Loading...
Please wait, while we are loading the content...
Similar Documents
Biological treatment of effluents generated by amine based CO 2-capture plants 生物处理由胺二氧化碳捕获设备所产生的污水
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hauser, Ingrid Einbu, Aslak Svendsen, Hallvard F. Østgaard, Kjetill |
| Copyright Year | 2016 |
| Abstract | Carbon capture and storage (CCS) is a currently developed technology to fight climate change by reducing greenhouse gas emissions from large point sources. There are various capturing principles, whereas to date most of the pilot plants are based on amine absorption. One commonly used primary amine is monoethanolamine (MEA). During the process of carbon capture, the solvent is subject to various degradation mechanisms due to oxidation, thermal strain, and unwanted side reactions within the system. After reclaiming the usable solvent for recycling, these degradation products accumulate as waste and need to be treated accordingly. Depending on the solvent, different degradation products may be found in this so called reclaimer waste, with ammonia as a dominant end product. Volatile products may also be emitted through the exhaust gas. Estimates from a full-scale amine-based capture plant predicts approximately 0.2 ppm amine and 20 ppm ammonia in the emissions. For a full-scale capture plant removing 1 million tons CO2 annually, these concentrations implicate emissions of significant environmental impact. Effluents from those various sources within the capture plant can be treated biologically to obtain nitrogen removal as well as general detoxification. Our studies have shown that MEA, as well as MEA-based reclaimer waste, can be treated with biological nitrogen removal, which is a well-established method within the field of wastewater treatment. Most important, by applying a recycled pre-denitrification reactor configuration, we have shown that the amine and its organic degradation products will serve efficiently as the carbon source needed for the denitrification step. Future development has to take these findings into consideration. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.nscj.co.uk/JECM/PDF/1-4-1-Hauser.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
