Wastewater technologies are not yet as “green” as they should be

Each drop of safe and clean drinking water throughout the world is becoming more valuable than before. Meanwhile, dirty water is a potential threat to public health. Agriculture, which represents most water removes worldwide, plays an important role in water pollution. To avoid this and increase clean water available, wastewater technologies have a crucial function.

To this note, the researchers Professor Shu-Yuan Pan and Yu-i Lin at the National University of Taiwan and Nidhi Mehta at the University of Washington described and analyzed the performance of several circular technologies for the conversion of agricultural wastewater to value resources to value resources Added and published the review article in the magazine reviewed by pairs, Environments last March. This work was supported by the Ministry of Science and Technology, Taiwan (ROC).

Dr. Pan and colleagues The review began by summarizing the characteristics of possible agricultural agricultural wastewater products. “Organic (humic) substances and nutrients are the main compositions of agricultural wastewater and need to recover, since they improve the growth of a plant and its roots,” said the author of the author Dr. Pan. Nutrients, such as nitrogen And phosphorus are higher level examples that are necessary to be recovered or eliminated from wastewater. “Simply knowing the fact that 5–7% of global energy production is consumed for rock mining that contain phosphorus, we can understand how important it is,” added Dr. Pan. For this purpose, the team summed up The methods of recovery of humic substances and nutrients from agricultural wastewater. Although adsorption techniques are the most efficient on chemical and physical processes, using a single method that recovers organic substances can be difficult due to the great variety of their properties.

Later, scientists discussed the advances in the implementation of circular bioeconomy concepts for the conversion of agricultural wastewater to added value products. According to the team, recovering the resources of agriculture, wastewater reduces environmental impacts and offers the opportunity to achieve a sustainable/efficient world in resources. Dr. Pan said: “Today, the shortage of water, energy and resources are world crises due to pollution, extreme weather and population increase.” To this end, recovering these resources can contribute to addressing these existing and potential problems of humanity. Dr. Pan and his colleagues highlighted the importance of optimizing the environmental benefits of circular technologies appropriate for agricultural wastewater in the study.

Finally, the team demonstrated the perspectives and perspectives for circular agricultural wastewater technologies with respect to a concept of a circular bioeconomic system. The energy efficiency design for energy -based technology should be a priority for future research. “On the way, the principles of green chemistry must be incorporated with the design of circular technologies of energy efficiency,” said Dr. Pan. Although circular bioeconomics systems offer considerable environmental benefits, the ecological consequences of the recovery process itself also They must be taken into account and analyzed.

Due to the growing world population, improved living standards, variation in consumption patterns and agricultural irrigation standards, scarcity and clean water demand will continue to increase. The findings of this critical study will guide future studies on circular bioeconomy technologies.

Newspaper reference:

Mehta, N.; Shah, kj; Lin, Y.-I; Sol, Y.; PAN, S.-Y. Advances in circular bioeconomy technologies: from agricultural wastewater to value -added resources. Environments 2021, 8, 20. https://doi.org/10.3390/environments8030020

About the author

Assistant Professor

Shu-Yuan Pan, Ph.D.

Dr. Shu -Yuan Pan (Taiwan) - Green TalentsShu-Yuan Pan is an assistant professor at the Department of Bio-environmental Systems Engineering of the National University of Taiwan (NTU). His research work focuses on developing advanced energy efficiency technologies to recover value added resources. It has extensive experience in waste technologies and resources for energy for the production and responsible consumption, including the large-scale demonstration of carbon use technologies in China Steel Corp. since 2011. Shu-Yuan leads the technology laboratory Green in NTU, with the aim of dedicating the great (green research for environmental and agricultural technologies) to achieve a circular bioeconomy system. Due to his excellent performance, he received several international awards, such as “Green Talent that follows” by Germany; and was included in the list of “2% scientists in the world 2020” in the field of energy and environmental science. He has published more than 80 LME documents with total quotes of> 3300 and the H of 29. Had eight patents in the field of circular technologies. He was a postdoctoral researcher in the National Laboratory of Lawrence Berkeley, United States, in 2018-2019; A visiting scholar in the National Laboratory of Argonne, USA in 2015-2016; A visiting academic at the University of RWTH AACHEN, Germany, in 2014. He obtained a Ph.D. and a master’s degree in NTU Environmental Engineering and a degree in Geography of NTU.

Website link: https://webpaGeprodvm.ntu.edu.tw/gtlab/

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