Browsing Central Laboratories Unit Research by Author "Ahmad, Mohammad I."
Now showing items 1-14 of 14
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Catalytic Degradation of 4-Ethylpyridine in Water by Heterogeneous Photo-Fenton Process
Bensalah, Nasr; Ahmad, Mohammad I.; Ahmed, Bedoui ( MDPI , 2019 , Article)In this work, the degradation of 4-ethylpyridine (4EP) in water by a heterogeneous photo-Fenton process (H2O2/Fe3O4/ultraviolet irradiation (UV)) was investigated. More rapid and effective 4EP degradation was obtained with ... -
Concentrations of essential and toxic elements and health risk assessment in brown rice from Qatari market
Shraim, Amjad M.; Ahmad, Mohammad I.; Rahman, Mohammad Sulaiman F.; Ng, Jack C. ( Elsevier , 2022 , Article)Twenty-two brown rice varieties available in the Qatari market were analyzed for essential and toxic elements by ICP-MS. Found concentrations (µg/kg) were: As: 171 ± 78 (62–343), Cd: 42 ± 60 (4–253), Cr: 515 ± 69 (401–639), ... -
Degradation of hydroxychloroquine by electrochemical advanced oxidation processes
Bensalah, Nasr; Sondos, Midassi; Ahmad, Mohammad I.; Ahmed, Bedoui ( Elsevier , 2020 , Article)In this work, the degradation of hydroxychloroquine (HCQ) drug in aqueous solution by electrochemical advanced oxidation processes including electrochemical oxidation (EO) using boron doped diamond (BDD) and its combination ... -
Degradation-fragmentation of marine plastic waste and their environmental implications: A critical review
Sarra N., Dimassi; Hahladakis, John N.; Yahia, Mohamed Najib Daly; Ahmad, Mohammad I.; Sayadi, Sami; Al-Ghouti, Mohammad A.... more authors ... less authors ( Elsevier , 2022 , Article Review)This review critically evaluates the plastic accumulation challenges and their environmental (primarily) and human (secondarily) impacts. It also emphasizes on their degradation and fragmentation phenomena under marine ... -
Effect of temperature and sunlight on the leachability potential of BPA and phthalates from plastic litter under marine conditions
Sarra N., Dimassi; Hahladakis, John N.; Yahia, Mohamed Nejib Daly; Ahmad, Mohammad I.; Sayadi, Sami; Al-Ghouti, Mohammad A.... more authors ... less authors ( Elsevier , 2023 , Article)This study investigates the leaching potential of several additives embedded in six different plastic types when exposed to extreme simulated marine conditions for 140 days. The findings achieved herein contribute to a ... -
Electrochemical oxidation/disinfection of urine wastewaters with different anode materials
Dbira, Sondos; Bensalah, Nasr; Ahmad, Mohammad I.; Bedoui, Ahmed ( MDPI , 2019 , Article)In the present work, electrochemical technology was used simultaneously for the deactivation of microorganisms and the destruction of micro-pollutants contained in synthetic urine wastewaters. Microorganisms (E. coli) were ... -
Electrochemically stable tunnel-type α-MnO2-based cathode materials for rechargeable aqueous zinc-ion batteries
De Luna, Yannis; Alsulaiti, Asma; Ahmad, Mohammad I.; Nimir, Hassan; Bensalah, Nasr ( Frontiers Media , 2023 , Article)The purpose of this study is the synthesis of α-MnO2-based cathode materials for rechargeable aqueous zinc ion batteries by hydrothermal method using KMnO4 and MnSO4 as starting materials. The aim is to improve the ... -
Electrolytic oxidation as a sustainable method to transform urine into nutrients
Bensalah, Nasr; Dbira, Sondos; Bedoui, Ahmed; Ahmad, Mohammad I. ( MDPI , 2020 , Article)© 2020 by the authors. In this work, the transformation of urine into nutrients using electrolytic oxidation in a single-compartment electrochemical cell in galvanostatic mode was investigated. The electrolytic oxidation ... -
Immobilization of heavy metals by microbially induced carbonate precipitation using hydrocarbon-degrading ureolytic bacteria
Zulfa Al, Disi; Attia, Essam; Ahmad, Mohammad I.; Zouari, Nabil ( Elsevier , 2022 , Article)Crude oil contamination introduces multiple threats to human health and the environment, most of which are from toxic heavy metals. Heavy metals cause significant threats because of their persistence, toxicity, and ... -
Insights into the degradation mechanism of PET and PP under marine conditions using FTIR
Sarra N., Dimassi; Hahladakis, John N.; Yahia, Mohamed Najib Daly; Ahmad, Mohammad I.; Sayadi, Sami; Al-Ghouti, Mohammad A.... more authors ... less authors ( Elsevier , 2023 , Article)Plastics possess diverse functional properties that have made them extremely desirable. However, due to poor waste management practices, large quantities eventually end up in the oceans where their degradation begins. ... -
Investigation on the effect of several parameters involved in the biodegradation of polyethylene (PE) and low-density polyethylene (LDPE) under various seawater environments
Sarra N., Dimassi; Hahladakis, John N.; Chamkha, Mohamed; Ahmad, Mohammad I.; Al-Ghouti, Mohammad A.; Sayadi, Sami... more authors ... less authors ( Elsevier , 2024 , Article)This work investigates the biodegradation of polyethylene (PE) and low-density polyethylene (LDPE) and the leaching of their harmful additives. Micro/macro-plastics of both types were subjected to different laboratory-controlled ... -
Mineralization of Riluzole by Heterogeneous Fenton Oxidation Using Natural Iron Catalysts
Bensalah, Nasr; Neily, Emna; Bedoui, Ahmed; Ahmad, Mohammad I. ( MDPI , 2022 , Article)Fenton (H2O2/Fe2+) system is a simple and efficient advanced oxidation technology (AOT) for the treatment of organic micropollutants in water and soil. However, it suffers from some drawbacks including high amount of the ... -
Spectrophotometric Determination of the Honey Bee Quality
Alsafran, Mohammed H.; Akkbik, Mohammed; Ahmadi, Ahmad A.; Ahmad, Mohammad I. ( Qatar University Press , 2021 , Poster)Honey produced by bees from nectar in flowers and plants, is an aqueous supersaturated sugar solution, mainly monosaccharide (fructose and glucose) (70%–80%) and water (10%–20%). 5-Hydroxymethylfurfural (5-HMF) content in ... -
Synthesis of Novel Aqua ƞ4-NNNO/Cu(II) Complexes as Rapid and Selective Oxidative Catalysts for O-Catechol: Fluorescence, Spectral, Chromotropism and Thermal Analyses
Shraim, Amjad M.; Salih, Kifah S.M.; Al-Soufi, Ranim E.; Al-Mhini, Soaad R.; Ahmad, Mohammad I.; Warad, Ismail... more authors ... less authors ( MDPI , 2021 , Article)A new tetradentate Schiff base (SB), (E)-4-fluoro-2-(1-((2-(piperazin-1-yl)ethyl)imino)ethyl)phe-nol, was synthesized from condensation of 2-(1-piperazinyl)ethylamine and 5-fluoro-2-hydroxyacetophe-none. This ligand was ...