Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Removal of micropollutants and nutrients in household wastewater using organic and inorganic sorbents
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Hållbar utveckling, miljövetenskap och teknik, Vatten- och miljöteknik.ORCID-id: 0000-0001-6617-4001
(Engelska)Ingår i: Desalination and Water Treatment, ISSN 1944-3994, E-ISSN 1944-3986Artikel i tidskrift, Editorial material (Refereegranskat) In press
Abstract [en]

The efficiency of five organic and five inorganic sorbents in removing 19 organic micropollutants (MPs), phosphorus, nitrogen, and dissolved organic carbon (DOC) was tested in a two-week column experiment using household wastewater spiked with pharmaceuticals (n = 6), biocides/pesticides (n = 4), organophosphates (n = 3), a fragrance, a UV-stablizer, a food additive,a rubber additive, a plasticizer and a surfactant. Two types of granular activated carbon (GAC), two types of lignite, a pine bark product, and five mineral-based sorbents were tested. All the organic sorbents except pine bark achieved better removal efficiencies of DOC (on average, 70 ± 27%) and MPs (93 ± 11%) than the inorganic materials (DOC: 44 ± 7% and MPs: 66 ± 38%). However, the organic sorbents (i.e. GAC and xyloid lignite) removed less phosphorus (46 ± 18%), while sorbents with a high calcium or iron content (i.e. Polonite® and lignite) generally removed phosphorus more efficiently (93 ± 3%). Ammonium-nitrogen was well removed by sorbents with a pH between 7 and 9, with an average removal of 87%, whereas lignite (pH 4) showed the lowest removal efficiency (50%). Some MPs were well removed by all sorbents (≥97%) including biocides (hexachlorobenzene, triclosan and terbutryn), organophosphates (tributylphosphate, tris-(1,3-dichloro-2-propyl)phosphate and triphenylphosphate) and one fragrance (galaxolide). The pesticide 2,6-dichlorobenzamide and the pharmaceutical diclofenac were poorly removed by the pine bark and inorganic sorbents (on average, 4%), while organic sorbents achieved high removal of these chemicals (87%).

Nyckelord [en]
Micropollutants (MPs); Synthetic substances; Sorbents; On-site sewage facilities (OSSFs)
Nationell ämneskategori
Vattenteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-234660DOI: 10.5004/dwt.2018.22836ISI: 000446574200010Scopus ID: 2-s2.0-85054474332OAI: oai:DiVA.org:kth-234660DiVA, id: diva2:1246483
Forskningsfinansiär
Forskningsrådet Formas, 216-2012-2101
Anmärkning

QC 20180907

Tillgänglig från: 2018-09-07 Skapad: 2018-09-07 Senast uppdaterad: 2018-10-23Bibliografiskt granskad
Ingår i avhandling
1. An add-on filter technique to improve micropollutant removal and water quality in on-site sewage treatment facilities
Öppna denna publikation i ny flik eller fönster >>An add-on filter technique to improve micropollutant removal and water quality in on-site sewage treatment facilities
2018 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Onsite sewage treatment facilities (OSSFs) in Sweden currently release significant amounts of nitrogen (N) and phosphorus (P) into groundwater or/and receiving water bodies. Micropollutants (MPs) have been found in both surface water and groundwater, indicating insufficient removal of MPs by OSSFs. Two laboratory-scale column experiments, followed by a field experiment, were performed to study removal of a set of organic MPs by organic and inorganic sorbents. The set covered different product categories, e.g. an artificial sweetener, organophosphates, parabens, personal care products, perfluoroalkyl substances (PFASs), pesticides, pharmaceuticals, a plasticiser, a polymer impurity, stimulants and surfactants. An experiment using five organic and five inorganic sorbents showed that coal-based organic sorbents performed better than natural fibre and inorganic sorbents in removal of MPs, with 20% higher removal efficiency on average. Five sorbents were selected for a long-term column experiment examining 31 MPs. Physical properties and chemical structure of the sorbents, namely pore structure and surface functional groups, were found to be correlated to their capacity for removal of MPs. Molecular weight, solvent-accessible area, octanol-water partition coefficient and distribution-coefficient of PFASs were found to be strongly positively correlated with their removal by some sorbents. Organic sorbents with good performance in removal of MPs and a conventional sand bed showed limited ability to remove P, while calcium-rich sorbents increased P removal greatly. Two sorbents, granulated activated carbon (GAC) and xyloid lignite (Xylit), were tested for 24 weeks in an add-on filter for effluent from a soil treatment system and found to significantly improve removal of MPs. A replaceable add-on unit for removal of MPs from OSSF effluent is recommended and should contain an organic sorbent such as GAC or Xylit.

Ort, förlag, år, upplaga, sidor
Stockholm: KTH Royal Institute of Technology, 2018. s. 54
Serie
TRITA-ABE-DLT ; 1821
Nyckelord
Micropollutant, on-site sewage facilities, physicochemical properties, pore structure, sorbents, surface functional group
Nationell ämneskategori
Vattenteknik
Forskningsämne
Mark- och vattenteknik
Identifikatorer
urn:nbn:se:kth:diva-234314 (URN)978-91-7729-936-3 (ISBN)
Disputation
2018-09-28, D3, Lindstedtsvägen 5, Stockholm, 10:00 (Engelska)
Opponent
Handledare
Forskningsfinansiär
Forskningsrådet Formas, 216-2012-2101
Anmärkning

QC 20180907

Tillgänglig från: 2018-09-07 Skapad: 2018-09-06 Senast uppdaterad: 2018-09-11Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Personposter BETA

Zhang, WenRenman, Gunno

Sök vidare i DiVA

Av författaren/redaktören
Zhang, WenRenman, Gunno
Av organisationen
Hållbar utveckling, miljövetenskap och teknikVatten- och miljöteknik
I samma tidskrift
Desalination and Water Treatment
Vattenteknik

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 361 träffar
RefereraExporteraLänk till posten
Permanent länk

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