Mostra el registre d'ítem simple

dc.contributorMathew, Aji P.
dc.contributor.authorFerrer Borrell, Pere
dc.date.accessioned2015-02-24T18:28:53Z
dc.date.issued2013
dc.identifier.urihttp://hdl.handle.net/2099.1/25310
dc.description.abstractThe study explores the potential of cellulose nanocrystals (CNC) and cellulose nanofibers (CNF) to remove positive metal ions from contaminated water. Several methods are available in the market for the removal of heavy metal pollutants from aqueous solutions or industrial effluents, such as chemical precipitation, electroplating, ion exchange, and membrane processes (1). However, these methods are inefficient or expensive when heavy metals are present in the water at low concentrations, therefore new environmentally friendly technologies are still in demand. The aim of this project is to study the adsorption and desorption of heavy metal ions by nanocellulose. We carried out different experiments in order to analyse the adsorption capacity of different metal ions such Ag+, Cu2+, Fe(III) and As (V). Arsenic was studied with Chitin CNC. Experiments showed that all nanopolysaccharides had adsorption capacity for metal ions, however phosphorylated CNC had the most outstanding capacity (144.5 mg Fe/g, 119.4 mg Ag/g and 114 mg Cu/g), which means almost 100 % of the metal ions were removed. The machineries used in the experiments were ICP-­‐OES and EDS. ICP-­‐OES was used to verify de adsorption of the heavy metal ions and EDS to study the possibility of desorption in order to recover the metals.
dc.language.isoeng
dc.publisherUniversitat Politècnica de Catalunya
dc.publisherLuleå Tekniska Universitet
dc.subjectÀrees temàtiques de la UPC::Desenvolupament humà i sostenible::Enginyeria ambiental::Tractament de l'aigua
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Química del medi ambient::Química de l'aigua
dc.subject.lcshSewage -- Purification -- Heavy metals removal
dc.subject.lcshCellulose -- Microstructure
dc.subject.lcshNanoparticles
dc.titleUse of nanoscaled cellulose for water purification
dc.typeBachelor thesis
dc.subject.lemacAigües residuals -- Depuració -- Eliminació de metalls pesants
dc.subject.lemacCel·lulosa -- Microestructura
dc.subject.lemacNanopartícules
dc.rights.accessRestricted access - author's decision
dc.date.lift10000-01-01
dc.audience.educationlevelGrau
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.contributor.covenanteeLuleå tekniska universitet
dc.description.mobilityOutgoing


Fitxers d'aquest items

Imatge en miniatura

Aquest ítem apareix a les col·leccions següents

Mostra el registre d'ítem simple