Dereje Diriba | Environmental Science | Editorial Board Member

Dr. Dereje Diriba | Environmental Science | Editorial Board Member

Dilla University | Ethiopia

Author Profile

Scopus

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Early Academic Pursuits

Dr. Dereje Diriba’s academic journey began in his homeland, where he pursued his elementary and secondary education with dedication and perseverance. His early passion for science and learning motivated him to progress steadily through his formative years, eventually laying the foundation for his higher education. He developed a strong interest in chemistry and environmental sciences, which later became the cornerstone of his research and professional career. His pursuit of knowledge led him to earn multiple advanced degrees, demonstrating both academic resilience and a commitment to solving pressing environmental challenges.

Professional Endeavors

Dr. Diriba’s professional career spans teaching and research across schools and universities in Ethiopia. He began as a high school chemistry teacher, where he inspired young learners with a passion for scientific inquiry. Transitioning into academia, he served as a lecturer in chemistry and environmental sciences at Wolaita Sodo University and later at Dilla University. Over time, his expertise and contributions elevated him to the position of Assistant Professor in Environmental Science with a specialization in environmental analytical chemistry. Through his teaching, he has mentored many students, equipping them with the knowledge and skills to address real-world environmental concerns.

Contributions and Research Focus

Dr. Diriba’s research is deeply rooted in environmental analytical chemistry, with a particular emphasis on sustainable water treatment and waste management. His doctoral research examined the efficacy of plant-derived coagulants and disinfectants from indigenous species for water purification in the Borana Zone, highlighting the importance of natural resources in solving local challenges. His publications reflect a wide range of investigations, from groundwater quality assessments to the comparative effectiveness of natural and chemical coagulants, as well as solid waste management strategies and soil fertility improvement through compost application. His contributions not only advance scientific understanding but also provide practical solutions to environmental issues affecting communities.

Accolades and Recognition

Over the course of his career, Dr. Diriba has earned recognition for his commitment to excellence in research and teaching. His advanced certifications in environmental toxicology, occupational hygiene, and environmental health training from collaborations with leading universities underscore his pursuit of specialized knowledge. His research publications in reputable international journals further testify to his academic impact and recognition within the global scientific community. Such achievements reflect both his scholarly rigor and his dedication to addressing critical environmental problems through research and innovation.

Impact and Influence

Dr. Diriba’s influence extends beyond the classroom and laboratory, as his work has direct implications for improving environmental sustainability and public health. By focusing on water quality, waste management, and soil improvement, his studies provide valuable insights for policymakers, environmental practitioners, and communities seeking affordable and sustainable solutions. His teaching and mentorship have shaped a new generation of scientists who carry forward his vision of applying chemistry and environmental science to societal challenges. His long-standing role in academia also demonstrates his enduring influence in the advancement of environmental education in Ethiopia.

Legacy and Future Contributions

Dr. Diriba’s legacy lies in his multifaceted contributions as an educator, researcher, and innovator in environmental sciences. His research on plant-based coagulants for water purification reflects a sustainable approach that can inspire future studies in green chemistry and resource management. Looking ahead, his future contributions are likely to continue bridging traditional knowledge and modern scientific inquiry, offering sustainable alternatives to chemical treatments. As he advances in his academic career, his work is expected to further strengthen the scientific community’s ability to address pressing environmental challenges, particularly in the context of water security and waste management in developing regions.

Publications


Article: Comparative analysis of Moringa stenopetala seed powder and aluminum sulfate for turbidity and E. coli removal from surface water: The case of Bake Pond, Borana Zone, Ethiopia
Authors: Dereje Diriba Chemeda; Daniel Fitamo
Journal: Chinese Journal of Analytical Chemistry
Year: 2025


Article: The Effect of Organic Solid Waste Compost on Soil Properties, Growth, and Yield of Swiss Chard Crop (Beta vulgaris L.)
Author: Dereje Chemeda
Journal: The Scientific World Journal
Year: 2023


