PMID- 30224289
OWN - NLM
STAT- MEDLINE
DCOM- 20190107
LR  - 20190107
IS  - 1873-2828 (Electronic)
IS  - 1350-4177 (Linking)
VI  - 51
DP  - 2019 Mar
TI  - Hydrodynamic cavitation assisted degradation of persistent endocrine-disrupting 
      organochlorine pesticide Dicofol: Optimization of operating parameters and 
      investigations on the mechanism of intensification.
PG  - 526-532
LID - S1350-4177(18)30283-9 [pii]
LID - 10.1016/j.ultsonch.2018.04.003 [doi]
AB  - Dicofol, a recommended Stockholm convention persistent organic pollutants (POPs) 
      candidate is well known for its endocrine disruptive properties and has been 
      extensively used as an organochlorine pesticide worldwide. The hydrodynamic 
      cavitation (HC) treatment of Dicofol in aqueous media induced by a liquid whistle 
      hydrodynamic cavitaion reactor (LWHCR) has been investigated while considering 
      important parameters such as inlet pressure, initial concentration of Dicofol, 
      solution temperature, pH, addition of H(2)O(2) and radical scavenger for the 
      extent of degradation. The pseudo-first-order degradation rate constant (k) was 
      determined to be 0.073 min(-1) with a cavitational yield of 1.26 x 10(-5) mg/J at 
      optimum operating conditions and a complete removal of Dicofol was achieved 
      within 1 h of treatment. Considering the removal rate and energy efficiency, the 
      optimal inlet pressure was found to be 7 bar, resulting in a cavitation number of 
      0.17. High performance liquid chromatography (HPLC) and Gas chromatography mass 
      spectroscopy (GC-MS) analyses indicated a sharp decline in the concentration of 
      Dicofol with treatment time and indicated the presence of degraded products. An 
      85% total organic carbon (TOC) removal was achieved within 1 h of treatment time, 
      demonstrating successful mineralization of Dicofol. The obtained results suggest 
      that the degradation of Dicofol followed thermal decomposition and successive 
      recombination reactions at bubble-vapor interface. Overall, the attempted 
      hydrodynamic cavitation demonstrated successful and rapid removal of endocrine 
      disruptive chemicals such as Dicofol and is expected to provide efficient 
      solution for wastewater treatment.
CI  - Copyright (c) 2018. Published by Elsevier B.V.
FAU - Panda, Debabrata
AU  - Panda D
AD  - Department of Chemical and Environmental Engineering, Faculty of Engineering, 
      University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia.
FAU - Manickam, Sivakumar
AU  - Manickam S
AD  - Department of Chemical and Environmental Engineering, Faculty of Engineering, 
      University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia. 
      Electronic address: Sivakumar.Manickam@nottighnam.edu.my.
LA  - eng
PT  - Journal Article
DEP - 20180530
PL  - Netherlands
TA  - Ultrason Sonochem
JT  - Ultrasonics sonochemistry
JID - 9433356
RN  - 0 (Endocrine Disruptors)
RN  - 0 (Free Radical Scavengers)
RN  - 0 (Pesticide Residues)
RN  - BBX060AN9V (Hydrogen Peroxide)
RN  - W4WMM0WS91 (Dicofol)
SB  - IM
MH  - Acoustics
MH  - Dicofol/*chemistry
MH  - Endocrine Disruptors/*chemistry
MH  - Free Radical Scavengers/chemistry
MH  - *Hydrodynamics
MH  - Hydrogen Peroxide/chemistry
MH  - Hydrogen-Ion Concentration
MH  - Pesticide Residues/*chemistry
MH  - Pressure
MH  - Temperature
OTO - NOTNLM
OT  - Degradation
OT  - Dicofol
OT  - Hydrodynamic cavitation
OT  - POPs
OT  - Treatment
OT  - Wastewater
EDAT- 2018/09/19 06:00
MHDA- 2019/01/08 06:00
CRDT- 2018/09/19 06:00
PHST- 2018/02/22 00:00 [received]
PHST- 2018/04/03 00:00 [revised]
PHST- 2018/04/09 00:00 [accepted]
PHST- 2018/09/19 06:00 [pubmed]
PHST- 2019/01/08 06:00 [medline]
PHST- 2018/09/19 06:00 [entrez]
AID - S1350-4177(18)30283-9 [pii]
AID - 10.1016/j.ultsonch.2018.04.003 [doi]
PST - ppublish
SO  - Ultrason Sonochem. 2019 Mar;51:526-532. doi: 10.1016/j.ultsonch.2018.04.003. Epub 
      2018 May 30.