Lignin-Based Platform as a Potential Low-Cost Sorbent for the Direct Air Capture of CO2

IF 6.7 Q1 ENGINEERING, ENVIRONMENTAL
Jake Carrier, Cheng-Yu Lai* and Daniela Radu, 
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Abstract

The urgent need to address the current climate crisis has led to concerted efforts to develop low-cost and sustainable methods to remove carbon dioxide from the atmosphere. Carbon capture and storage (CCS) and negative emissions technologies (NET’s) offer the most promising paths forward to offsetting global emissions. In this study, we explore the potential of kraft lignin, a readily available biomaterial, as a low-cost alternative for the development of a CO2 sorbent. The approach leverages the known ability of amines to reacting with carbon dioxide and forming a stable compound. Commercially available kraft lignin was modified with diethylenetriamine (DETA), triethylenetetramine (TETA), and tetraethylenepentamine (TEPA) using a one-pot synthesis approach via the Mannich reaction. The sorbent was evaluated for porosity, accessible amine density, and nitrogen content. The CO2 capture experiments revealed that the resulting sorbent can capture 0.80 (±0.03) mmol of CO2 per gram of sorbent.

Abstract Image

Abstract Image

木质素平台作为直接空气捕获二氧化碳的潜在低成本吸附剂
解决目前气候危机的迫切需要促使人们共同努力,开发低成本、可持续的方法来清除大气中的二氧化碳。碳捕集与封存(CCS)和负排放技术(NET)为抵消全球排放提供了最有前途的途径。在本研究中,我们探索了牛皮纸木质素(一种现成的生物材料)作为二氧化碳吸附剂开发的低成本替代品的潜力。这种方法利用了胺与二氧化碳反应并形成稳定化合物的已知能力。利用曼尼希反应的单锅合成方法,用二乙烯三胺 (DETA)、三乙烯四胺 (TETA) 和四乙烯五胺 (TEPA) 对市售牛皮纸木质素进行改性。对吸附剂的孔隙率、可触及胺密度和氮含量进行了评估。二氧化碳捕获实验表明,所制得的吸附剂每克可捕获 0.80 (±0.03) 毫摩尔的二氧化碳。
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来源期刊
ACS Environmental Au
ACS Environmental Au 环境科学-
CiteScore
7.10
自引率
0.00%
发文量
0
期刊介绍: ACS Environmental Au is an open access journal which publishes experimental research and theoretical results in all aspects of environmental science and technology both pure and applied. Short letters comprehensive articles reviews and perspectives are welcome in the following areas:Alternative EnergyAnthropogenic Impacts on Atmosphere Soil or WaterBiogeochemical CyclingBiomass or Wastes as ResourcesContaminants in Aquatic and Terrestrial EnvironmentsEnvironmental Data ScienceEcotoxicology and Public HealthEnergy and ClimateEnvironmental Modeling Processes and Measurement Methods and TechnologiesEnvironmental Nanotechnology and BiotechnologyGreen ChemistryGreen Manufacturing and EngineeringRisk assessment Regulatory Frameworks and Life-Cycle AssessmentsTreatment and Resource Recovery and Waste Management
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