Innovative Green Technologies for Wastewater Treatment and Sludge Valorization Towards a Circular Economy
A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".
Deadline for manuscript submissions: 30 November 2025 | Viewed by 62
Special Issue Editors
Interests: green hydrogen production; solid waste recycling and upcycling; sustainable wastewater treatment; green chemistry; circular economy; biotechnology for re-source recovery; electrochemical technologies; life-cycle assessment; environmental sustainability; sludge valorization
Special Issue Information
Dear Colleagues,
The treatment and disposal of wastewater and sludge remain critical challenges in the face of rapid urbanization, industrialization, and climate change. Conventional technologies often incur high energy consumption, limited resource recovery, and significant environmental impacts. As the global community increasingly moves toward carbon neutrality and circular economy models, there is an urgent need for green, sustainable, and low-carbon solutions that transform wastewater and sludge from environmental burdens into valuable resources.
Emerging technologies—such as electrochemical treatment, solar-driven electroreforming, advanced biological resource recovery, and green chemical upcycling—offer promising pathways for energy generation, nutrient recovery, and pollutant removal while minimizing ecological footprints. Integrating life-cycle assessment and techno-economic analysis further helps to ensure these innovations are both environmentally and economically viable.
This Special Issue aims to highlight cutting-edge research and practical advances in green technologies for wastewater and sludge management. Topics include, but are not limited to, green hydrogen production from wastewater, sludge valorization into value-added products, sustainable electrochemical and biological treatment processes, and circular economy-based water management strategies. We invite original research articles, reviews, and case studies from multidisciplinary fields that contribute to a greener, more sustainable future.
Dr. Hu Zhao
Dr. Yun Chen
Guest Editors
Manuscript Submission Information
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Keywords
- sustainable wastewater treatment
- sewage sludge valorization
- resource recovery
- circular economy
- green chemistry
- nutrients circulation
- advanced pretreatment technology
- low-carbon technologies
- life-cycle assessment
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