EJER, Vol. 6, January 2017

EJER, Vol. 6, January 2017 (6)

Removing Heavy Metals from Industrial Wastewater Using Cement Kiln Dust and Electric Arc Furnace Dust as Industrial By-Products
S. A. Abo-El-Enein1*, M. S. Attia1, M. M. Ali2, G. G. Mohamed3, M. S. S. Soliman2
1Chemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
2 Chemistry Department, Central Laboratory for Environmental Quality Monitoring, National Water Research Center, Cairo, Egypt
3 Chemistry Department, Faculty of Science, Cairo University, Cairo, Egypt
Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it. (S. A. Abo-El-Enein)
Tel: +202 01005363830
Abstract
The River Nile and its branches are the main source of fresh water in Egypt. They are subjected to all pollution sources, among and most important of it is the industrial one. This study aims to investigate removal efficiency of industrial wastewater discharged to Ismailia Canal using cement kiln Dust (CKD) and electric arc furnace dust (EAFD) as industrial adsorbents. Some heavy metals such as; iron, manganese, aluminum, nickel, and zinc have been studied. The adsorption process is examined in terms of its equilibria and kinetics. Batch adsorption experiments are performed to evaluate the removal of these metals onto CKD and EAFD by-product wastes under various operational conditions such as; adsorbate ions concentration, contact time, pH, adsorbent dose, and temperature. The results revealed that CKD has a very high affinity to adsorb iron, manganese, nickel, and zinc ions. While, EAFD can efficiently adsorb only manganese, aluminum and nickel. The adsorption isotherms and kinetic studies indicated that the adsorptive behavior of heavy metals ions on CKD and EAFD satisfy the Langmuir assumptions, i.e. monolayer formation on the surface of the adsorbent, and obeys the pseudo-second-order equation reaction.

Impact of some soil amendments on controlling heavy metals toxicity in some contaminated soils.
Abo-El-Enein*, S. A.; S. A. Radwan**; I. A. Ashour*** and Eman. A. Mohammed**
*Physical chemistry department, Faculty of science, Ain Shams Univ., Cairo, Egypt.
** Soil chemistry and Physics department, Desert Research Center, Cairo, Egypt.
***Soil Conservation department, Desert Research Center, Cairo, Egypt.
ABSTRACT
A pot experiment was conducted under laboratory conditions at Desert Research Center, Cairo, Egypt. The aim of this experiment is to study the role of three soil amendments; i.e. rock phosphate, nano-hydroxy apatite and poultry litter manure on reducing the hazard effects of some heavy metals in contaminated soils and wheat plants grown in it. The investigated soils were alluvial silt clay and alluvial clay soils from El Salam canal and Bahr El-Baker drain areas, respectively as well as calcareous sandy clay loam from Ras Sudr. Sequential extraction was used to fractionate heavy metals, i.e., Cd, Pb and Zn to evaluate their mobility and bioavailability in such soils.
Results indicated that cadmium was predominantly associated with the crystalline Fe oxides fraction, while lead and zinc were predominantly associated with the residual fraction. By applying the modified degree of contamination index, it can be noticed that El Salam soil suffering from a high degree of contamination and Bahar El Bakar soil suffering from a very high degree of contamination, while Ras Sudr soil sample has a moderate degree of contamination.
Results also indicated that the application of rock phosphate, nano-hydroxy apatite and poultry manure reduced Cd, Pb and Zn mobility in all the investigated soils through metals transformation from non-residual to residual forms.
Mobility factor of heavy metals reduced due to the applied soil amendments and the efficiency of amendments on reducing such factor was in the following order: nano- hydroxy apatite < rock phosphate < poultry manure.
Egyptian Journal of Environmental Research EJER, Vol. 6, January 2017
79
The present data showed that the addition of all the applied materials reduced the concentration of Cd, Pb and Zn in wheat roots and shoots.
It can be concluded that the toxicity of heavy metals does not depend only on its concentration in soil, but also depends on different forms in which metals are present. The applied soil amendments, especially nano hydroxy apatite have high effects on decreasing chemically available heavy metals in soil as well as decreasing their concentrations in wheat plant. Most of these materials are available in large amounts, So the application of such materials can be used as effective strategy to remediate soils polluted with heavy metals.

