Abdelkawi Khalifa

Abdelkawi Khalifa

Ain Shams University

H-index: 11

Africa-Egypt

Abdelkawi Khalifa Information

University

Ain Shams University

Position

Professor of Hydraulics. Faculty of Engineering

Citations(all)

474

Citations(since 2020)

132

Cited By

331

hIndex(all)

11

hIndex(since 2020)

6

i10Index(all)

12

i10Index(since 2020)

4

Email

University Profile Page

Ain Shams University

Abdelkawi Khalifa Skills & Research Interests

Hydraulics

Networks hydraulics

Water Resources

Top articles of Abdelkawi Khalifa

Estimation of the flood vulnerability index (FVI) for Alexandria city, Egypt: A case study

Climate change and urbanization are likely to increase the vulnerability of cities by increasing the intensity of flooding, which causes damage to the communities. The objective of this research is to estimate the Flood Vulnerability Index (FVI) for Alexandria City to assist decision-makers develop priority urban flood plans and identify methods for reducing flood risk. In this study, the FVI is generally estimated throw three components: social, physical, and environmental. Moreover, eleven major indicators are used to represent each of these three components, and they are classified according to the three flood factors: exposure, susceptibility, and resilience. Geographic information system (GIS), and remote sensing (RS) are applied to obtain the required data and develop maps for identifying the urban flood indictors. The study area has been divided to 16 zones regarding its administrative classification The 16 zones in Alexandria city's Vulnerability Index for the three components (social, physical , and environmental ) and the overall FVI have been estimated. Population, population density, population access to sanitation, and warning system are used as the four indicators for the social component, whereas the four indicators used for the physical components, are approximately of stream, elevation, rainfall amount , and slope. The environmental component, is evaluated by using three indicators , land use, urban growth, and flood recovery time. The index assigns a number among 0 and 1, indicating relatively low or high urban flood vulnerability. The findings demonstrate that FVI offers a way to assess flood vulnerability and obtain appropriate …

Authors

Mai Mohamed Afifi,Abdelkawi A Mokhtar Khalifa,Rifaat Abdel Wahaab,Ibrahim Moukhtar,Ezzat Elalfy

Journal

JES. Journal of Engineering Sciences

Published Date

2023/5/1

Sensitivity Analysis for Multi-Criteria Decision Analysis Framework for Site Selection of Aquifer Recharge with Reclaimed Water

The pressure on Egypt’s limited water resources has increased as a result of the country’s growing industrial and agricultural sectors, coupled with climate change impacts and population growth. To overcome the current water stress situation, the utilization of new technologies such as managed aquifer recharge (MAR) is thought to be key for expanding the use of non-conventional water resources and providing necessary water supplies. Managed aquifer recharge can boost groundwater recharge and promote greater water accessibility. Suitability maps for MAR are widely offered as a tool to aid in decision-making in the context of balancing water demand and supply. Conducting a sensitivity analysis to validate suitability mapping can enhance the understanding of the results and pinpoint the influencing factors. The West Delta region was chosen as a case study given the existence of two MAR sites to examine the suitability of implementing MAR projects with reclaimed water. In this work, a spatially explicit sensitivity analysis is performed on a newly developed framework for MAR suitability maps that use multi-criteria decision analysis (MCDA) to determine suitable locations for MAR implementation, using spreading methods techniques. The performed sensitivity analysis uses spatial visualization to examine the effect of various weighted criteria on the final outputs and identifies criteria that are especially sensitive to weight changes. The results of the sensitivity analysis indicate that the applied MCDA framework for the suitability mapping in West Delta produced robust results in terms of the most suitable sites for MAR. The obtained results also …

Authors

Heba Mohamed Hani,Mohamed M Nour El Din,Abdelkawi Khalifa,Ezzat Elalfy

Journal

Sustainability

Published Date

2023/3/17

LEAKAGE ASSESSMENT IN WATER DISTRIBUTION NETWORKS USING HYDRAULIC MODEL CALIBRATION.

A hydraulic analysis of Egypt's district metered area (DMAs) is a significant undertaking that creates a permanent monitoring system and eliminating leaks is highly expensive and time-consuming. More than 40% of water networks in Egypt are over 40 years old. Consequently, Egypt loses around 30% of daily water produced, which accounts for 25.5 Million m³. In this study, Darwin Calibrator was used to predict the proximate location of water leakage in a DMA. This study presents a physically-based method for WDNs calibration of hydraulic models which intends to support leakage, assessment, monitoring and management from the initial stages. Results indicated that the mean pressure (Pa) for inlet at Elshewash measuring point was 20.89 (Pa) and the mean flow was 18.3 (m³). Conversely, mean pressure for outlet was 18.3 (Pa) and mean flow was 8.22 (m³). At Rawafee El Quser measuring points was1. 89 (Pa …

Authors

Mona Rafat Elkharbotly,Abdelkawi Khalifa,Mohamed Seddik

Journal

Environmental Engineering & Management Journal (EEMJ)

Published Date

2023/3/1

corrected Proof

Superhydrophobic-superoleophilic fabrics were prepared and evaluated for oil–water mixture separation efficiencies. The nano-TiO2 and nano-SiO2 based coatings were done on the surface of the cotton fabric to create nanoscale roughness over the surface which was further modified by low energy material 1, 1, 3, 3-Hexamethyldisilazane (HMDS) and, polydimethylsiloxane (PDMS). Particle size and stability of prepared sol were characterized by particle size analysis and zeta potential. Coated cotton fabric samples were characterized by contact angle, contact angle hesteresis and surface free energy for its hydrophobic nature. Surface morphology was studied by scanning electron microscopy (SEM). The coated fabrics were found to be hydrophobic with low surface free energy values. The maximum contact angle was found to be 133 and lowest contact angle hysteresis was 5. SEM confirmed the appearance of nanoscale surface roughness after coating of sols on cotton fabric. The average particle size and zeta potential values of silica sol was 61 nm and 137 mv whereas for titania sol it was found 344 nm and 200 mv, respectively. The oil–water separation efficiency of coated fabric was also observed by a different oil–water mixture. The coatings were found to be hydrophobic in nature and seem to be very useful for oil–water mixture separation.

