PMID- 17141954
OWN - NLM
STAT- MEDLINE
DCOM- 20070813
LR  - 20191210
IS  - 0304-3894 (Print)
IS  - 0304-3894 (Linking)
VI  - 143
IP  - 1-2
DP  - 2007 May 8
TI  - Removal of 2,4-dichlorophenol and pentachlorophenol from waters by sorption using 
      coal fly ash from a Portuguese thermal power plant.
PG  - 535-40
AB  - Chlorophenols are one of the most important groups of priority pollutants, due to 
      their high toxicity, mutagenicity and carcinogenicity. Although activated carbon 
      has been the preferred choice for the removal of such pollutants from 
      wastewaters, the search for cheaper alternative sorbents became common in the 
      last years. Fly ash, a by-product from coal burning power plants, has a surface 
      composition that may enable the sorption of specific organic compounds. 
      Therefore, this feasibility study presents the optimization of the operating 
      parameters of a fixed-bed column containing fly ash particles, percolated by 
      aqueous solutions of 2,4-dichlorophenol (2,4-DCP) and pentachlorophenol (PCP) 
      with concentrations of 1 and 100 microg/ml. Both chlorophenols were analysed by 
      gas chromatography with electron capture detection (GC-ECD), after solid-phase 
      microextraction (SPME), with limits of detection (LODs) of 7.28 microg/l for 
      2,4-DCP and 1.76 microg/l for PCP. Removal efficiencies above 99% were obtained 
      for an initial concentration of 10 microg/ml of chlorophenols. Column saturation 
      was achieved after 7h of continuous operation for 2,4-DCP and 10h for the PCP for 
      feed levels of 10 microg/ml. Fly ash exhibited more affinity towards the sorption 
      of PCP, in comparison to 2,4-DCP.
FAU - Estevinho, Berta N
AU  - Estevinho BN
AD  - LEPAE, Departamento de Engenharia Quimica, Faculdade de Engenharia da 
      Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
FAU - Martins, Isabel
AU  - Martins I
FAU - Ratola, Nuno
AU  - Ratola N
FAU - Alves, Arminda
AU  - Alves A
FAU - Santos, Lucia
AU  - Santos L
LA  - eng
PT  - Journal Article
PT  - Validation Study
DEP - 20060929
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Chlorophenols)
RN  - 0 (Coal Ash)
RN  - 0 (Industrial Waste)
RN  - 0 (Particulate Matter)
RN  - 7440-44-0 (Carbon)
RN  - D9BSU0SE4T (Pentachlorophenol)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Adsorption
MH  - Carbon/*chemistry
MH  - Chlorophenols/*chemistry
MH  - Coal Ash
MH  - Industrial Waste
MH  - Particulate Matter/*chemistry
MH  - Pentachlorophenol/*chemistry
MH  - Portugal
MH  - Power Plants
MH  - Waste Disposal, Fluid/*methods
MH  - Water Pollution, Chemical/*prevention & control
EDAT- 2006/12/05 09:00
MHDA- 2007/08/19 09:00
CRDT- 2006/12/05 09:00
PHST- 2006/05/09 00:00 [received]
PHST- 2006/09/11 00:00 [revised]
PHST- 2006/09/25 00:00 [accepted]
PHST- 2006/12/05 09:00 [pubmed]
PHST- 2007/08/19 09:00 [medline]
PHST- 2006/12/05 09:00 [entrez]
AID - S0304-3894(06)01151-4 [pii]
AID - 10.1016/j.jhazmat.2006.09.072 [doi]
PST - ppublish
SO  - J Hazard Mater. 2007 May 8;143(1-2):535-40. doi: 10.1016/j.jhazmat.2006.09.072. 
      Epub 2006 Sep 29.