Monday, 10 April 2017 13:15

Ferrite-based Materials for Removal Heavy Metals

Written by

Ferrite-based Materials for Removal Heavy Metals
Ahmad Anwar Hassan1, Samir. A. Abdel-Latif2, Mohammed Eid M. Ali3*
1Central Laboratories of the Egyptian Mineral Resources Authority, Dokki, Cairo, Egypt
2Chemistry Department, Faculty of Science, Helwan University, Cairo, Egypt
3Water Pollution Research Department, National Research Center, El-Bouthous, Dokki, Cairo, Egypt, P.O. 12622
*Corresponding author: Mohammed Eid M. Ali, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it., mailing address: 3Water Pollution Research Department, National Research Center, El-Bouthous, Dokki, Cairo, Egypt, P.O. 12622/ Tel: 00201008457583
Abstract
Spinel nickel ferrite was synthesized by low temperature regime in which no calcination temperature is induced. The as-prepared nickel ferrite is used for treatment hexavalent chromium Cr (VI) and pentavalent arsenic As (V) ions from wastewater by adsorption technique. Cr (VI) ions were removed by maximum efficiency reached to 60% after 90 minutes at pH 5, 2 g/L of ferrite dose and concentration of Cr (VI) ions is 25 mg/L. As (V) ions were treated by maximum efficiency reached to 75% after 90 minutes at pH 5, dose of ferrite of 1 g/L and concentration of As (V) ions is 25 mg/L. kinetic and isothermal study of adsorption of Cr (VI) and As (V) ions onto nickel ferrite surface indicates that sorption is favorable, spontaneous and chemical process. Cr (VI) ions adsorption follows Pseudo first order kinetics reaction while As (V) ions adsorption follows Pseudo second order kinetics reaction. Conclusively, nickel ferrite has more uptakes for As (V) rather than Cr (VI).

Environmental and Social factors influencing in nicotine dependence detected through using Fagerström Test for Nicotine Dependence
Amal Saad-Hussein, Asmaa Mahmoud Mohammed, Salwa F Hafez, Eman El-Tahlawy, Weam Shaheen, Mona A. Helmy, Mohamed El-Hamshary
Environmental & Occupational Medicine Department and Smoking Cessation Clinic,
National Research Centre, Egypt
Abstract
This study examined the possible environmental and social factors that may be involved in the nicotine dependence. Fagerström Test for Nicotine Dependence (FTND) was used to diagnose the degree of nicotine dependence among group of smokers attended the smoking cessation clinic at National Research Centre during the period of the study.
The results concluded that most of those attending smoking cessation clinic were of moderate nicotine dependence, due to their feeling of the importance of medical assistance role in stop smoking. It was detected that age and gender of the smokers have no role in developing nicotine dependence. But, most of the females asking for medical assistance to stop smoking were with moderate to high nicotine dependence. Highly educated persons were more aware about the importance of medical assistance for smoking cessation. But, educational levels and personal careers found to have no significant impact on nicotine dependence. Additionally, no significant roles of the age of initial smoking and previous history of psychological problems were detected in developing nicotine dependence.

Application of nanomagnetic-hydroxyapatite in removal of Cd ions from their aqueous solutions
S. A. Abo-El-Enein, 1 H. A. El boraey, 2 R. M. El-korashy, 3A. A. Sery 3*
(1) Chemistry Department, Faculty of Science, Ain Shams University, Egypt
(2) Chemistry Department, Faculty of Science, Menoufia University, Egypt
(3) National Water Research Center, CLEQM, Egypt
* Corresponding author Tel.: 01110208950
E-mail address: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
Nanomagnetic-hydroxyapatite (NMHAp) has been synthesized and characterized by means of FTIR and TEM analysis. The sample was tested for the removal of Cd2+ ions from their aqueous solutions using batch method. The presence of magnetic particles facilitates the recovery of adsorbent after adsorption process. The specific surface area of the prepared sample is about 58 m2/g. The uptake value obtained was 80.72 mg/g. Results showed that the Langmuir isotherm better fits sorption data than Freundlich model. Factors influencing the removal percent as pH, contact time, adsorbent dose and initial metal ion concentration have been discussed.

Environmental and Social factors influencing in nicotine dependence detected through using Fagerström Test for Nicotine Dependence
Amal Saad-Hussein, Asmaa Mahmoud Mohammed, Salwa F Hafez, Eman El-Tahlawy, Weam Shaheen, Mona A. Helmy, Mohamed El-Hamshary
Environmental & Occupational Medicine Department and Smoking Cessation Clinic,
National Research Centre, Egypt
Abstract
This study examined the possible environmental and social factors that may be involved in the nicotine dependence. Fagerström Test for Nicotine Dependence (FTND) was used to diagnose the degree of nicotine dependence among group of smokers attended the smoking cessation clinic at National Research Centre during the period of the study.
The results concluded that most of those attending smoking cessation clinic were of moderate nicotine dependence, due to their feeling of the importance of medical assistance role in stop smoking. It was detected that age and gender of the smokers have no role in developing nicotine dependence. But, most of the females asking for medical assistance to stop smoking were with moderate to high nicotine dependence. Highly educated persons were more aware about the importance of medical assistance for smoking cessation. But, educational levels and personal careers found to have no significant impact on nicotine dependence. Additionally, no significant roles of the age of initial smoking and previous history of psychological problems were detected in developing nicotine dependence.