I'm Hatef Bassareh, graduated in Msc chemical engineering process design at Iran University of Science and Technology, one of Iran's most prestigious universities. It is not without grace that I remark that during the first semester of my master's degree, due to my strong interest in the mass transfer course, I received a grade of 17/20 from my wonderful professor, Dr. Ahmed Rahbar. I got the wonderful opportunity to meet my supervisor, Dr. Salman Movahedi Rad, during the second semester of my master's degree. He encouraged and motivated me in my study and writing articles, and he thankfully recognized and supported my worry about the heavy metals catastrophe and the accompanying threats to human health. So, as a teacher research assistant, I conduct research in the field of biochar and its ability to absorb industrial waste and pharmaceutical waste. Additionally, I worked as a Project Consultant specializing in the design of slow pyrolysis reactors in 2018. I worked as the head of Dr. Movahedirad's Process Design Laboratory at Iran University of Science and Technology, which provided me with valuable expertise for my thesis, which involved analyzing the absorption capacity of biochar formed from tree leaves as primary raw biomass from 2019 to 2021. Finally, my article was titled “Synthesis and characterization of cost-effective and high-efficiency biochar for the adsorption of lead ions from wastewater”. It was published in the Scientific Reports journal of Nature, which has an impact factor of 4.6.