PMID- 10936536
OWN - NLM
STAT- MEDLINE
DCOM- 20000913
LR  - 20191104
IS  - 0304-3894 (Print)
IS  - 0304-3894 (Linking)
VI  - 76
IP  - 2-3
DP  - 2000 Sep 15
TI  - Removal of chlorophenols from aqueous solution by fly ash.
PG  - 237-49
AB  - Fly ash from coal-fired thermal power plants can be used for the removal of 
      2-chlorophenol (2-CP) and 2,4-dichlorophenol (2,4-DCP) with enthalpy changes of 
      about -3 kcal/mol. The amounts of 2-CP and 2,4-DCP removed are affected by the pH 
      value of the solution. The efficiency of removal improves when the pH value is 
      less than the pK(a) values of 2-CP and 2,4-DCP, respectively. The adsorbed amount 
      of chlorophenol by fly ash is also affected by particle diameter, carbon content, 
      and the specific surface area of the ash used in this study. As expected, more 
      adsorption takes place with fly ash of higher carbon content and larger specific 
      surface area. Moreover, the adsorbed amount of chlorophenol is not influenced by 
      the matrix in the wastewater, as shown by studying the removal of 2-CP and 2, 
      4-DCP in wastewater from a synthetic fiber plant. Chlorophenols in the wastewater 
      were also removed efficiently through a fly ash column, with breakthrough times 
      being inversely proportional to flow rates.
FAU - Kao, P C
AU  - Kao PC
AD  - Department of Environmental Engineering, National Chung-Hsing University, 
      Taichung 402, Taichung, Taiwan.
FAU - Tzeng, J H
AU  - Tzeng JH
FAU - Huang, T L
AU  - Huang TL
LA  - eng
PT  - Journal Article
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Chlorophenols)
RN  - 0 (Coal)
RN  - 0 (Coal Ash)
RN  - 0 (Industrial Waste)
RN  - 0 (Particulate Matter)
RN  - 059QF0KO0R (Water)
RN  - 7440-44-0 (Carbon)
RN  - K9KAV4K6BN (2-chlorophenol)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Adsorption
MH  - Carbon/analysis/*chemistry
MH  - Chlorophenols/*chemistry
MH  - *Coal
MH  - Coal Ash
MH  - Filtration
MH  - Humans
MH  - Hydrogen-Ion Concentration
MH  - *Industrial Waste
MH  - Particle Size
MH  - Particulate Matter
MH  - Rheology
MH  - Surface Properties
MH  - Textile Industry
MH  - Water/chemistry
EDAT- 2000/08/11 11:00
MHDA- 2000/09/19 11:01
CRDT- 2000/08/11 11:00
PHST- 2000/08/11 11:00 [pubmed]
PHST- 2000/09/19 11:01 [medline]
PHST- 2000/08/11 11:00 [entrez]
AID - S0304389400002016 [pii]
AID - 10.1016/s0304-3894(00)00201-6 [doi]
PST - ppublish
SO  - J Hazard Mater. 2000 Sep 15;76(2-3):237-49. doi: 10.1016/s0304-3894(00)00201-6.