Abdelhadi Makan has a Ph.D. in waste management and environmental sciences. He gained relevant professional experience in fields such as environmental science, chemistry, and waste management. Through all his academic and professional publications, he has fully practiced both qualitative and quantitative research methods. Additionally, he is the founder and CEO of ENQUAS Consulting, which is an investigation and consultancy office practicing in environmental, quality and safety domains. Currently, he works as a full-time professor at the National School of Applied Sciences (ENSAH), Abdelmalek Essaâdi University, Morocco. In his spare time, he acts as an editorial board member, reviewer, and proofreader for several reputed scientific journals.