Dual System for Treating Water and Generating Green Hydrogen Using Environmentally Friendly Techniques

Document Type : Original Article

Authors

1 General Manger of R&D, Alexandria Water Company, Holding Company of Water & Wastewater, Egypt.

2 Researcher, Mechanical and electrical research institute, National Water Research Centre, Egypt.

10.1088/1757-899X/975/1//iccee.2025.460402

Abstract

Due to high energy consumption used in electrocoagulation process, it is only used in some special cases in treating industrial wastewater, even though it is the most environmentally appropriate method. Combining solar electrocoagulation (SEC) technology with production of green hydrogen and oxygen for treatment plants or industrial processes using newly innovative technologies can be economically beneficial and reduce the electricity bill if considered. In this innovation, a design has been developed to create a collection system for hydrogen generated from the solar electrocoagulation (SEC) process in an engineering-reasonable manner. We also address the challenges associated with this design used in treating industrial water and generating green hydrogen as a by-product. This design achieves approximately 104 L/h of green hydrogen. The effective voltage was about 12 V, and the induced current density was about 9.38 mA/Cm2.The energy consumed was about 18.75 kWh/m3 of wastewater and the conductivity was about 1562.5 μS/Cm. This approach reduces the carbon footprint of wastewater treatment plants by reusing the oxygen produced by solar electrocoagulation and producing green hydrogen. Therefore, it must be considered that wastewater facilities have a future role in managing clean energy assets, as they have a great opportunity to produce green hydrogen using solar energy in their facilities. Water treatment plants will manage their water needs sensibly and will not compete with existing demand for water for other uses.

Keywords

The International Conference on Chemical and Environmental Engineering
Volume 13, Issue 13
13th International Conference on Chemical and Environmental Engineering (ICEE-13).
October 2025
Pages 1-13

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