Civil Engineering

Shiv Nadar University is a comprehensive, multidisciplinary, research-focused, and student-centric University offering a full range of academic programs at the undergraduate, postgraduate and doctoral level. With state-of-the-art infrastructure, the University comprises of academic wings, sophisticated labs, international standard sports facilities, amphitheaters, auditorium, conference rooms and smart classrooms. The University&rsquo;s goal is to become internationally recognized for the quality of its research and creative endeavors and their applicability to improving quality of life, generating new insights and expanding the boundaries of human knowledge creativity. Committed to excellence in teaching, research and service, the University aims to serve the higher education needs of India and the world beyond.

Shiv Nadar University

Landfill leachate comprises highly toxic and hazardous compounds posing adverse health effects to the ecosystem and human populations. These leachates must be subjected to suitable treatment before discharging to the environment. However, the higher operational cost and presence of recalcitrant matter in the leachate make the conventional physico-chemical processes incompetent for treatment. Recent advancements in biological processes over physico-chemical processes result in the development of aerobic granular reactor (AGR) for treating landfill leachate. Small footprint, less energy demand, high <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/microbial-activity">microbial activity</a>, long-term operational stability with better removal of organic pollutants, and resistance to high <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/shock-loads">shock load</a> make AGR a promising technique for treating leachate. Longer granulation time and instability of aerobic granules are some of the major shortcomings that limit its commercial application. Additionally, the single-stage treatment of landfill leachate using AGR poses several difficulties, such as low organic and recalcitrant <a href="https://www.sciencedirect.com/topics/earth-and-planetary-sciences/pollutant-removal">pollutant removal</a> efficiency, which needs post-treatment. Hence, an integrative approach is imperative for treating landfill leachate with a high organic load to meet the effluent standard. The present study highlights an in-depth critical review of various biological processes, recent developments in AGR, and the factors affecting its performance, mass balance, and the kinetics involved during landfill leachate treatment. Subsequently, the integrated process for the treatment of landfill leachate has been summarized along with the future prospects of AGR.

(SoE) School of Engineering

Environmental Nanotechnology, Monitoring & Management

<a href="https://www.sciencedirect.com/science/article/pii/S2215153222000496">Recent developments in landfill leachate treatment: Aerobic granular reactor and its future prospects</a>