Publications

Export 8 results:
Sort by: Author Title Type [ Year (Desc)]
2023
Safwat, S. M., A. Khaled, A. Elawwad, and M. E. Matta, "Dual-chamber microbial fuel cells as biosensors for the toxicity detection of benzene, phenol, chromium, and copper in wastewater: Applicability investigation, effect of various catholyte solutions, and life cycle assessment", Process Safety and Environmental Protection, vol. 170: Elsevier, pp. 1121-1136, 2023. Abstract
n/a
Safwat, S. M., M. N. A. Meshref, M. Salama, and A. Elawwad, "Influence of co-substrate existence, temperature, pH, and salt concentration on phenol removal, desalination, and power generation using microbial desalination cells", International Journal of Environmental Science and Technology, vol. 20, issue 10: Springer, pp. 10695-10712, 2023. Abstract
n/a
Safwat, S. M., N. Y. Mohamed, and M. M. El-Seddik, "Performance evaluation and life cycle assessment of electrocoagulation process for manganese removal from wastewater using titanium electrodes", Journal of Environmental Management, vol. 328: Elsevier, pp. 116967, 2023. Abstract
n/a
2022
Safwat, S. M., N. Y. Mohamed, M. N. A. Meshref, and A. Elawwad, "Adsorption of Phenol onto Aluminum Oxide Nanoparticles: Performance Evaluation, Mechanism Exploration, and Principal Component Analysis (PCA) of Thermodynamics", Adsorption Science & Technology, vol. 2022, pp. 1-14, 2022.
2019
Safwat, S. M., M. Medhat, and H. A. El-Halim, "Adsorption of phenol onto aluminium oxide and zinc oxide: A comparative study with titanium dioxide", Separation Science and Technology, vol. 54, issue 17, pp. 2840-2852, 2019.
Safwat, S. M., M. Medhat, and H. A. El-Halim, "Phenol adsorption onto kaolin and fuller’s earth: a comparative study with bentonite", Desalination and Water Treatment, vol. 155, pp. 197-206, 2019.
2018
Safwat, S. M., M. Medhat, and H. A. El-Halim, "Adsorption of phenol onto aluminium oxide and zinc oxide: A comparative study with titanium dioxide", Separation Science and Technology: Taylor & Francis, pp. 1-13, 2018. Abstract

This study conducted an investigation of aluminium oxide’s and zinc oxide’s ability to remove phenol from wastewater through adsorption, and compare of their performance with titanium dioxide. The points of zero charge for the adsorbents were determined. The highest removal efficiencies for aluminium oxide, zinc oxide, and titanium dioxide were 14.7%, 12.2% and 33.5%, respectively. Equilibrium studies demonstrated the possibility of Frendluich isotherm, Temkin isotherm, and Dubinin–Radushkevich isotherm respectively expressing the adsorption isotherms for aluminium oxide, zinc oxide, and titanium dioxide. FTIR and SEM were used in conducting investigation on adsorbents. Among the three adsorbents, titanium dioxide was the best.

2016
Ahmed, S., E. Rozaik, and H. A. El-Halim, "Performance of single-chamber microbial fuel cells using different carbohydrate-rich wastewaters and different inocula", Polish Journal of Environmental Studies, vol. 25, issue 2, pp. 503-510, 2016. Abstract

A microbial fuel cell (MFC) can use wastewater as a substrate; hence, it is essential to understand its
performance when seeded with different inocula and during the treatment of carbohydrate-rich wastewaters
to simultaneously optimize electricity production and wastewater treatment. This study investigates the performance of single-chamber membraneless MFCs used to treat three different carbohydrate-rich synthetic
wastewaters (glucose, sucrose, and soluble starch) while seeding with two different inocula (a microbial
solution containing different species of microorganisms, and anaerobic sludge). The results showed that the
highest voltages, power densities, and COD removal efficiencies were obtained using microbial fuel cells
fed with glucose-based synthetic wastewater, and were 351 mV, 218 mW/m2
, and 98.8%, respectively, for
the microbial solution, and 508 mV, 456.8 mW/m2
, and 94.3%, respectively, for the anaerobic sludge. The
lowest results of voltages, power densities, and COD removal efficiencies were obtained using microbial
fuel cells fed with the soluble starch-based synthetic wastewater, and were 281 mV, 139.8 mW/m2
, and
86.4%, respectively, for the microbial solution, and 396 mV, 277.6 mW/m2
, and 79.4%, respectively, for
the anaerobic sludge. In all experiments, the voltages and power densities obtained for the anaerobic sludge
were higher than those obtained for the microbial solution, and the COD removal efficiencies obtained for
the anaerobic sludge were less than those obtained for the microbial solution. This study determined that
voltage generation, power densities, and COD removal efficiencies were inversely proportional to the complexity of the carbohydrate used in single-chamber microbial fuel cells.

Tourism