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
- BLUEWATER BIO: Wastewater firm’s global clean sweepon August 16, 2019 at 9:56 am
The company is renowned for its HYBACS odourless, biomass solution. This speeds up the bacterial process breaking down waste material, removing polluting chemicals such as phosphorus and nitrogen, and ...
- Wastewater plant upgrades stress small towns Small populations shoulder high costs of requirementson August 16, 2019 at 6:07 am
Iowa’s 2013 strategy for making these cuts included requiring 102 of Iowa’s largest cities to make changes to their wastewater treatment process to remove nitrate and phosphorus. If all the 102 large ...
- Sinking Wastewater Triggers Deeper, Stronger Earthquakeson August 16, 2019 at 4:09 am
The effects of pumping wastewater from oil and gas extractions ... should be incorporated into the permitting and regulatory process,” Pollyea said. “If more of that data was available ...
- AAC IL CF Inline Filters for Sewage Wastewater Odour Treatmenton August 16, 2019 at 3:48 am
Sewage and Wastewater Treatment, Waste Recycling, Food Processing Plants, Blood Tanks, Museums and Galleries, and Airport Terminal Buildings. Our product range includes: the AAC PR range of Carbon ...
- Boise says no to Ada County landfill wastewateron August 16, 2019 at 3:18 am
BOISE, Idaho — Boise city officials say the Ada County Landfill can't dump water that soaked through the region's trash into the Boise wastewater treatment system ... say it could disrupt the water ...
- Costs jump for fixes to Largo wastewater planton August 15, 2019 at 2:28 pm
“One of the things we’ve heard throughout this process is that, since the recession, construction prices in the country have just skyrocketed,” he said. He said the difference in funds from the $5.25 ...
- Global Industrial Wastewater Treatment Service...on August 15, 2019 at 9:18 am
Recent trends have been to minimize such production or to recycle treated wastewater within the production process. Growing industrialization and urbanization are some of the factors fuelling the ...
- Wastewater Treatment Equipment Market to Jump Nearly 5% Through 2022: Reporton August 13, 2019 at 12:50 pm
Some of the major players in the wastewater treatment equipment market include Suez, 3M, GE Water, Culligan International Company, and DOW Water & Process Solutions.
- Airport director defends decision to dump wastewateron August 12, 2019 at 2:49 pm
"It's a natural, commonly used process," he said ... Brian Walsh that it was contacted by the airport before the wastewater was dumped, but could not say whether it failed to communicate the ...
- Washington’s wine industry adjusts to new wastewater requirementson August 11, 2019 at 9:33 am
He knew other states had implemented permitting programs to monitor wastewater generated during the winemaking process. The wine industry in his home country of Germany and the rest of Europe was ...
via Bing News