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Mineral CO2 sequestration by environmental biotechnological processes

Paper ID Volume ID Publish Year Pages File Format Full-Text
37121 45313 2013 8 PDF Available
Title
Mineral CO2 sequestration by environmental biotechnological processes
Abstract

CO2 sequestration may be an avenue to mitigate climate change. CO2 sequestration by mineral carbonation can be achieved by the reaction of CO2 with alkaline silicates. Here, we evaluate how alkaline silicate mineral-based CO2 sequestration can be achieved using environmental biotechnological processes. Several biotechnological processes rely on the sequence of (i) an acid-producing reaction such as nitrification and anaerobic fermentation and (ii) an alkalinity-producing reaction such as denitrification and methanogenesis. Whereas the acid-producing reaction can be used to enhance the dissolution of, for example, alkaline calcium silicates, the subsequent alkalinity-producing step can precipitate CaCO3. We quantitatively evaluate the potential of these processes for CO2 sequestration and propose that optimization of these processes could contribute to climate change mitigation strategies.

► Two-stage biotechnological processes show potential for mineral CO2 sequestration ► Use of biological processes can significantly reduce CO2 sequestration costs ► Anaerobic digestion and fuel cells show high potential for CO2 sequestration ► CO2 mineral carbonation in anaerobic digestion process improves biogas quality.

Keywords
biological wastewater treatment; mineral CO2 sequestration; silicate minerals; biogas improvement; anaerobic digestion; biotechnological processes
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Publisher
Database: Elsevier - ScienceDirect
Journal: - Volume 31, Issue 3, March 2013, Pages 139–146
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us