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Article
Removal Lead and Cadmium Ions in Industrial Wastewater Using Graphene Nano Sheets

Authors: Faris Haamoodi AL Ani --- Alaa Hussein AL Fatlawi --- Gassaq Ahmed Taher
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2016 Volume: 34 Issue: 9 Part (A) Engineering Pages: 1903-1914
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Industrial wastewater effluents especially that contain heavy metals considered a foremost problem of water pollution in the worldwide environment. Discharging this wastewater,that contains considerable heavy metals' concentrations into ground, water or streams and rivers causes deterioration of the ecological system.The present study aimed to synthesized the graphene nano sheets by electrochemical methodand used for removal of lead Pb+2 and Cadmium Cd+2 ions that found in industrial wastewater. Graphene nano sheets synthetic in this study is characterized by X-ray diffraction XRD, scanning electron microscopy SEM,Raman spectroscopy and Fourier-Transformed Infrared Spectra (FT-IR).The abundant oxygen-containing functional groups on the surfaces of graphene nanosheets and strong surface complexion played an important role in (lead and cadmium ions) adsorption. Adsorption properties for (lead and cadmium ions) on graphene nanosheets were regularly investigated, including contact time, pH effect, adsorbent doses and initial concentrations for lead and cadmium solutions. The experimental data were evaluated by Langmuir, Freundlich models in order to describe the equilibrium isotherms. From the adsorption isotherms, the maximum adsorption capacities of lead ions on graphene calculated from Langmuir model were equivalent 476.19 (mg/g) at pH 6.2 and equilibrium contact time 35 min with adsorbent dose (40mg/L), and 188.679 (mg/g) at pH 5.2 and equilibrium contact time 40 min with adsorbent dose (20mg/L) for cadmium ions. The results of the present study demonstrated that graphene has respectable qualifications to removal (Pb+2&Cd+2 ions) which found in industrial wastewater as compared to other adsorbents e.g. activated carbon.


Article
Biological activitity of nano hybrid from Rifampicin intercalated with Ni/Al and Mg/Al Layered double hydroxides
النشاط البيولوجي لمركب نانوي من الرافمبسين المجسر لمركبات ثنائية الهيدروجين من نيكلالمنيوم و مغنسيومالمنيوم

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Abstract

This work included synthesis of Rafampicin intercalated with both Mg/Al and Ni/Al Layered double hydroxide to give a nano hybrid materials, these materials were characterized by X-Ray diffractions (XRD) and Fourier transformation Infra red(FTIR), controlled release and Biological activity tests of the resulted nano materials was evaluated against both gram positive and gram negative bacteria.

هذا العمل يتضمن تخليق الرافبمسين المجسر لطبقات ثنائية الهيدروكسيل متكونة من مغنسيومالمنيوم و نيكل المنيوم ليكون مواد ذات تهجين نانوي تم تشخيصها بواسطة حيود الاشعة السينية وطيف الاشعة تحت الحمراء, درست السيطرة على تحرر الدواء من كلا الطبقتين وحدد الموديل الرياضي الذي ينطبق على سير التحرر كذلك اجريت الفحوص البيولوجية التي تخص النشاط البيولوجي على نوعين من البكتريا الموجبة والسالبة وعينت نسبة النشاط البايولوجي

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