Removal of Cadmium Ions from Simulated Wastewater Using Rice  Husk Biosorbent

Shahlaa Esmail  Ebrahim; Sarah Yaarub   Mohammed

doi:10.31026/j.eng.2012.07.09

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Publication Date

Fri Jul 21 2023

Journal Name

Journal Of Engineering

Volume

18

Issue Number

07

DOI

10.31026/j.eng.2012.07.09

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Removal of Cadmium Ions from Simulated Wastewater Using Rice Husk Biosorbent

Cadmium

Biosorption

Rice Husk

Natural Adsorbents

Isotherm Model

Shahlaa Esmail Ebrahim

Sarah Yaarub Mohammed

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Biosorption of cadmium ions from simulated wastewater using rice husk was studied with initial concentration of 25 mg/l. Equilibrium isotherm was studied using Langmuir, Freundlich, BET and Timken models. The results show that the Freundlich isotherm is the best fit model to describe this process with high determination coefficient equals to 0.983. There was a good compliance between the experimental and theoretical results. Highest removal efficiency 97% was obtained at 2.5g of adsorbent, pH 6 and contact time 100 min.

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Publication Date

Wed Jul 01 2020

Journal Name

Chemical Engineering Research And Design

Simultaneous studies of emulsion stability and extraction capacity for the removal of tetracycline from aqueous solution by liquid surfactant membrane

Ahmed A.

Mohammed A.

Maad A.

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Publication Date

Tue Jun 17 2025

Journal Name

Baghdad Science Journal

Synthesis and Biological Study of Schiff–Mannich Base Derived from 2-Mercaptobenzimidazole as Chelated Tridentate Ligand with Some Transition Metal Ions Complexes

Thuraya Q.

Shaymaa R.

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To prepare a new ligand, many compounds were used to synthesize Schiff-Mannich base, such as isatin, Para chloro Aniline, 2-mercaptobenzimidazole and indole. The resulting compound 1-((2-((1H-indol-1-ylthio)-1H-benzo[d]imidazol1-yl)methyl)-3-(4-chlorophenylimino)indolin-2-one (L). (L) was used to create a series of metal ion complexes with Co (II), Ni (II), Cu (II), Pd (II), Pt (IV), and Au (III). C.H.N.S., FTIR, mass spectra UV-ViS, 1H-NMR, 13CNMR, magnetic moment, and molar conductivity were used to characterize all of these compounds. Except for the palladium(II) and gold(III) complexes, all of the produced complexes had an octahedral geometry, according to the data. The antibacterial activity of the produced compounds was tested by usin

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(2)

Publication Date

Mon Aug 31 2020

Journal Name

Bmc Oral Health

The success of using 2% lidocaine in pain removal during extraction of mandibular premolars: a prospective clinical study

Buccal infiltration

Lidocaine

Articaine

Mandibular premolars

Inferior alveolar nerve block

Firas

Huda Moutaz

Mohammed Yahya

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Abstract<sec><title>Background

The purpose of this study was to evaluate the anesthetic effectiveness of a buccal infiltration technique combined with local massage (using 2% lidocaine) in the extraction of mandibular premolars to be utilized as an alternative to the conventional inferior alveolar nerve block.

Methods

Patients eligible included any subject with a clinical indication for tooth extraction of the mandibular 1st or 2nd premolars. All patients were anesthetized buccally by local infiltration technique followed by an external pressure applied for 1 min directly over the injection area. In each case, another local

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Publication Date

Sat Oct 01 2022

Journal Name

Environmental Advances

Stability and performance studies of emulsion liquid membrane on pesticides removal using mixture of Fe3O4Â nanoparticles and span80

The current study investigated the impact of nonionic surfactant span 80 in the existence of Fe3O4 magnetic nanoparticles on the emulsification of mixture of kerosene as petroleum based organic solvents and corn oil as a green diluent in the ratio 1:1

