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
- Global Wastewater Treatment Services Market to Reach $73.4 Billion by 2027on April 12, 2021 at 6:07 am
Abstract: - Global Wastewater Treatment Services Market to Reach $73. 4 Billion by 2027. - Amid the COVID-19 crisis, the global market for Wastewater Treatment Services estimated at US$49.New York, ...
- Japan to finalize decision to dump Fukushima wastewater into sea "within days": PMon April 12, 2021 at 5:00 am
TOKYO, April 12 (Xinhua) -- Japanese Prime Minister Yoshihide Suga said on Monday that his government cannot put off the decision to dispose of radioactive wastewater from the ... treated using an ...
- Major Milestone Reached for Sewage and Food Waste Biocrude Conversion Processon April 12, 2021 at 4:04 am
Hour Catalyst Stability Test A large-scale demonstration converting biocrude to renewable diesel fuel has passed a significant test, operating for more than 2,000 hours continuously without losing ...
- Japan determined to release Fukushima wastewater despite backlashon April 12, 2021 at 3:42 am
Japanese Prime Minister Yoshihide Suga said on Monday that the disposal of radioactive water from the crippled Fukushima nuclear power plant cannot be postponed amid plans to rebuild the plant, ...
- I-Phyc's Sustainable Water Recycling Process using Algaeon April 12, 2021 at 2:57 am
Second, it captures carbon dioxide and produces sustainable products from wastewater. The innovative process cleans up water supplies while simultaneously producing valuable products in a future-proof ...
- The plan to release Fukushima wastewater sparks backlash The plan to release Fukushima wastewater sparks backlashon April 11, 2021 at 11:52 pm
The Japanese government has repeatedly tried to announce the disposal of the contaminated water but has been deterred by opposition from its own people and the international community.
- Nearly "catastrophic" Piney Point wastewater leak could irreparably harm neighboring marine life, experts sayon April 11, 2021 at 4:10 am
The millions of gallons of water pumped into Tampa Bay could further devastate an already struggling manatee population — and when hurricane season hits, things may only get worse.
- Nearly "catastrophic" wastewater leak could devastate marine lifeon April 10, 2021 at 3:06 pm
The nutrients most of concern when it comes to the wastewater — which is a combination of saltwater from a local dredge project, process water and stormwater — are nitrogen and phosphorus. While both ...
- Wastewater is the infrastructure crisis ‘people don’t want to talk about’on April 9, 2021 at 3:42 pm
MacArthur Fellow Catherine Coleman Flowers spoke to the PBS NewsHour about her vision for a future that centers and solves water infrastructure issues across communities.
- Toxic wastewater reservoir on verge of collapse in Florida could cause "catastrophic event"on April 6, 2021 at 5:48 pm
It is a wastewater compound. ... a majority of what we're dealing ... Phosphogypsum is the "radioactive waste" left over from processing phosphate ore into a state that can be used for fertilizer, ...
via Bing News