Authors

Neha Bhatt,Abhilasha Mishra

Published Date

2021

Development of suitability map for managed aquifer recharge: Case study, West Delta, Egypt

Managed aquifer recharge (MAR) is considered an innovative method for storing water in the subsurface. In this work, multi-criteria decision analysis (MCDA) was used to delineate potential groundwater recharge areas for MAR implementation in Western Delta using reclaimed wastewater. By employing geographical information systems (GIS) and pairwise comparison matrix (PCM), a modified approach was utilized for the development of the suitability map by capturing the interlinkages between a specified MAR technique (spreading methods) and MAR suitability mapping processes. The developed approach was created with a range of constraining and factorial considerations. Based on the findings, MAR potential recharge zones included four main suitability classes. The presence of high-suitability areas was mainly delineated in the northeast part, particularly around the left …

Authors

Heba Mohamed Hani,Mohamed M Nour El Din,Abdelkawi Khalifa,Ezzat Elalfy

Journal

AQUA—Water Infrastructure, Ecosystems and Society

Published Date

2023/6/1

Toward sustainable water: prediction of non-revenue water via artificial neural network and multiple linear regression modelling approach in Egypt

BackgroundThis research paper studied the parameters affecting the non-revenue water in Egypt. The neural model was developed to forecast the NRW ratio before and after network rehabilitation using main parameters and statistical data for various measured district metered areas (DMAs) in Egypt. The non-revenue water (NRW) ratio is a parameter of significant concern for the water distribution system's performance evaluation. Therefore, NRW ratio parameter evaluation requires analysis of variables that influence the NRW ratio.Aim/objectiveThis study aims to offer findings that will lay the basis for sustainable water resources management in Egypt.Consequently, a comprehensive evaluation of water distribution systems and parameters affecting NRW was conducted.MethodologyThe predictive models were developed using the historical data of the water company for various measured district metered areas …

Authors

Mona Rafat Elkharbotly,Mohamed Seddik,Abdelkawi Khalifa

Journal

Ain Shams Engineering Journal

Published Date

2022/9/1

Studying the effect of design parameters on riverbank filtration performance for drinking water supply in Egypt: a case study

Riverbank filtration (RBF) is an affordable technique to provide drinking water with adequate quality. The ultimate objective of this study is to facilitate the transferability and application of this sustainable technique in Egypt. In this work, a numerical model was constructed using Groundwater Modeling System (GMS) to study the effect of four design parameters on the RBF performance parameters (i.e., river filtrate portion and travel time) with the aid of MODPATH and ZONEBUDGET. The design parameters were: (1) the pumping rates of the RBF wells, (2) number of operating wells, (3) distance between wells and the river, and (4) the spacing between wells. This study was focused on the hydraulic aspects of the technique. The results demonstrated that: (1) the river filtrate portion exceeds 75% regardless of the design conditions, and (2) the hydraulic performance of the RBF technique is highly controlled by the …

Authors

Heba Mamdouh,Rifaat Abdel Wahaab,Abdelkawi Khalifa,Ezzat Elalfy

Journal

Water Supply

Published Date

2022/3/1

Abdelkawi Khalifa FAQs

What is Abdelkawi Khalifa's h-index at Ain Shams University?

The h-index of Abdelkawi Khalifa has been 6 since 2020 and 11 in total.

What are Abdelkawi Khalifa's top articles?

The articles with the titles of

Estimation of the flood vulnerability index (FVI) for Alexandria city, Egypt: A case study

Sensitivity Analysis for Multi-Criteria Decision Analysis Framework for Site Selection of Aquifer Recharge with Reclaimed Water

LEAKAGE ASSESSMENT IN WATER DISTRIBUTION NETWORKS USING HYDRAULIC MODEL CALIBRATION.

corrected Proof

Development of suitability map for managed aquifer recharge: Case study, West Delta, Egypt

Toward sustainable water: prediction of non-revenue water via artificial neural network and multiple linear regression modelling approach in Egypt

Studying the effect of design parameters on riverbank filtration performance for drinking water supply in Egypt: a case study

are the top articles of Abdelkawi Khalifa at Ain Shams University.

What are Abdelkawi Khalifa's research interests?

The research interests of Abdelkawi Khalifa are: Hydraulics, Networks hydraulics, Water Resources

What is Abdelkawi Khalifa's total number of citations?

Abdelkawi Khalifa has 474 citations in total.

What are the co-authors of Abdelkawi Khalifa?

The co-authors of Abdelkawi Khalifa are Iman Elazizy.

    Co-Authors

    H-index: 4
    Iman Elazizy

    Iman Elazizy

    Ain Shams University

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