Basic Informations

C.V

Associated Professor. Moaaz Korany Seliem Hassan Lecturer, Department of Geology, Faculty of Science, Beni-Suef University, Egypt Personal Data: Full Name: Moaaz Korany Seliem Hassan Date of Birth: 24/2/1976, Beni-Suef. Nationality: Egyptian. Sex: Male Marital Status: Married Work Address: Beni-Suef University, Faculty of science, Geology Department, Beni-Suef University, Egypt Mobile: 002 01098740363 Fax: 822337398 E-mail: debakyms @ yahoo.com ACADEMIC CAREER AND EXPERIENCES: 1- July 1999–July 2005: Demonstrator at Geology Department, Faculty of Science, Beni-Suef branch, Cairo University 2- August 2005: Assistant lecturer at Geology Department, Faculty of Science, Beni-Suef University. 3- Vesting Scholar in Materials Research Institute (MRI), The Pennsylvania State University, University Park, PA 16802, USA under the supervision of Prof. Dr. Sridhar Komarneni (25-2-2009 to 25-8-2012). 4. April 2013, Lecturer at Geology Department, Faculty of Science, Beni-Suef University, Egypt. 5. July 2018, Associated Professor at Geology Department, Faculty of Science, Beni-Suef University, Egypt. Memberships: 1- Geological Society of Egypt. 2- Mineralogical Society of Egypt. Language: Arabic: Mother tongue English: Very good Computer skills Excellent in the most common software currently being used for office work like Microsoft Word, Microsoft Excel, Microsoft Power Point and Mathematica Research Interests: 1- Synthesis of advanced ceramic materials 2- Synthesis and characterization of new types of clay minerals, porous materials and nanocomposites hybrid materials. 3- Water purification using natural, modified and synthetic materials (Kinetics, Isotherm, thermodynamic, and Statistical physics modeling). Projects: USA (Pennsylvania State University) 1- Synthetic and Modified Clays for Remediation of Soils and Water. 2- Synthesis of hybrid organosilicas for uptake of perchlorate from water Egypt 1- Water treatment by flakey graphite and active carbon synthesized from El Maghara coal deposits. 2- Synthetic Organosilicas, Rice Husk Composites and Organoclays Nanocomposites for Water treatment. 3- Multidisciplinary approach for modified Egyptian bentonite clays: Preparation, characterization and preliminary evaluation for different potential applications(Italy-Egypt Project) 4- Nanocomposites and porous materials: Synthesis, characterization and their suitability for different applications (Finland-Egypt project). 5- Organic-inorganic hybrid nanocomposites: Synthesis, characterization, and potential applications. (STDF Project, under evaluation). List of Publications Moaaz K. Seliem, S. Komarneni, M. Park, H. Katsuki, M.G. Shahien, A.A. Khalil, I.M. Abd El-Gaid: Hydrothermal synthesis of Mn-kaolinite using NaOH or KOH and characterization. Applied Clay Science 06/2010; 49(s 1–2):74–79. Moaaz. K. Seliem, S. Komarneni, R. Parette, H. Katsuki, F. S. Cannon, M. G. Shahien, A. A. Khalil, I.M.A. Abd El-Gaid: Composites of MCM-41 silica with rice husk: Hydrothermal synthesis, characterisation and application for perchlorate separation. Material Research Innovations 11/2010; 14(5):351-354. Moaaz K. Seliem, Sridhar Komarneni, Yunchul Cho, Taesook Lim, M. G. Shahien, A. A. Khalil, I. M. Abd El-Gaid: Organosilicas and organo-clay minerals as sorbents for toluene. Applied Clay Science 04/2011; 52(1):184-189. Moaaz K. Seliem, S. Komarneni, R. Parette, H. Katsuki, F.S. Cannon, M.G. Shahien, A. A. Khalil, I. M. Abd El-Gaid: Perchlorate uptake by organosilicas, organo-clay minerals and composites of rice husk with MCM-48. Applied Clay Science 10/2011; 53(4):621-626. Moaaz K. Seliem, S. Komarneni, T. Byrne, F.S. Cannon, M.G. Shahien, A.A. Khalil, I.M. Abd El-Gaid: Removal of perchlorate by synthetic organosilicas and organoclay: Kinetics and isotherm studies. Applied Clay Science 01/2013; 71:21–26. Moaaz K. Seliem, S. Komarneni, T. Byrne, F. S. Cannon, M. G. Shahien, A.A. Khalil, I. M. Abd El-Gaid: Removal of nitrate by synthetic organosilicas and organoclay: Kinetic and isotherm studies. Separation and Purification Technology 06/2013; 110:181-187. Moaaz K Seliem, Sridhar Komarneni, Mostafa R. Abu Khadra. Phosphate removal from solution by composite of MCM-41 silica with rice husk: kinetic and equilibrium studies. Journal of Microporous and Mesoporous Materials (2016) 224, 51–57. Moaaz K Seliem, Sridhar Komarneni. Equilibrium and kinetic studies for adsorption of iron from aqueous solution by synthetic Na-A zeolites: Statistical modeling and optimization. Journal of Microporous and Mesoporous Materials (2016) 228, 266–274. Zayed, A.M. Selim, A. Q., Mohamed, E.A., Abdel Wahed, M.S.M., Moaaz K. Seliem., Sillanpaa, M., 2017. Adsorption characteristics of Na-A zeolites synthesized from Egyptian kaolinite for manganese in aqueous solutions: Response surface modeling and optimization. Applied Clay Science 140, 17–24. Selim, A.Q., Mohamed, E.A., Mobarak, M., Zayed, A.M., Moaaz K. Seliem, Komarneni, S., 2018. Cr(VI) uptake by a composite of processed diatomite with MCM-41: Isotherm, kinetic and thermodynamic studies, Microporous Mesoporous Materials 260, 84–92. Mohamed Mobarak , Ali Q. Selim, Essam A. Mohamed , Moaaz K. Seliem. A superior adsorbent of CTAB/H2O2 solution−modified organic carbon rich-clay for hexavalent chromium and methyl orange uptake from solutions. Journal of Molecular Liquids (2018) 259, 384–397. Mohamed Mobarak , Ali Q. Selim, Essam A. Mohamed , Moaaz K. Seliem. Modification of organic matter-rich clay by a solution of cationic surfactant/H2O2: A new product for fluoride adsorption from solutions. Journal of Cleaner Production (2018) 192, 712–721. Ali Q. Selim, Essam A. Mohamed, Moaaz K. Seliem, Ahmed M. Zayed. Synthesis of sole cancrinite phase from raw muscovite: Characterization and optimization. Journal of Alloys and Compounds (2018). Accepted manuscript. Moaaz K. Seliem, E.A. Mohamed, A.Q. Selim, M. G. Shahien and Mostafa R. Abukhadra. Synthesis of Na-A zeolites from natural and thermally activated Egyptian kaolinite: characterization and competitive adsorption of copper ions from aqueous solutions, International Journal of Bioassays (2015), 4423–4430. Mostafa Ragab Abukhadra, Moaaz K.Seliem, Essam Abdel Rahaman Mohamed,Ali Quarny Selim1, Mahmoud Helmy Mahmoud. Application of Quadratic Polynomial Model for the Uptake of Iron from Aqueous Solutions by Natural and Modified Egyptian Bentonite. American Journal of Applied Chemistry, (2015), 179-187. E. A. Mohamed, A. Q. Selim, Moaaz. K. Seliem, Mostafa R. Abukhadra. Modeling and Optimizations of Phosphate Removal from Aqueous Solutions Using Synthetic Zeolite Na-A. Journal of Materials Science and Chemical Engineering, 2015, 3, 15-29. Reference: Prof. Dr. Sridhar Komarneni, Distinguished Professor of Clay Mineralogy, Materials Research Institute, Materials Research Laboratory, the Pennsylvania State University, University Park, PA 16802, USA. (e-mail: Komarneni@psu.edu). Prof. Dr. A. A. Khalil, Refractories, Ceramics and Building Materials Department, National Research Center, Dokki, Cairo, Egypt. (e-mail: aakhalil100@yahoo.com). Prof. Mohamed G. Shahien, Head of Geology Department, Faculty of Science, Beni-Suef University, Egypt. (e-mail: Mohgadsh@yahoo.com).

