lnu.sePublikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Removal of Organic Pollutants from Wastewater Using Wood Fly Ash as a Low-Cost Sorbent
Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för naturvetenskap, NV.
Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för naturvetenskap, NV.ORCID-id: 0000-0002-7920-8001
Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för naturvetenskap, NV.ORCID-id: 0000-0002-1903-760X
2010 (engelsk)Inngår i: CLEAN - Soil, Air, Water, ISSN 1863-0650, E-ISSN 1863-0669, Vol. 38, nr 11, s. 1055-1061Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In this study untreated and treated wood fly ash (WA) was used as a low cost sorbent in batch sorption tests to investigate the removal of organic pollutants from a real wastewater generated by cleaning/washing of machinery in a wood laminate floor industry in Sweden The experiments focused on the effect of the WA dosage and particle size on the removal efficiency for organic compounds With a WA dosage of 160 g L-1 and a particle size less thin 1 mm the reductions of chemical oxygen demand (COD) biologic oxygen demand and total organic carbon were 37 +/- 0 4 24 +/- 0 4 and 30 +/- 0 3% respectively Pre treatment of WA with hot water improved the COD removal efficiency by absorption from 37 +/- 0 4 to 42 +/- 1 6% when the same dosage (160 g L-1) was applied Sorption isotherm and sorption kinetics for COD using untreated WA can be explained by Freundlich isotherm and pseudo-second-order kinetic models Intra particle diffusion model indicates that pore diffusion is not the rate limiting step for COD removal Based on the experimental data WA could be used as an alternative low cost sorption media/filter for removal of organic compounds from real industrial wastewater.

sted, utgiver, år, opplag, sider
2010. Vol. 38, nr 11, s. 1055-1061
HSV kategori
Forskningsprogram
Naturvetenskap, Miljövetenskap
Identifikatorer
URN: urn:nbn:se:lnu:diva-25294DOI: 10.1002/clen.201000105ISI: 000285165000009Scopus ID: 2-s2.0-78649550732OAI: oai:DiVA.org:lnu-25294DiVA, id: diva2:615618
Tilgjengelig fra: 2013-04-11 Laget: 2013-04-11 Sist oppdatert: 2017-12-06bibliografisk kontrollert
Inngår i avhandling
1. Wastewater generated by the wooden floor industry: Treatability investigation applying individual and coupled technologies
Åpne denne publikasjonen i ny fane eller vindu >>Wastewater generated by the wooden floor industry: Treatability investigation applying individual and coupled technologies
2013 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

During the last half-century a growing concern has taken place in the world regarding water shortage and public health associated to water pollution. Safe discharges of industrial effluents and water reuse within the industry have been encouraged and several initiatives have promoted the development of wastewater treatment technologies with the main focus on industrial sectors that generate large volumes of wastewater. On the other hand, searching for onsite technological options to treat small volumes of highly polluted wastewaters generated by industrial sectors that have no water in their production processes (i.e. wooden floor and furniture industry) has been neglected. To minimize and prevent environmental effects through innovative approaches, onsite treatment options for wastewater generated by cleaning/washing activities in a wooden floor industry in Sweden have been investigated. It was found that different wastewater streams generated after cleaning/washing of machinery and surfaces at different stages of the wooden floor production can pose negative effects to aquatic organisms. Since they are intermittently and manually generated, these wastewater streams have high variability both in volumes and chemical composition. During treatability studies, equalization/sedimentation process was found to be an important pre-treatment step responsible for reduction of chemical oxygen demand (COD) of about 19%. Sorption/filtration with activated carbon and anaerobic biological treatment were found to be technically feasible for both COD and formaldehyde removal. Wood fly ash (waste material with negligible cost) showed moderate sorption efficiency as compared to commercial activated carbon and leaching of secondary pollutants might prevent the use of this material unless pretreatment is carried out. In the anaerobic treatment process, the treatment efficiency of COD in an anaerobic baffled reactor  (ABR) was decreased 50% when the C/N ratio dropped below 3. A successful treatment of the cleaning wastewater with soluble COD removal of about 83% and FA removal higher than 99% was achieved by the ABR operated with hydraulic retention time (HRT) of 5 days. Mole ratio of Mg:N:P and pH were key parameters for ammonium precipitation in the wastewater. At Mg:N:P of 1:1:1 or higher and pH of 8.0, the highest ammonium removal (83%) was achieved. Combinations of treatment processes (e.g. sorption and electrocoagulation or biological treatment and chemical precipitation) improved the quality of the final effluent. However, process optimization is still required in order to improve even more the quality of the final effluent and reduce operation and maintenance costs. From the water reuse/recycle perspective, the application of advanced oxidation in combination with the above-mentioned processes seems to be a promising approach.

sted, utgiver, år, opplag, sider
Växjö: Linnaeus University Press, 2013
Serie
Linnaeus University Dissertations ; No 135/2013
Emneord
Wooden floor industry, activated carbon sorption/filtration, anaerobic biological treatment, chemical precipitation, electrocoagulation, ecotoxicity
HSV kategori
Forskningsprogram
Naturvetenskap, Miljövetenskap; Miljövetenskap, Miljöteknik
Identifikatorer
urn:nbn:se:lnu:diva-25300 (URN)978-91-97427-28-2 (ISBN)
Disputas
2013-05-23, Fullriggaren (B135), Barlastgatan 11, 392 31, Kalmar, 09:30 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2013-05-23 Laget: 2013-04-11 Sist oppdatert: 2014-03-05bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstScopus

Personposter BETA

Laohaprapanon, SawanyaMarques, MarciaHogland, William

Søk i DiVA

Av forfatter/redaktør
Laohaprapanon, SawanyaMarques, MarciaHogland, William
Av organisasjonen
I samme tidsskrift
CLEAN - Soil, Air, Water

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 143 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf