.date=2013-09-24&rft.type=University+of+Pittsburgh+ETD&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fd-scholarship-dev.library.pitt.edu%2F19431%2F1%2Fdenghuiqi_etd2013.pdf&rft.identifier=++Deng%2C+Huiqi++(2013)+Application+of+Flowback+Water+and+GOPS+on+the+Prevention+of+Acid+Mine+Drainage+in+the+Mather+Mine.++Master's+Thesis%2C+University+of+Pittsburgh.++++(Unpublished)++