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Related Experiment Video

Updated: Dec 26, 2025

Elucidating the Metabolism of 2,4-Dibromophenol in Plants
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Non-equilibrium 2, 4-DCP uptake onto pine chips from aqueous solutions.

S M G Hossain1, R G McLaughlan1

  • 1Faculty of Engineering and Information Technology, University of Technology Sydney (UTS), Sydney, Australia.

Environmental Technology
|March 18, 2020
PubMed
Summary

Pine chips effectively remove 2,4-dichlorophenol (2,4-DCP) from water, with uptake capacity increasing at slower flow rates. Non-equilibrium processes significantly impact contaminant removal efficiency in treatment systems.

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Area of Science:

  • Environmental Science
  • Chemical Engineering
  • Water Treatment

Background:

  • Industrial use of 2,4-dichlorophenol (2,4-DCP) leads to soil and groundwater contamination.
  • Cost-effective methods for 2,4-DCP removal from water are crucial.

Purpose of the Study:

  • To evaluate the uptake of 2,4-DCP onto pine chips in column studies.
  • To investigate the influence of particle size and flow rate on 2,4-DCP removal.
  • To assess the applicability of equilibrium and non-equilibrium models for describing 2,4-DCP sorption.

Main Methods:

  • Column studies using pine chips with varying particle sizes (1.18 and 4.75 mm).
  • Testing different flow rates (5 and 10 mL/min).
  • Analysis of breakthrough curves (BTCs) and fitting with equilibrium and non-equilibrium sorption models.
Keywords:
24-DCPHydrus 1Dbreakthrough curvesmass transfernon- equilibriumwood

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Main Results:

  • Uptake capacity increased from 3.0-6.0 mg/g as flow rate decreased from 10 to 5 mL/min.
  • Particle size did not significantly affect uptake capacity at the same flow rate.
  • Non-equilibrium models, particularly the two-site non-equilibrium model, provided a better fit for BTCs than equilibrium models.
  • Higher flow rates resulted in a decreased fraction of instantaneous sorption, indicating greater non-equilibrium.

Conclusions:

  • Non-equilibrium processes are critical for understanding and designing effective 2,4-DCP removal systems using pine chips.
  • Slower flow rates enhance 2,4-DCP uptake capacity.
  • Accurate modeling of contaminant removal requires consideration of non-equilibrium sorption dynamics.