Master Title

Middle Eocene shales in Beni Suef–Fayum area: Their origin, composition and suitability for some industrial applications.

Master Abstract

composition of different three clay samples in order to evaluate their suitability for preprtaion of ceramic bodies. Methodology Channel samples were collected, crushed and grounded. The physical properties of the selected clays were studied. The ceramic bodies were dried and fired at different conditions. The fired clays were characterized and applied for cermic industry. Results The present study deals with the geological, mineralogical and ceramic investigations of three different clay varieties collected from Qarara, Kom-Oshim and Qalamsha regions in Beni Suef-Fayum area, Egypt. The mineral and chemical constituents of these samples were determined using Differential thermal analysis (DTA), thermogravimetric analysis (TG) and X-ray diffractions (XRD) in addition to (X-ray fluorescence (XRF). The evaluation of the raw materials was carried out by determining the physical properties of the studied clays such as slacking time, compactness, grain size distribution and plasticity. Ceramic bodies, made using the investigated samples, were prepared and fired at different temperatures ranging from 900 to 1200 °C. The fired bodies were assessed by determining their physico-mechanical properties including water absorption, apparent porosity, bulk density, firing change and compressive strength. Moreover, phase composition of the fired ceramic bodies and their microstructures were evaluated using XRD and SEM techniques. Firing properties of the tested clay samples suggest that Qarara and Qalamsha samples are suitable for production of heavy clay products, ceramic tile, building bricks, etc. Kom-Oshim sample is recommended for various ceramic products as vitrified ceramic tiles, insulating bricks, etc.

