How the sunlight-controlled CO2 separation installation works.
CREDIT: Shiming Zhang, Renmin University of China.
According to the World Meteorological Organization, greenhouse gas concentrations have reached a record high.
In the case of carbon dioxide (CO2), the growth in 2020 exceeded the average for the last decade; despite a 5.6% drop in fossil fuel CO2 emissions driven by COVID-19 restrictions. This continued rise in CO2 concentration is directly linked to our massive consumption of fossil fuels.
In a study published in the KeAi journal Green Energy & Environment, a group of researchers from Renmin University of China propose a new method to capture CO2 using sunlight as the energy source and modified sawdust as the CO2 absorbent. In addition to capturing CO2, their method also avoids using the fossil fuels that would create additional CO2. Importantly, the absorption method they have developed is reversible, so the captured CO2 can be used to generate other products, such as methanol, ethanol and methane.
Corresponding author Yapei Wang, a professor in the university’s Department of Chemistry, explains: “While a large number of high-performing CO2 absorbents have been developed in recent decades, people rarely pay attention to the carbon emitted by the adsorbent during its preparation. Moreover, typical industrial CO2 capture systems show high-energy consumption during the absorber regeneration process.
“To solve these issues, we focused on a solution that not only fabricates low-energy consumption CO2 absorbents, it also uses sunlight as the single energy input to regenerate those absorbents.”
The research team found that sawdust impregnated with an aqueous solution of amine-based polymer was an easy-to-obtain CO2 absorbent with two important advantages: it doesn’t require complicated synthesis, and it can capture CO2 and be regenerated by proper heating. In addition, a reflector and sunlight absorption layer was used to fabricate the sunlight harvesting systems, heating up the modified sawdust for CO2 capture.
According to Shiming Zhang, a PhD student who took part in the study, “we were inspired by solar water heaters. Using sunlight as an energy input minimises the need for traditional energy and is more environmentally-friendly.” Postgraduate Qianhao Pan, who also participated in the research, adds: “We believe less is more, sometimes a simple preparation process can lead to an effective solution that protects the environment.”
More from: Renmin University of China
The Latest Updates from Bing News & Google News
Go deeper with Bing News on:
- Carbon removal technologies to get $3.5 billion federal investment
The federal government is investing in machines that suck giant amounts of carbon dioxide out of the air in the hopes of reducing damage from climate change.
- Biden administration lays out plan for four carbon-capture facilities
The infrastructure law set aside $3.5 billion for direct air capture, and the DOE plans to use that to fund four facilities spread across the US. Direct air capture has suffered from a bit of a ...
- Minnesota PUC says it can write rules for carbon capture pipelines
A Minnesota agency has asserted its authority over carbon capture pipelines that could be a boon to the ethanol industry but have proven unpopular with some landowners and environmental groups.
- Minnesota agency asserts authority over carbon capture pipelines
The decision means carbon pipeline companies must file for a siting permit with the Minnesota Public Utilities Commission. Without statewide authority, permitting would have been left up to individual ...
- US Begins $3.5 Billion Carbon Capture Project, How Well Will It Work?
The U.S. Department of Energy plans to spend $3.5 billion on carbon capture hubs across the country, but the costs and practicality associated with CO2 capture technology may hamper progress.
Go deeper with Google Headlines on:
Go deeper with Bing News on:
- Why is Colloidal Silica Liquid Required in the Pharmaceutical Industry?
In the process of tablet making, colloidal silica liquid is increasingly used as an absorbent ... R. Grace & Co., Ecolab Inc., Merck Global, and The Dow Chemical Company have invested ...
- MC Drives: Tata Nexon EV Max
The Tata Nexon has gone from being an unassuming addition to the mid-size crossover SUV club to a genuine force to be reckoned with. And the reason behind it is the Tata Nexon EV. As the country’s ...
- Evolution of SARS-CoV-2 variants of concern
In a recent study posted to the bioRxiv* preprint server, researchers investigated the evolution of different severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern (VOCs). .
- Super Absorbent Polymer (SAP) Market Growth 2022 Global Industry Size, Recent Trends, Demand and Share Estimation by 2030 with Top Players
May 16, 2022 (The Expresswire) -- Global “Super Absorbent Polymer (SAP) Market“ (2022-2030) report covers a brief overview of the segments and sub-segmentations including the product types ...
- Colossal 115-ft party sub offers an underwater venue for 120 guests
If you've ever gone out on a booze cruise and thought "gee, I wish there was less access to fresh air," this one's for you! Dutch submarine company U-Boat Worx has announced an enormous new underwater ...