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Wastewater treatment in amine-based carbon capture
Cong Dong1, Gordon Huang1, Guanhui Cheng1
1Institute for Energy, Environment and Sustainable Communities, University of Regina, 3737 Wascana Parkway, Regina, Saskatchewan S4S0A2, Canada; Institute for Energy, Environment and Sustainability Research, UR-BNU, 3737 Wascana Parkway, Regina, Saskatchewan S4S0A2, Canada.
Chemosphere
|February 10, 2019
Summary
Amine-based CO2 capture (ACC) wastewater contains harmful degradation products. This review examines treatment methods, guiding selection based on conditions and pollutant types for effective environmental mitigation.
Area of Science:
- Environmental Chemistry
- Chemical Engineering
- Water Treatment Technologies
Background:
- Amine-based CO2 capture (ACC) is crucial for climate change mitigation but generates amine-rich wastewater (ARWW).
- ARWW contains harmful amine-based solvent degradation products, posing risks to ecosystems and human health.
- Existing ARWW treatment methods lack comprehensive review, hindering technological advancement.
Purpose of the Study:
- To comprehensively review and analyze existing technologies for treating ARWW from ACC processes.
- To clarify degradation mechanisms and identify key ARWW compounds.
- To provide guidance for selecting and improving ARWW treatment techniques.
Main Methods:
- Systematic review of available literature on ARWW treatment technologies.
- Examination of technologies applied to wastewater from washwater, condenser, and reclaimer units.
- Analysis of treatment efficacy based on degradation mechanisms and ARWW composition.
Main Results:
- ARWW treatment method selection depends on degradation conditions and pollutant concentrations.
- UV light is suitable only for washwater and condenser unit wastewater.
- Biological activated carbon effectively removes nitrosamines; sequence batch reactors and microbial fuel cells are applicable for amine removal.
Conclusions:
- This review offers scientific support for selecting and optimizing ARWW treatment strategies.
- Effective ARWW treatment is essential for mitigating the environmental and health impacts of ACC.
- Advancing ACC technologies requires robust wastewater management solutions.
Keywords:
Amine-based carbon captureAmine-rich wastewaterCarbon capture and storageReviewTreatment techniquesMore Related Videos
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