PHD Title

Synthesis, Characterization and property evaluation of some Alumeniumsilicate materials"

PHD Abstract

The objectives of this thesis were (a) to synthesize and characterize a variety of organosilicas, organo-clay minerals and composites of rice husks (b) to study the uptake of perchlorate and toluene by the synthetic materials and organo-clay minerals procured from two commercial sources (c) to study the adsorption mechanism of perchlorate and nitrate using the best materials by fitting the experimental data to different kinetics and adsorption models and (d) to determine perchlorate and nitrate selectivity by some of these materials. In this study, mesoporous MCM-41 silica and rice husk composites were synthesized under hydrothermal conditions using cetyltrimethylammonium bromide (CTAB) as an organic template, aqueous ammonia solution (NH4OH) and rice husk, the latter as a silica source and substrate for the deposition of MCM-41. Both untreated and carbonized rice husks were used for preparing composites at a temperature of 100–120ºC for 24–48 h. The as synthesized composites or hybrid materials were characterized by using X-ray diffraction (XRD) and scanning electron microscopy (SEM) and they were found to be useful for the uptake of perchlorate. These composites could be used to separate perchlorate from solutions in column operation without the necessity for their pelletisation because the rice husk substrates are several millimeters in size. This thesis work also investigated the adsorption of toluene as a non-ionic organic contaminant by organosilicas and organo-clay minerals. Different organic surfactants were used to prepare a variety of MCM-41 molecular sieves at room temperature while cetyltrimethylammonium (CTMA) bromide was used to synthesize MCM-48 mesoporous material under hydrothermal conditions. Organo-clay minerals were synthesized under hydrothermal conditions using synthetic low-charge Na-fluorophlogopite micas with CTMA bromide as organic surfactant. All synthetic organosilicas and organo-clay minerals, the latter including those procured from two commercial sources were characterized by (XRD) and their toluene sorption properties were investigated. Among organosilicas, MCM-48 exhibited the highest distribution coefficient (Kd) value of toluene (95±9 L/kg). An organo-clay mineral, Nanomer® PGW montmorillonite modified with CTMA bromide (Nanomer® 1.28E) showed the maximum Kd value (345±22 L/kg) for toluene among all the studied organosilicas and organo-clay minerals. The organo-clay mineral nanocomposites were found to be superior to as-synthesized MCM-41 and MCM-48 organosilicas tested here and the former could find applications in remediating organic contaminants such as toluene from soil and groundwater. In this thesis, a variety of oraganosilicas such as MCM-41 and MCM-48 and composites of rice husks with MCM-48 were synthesized under an array of conditions and characterized by (XRD). Various MCM-41 mesoporous materials were prepared at room temperature using different surfactants. MCM-48 silica and its composites with rice husks were synthesized under hydrothermal conditions using (CTMA) bromide and rice husks. Both untreated and carbonized rice husks were used for preparing composites of rice husk with MCM-48. Organo-clay minerals procured from two commercial sources were also investigated for their perchlorate uptake. Among the MCM-41 materials, the sample prepared from (ODTMA) chloride showed the highest perchlorate uptake capacity of 0.227±0.006 meq/g while MCM-48 showed the highest perchlorate uptake capacity of 0.437±0.011 meq/g among all the oraganosilicas and organo-clay minerals tested here. The uptake of perchlorate by organosilicas and organo-clay minerals is due to residual positive charge on the surfactants trapped in the mesopores of organosilicas and interlayers of organo-clay minerals. In addition to the above studies, (ODTMA) chloride was used to prepare MCM-41 at room temperature while MCM-48 and a mesoporous layered organosilica were synthesized under hydrothermal conditions using (CTMA) bromide. These synthetic organosilica materials in addition to a commercially available organoclay, Cloisite® 10A were characterized by powder (XRD) and tested with the occluded surfactant as sorbents for perchlorate and nitrate. Adsorption data were modeled using the Langmuir and Freundlich adsorption isotherms. Adsorption kinetics data were tested using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. The results showed that the highest perchlorate uptake capacities were achieved with MCM-48 silica (0.421±0.007 meq/g) followed by mesoporous layered organosilica (0.400±0.006 meq/g). Cloisite® 10A and MCM-41 silica adsorbed 0.280±0.003 and 0.246±0.003 meq/g of perchlorate, respectively. On the other hand, the highest nitrate uptake capacities were achieved with Cloisite® 10A (0.359±0.003 meq/g) followed by a layered organosilica (0.287±0.008 meq/g). MCM-48 and MCM-41 silica adsorbed 0.096±0.002 and 0.157±0.005 meq/g of nitrate, respectively. Kinetics studies showed that the adsorption followed pseudo-second-order kinetics model. The good fit of the experimental data and the values of correlation coefficients (R2) indicated the applicability of Langmuir model to perchlorate and nitrate adsorption in the present study. The selectivity of one ion over another is a function of charge and hydration status of ions and steric factors of the ion exchanger and hence further studies are needed to decipher the selectivity mechanism.