HCl was used as internal phase and the stability of the emulsion was carried out. The proposed Pickering emulsion liquid membrane has been exploited to investigate it is ability in the extraction of Abamectin pesticides from aqueous solution without utilizing carrier agent. Further

the effects of experimental parameters on extraction efficiency and emulsion stability such as

homogenizer speed

emulsification speed

contact time

Fe3O4-Span 80 ratios

HCL concentration

internal to membrane volume ratio (I/O) and pH of the external feed solution were carried out. The results showed that more than 99% of Abamectin could be extracted at 10 min contact time with a minimum breakage percent of 0.52% at the optimal conditions. The kinetic of the extraction were studied and the mass transfer coefficient was found to be for external phase () of 1.2

interfacial reaction rate constant () of 5.83 and the overall mass transfer coefficient () of 3.91 . The results of recyclability of the PELM revealed that the emulsion stability and extraction efficiency was nearly unchanged after three cycles.

Ahmed A.

Noor Q.

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Wed Jan 01 2020

Journal Name

Plant Archives

Cadmium adsorption in some iraqi calcareous soils according to thermodynamic equilibrium concepts

Kadhim

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(2)

Publication Date

Sat Dec 01 2018

Journal Name

Al-khwarizmi Engineering Journal

pH-Control Problems of Wastewater Treatment Plants

G. M.

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Experimental investigations have been carried out to investigate the pH-control problems of industrial electroplating wastewater treatment plants. The accurate and sensitive PID control system could treat most problem and disturbances in the normal operation of the water treatment. However, conventional treatment was replaced by proprietary treatment agent called a QUASIL which was found to be more effective for a wide range of pH.

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Publication Date

Tue Jun 30 2009

Journal Name

Iraqi Journal Of Chemical And Petroleum Engineering

Oxidation of Phenolic Wastewater by Fenton's Reagent

Ibtihage

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Phenol oxidation by Fenton's reagent (H2O2 + Fe+2) in aqueous solution has been studied for the purpose of learning
more about the reactions involved and the extent of the oxidation process, under various operating conditions. An initial
phenol concentration of 100 mg/L was used as representative of a phenolic industrial wastewater. Working temperature
of 25C was tested, and initial pH was set at 5.6 . The H2O2 and the Fe+2 doses were varied in the range of
(H2O2/Fe+2/phenol = 3/0.25/1 to 5/0.5/1). Keeping the stirring speed of 200 rpm.
The results exhibit that the highest phenol conversion (100%) was obtained under (H2O/Fe+2/phenol ratio of 5/0.5/1)
at about 180 min. The study has indicated that Fenton's oxidation i

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Publication Date

Mon Sep 04 2017

Journal Name

Journal Of Chemical And Pharmaceutical Research

Lead, Cadmium and Nickel contamination of roadside soils and plant leaves in Baghdad City

Hind S.

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Publication Date

Tue Dec 11 2018

Journal Name

Iraqi Journal Of Physics

Spectroscopic and structural studies of cadmium oxide thin films prepared by D.C magnetron sputtering

CdO

DC sputtering

optical emission spectroscopy

structural properties.

Ghuson H.

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Cadmium oxide thin films were prepared by D.C magnetron plasma sputtering using different voltages (700, 800, 900, 1000, 1100 and 1200) Volt. The Cadmium oxide structural properties using XRD analysis for just a voltage of 1200 volt at room temperature after annealing in different temperatures (523 and 623) K were studied .The results show that the films prepared at room temperature have some peaks belong to cadmium element along the directions (002), (100), (102) and (103) while the other peaks along the directions of (111), (200) and (222) belong to cadmium oxide. Annealed samples display only cadmium oxide peaks. Also, the spectroscopic properties of plasma diagnostic for CdO thin films were determined and the results show that the el

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Publication Date

Wed Jan 01 2020

Journal Name

Plant Archives

The effect of temperature on cadmium adsorption and desorption in some iraqi calcareous soils

Kadhim

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