Khedidja Allia is Professor of Chemical Engineering at the Faculty of Mechanical Engineering and Process Engineering at the Houari Boumediene University of Science and Technology (USTHB) in Algiers, Algeria, and is involved in teaching and research for PhDs and master's degree at USTHB after having been at the École Nationale Polytechnique.

She is a graduate engineer in chemical engineering at ENP, she holds a degree in fluid mechanics from the University of Algiers and a doctorate in chemical engineering from the Ecole Polytechnique and the Thames Polytechnic in London, UK.

She has to her credit, several scientific contributions in the fields of chemical engineering (multiphase systems, refining and petrochemistry, energy), environmental engineering (wastewater treatment, solid waste ...) and transdisciplinary for the formation of the engineer (ethics, DRR, training in engineering sciences), which resulted in publications in recognized scientific journals and international communications.

She has been responsible for national research projects: CNEPRU, PNR, R & D Researcher - SONATRACH, Fulbright Researcher in the Department of Mechanical and Aerospace Engineering at Cornell University, USA, and UNESCO Expert. She has been director of the North African Center for Engineering and Technology Education, satellite of UICEE - UNESCO, director of higher education at the Ministry of Higher Education and Scientific Research, director of the Institute of Industrial Chemistry of the USTHB, and Head of the Department of Chemical Engineering at ENP, in addition to having chaired the scientific councils of the Institute of Industrial Chemistry and that of the Department of Chemical Engineering at the USTHB and the Department of Chemical Engineering of the ENP.

She coordinated the committees of the reform of higher education and the adequacy of training in industrial chemistry and industry. She chaired the commission on Maghreb equivalence systems and chaired the Pôle universitaire et de recherche algéro-québécois. She has also been a member of the American Institute of Chemical Engineers and is a member of the Arab Environmental Ethics Network (ANEE) and a founding member of the Women's Executive Association. She currently chairs the Algerian scientific association for the promotion of engineering sciences TAHENDUS and is a member of the Advisory Committee of the Network of Bioethics of the Arab Region installed by UNESCO. She is a founding member of the Algerian Academy of Science and Technology.

She has received several awards, including that of the President of the Republic of Algeria in 2007, the Silver Badge - UNESCO International Center for Engineering Education in Mumbai, India, the UICEE Gold badge at Polytechnic University - Brooklyn, USA and the UICEE Order for excellence in engineering education at TEI of Piraeus, Athens, Greece.