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Vicky Shettigondahalli Ekanthalu is currently working as a scientific research assistant and pursuing his Ph.D. at the Department of Environment and Resource Management, Universität Rostock, Germany. Vicky’s research is particularly focused on the field of Environmental Engineering. Specific research interests include; Waste Biomass up-gradation, Hydrothermal Carbonization, Sewage Sludge Management, Nutrients Recovery, Solid Waste Management, and Waste to Energy.
Marine plastic pollution has increased significantly over the last few decades and is creating a substantial amount of ecological, social, and economic impacts. Plastic pollution is globally widespread, and researchers estimate 5–13 million tons of plastic enters the oceans each year. India, with a fairly low per capita plastic use and high population of 1.36 billion, produces about 5.5 × 105 tons of mismanaged plastic that has a high possibility to enter the ocean every year. India, with greater dependence on the informal waste management sector and with the reputation of having top polluted rivers, faces a huge challenge to tackling marine plastic pollution. Plastic in the marine environment has a high tendency to get strangulated and ingested by aquatic biota leading to physical and toxicological impacts on the marine ecosystem and consequently affecting humans as the final consumer. The main objective of this research is to depict the status and measures to be taken to tackle marine plastic pollution in India. In this concern, a GIS map has been created to depict the plastic input from different river basins of India. Further, the guiding model has been developed, which aids in demonstrating the strategical and technological solution by addressing the challenges of marine litter in India. The predictive model suggested that India is producing about 536 thousand tons of municipal waste per day. With a 50% increase in the current efforts of various waste management pathways, there is a possibility to manage additionally around 25% of the overall generated waste, consequently decreasing waste flow into our ocean. Current research also demonstrates the importance of collaborating international, national, and regional marine debris networks with civil society, public and private partners, and their effect on reducing the waste flow into our ocean.
Satyanarayana Narra; Vicky Shettigondahalli Ekanthalu; Edward Antwi; Michael Nelles. Effects of Marine Littering and Sustainable Measures to Reduce Marine Pollution in India. Handbook of Solid Waste Management 2021, 1 -32.
AMA StyleSatyanarayana Narra, Vicky Shettigondahalli Ekanthalu, Edward Antwi, Michael Nelles. Effects of Marine Littering and Sustainable Measures to Reduce Marine Pollution in India. Handbook of Solid Waste Management. 2021; ():1-32.
Chicago/Turabian StyleSatyanarayana Narra; Vicky Shettigondahalli Ekanthalu; Edward Antwi; Michael Nelles. 2021. "Effects of Marine Littering and Sustainable Measures to Reduce Marine Pollution in India." Handbook of Solid Waste Management , no. : 1-32.
The high moisture content present in sewage sludge hinders the use of sewage sludge in incineration or energy application. This limitation of moisture present in sewage sludge can be obviated by using the hydrothermal carbonization (HTC) process. In sewage sludge management, the HTC process requires less energy compared to other conventional thermo–chemical management processes. The HTC process produces energy-rich hydrochar products and simultaneously enables phosphorus recovery. This study investigates the influence of organic acids, inorganic acid, and alkali as additives on phosphorus transformation, yield, proximate analysis and the heating value of subsequently produced hydrochar. The analysis includes various process temperatures (200 °C, 220 °C, and 240 °C) in the presence of deionized water, acids (0.1 M and 0.25 M; H2SO4, HCOOH, CH3COOH), and alkali (0.1 M and 0.25 M; NaOH) solutions as feed water. The results show that phosphorus leaching into the process-water, hydrochar yield, proximate analysis, and the heating value of produced hydrochar is pH- and temperature-dependent, and particularly significant in the presence of H2SO4. In contrast, utilization of H2SO4 and NaOH as an additive has a negative influence on the heating value of produced hydrochar.
Vicky Shettigondahalli Ekanthalu; Satyanarayana Narra; Jan Sprafke; Michael Nelles. Influence of Acids and Alkali as Additives on Hydrothermally Treating Sewage Sludge: Effect on Phosphorus Recovery, Yield, and Energy Value of Hydrochar. Processes 2021, 9, 618 .