Article: Status, characterization, and quantification of municipal solid waste as a measure towards effective solid waste management: The case of Dilla Town, Southern Ethiopia
Author: Dereje Chemeda
Journal: Journal of the Air & Waste Management Association
Year: 2021


Article: Removal of Nitrite from Aqueous Solution Using Sugarcane Bagasse and Wheat Straw
Author: Dereje Chemeda
Journal: Bulletin of Environmental Contamination and Toxicology
Year: 2014


Conclusion

The academic and professional journey of Dr. Dereje Diriba reflects a life dedicated to learning, teaching, and solving environmental challenges. His progression from teacher to assistant professor, coupled with his impactful research, highlights his unwavering pursuit of knowledge and service to society. Through his scientific investigations, he has provided sustainable solutions that resonate both locally and globally. His legacy continues to grow through his students, publications, and future research endeavors, establishing him as a respected figure in environmental analytical chemistry and a committed advocate for sustainable development.

Ling Han | Environmental Science | Best Researcher Award

Assoc. Prof. Dr. Ling Han | Environmental Science | Best Researcher Award

Peking University | China

Author Profile

Scopus

🌱 Early Academic Pursuits

Assoc. Prof. Dr. Ling Han began her academic journey with a Bachelor’s degree in Environmental Science from East China Normal University. She then pursued both her Master’s and Ph.D. in Environmental Planning and Management at Peking University. Her early research laid the foundation for her lifelong focus on environmental sustainability, circular economy, and industrial ecology.

🏛️ Professional Endeavors

Dr. Han is an Associate Professor at the College of Environmental Sciences and Engineering, Peking University. She has dedicated her career to advancing urban and industrial sustainable transitions, emphasizing circularity and inclusion. As one of the pioneering scholars in China to study material flow analysis (MFA) and life cycle assessment (LCA), she has influenced national waste management policies and industrial sustainability strategies.

🔬 Contributions and Research Focus

Dr. Han has been at the forefront of research on post-consumer waste management. In 2000, she and her advisor proposed treating the waste recycling industry as the "fourth industry," advocating for a new industrial system aligned with circular economy principles. Over the past five years, she has used coupled MFA-LCA, agent-based modeling (ABM), and optimization methods to analyze material flow evolution in solid waste generation, mobility, and utilization.

Her major research projects include:
📌 National Key R&D Program on solid waste, studying the interaction between environmental resources and solid waste.
📌 Sino-Dutch NSF collaboration on inclusive circular economy, proposing a community-driven post-consumption waste management system.
📌 Research on urban kitchen waste composting, integrating garden waste for carbon sequestration and soil improvement.

🏅 Accolades and Recognition

Dr. Han’s innovative contributions have earned her numerous research grants and prestigious roles in international collaborations. She has played a key role in national sustainability policies, advising on carbon peak strategies and low-carbon certification technologies.

🌍 Impact and Influence

Beyond academia, Dr. Han has significantly influenced sustainable education. In 2018, she launched the "Sustainable Campus Practice" course at Peking University, guiding students to identify and solve real-world sustainability challenges. Her efforts have fostered a new generation of environmentally conscious leaders.

🔮 Legacy and Future Contributions

Dr. Han continues to shape the future of industrial sustainability and circular economy models. She remains committed to advancing research on biomass resource utilization and decision-making support for waste management. Her work will play a crucial role in achieving global sustainability goals and fostering a greener, more inclusive world.

Publications


📄 "Does the Household Clean Energy Transition Benefit the Mental Health of the Elderly in Rural China? Evidence from China Health and Retirement Longitudinal Study"

  • Authors: Hengxing Yin, Ling Han, Li Yan, Chenhao Liu

  • Journal: Environment International

  • Year: 2025


📄 "Assessing the Sustainability Performances of the Supply Chain of Decentralized Urban Food Waste Composting for Urban Green Spaces"

  • Authors: Wenrui Shen, Haoran Qiao, Xin Tong, Yilong Xiao, Ling Han

  • Journal: Resources, Conservation and Recycling Advances

  • Year: 2025