The Department of Materials Engineering at the University of Technology awarded a master's degree to the student, Ali Hussein Abdul Jabbar, Department of Materials Engineering / University of Technology for his thesis titled

"Green Synthesis and Surface Modification of Nanoparticles for Wastewater Treatment"

Abstract

This study focused on the green synthesis of silver nanoparticles using two separate heating techniques—hotplate and microwaves—with turnip root extract as the reducing and stabilizing agent. Furthermore, the green synthesis of graphene foam using date syrup carbon source, combined with potassium chloride as a substrate. The foam was modified with the prepared silver nanoparticles to enhance heavy metal removal and antibacterial efficiency. Silver nanoparticles with an average size of 47.5 nm, confirmed by scanning electron microscopy (SEM), demonstrated stability via zeta potential analysis. The graphene foam's morphology and structure were characterized using SEM and Raman spectroscopy. Filtration tests by atomic absorption indicated high removal efficiencies for cadmium (68%) and lead (39%), with lower efficiencies for zinc (10%) and chromium (27%). The addition of silver nanoparticles improved removal efficiencies for Cd²⁺ (75%), Zn²⁺ (22%), and Cr²⁺ (33%). The antibacterial efficacy test showed a 100% bacterial-killing rate post-modification.

the discussion committee consisted of ladies and Gentlemen

Asst. Prof. Dr. Khaled Khader Abbas, Chairman Prof.

Asst. Prof. Dr. Abeer Farouk Abbas, member

Asst. Prof. Aseel Mahmoud Abdullah, member

Asst. Prof. Dr Mayada Shanan Abdel, as a supervisor

Asst. Prof. Dr. Basma Hashem Mohammed, as a supervisor

In addition, the thesis was scientifically evaluated by Prof. Dr. Basma Mohammed Fahd, and Asst. prof. Dr. Ali Abdul Wahab Aati, and linguistically by Asst. prof. Dr. Jamal Jalal Daoud

The Department of Materials Engineering at the University of Technology awarded a master's degree to the student, Aqeel Ibrahim Hadi, Department of Materials Engineering / University of Technology for his thesis titled

” Fabrication of Geopolymer Concrete with Light Weight Artificial Aggregate as an Eco-friendly Construction Materials “

the discussion took place in the postgraduate hall located in Building B within the department on Sunday, 23/6/2024 at nine o'clock in the morning, and the discussion committee consisted of ladies and Gentlemen

Prof. Dr. Mohammed Abdul Hussein Mohammed, Chairman.

Asst. Prof. Dr. Mayada Shanan Abdel, member

Asst. Prof.  Dr. Nasir Abdul Hussein Nasser member

Prof. Dr. Aseel Bassem Abdul Hussein as a member and supervisor

 Asst. Prof. Dr. Laith Wadah Ismail as a member and supervisor

In addition, the thesis was scientifically evaluated by Prof. Dr. Inas Mohi Hadi, Asst. Prof. Dr. Ahmed Muzaffar Hashim, and linguistically by Asst. prof. Dr. Jamal Jalal Daoud / University of Technology/Department of Materials Engineering.

After the examination committee recorded its comments on the thesis, which covered both explanation and correction, the student's defense of her thesis, and the conclusion of the discussion, the committee convened to evaluate the thesis. They decided to award the student a Master’s degree with a pass grade

Abstract

The study aims to fabricate geopolymer concrete with high mechanical properties and acceptable thermal insulation using waste materials like fly ash, Kufa cement plant waste, and glass waste powder. The concrete's mechanical properties were evaluated using tests like hardness, compressive strength, flexural strength, and splitting tensile strength. In contrast, water absorption, porosity, and thermal insulation tests used to evaluate physical properties, X-ray techniques, infrared spectroscopy, and scanning electron microscopy were used to evaluate the structure and chemical composition. The results show the possibility of manufacturing environmentally friendly concrete using some waste that has better mechanical and thermal insulation properties with minimal CO2 emissions than ordinary Portland concrete.