AMA StyleVicky Shettigondahalli Ekanthalu, Satyanarayana Narra, Jan Sprafke, Michael Nelles. Influence of Acids and Alkali as Additives on Hydrothermally Treating Sewage Sludge: Effect on Phosphorus Recovery, Yield, and Energy Value of Hydrochar. Processes. 2021; 9 (4):618.
Chicago/Turabian StyleVicky Shettigondahalli Ekanthalu; Satyanarayana Narra; Jan Sprafke; Michael Nelles. 2021. "Influence of Acids and Alkali as Additives on Hydrothermally Treating Sewage Sludge: Effect on Phosphorus Recovery, Yield, and Energy Value of Hydrochar." Processes 9, no. 4: 618.
A persistent topic of the anaerobic digestion of biowaste is the efficient use of co-substrates. According to Renewable Energy Sources Act the co-substrate input is limited to 10 percent of the average daily substrate feed in Germany. In this concern, the primary focus of this paper is to understand the suitability of crude glycerol in anaerobic digestion of biowaste. Two identical lab-scale anaerobic digester units were added with crude glycerol, and each unit was equipped with four identical fermenters. Unit A was fed with an average organic loading rate of 4.5 kg VS m−3 d−1, and the average organic loading rate of unit B was set at 5.5 kg VS m−3 d−1. The share of crude glycerol in the total feed was 0.77 percent of the fresh matter. The abort criterion is a ratio of the volatile organic acids and buffer capacity (FOS/TAC) in the fermenter above 1.2. The abort criterion was reached after 16 days. In summary, the results lead us to the conclusion crude glycerol is not suitable as a co-substrate for anaerobic digestion for several reasons.
Jan Sprafke; Vicky Shettigondahalli Ekanthalu; Michael Nelles. Continuous Anaerobic Co-Digestion of Biowaste with Crude Glycerol under Mesophilic Conditions. Sustainability 2020, 12, 9512 .
AMA StyleJan Sprafke, Vicky Shettigondahalli Ekanthalu, Michael Nelles. Continuous Anaerobic Co-Digestion of Biowaste with Crude Glycerol under Mesophilic Conditions. Sustainability. 2020; 12 (22):9512.
Chicago/Turabian StyleJan Sprafke; Vicky Shettigondahalli Ekanthalu; Michael Nelles. 2020. "Continuous Anaerobic Co-Digestion of Biowaste with Crude Glycerol under Mesophilic Conditions." Sustainability 12, no. 22: 9512.
Hydrothermal carbonization (HTC) is emerging as a most promising technology to effectively manage the extensively produced sewage sludge by converting it into high energy density bio-coal and bio-products. The main objective of the current review is to briefly compare the existing sewage sludge management solutions with the HTC process. Also, this review clearly explains the effectiveness of HTC in terms of environmental sustainability, considering the existing legislation (European and national level (Germany)). Further, an attempt is made to explain the eco-innovative strategies of HTC to fulfill the principle concept of the circular economy “from waste to resource” as the most suitable waste management approach. The importance of sewage sludge as a valuable resource of matter and energy has been highly appreciated. Besides updating the knowledge on the effectiveness of HTC as a technology to manage sewage sludge, this review briefly summarizes economically the feasibility and specifies some of the most appropriate future research prospects for the technical development of HTC in sewage sludge management.
Vicky Shettigondahalli Ekanthalu; Gert Morscheck; Satyanarayana Narra; Michael Nelles. Hydrothermal Carbonization—A Sustainable Approach to Deal with the Challenges in Sewage Sludge Management. Urban Mining and Sustainable Waste Management 2020, 293 -302.
AMA StyleVicky Shettigondahalli Ekanthalu, Gert Morscheck, Satyanarayana Narra, Michael Nelles. Hydrothermal Carbonization—A Sustainable Approach to Deal with the Challenges in Sewage Sludge Management. Urban Mining and Sustainable Waste Management. 2020; ():293-302.
Chicago/Turabian StyleVicky Shettigondahalli Ekanthalu; Gert Morscheck; Satyanarayana Narra; Michael Nelles. 2020. "Hydrothermal Carbonization—A Sustainable Approach to Deal with the Challenges in Sewage Sludge Management." Urban Mining and Sustainable Waste Management , no. : 293-302.