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2015 | 22 | 1 | 95-105

Article title

Influence of Ph on Adsorption Kinetics of Monochlorophenols From Aqueous Solutions on Granular Activated Carbon / Wpływ Ph Na Kinetykę Adsorpcji Monochlorofenoli Z Roztworów Wodnych Na Granulowanym Węglu Aktywnym

Content

Title variants

Languages of publication

EN

Abstracts

EN
Adsorptive removal of 2-, 3- and 4-chlorophenol from aqueous solutions by granular activated carbon was studied. The influence of different experimental parameters like initial concentration, carbon dosage and pH on the adsorption of monochlorophenols were evaluated. The influence of type of acid and base used for water acidification or alkalization was also tested. The results indicate that acidic pH is favorable for the adsorption of chlorophenols; however the type of acid or alkali used for the change of pH has a little influence and did not significantly affect the adsorption efficiency. The pH played an important role in the adsorption kinetics of chlorophenols at pH values above the pKa values of the compounds, while little influence on adsorption rate was observed if pH was decreased below the pKa values
PL
Zbadano absorpcję 2-, 3- i 4-chlorofenolu z wody na granulowanym węglu aktywnym. Sprawdzono wpływ różnych parametrów na adsorpcję, takich jak stężenie początkowe adsorbatów, ilość węgla aktywnego czy pH roztworu, jak również wpływ rodzaju kwasu i zasady użytych do zakwaszenia lub alkalizacji środowiska. Uzyskane rezultaty pokazują, że adsorpcja chlorofenoli zachodzi o wiele lepiej w kwaśnym środowisku, natomiast rodzaj zastosowanego kwasu lub zasady do zmiany pH nie wpływa znacząco na efektywność adsorpcji. pH odgrywa natomiast istotną rolę w przypadku kinetyki adsorpcji chlorofenoli na węglu aktywnym zwłaszcza w pH powyżej wartości ich pKa, natomiast w środowisku o pH poniżej wartości pKa chlorofenoli wpływ ten jest znikomy

Publisher

Year

Volume

22

Issue

1

Pages

95-105

Physical description

Dates

published
1 - 3 - 2015
online
18 - 4 - 2015

Contributors

  • Institute of Chemistry, Military University of Technology, ul. Kaliskiego 2, 00-908 Warszawa, Poland, phone +48 22 683 95 61
  • Institute of Chemistry, Military University of Technology, ul. Kaliskiego 2, 00-908 Warszawa, Poland,

References

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Document Type

Publication order reference

Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_1515_eces-2015-0006
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