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dc.contributorKumpiene, Jurate
dc.contributor.authorCalvo López, Carlos
dc.description.abstractNowadays, the main method applied to remediate As contaminated soil is excavation and landfilling. Soil treatments normally are implemented under aerobic conditions. This study was conducted to investigate the possibility of stabilizing As in reducing conditions by adsorption to and co-precipitation with Fe-sulphides or formation of amorphous As-S phases. The sulphide formation is considered to result from the activity of sulphate reducing bacteria (SRB) present in sludge as a part of their metabolism. The bacteria produce sulphide by reducing sulphate and oxidizing organic compounds. A total of 36 bottles were prepared, 18 of them are considered as sample bottles and did not contain sludge or Na-lactate (organic source) together with soil. The bottles amended with sludge contained 4.5 g/l of sulphate and 3.5 g/l of Na-lactate. The results showed that the concentration of dissolved As was dramatically higher in the bottles amended with sludge, probably due to insufficient SRB activity or the necessity of having a longer-term experiment.
dc.publisherUniversitat Politècnica de Catalunya
dc.publisherLuleå Tekniska Universitet
dc.subjectÀrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament dels sòls
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química del medi ambient
dc.subject.lcshSoil pollution
dc.subject.lcshSewage -- Purification -- Anaerobic treatment
dc.titleImmobilisation of Arsenic in Anaerobic Environment
dc.typeMaster thesis (pre-Bologna period)
dc.subject.lemacSòls -- Contaminació
dc.subject.lemacAigües residuals -- Depuració -- Tractament anaeròbic
dc.rights.accessRestricted access - author's decision
dc.audience.educationlevelEstudis de primer/segon cicle
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona
dc.provenanceAquest document conté originàriament altre material i/o programari no inclòs en aquest lloc web
dc.audience.degreeENGINYERIA INDUSTRIAL (Pla 1994)

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