This work was conducted to study the oxidation of phenol in aqueous solution using copper based catalyst with zinc as promoter and different carrier, i.e. γ-Alumina and silica. These catalysts were prepared by impregnation method.
The effect of catalyst composition, pH (5.6-9), phenol to catalyst concentration ratio (2-0.5), air feed rate (30-50) ml/s, stirring speed (400-800) rpm, and temperature (80-100) °C were examined in order to find the best conditions for phenol conversion.
The best operating conditions which lead to maximum phenol conversion (73.1%) are : 7.5 pH, 4/6 phenol to catalyst concentration, 40 ml/s air feed rate, 600 rpm stirring speed, and 100 °C reaction temperature. The reaction involved an induction period and a steady state activity regime. Both of the regimes exhibiting first order behavior with respect to the phenol concentration. The rate constants k1 and k2 for the initial rate and steady state activity regime are represented by k1=1.9×10-3 ((cm3liq/gcat) 0.5s-1 and k2= 2.4×10-10 ((cm3liq/gcat) 2 s-1) respectively.
Effect of operation conditions on Catalytic Oxidation of Phenol in Aqueous Solution
Publication Date
Wed Jan 01 2014
Journal Name
Babylon University Journal\applied Pure Sciences
Detection of the perfect condition to produce the tannase from Aspergillus niger at different medium
Publication Date
Thu Jan 01 2009
Journal Name
Ibn Al- Haitha M J. Fo R Pur E & Appl. Sc I
Synthesis and Structural Study of Some Mo(II) Carbonyl Complexes with Triazole and Oxadiazole Derivatives
A new carbonyl complexes of triazole and oxadiazole were synthesized. These complexes were identified and their structural geometric were suggested by using FT-IR and UV-Vis spectra, conductivity measurements and other chemical and physical properties. The spectra data (FT-IR, UV, Vis.) with the substantial aid of group theoretical calculations gave so many evidences for the proposed geometries and the type of bonding of these compounds
Publication Date
Mon Jun 30 2025
Journal Name
Scripta Medica
Case Report: A Rare Presentation of Sigmoid Volvulus During Pregnancy With an Integrative Postoperative Approach
Colon
sigmoid
Intestinal volvulus
Pregnancy
Surgical procedures
operative
Emergency
Acute care surgery
Pregnancy outcome
Publication Date
Mon Jan 15 2024
Journal Name
Mammalia
Brandt’s Hedgehog, <i>Paraechinus hypomelas</i> (Brandt, 1836), new to the mammal fauna of Iraq
Abstract<p>Due to the wide distribution through the Iranian Plateau, especially in its western parts adjacent to Iraq’s northeastern borders, the occurrence of Brandt’s Hedgehog <italic>Paraechinus hypomelas</italic> (Brandt, 1836) was suspected, but no confirmed records were made. In 2021–2023, several sightings were obtained during <italic>in situ</italic> surveys in the Bamo-Khoshk Mountains in the Kurdistan region-northeastern Iraq which confirm the first occurrence of this species in the country.</p>
biogeography
erinaceomorpha
insectivores
range expansion
wild mammals of Iraq
(1)
(1)
Publication Date
Fri May 01 2015
Journal Name
Transplantation Proceedings
(6)
(5)
Publication Date
Tue Dec 22 1998
Journal Name
College Of Education Ibn Rushd
Investigating Iraqi College students' production of English Intra Word and Inter Word Consonant Clusters
MR Younus, 1998
Publication Date
Sat Jan 01 2022
Journal Name
The 2nd Universitas Lampung International Conference On Science, Technology, And Environment (ulicoste) 2021
(1)
Publication Date
Mon Jan 26 2026
Journal Name
Journal Of Physical Education
Publication Date
Tue Mar 24 2009
Journal Name
The 11th Scientific Conference Of Foundation Of Technical Education
Publication Date
Mon Sep 30 2019
Journal Name
College Of Islamic Sciences
What agreed word and differed from Fundamentalist terms Between my school of speakers and jurists
In his study, the researcher highlighted the most important methods of authorship in the fundamentals of jurisprudence and speech. Fundamentalist rules and extraction and access method; they also distinct from each other that each has special divisions of the subjects of jurisprudence.