Haitham Elnakar

Dr. Haitham Elnakar

Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Ash Sharqīyah, Saudi Arabia
orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 March 2016 in Environmental Science & Technology
Verified
Journal Article
Closed access
CWChengjin Wang
Chengjin Wang
NKNikolaus Klamerth
Nikolaus Klamerth
RHRongfu Huang
Rongfu Huang
HEHaitham Elnakar
Haitham Elnakar
Mohamed GamalMohamed Gamal
Mohamed Gamal

31 March 2023 in Toxics
Verified
Journal Article
Open access
PDF file
UIUsman Muhammad Ismail
Usman Muhammad Ismail
HEHaitham Elnakar
Haitham Elnakar
MKMuhammad Faizan Khan
Muhammad Faizan Khan
The occurrence of sand and dust storms (SDSs) is essential for the geochemical cycling of nutrients; however, it is considered a meteorological hazard common to arid regions because of the adverse impacts that SDSs brings with them. One common implication of SDSs is the transport and disposition of aerosols coated with anthropogenic contaminants. Studies have reported the presence of such contaminants in desert dust; however, similar findings related to ubiquitous emerging contaminants, such as per- and poly-fluoroalkyl substances (PFAS), have been relatively scarce in the literature. This article reviews and identifies the potential sources of dust-associated PFAS that can accumulate and spread across SDS-prone regions. Furthermore, PFAS exposure routes and their toxicity through bioaccumulation in rodents and mammals are discussed. The major challenge when dealing with emerging contaminants is their quantification and analysis from different environmental media, and these PFAS include known and unknown precursors that need to be quantified. Consequently, a review of various analytical methods capable of detecting different PFAS compounds embedded in various matrices is provided. This review will provide researchers with valuable information relevant to the presence, toxicity, and quantification of dust-associated PFAS to develop appropriate mitigation measures.

1 March 2020 in Science of The Total Environment
Verified
Journal Article
Closed access
HEHaitham Elnakar
Haitham Elnakar
IBIan Buchanan
Ian Buchanan

16 July 2024 in Scientific Reports
Verified
Journal Article
Open access
PDF file
ITIbrahim Tabash
Ibrahim Tabash
HEHaitham Elnakar
Haitham Elnakar
MKMuhammad Faizan Khan
Muhammad Faizan Khan
This study explores the optimization of iron electrocoagulation for treating laundry greywater, which accounts for up to 38% of domestic greywater. Characterized by high concentrations of surfactants, detergents, and suspended solids, laundry greywater presents complex challenges for treatment processes, posing significant environmental and health risks. Utilizing response surface methodology (RSM), this research developed a second-order polynomial regression model focused on key operational parameters such as the area-to-volume ratio (A/V), current density, electrolysis time, and settling time. Optimal treatment conditions were identified: an A/V ratio of 30 m2/m3, a current density of 10 mA/cm2, an electrolysis duration of 50 min, and a settlement period of 12 h. Under these conditions, exceptional treatment outcomes were achieved, with turbidity removal reaching 94.26% and COD removal at 99.64%. The model exhibited high effectiveness for turbidity removal, with an R2 value of 94.16%, and moderate effectiveness for COD removal, with an R2 value of 75.90%. The interaction between the A/V ratio and electrolysis time particularly underscored their critical role in electrocoagulation system design. Moreover, these results highlight the potential for optimizing electrocoagulation parameters to adapt to daily fluctuations in greywater production and meet specific household reuse needs, such as toilet flushing. This tailored approach aims to maximize contaminant separation and coagulant efficiency, balance energy use and operational costs, and contribute to sustainable water management.

12 March 2025 in Results in Engineering
Verified
Journal Article
Open access
UIUsman M. Ismail
Usman M. Ismail
KBKhalid Bani-Melhem
Khalid Bani-Melhem
MKMuhammad Faizan Khan
Muhammad Faizan Khan
HEHaitham Elnakar
Haitham Elnakar

11 October 2024 in Journal of Environmental Management
Verified
Journal Article
Closed access
SASally Alnaimat
Sally Alnaimat
Osama MohsenOsama Mohsen
Osama Mohsen
HEHaitham Elnakar
Haitham Elnakar