Biosorption of lead (II) from industrial wastewater by using pretreated Moringa oleifera seed Residue | |
| Author | Dissanayaka, Dissanayaka M. E. |
| Call Number | AIT Thesis no.EV-18-09 |
| Subject(s) | Lead abatement Moringa oleifera Wastewater--Treatment |
| Note | submitted in partial fulfillment of the requirements for thedegree of Master of Engineering in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-18-09 |
| Abstract | Withinthelastfewdecadesenvironmentalpollutionissuesrelatedtotoxicheavymetalshaverisengradually.Theseheavymetalsaremainydischargedtotheenvironmentthroughanthropogenicsources,andthesedischargesaregettingincreasedinarapidrate.Therearemanyconventionalmethodspracticinggloballyinordertoremovetheseheeavymetalsfromwastestreams,butmostofthemareinefficientwhenconsideringlowerconcentrations.Duetothesereasonsscientistshavestartedtosearchforanenvironmentallyfriendlyefficientmethodtotreadheavymetalcontaminatedwastewater.PhysicallypretreatedMoringaoleiferaseedresiduewasinvestigatedinordertosubstituteitasan economical and enerfy efficient biosorbentin treatmentofleadpollutedeffulents,whichisatoxicheavymetaldischargedfrommanyindustrial.FouriertransformInfrared(FT-IR)analysisandBETanalysisweredoneforcharacterizationofMoringaoleiferaseedsresidue.Effectofthreedifferentphysicalpretreatmentswerestudiedandthebestwasselectedasultrasonicationforfurtherstudies.BatchbiosorptionexperimentsofPb(II)werecarriedoutwithrespecttobiomassdose,pH,initialPb(II)concentrationandcontacttime.Availability of functional groups such as amides, hydroxyls, alkanes and carboxyls were proven in FT-IRstudies.Inkineticstudies,thebiosorptionofPb(II)ontoultrasonicatedMoringaseedresiduewaswellexplainedbypseudosecondorder.EquilibriumisothermswerewellfittedintoLangmuirisothermwitharegressioncoefficientR2=0.998,andithadPb(II)bindingcapacity(qm)of56.49mg/g.TheresultssuggestthatMoringaoleiferaseedresiduewithphysicalpretreatmentcanbeusedasanpromising biosorbentfortreatmentofleadpollutedindustrialwastewater.Desorptionstudieswerenotthatsuccessfulduetostrongmetalbindingtothebiosorbentwiththeconcentrationrangesexperimentedinthisstudy. |
| Year | 2018 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-18-09 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Annachhatre, Ajit P.; |
| Examination Committee(s) | Loc Thai Nguyen;Thammarat Kootattep; |
| Scholarship Donor(s) | AIT Fellowship; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2018 |