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| DOI | 10.1021/acs.est.4c02015 |
| Sorption of Soil Carbon Dioxide by Biochar and Engineered Porous Carbons | |
| 发表日期 | 2024 |
| ISSN | 0013-936X |
| EISSN | 1520-5851 |
| 起始页码 | 58 |
| 结束页码 | 19 |
| 卷号 | 58期号:19 |
| 英文摘要 | CO2 is 45 to 50 times more concentrated in soil than in air, resulting in global diffusive fluxes that outpace fossil fuel combustion by an order of magnitude. Despite the scale of soil CO2 emissions, soil-based climate change mitigation strategies are underdeveloped. Existing approaches, such as enhanced weathering and sustainable land management, show promise but continue to face deployment barriers. We introduce an alternative approach: the use of solid adsorbents to directly capture CO2 in soils. Biomass-derived adsorbents could exploit favorable soil CO2 adsorption thermodynamics while also sequestering solid carbon. Despite this potential, previous study of porous carbon CO2 adsorption is mostly limited to single-component measurements and conditions irrelevant to soil. Here, we probe sorption under simplified soil conditions (0.2 to 3% CO2 in balance air at ambient temperature and pressure) and provide physical and chemical characterization data to correlate material properties to sorption performance. We show that minimally engineered pyrogenic carbons exhibit CO2 sorption capacities comparable to or greater than those of advanced sorbent materials. Compared to textural features, sorbent carbon bond morphology substantially influences low-pressure CO2 adsorption. Our findings enhance understanding of gas adsorption on porous carbons and inform the development of effective soil-based climate change mitigation approaches. |
| 英文关键词 | biochar; carbon dioxide removal; gas adsorption; porous carbon; soil; climate change mitigation |
| 语种 | 英语 |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| WOS类目 | Engineering, Environmental ; Environmental Sciences |
| WOS记录号 | WOS:001226359000001 |
| 来源期刊 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/309589 |
| 作者单位 | Stanford University; Stanford University; Stanford University |
| 推荐引用方式 GB/T 7714 | . Sorption of Soil Carbon Dioxide by Biochar and Engineered Porous Carbons[J],2024,58(19). |
| APA | (2024).Sorption of Soil Carbon Dioxide by Biochar and Engineered Porous Carbons.ENVIRONMENTAL SCIENCE & TECHNOLOGY,58(19). |
| MLA | "Sorption of Soil Carbon Dioxide by Biochar and Engineered Porous Carbons".ENVIRONMENTAL SCIENCE & TECHNOLOGY 58.19(2024). |
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