Show simple item record

dc.contributor.authorAschermann, Geert*
dc.contributor.authorJeihanipour, Azam*
dc.contributor.authorShen, Junjie*
dc.contributor.authorMkongo, Godfrey*
dc.contributor.authorDramas, Laure*
dc.contributor.authorCroue, Jean-Philippe*
dc.contributor.authorSchäfer, Andrea*
dc.date.accessioned2016-05-09T07:53:45Zen
dc.date.available2016-05-09T07:53:45Zen
dc.date.issued2016-05-07en
dc.identifier.citationSeasonal variation of organic matter concentration and characteristics in the Maji ya Chai River (Tanzania): Impact on treatability by ultrafiltration 2016 Water Researchen
dc.identifier.issn00431354en
dc.identifier.pmid27288671
dc.identifier.doi10.1016/j.watres.2016.05.022en
dc.identifier.urihttp://hdl.handle.net/10754/608646en
dc.description.abstractMany waters in Tanzania exhibit high concentrations of organic matter and dissolved contaminants such as fluoride. Due to bacteria and virus removal, ultrafiltration (UF) is an attractive option for drinking water treatment, and when coupled with adsorbents, may compete with other established processes like nanofiltration (NF) for lower contaminant concentrations. The results presented here examine the characteristics and treatability of tropical natural organic matter (NOM) by UF as a function of seasonal variation. The Tanzanian river Maji ya Chai was sampled monthly during one year. The composition of NOM in Maji ya Chai River is influenced strongly by precipitation. Total organic carbon (TOC), specific ultraviolet absorbance (SUVA) and concentration of allochthonous organics substances (such as humic substances (HS)) are elevated in periods following high precipitation, while TOC is lower and contains more biopolymers in the dry seasons. UF experiments with two regenerated cellulose membranes of different molecular weight cut-off (MWCO, 5 and 10 kDa) were conducted. UF is able to remove 50–95% of TOC with a seasonal variability of 10–20%. Due to the remaining NOM in the water that would contribute to disinfection by-product formation and bacterial regrowth, the physically disinfected water is more applicable for point of use systems than distribution or storage.en
dc.description.sponsorshipThe German Academic Exchange Service (DAAD) and Gesellschaft von Freunden der TU Berlin e.V. is acknowledged for a travel scholarship for G.A., and the Energy Technology Partnership (ETP) with the Drinking Water Quality Regulator for Scotland (DWQR) for a PhD Scholarship for J.S. Leverhulme Royal Society Africa Award SADWAT-Tanzania is thanked for project funding and Merck Millipore (Bedford, USA) for membrane provision. NM-AIST LiSE has made the UV instrument available for usage. Bryce Richards is greatly appreciated for all-round project and logistics support. Anthony Szymczyk (University Rennes, France) has provided streaming potential measurements and Meteoblue AG (Basel, Switzerland) very kindly performed precipitation data modeling for the research. TANAPA is acknowledged for allowing Godfrey Mkongo to collect samples for this research in Arusha National Park. Technicians Julius (metal works) and Suleiman (wood work) are thanked for their qualified and creative support from makeshift workshops.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0043135416303463en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Water Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Water Research, 7 May 2016. DOI: 10.1016/j.watres.2016.05.022en
dc.subjectOrganic matteren
dc.subjectSurface wateren
dc.subjectUltrafiltrationen
dc.subjectLiquid chromatography organic carbon detection (LC-OCD)en
dc.titleSeasonal variation of organic matter concentration and characteristics in the Maji ya Chai River (Tanzania): Impact on treatability by ultrafiltrationen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division*
dc.contributor.departmentEnvironmental Science and Engineering Program*
dc.contributor.departmentWater Desalination & Reuse Research Cntr*
dc.identifier.journalWater Researchen
dc.eprint.versionPost-printen
dc.contributor.institutionNelson Mandela African Institute of Science and Technology, Department of Water and Environmental Science and Engineering, P.O. Box 447, Arusha, Tanzania*
dc.contributor.institutionKarlsruhe Institute of Technology, Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany*
dc.contributor.institutionSchool of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, United Kingdom*
dc.contributor.institutionNgurdoto Defluoridation Research Station, P.O. Box 482, Usa River, Tanzania*
dc.contributor.institutionCurtin Water Quality Research Center, Department of Chemistry, Curtin University, Perth WA, Australia*
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)*
kaust.authorDramas, Laure*
kaust.authorCroue, Jean-Philippe*
refterms.dateFOA2018-05-07T00:00:00Z


Files in this item

Thumbnail
Name:
1-s2.0-S0043135416303463-main.pdf
Size:
1.229Mb
Format:
PDF
Description:
Accepted Manuscript
Thumbnail
Name:
mmc1.pdf
Size:
156.3Kb
Format:
PDF
Description:
Supplemental files
Thumbnail
Name:
1-s2.0-S0043135416303463-fx1.jpg
Size:
59.26Kb
Format:
JPEG image
Description:
Graphical abstract

This item appears in the following Collection(s)

Show simple item record