Handling of Amine-Based Wastewater Produced During Carbon Capture

Abstract

The large-scale implementation of amine-based carbon capture processes requires the development of sustainable handling technology of the waste effluents. The generated wastewater contains significant amounts of ammonia and toxic degradation products, nitroamines and nitrosamines. They both pose great threats to the ecological environment and human health. Monoethanolamine (MEA) is one of the most commonly used absorption solvents in the post-combustion carbon capture process. In order to make a better management strategy, the waste components and the pathways of MEA degradation are demonstrated based on different reference papers and case studies. Moreover, the toxicity and environmental impact of the degradation products are evaluated. The goal of this review is to elucidate potential technologies that can either eliminate the hazardous nature of the amine waste or convert it into marketable products. We categorize these technologies as waste disposal, recycle, reuse, and chemical/biological treatment method. Several applications with a focus on biodegradation technique are examined according to their amine removal performance. The results reveal that bioconversion is a promising technique for handling amine-based wastewater at large-scale.

A Distributed Biogas Production Model and Its Use in the Livestock Sector. Case Study: Castile and León

“…In the agro-industrial sector, the implementation of the anaerobic digestion technology must entail an economic profit compared to the traditional management of transport and manure application to available soils with an adequate amount of nutrients [33]. Improving the performance of low temperature anaerobic digestion is achieved by preheating the substrate, co-digestion with various local amendments, and advanced reactor design [34]; there are also other studies of carbon capture based on amines [35].…”