Alkalinity addition to coastal seawater in conjunction with green hydrogen generation: chemical and biological impacts and verification of CO2 uptake.

沿海海水碱度添加与绿色氢生成：化学和生物影响以及二氧化碳吸收验证。

• 批准号: 561758-2021
• 负责人: Wallace, Douglas
• 金额: $ 7.87万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=722065
• 关键词: Alkalinity; addition; coastal; seawater; conjunction

The proposed research will assess the efficacy, impacts and benefits of adding hydroxide to seawater, examining how it affects ocean chemistry, CO2 uptake, and selected marine biota. The research questions arise in connection with Planetary Hydrogen's innovative low-energy, cost-effective process which uses renewable energy to electrolyze a saline solution, producing hydroxide ions and hydrogen gas. Adding the hydroxide to the surface ocean will capture atmospheric CO2 and convert it to dissolved bicarbonate, mimicking natural weathering reactions that have created the ocean's massive bicarbonate and carbonate ion reservoir. The added alkalinity also can help reverse ocean acidification caused by CO2 uptake, benefiting acid-sensitive organisms that include commercially important shellfish. The project will involve laboratory experimentation to confirm theoretical understanding of the chemical response to alkalinity addition. Experiments with coastal phytoplankton and with oyster larve in a commercial hatchery will examine biological responses.The project will also involve field experiments and modelling in order to develop and test vmonitoring approaches that can be used to verify that the alkalinity addition results in the expected amount of atmospheric CO2 uptake. Overall, the results will contribute to the development of Planetary Hydrogen's novel co-production process, which generates hydroxide and clean hydrogen (H2) - a valuable fuel and feedstock. It will provide key information to guide establishment of Planetary Hydrogen's first pilot plant in Nova Scotia.Our multidisciplinary partnership brings together Dalhousie University researchers, Planetary Hydrogen Inc., Fisheries and Oceans Canada scientists, the ClimateWorks Foundation, the Thistledown Foundation, and a commercial oyster hatchery, L'Étang Ruisseau Bar. The team includes experts from Germany's GEOMAR Helmholtz Centre for Ocean Research Kiel and the Scripps Institution of Oceanography (USA).

拟议的研究将评估向海水中添加氢氧化物的功效、影响和益处，研究它如何影响海洋化学、二氧化碳吸收和选定的海洋生物群。研究问题与行星氢的创新低能耗、具有成本效益的工艺有关。它使用可再生能源电解盐溶液，产生氢氧根离子和氢气，将氢氧化物添加到海洋表面将捕获大气中的二氧化碳并将其转化为溶解的碳酸氢盐，模仿产生自然风化反应。增加的碱度还可以帮助逆转由二氧化碳吸收引起的海洋酸化，使包括商业上重要的贝类在内的酸敏感生物受益，该项目将涉及实验室实验，以确认对碱度添加的化学反应的理论理解。在商业孵化场对沿海浮游植物和牡蛎幼体进行的实验将检查生物反应。该项目还将涉及现场实验和建模，以开发和测试 vmonitoring。总体而言，这些结果将有助于开发 Planetary Hydrogen 的新型联产工艺，该工艺可产生氢氧化物和清洁氢气 (H2)。它将提供关键信息，指导 Planetary Hydrogen 在新斯科舍省建立第一个试点工厂。我们的多学科合作伙伴关系汇集了达尔豪斯大学的研究人员、Planetary Hydrogen 公司、加拿大渔业和海洋局。该团队包括来自德国基尔 GEOMAR 亥姆霍兹海洋研究中心和美国斯克里普斯海洋研究所的专家。