Rise Velocity and Drag Coefficient of Collapsing Two-Phase Bubble Condensing in an Immiscible Liquid

Basma A. Abdul-Majeed

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Publication Date

Sat Jun 30 2007

Journal Name

Iraqi Journal Of Chemical And Petroleum Engineering

Volume

8

Issue Number

2

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Rise Velocity and Drag Coefficient of Collapsing Two-Phase Bubble Condensing in an Immiscible Liquid

rise velocity

drag coefficient

two phase bubble

collapse of two phase bubble

Basma A. Abdul-Majeed

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Collapse of the vapor bubble condensing in an immiscible is investigated for n-pentane and n-hexane vapors condensing in cold water and n-pentane in two different compositions of glycerin- water mixture. The rise velocity and the drag coefficient of the two-phase bubble are measured.

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Publication Date

Sun Jun 30 2019

Journal Name

Iraqi Journal Of Chemical And Petroleum Engineering

Micro-Bubble Flotation for Removing Cadmium Ions from Aqueous Solution: Artificial Neural Network Modeling and Kinetic of Flotation

cadmium ions

flotation

microbubbles

ANN model

kinetic flotation rate.

Abeer

Nada

Baseem

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In this work, microbubble dispersed air flotation technique was applied for cadmium ions removal from wastewater aqueous solution. Experiments parameters such as pH (3, 4, 5, and 6), initial Cd(II) ions concentration (40, 80, and 120 mg/l) contact time( 2, 5, 10 , 15, and 20min), and surfactant (10, 20and 40mg/l) were studied in order to optimize the best conditions .The experimental results indicate that microbubbles were quite effective in removing cadmium ions and the anionic surfactant SDS was found to be more efficient than cationic CTAB in flotation process. 92.3% maximum removal efficiency achieved through 15min at pH 5, SDS surfactant concentration 20mg/l, flow rate250 cm³/min and at 40mg/l Cd(II) ions initial co

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(3)

Publication Date

Thu May 31 2012

Journal Name

Al-khwarizmi Engineering Journal

Extraction of Penicillin V from Simulated Fermentation Broth by Liquid-Liquid Membrane Technique

Liquid-liquid membrane

Penicillin V

pertraction

extraction

Khalid W.

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Liquid-liquid membrane extraction technique, pertraction, using three types of solvents (methyl isobutyl ketone, n-butyl acetate, and n-amyl acetate) was used for recovery of penicillin V from simulated fermentation broth under various operating conditions of pH value (4-6) for feed and (6-8) for receiver phase, time (0-40 min), and agitation speed (300-500 rpm) in a batch laboratory unit system. The optimum conditions for extraction were at pH of 4 for feed, and 8 for receiver phase, rotation speed of 500 rpm, time of 40 min, and solvent of MIBK as membrane, where more than 98% of penicillin was extracted.

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Publication Date

Fri Apr 02 2021

Journal Name

Journal Of Contemporary Issues In Business And Government

The effect of developing insurance marketing methods on performance of insurance companies (An applied research in the two Iraqi general and national insurance companies)

SUHA ABDULHASAN SHAIKHAH

MARYAM MUZSHIM

ASSISTANT PROF. DR. KHLOODHADI ABOOD

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Publication Date

Thu Jun 15 2017

Journal Name

Journal Of Baghdad College Of Dentistry

Effects of Two Different Colorant Solutions on the Color Stability of Bleached Enamel in Association with CPP-ACPF: An In Vitro Study

Manal H

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Background: One of the drawbacks of vital teeth bleaching is color stability. The aim of the present study was to evaluate the effects of tea and tomato sauce on the color stability of bleached enamel in association with the application of MI Paste Plus (CPP-ACPF). Materials and Methods: Sixty enamel samples were bleached with 10% carbamide peroxide for two weeks then divided into three groups (A, B and C) of 20 samples each. After bleaching, the samples of each group were subdivided into two subgroups (n=10). While subgroups A1, B1 and C1 were kept in distilled water, A2, B2, and C2 were treated with MI Paste Plus. Then, the samples were immersed in different solutions as follow: A1 and A2 in distilled water (control); B1 and B2 in black

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Publication Date

Wed Oct 01 2025

Journal Name

Biomass And Bioenergy

Investigation of reaction parameters for esterification of acidic crude palm oil using bubble column reactor

Khalid M.

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(3)

Publication Date

Tue Mar 20 2018

Journal Name

Offshore Technology Conference Asia

Prediction of Hydrate Phase Equilibrium Conditions for Different Gas Mixtures

new correlation

hydrate equilibrium temperature

correlation

prediction

gas mixture

hammerschmidt

phase equilibria

artificial intelligence

upstream oil & gas

hydrate

Dhifaf Jaafar

Stefan

Maxim

Ahmed

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Abstract<p>Gas hydrate formation poses a significant threat to the production, processing, and transportation of natural gas. Accurate predictions of gas hydrate equilibrium conditions are essential for designing the gas production systems at safe operating conditions and mitigating the problems caused by hydrates formation. A new hydrate correlation for predicting gas hydrate equilibrium conditions was obtained for different gas mixtures containing methane, nitrogen and carbon dioxide. The new correlation is proposed for a pressure range of 1.7-330 MPa, a temperature range of 273-320 K, and for gas mixtures with specific gravity range of 0.553 to 1. The nonlinear regression technique was applie</p> ... Show More

(7)

Publication Date

Thu Jan 01 2015

Journal Name

Journal Of Chemical,biological And Physical Sciences

Study the Electron Drift Velocity in Carbon Dioxide Gas Obtained From Boltzmann Equation Analysis‏

wasan

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Publication Date

Fri Jan 24 2025

Journal Name

Journal Of The American Oil Chemists' Society

Development of natural deep eutectic solvent‐assisted liquid–liquid extraction method for soap removal from biodiesel: Optimization and kinetics

Khalid M.

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Abstract<p>The soap content in biodiesel is an important challenge during the production and purification processing of biodiesel. Natural deep eutectic solvents (NADES) have recently attracted considerable interest as an environmentally suitable substitute for traditional solvents in the biodiesel industry. This work investigates the soap removal from the contaminated biodiesel using NADES. Eight choline chloride‐based deep eutectic solvents (DESs) were screened using the conductor‐like screening model for real solvents (COSMO‐RS) to identify the most suitable solvent for soap removal and were validated experimentally. The effect of NADES molar ratio, NADES:biodiesel ratio, mixing speed and extraction ti</p> ... Show More

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(2)

Publication Date

Sun Jun 12 2011

Journal Name

Baghdad Science Journal

Dependence of gamma-ray absorption coefficient on the size of lead particle

gamma-ray

absorption coefficient

lead particle

Hayder S.

Abdel hussain A

Harith I.

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In this study, dependence of gamma-ray absorption coefficient on the size of Pb particle size ranging from 200µm up to 2.5mm, using different weights of each particle size. The results show that gamma-ray attenuation coefficient is inversely proportional with the size of Pb particle size due to the reduction of the spaces between the lead particles.

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Publication Date

Wed Mar 10 2021

Journal Name

Baghdad Science Journal

An Approximate solution for two points oundary value problem corresponding to some optimal control

Radhi A.

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this paper presents a novel method for solving nonlinear optimal conrol problems of regular type via its equivalent two points boundary value problems using the non-classical

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