Developed eco-friendly, low-cost, and high-efficiency wastewater processing catalyst made from agricultural byproduct
Developed eco-friendly, low-cost, and high-efficiency wastewater processing catalyst made from agricultural byproduct, and high efficiency and removal rate achieved through application of ultrasound stimulation, leading to high expectation for the development of an environmental hormone removal system
The research team of Dr. Jae-woo Choi and Dr. Kyung-won Jung of the Korea Institute of Science and Technology’s (KIST, president: Byung-gwon Lee) Water Cycle Research Center announced that it has developed a wastewater treatment process that uses a common agricultural byproduct to effectively remove pollutants and environmental hormones, which are known to be endocrine disruptors.
The sewage and wastewater that are inevitably produced at any industrial worksite often contain large quantities of pollutants and environmental hormones (endocrine disruptors). Because environmental hormones do not break down easily, they can have a significant negative effect on not only the environment but also the human body. To prevent this, a means of removing environmental hormones is required.
The performance of the catalyst that is currently being used to process sewage and wastewater drops significantly with time. Because high efficiency is difficult to achieve given the conditions, the biggest disadvantage of the existing process is the high cost involved. Furthermore, the research done thus far has mostly focused on the development of single-substance catalysts and the enhancement of their performance. Little research has been done on the development of eco-friendly nanocomposite catalysts that are capable of removing environmental hormones from sewage and wastewater.
The KIST research team, led by Dr. Jae-woo Choi and Dr. Kyung-won Jung, utilized biochar,** which is eco-friendly and made from agricultural byproducts, to develop a wastewater treatment process that effectively removes pollutants and environmental hormones. The team used rice hulls, which are discarded during rice harvesting, to create a biochar that is both eco-friendly and economical. The surface of the biochar was coated with nano-sized manganese dioxide to create a nanocomposite. The high efficiency and low cost of the biochar-nanocomposite catalyst is based on the combination of the advantages of the biochar and manganese dioxide.
**Biochar: a term that collectively refers to substances that can be created through the thermal decomposition of diverse types of biomass or wood under oxygen-limited conditions
The KIST team used the hydrothermal method, which is a type of mineral synthesis that uses high heat and pressure, when synthesizing the nanocomposite in order to create a catalyst that is highly active, easily replicable, and stable. It was confirmed that giving the catalyst a three-dimensional stratified structure resulted in the high effectiveness of the advanced oxidation process (AOP), due to the large surface area created.
When used under the same conditions in which the existing catalyst can remove only 80 percent of Bisphenol A (BPA), an environmental hormone, the catalyst developed by the KIST team removed over 95 percent in less than one hour. In particular, when combined with ultrasound (20kHz), it was confirmed that all traces of BPA were completely removed in less than 20 minutes. Even after many repeated tests, the BPA removal rate remained consistently at around 93 percent.
Dr. Kyung-won Jung of KIST’s Water Cycle Research Center said, “The catalyst developed through this study makes use of a common agricultural byproduct. Therefore, we expect that additional research on alternative substances will lead to the development of catalysts derived from various types of organic waste biomass.” Dr. Jae-woo Choi, also of KIST’s Water Cycle Research Center, said, “We have high hopes that future studies aimed at achieving process optimization and increasing removal rates will allow for the development an environmental hormone removal system that is both eco-friendly and low-cost.”
The Latest on: Wastewater processing
via Google News
The Latest on: Wastewater processing
- For Injection-induced Earthquakes, Physical Properties of Wastewater Make a Differenceon August 10, 2020 at 12:57 am
Researchers have developed a new theory to explain how and why injection-induced earthquakes continue to occur even when injection rates decline.
- An early indicator of where the coronavirus will strike next? In Hampton Roads, it could be your wastewater.on August 9, 2020 at 10:22 am
Since the beginning of the pandemic, scientists at the Hampton Roads Sanitation District have been tracking the coronavirus through millions of gallons of wastewater coming through the pipes around ...
- San Diego Opens Bids for Wastewater Recycling Project: 1,000 Green Jobson August 7, 2020 at 2:43 pm
San Diego Mayor Kevin L. Faulconer Friday announced the city is seeking construction bids for the North City Pure Water Facility as the first of several bids for the Pure Water Program.
- DNR Publishes Intent To Reissue Wastewater Discharge Permit For JCI/TYCO Facility In Marinetteon August 7, 2020 at 9:41 am
The draft permit proposes substantial reductions in arsenic loading to the Menominee River and first-time imposition of PFAS limitations.
- Fukushima’s Contaminated Wastewater Could Be Too Risky to Dump in the Oceanon August 6, 2020 at 2:40 pm
Almost a decade ago, the Tohoku-oki earthquake and tsunami triggered an explosion at Japan’s Fukushima Daiichi Nuclear Power Plant, causing the most severe nuclear accident since Chernobyl and ...
- Researchers: What's in oilfield wastewater matters for injection-induced earthquakeson August 6, 2020 at 8:31 am
Specifically, he pointed out that oilfield brine has much different properties, like density and viscosity, than pure water, and these differences affect the processes that cause fluid pressure to ...
- What's in oilfield wastewater matters for injection-induced earthquakeson August 6, 2020 at 5:23 am
A team of geoscience researchers in the Virginia Tech College of Science has developed a new theory to explain how and why injection-induced earthquakes continue to occur even when injection rates ...
- Arctic wastewater dump near Russia's Norilsk was toxic, says Greenpeaceon August 5, 2020 at 12:08 pm
Water samples taken by Greenpeace in Russia's Arctic at the site of a wastewater dump by mining giant Norilsk Nickel contained 50 times the permitted level of toxic substances, the environmental ...
- Water and Wastewater Treatment Market: Rising Impressive Business Opportunities Analysis Forecast By 2027on August 5, 2020 at 3:53 am
The MarketWatch News Department was not involved in the creation of this content. Aug 05, 2020 (AmericaNewsHour) -- The water and wastewater treatment market has been segmented by application type ...
- Wastewater Treatment Plants Market Predicted to Witness Sustainable Evolution in Years to Come | Veolia, SUEZ, Xylem, Ecolab, Evoqua Wateron August 1, 2020 at 8:09 am
Latest released the research study on Global Wastewater Treatment Plants Market, offers a detailed overview of the factors influencing the global business scope. Wastewater Treatment Plants Market ...
via Bing News