Prativa Poudel Defends PhD: Assessing Greenhouse Gas Emissions from Nepal’s Sanitation Systems

28th May 2025, Kathmandu

Ms. Prativa Poudel, a Ph.D. scholar at the Department of Environmental Science and Engineering, has successfully defended her dissertation. Her research is titled “Assessment of Greenhouse Gas Emissions from Onsite Sanitation Systems in Nepal.”

Prativa Poudel Defends PhD

She completed her Ph.D. under the guidance of Prof. Dr. Subodh Sharma. Asst. Prof. Dr. Anish Ghimire and Dr. Manish Baidya co-supervised her work. The defense marked a key milestone in her academic journey in the field of environmental science.

Viva Conducted By Expert Panel

The final defense, known as the Ph.D. Defense Seminar (Viva) was held on May 28, 2025. A panel of senior academics evaluated her presentation. The evaluation committee was chaired by Prof. Dr. Bed Mani Dahal, Dean of the Faculty.

Other members included:

Prof. Dr. Subodh Sharma (Supervisor)

Prof. Dr. Kumud Raj Kafle (Head of Department)

Prof. Dr. Rejina Maskey Byanju (External Examiner)

Asst. Prof. Dr. Nani Raut (Dean’s Nominee)

Assoc. Prof. Dr. Mahesh Prasad Bhattarai (Vice Chancellor’s Nominee)

The committee provided critical feedback. They also offered suggestions for improvement. Ms. Poudel is expected to incorporate these before final approval.

Research Focuses On Sanitation-Linked Emissions

Ms. Poudel’s study addresses a growing concern in Nepal. It evaluates greenhouse gas (GHG) emissions from traditional sanitation systems, including septic tanks and pit latrines. These systems are still used in many parts of the country.

Her research highlights how onsite sanitation can contribute to methane and nitrous oxide emissions. These gases are known to accelerate climate change. By studying their emission rates and influencing factors, she identified potential areas for intervention.

Her findings also emphasize the urgent need for environment-friendly sanitation practices. The study calls for better infrastructure and policy integration.

Significant Data Collection And Field Work

Ms. Poudel gathered primary data through extensive field visits and sampling. She measured GHG levels using scientific instruments and analysis techniques. The study used both quantitative and modeling approaches to ensure accuracy.

She examined several variables, including soil type, moisture, temperature, and organic load. Her findings revealed inconsistencies in emissions across different regions.

This data provides a foundation for future research and policy development. It is one of the few studies in Nepal that deals with emissions from this source.

Contribution To National Environmental Goals

Nepal has committed to reducing its carbon footprint. Ms. Poudel’s research aligns with the country’s climate goals and sanitation targets. It supports evidence-based decision-making for future development projects.

Her dissertation also proposes solutions. These include improved waste treatment methods, better ventilation systems, and proper sludge management. She argues that simple upgrades in design can reduce emissions significantly.

By focusing on local conditions, her recommendations are both practical and adaptable.

Encouragement From The Academic Community

Faculty members praised Ms. Poudel’s dedication. They highlighted the relevance and timeliness of her research. The department considers her work a valuable contribution to environmental science in Nepal.

Speaking at the event, her supervisor, Prof. Dr. Subodh Sharma, appreciated her methodological rigor. He stated that her findings would inform national sanitation policies. Other committee members agreed that the work sets a high standard for future researchers.

The department expressed confidence that Ms. Poudel will contribute to Nepal’s growing body of environmental research.

Final Steps Before Degree Approval

Although the defense was successful, the process is not yet complete. Ms. Poudel will need to revise her dissertation. The committee has provided feedback for final improvements. Once these are submitted, the university will grant her the doctoral degree.

This process ensures academic quality and completeness. It also allows the candidate to address any gaps in the work.

A Role Model For Young Researchers

Ms. Poudel’s journey reflects the growing interest in climate-resilient and sustainable solutions among young Nepali researchers. Her success sends a message to aspiring scholars. It shows that important contributions can be made through focused research and dedication.

She hopes to continue working in the field of climate policy, sanitation, and environmental health. Her goal is to support the development of eco-friendly technologies and practices in Nepal.

Looking Ahead

The department plans to publish her findings in peer-reviewed journals. This will expand their reach and allow policymakers and international researchers to access her work.

Nepal still faces many challenges in sanitation and waste management. However, studies like this bring us closer to sustainable solutions.

As climate change continues to affect vulnerable countries like Nepal, Ms. Poudel’s research offers hope and direction.

For more: Prativa Poudel Defends PhD