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SOIL ORGANIC CARBON SEQUESTRATION MATTERS BUT IS NO PANACEA FOR CARBON-NEUTRAL AGRICULTURE

《农业科学与工程前沿（英文）》 2023年第10卷第2期页码 281-284 doi: 10.15302/J-FASE-2022470

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SOIL CARBON CHECK: A TOOL FOR MONITORING AND GUIDING SOIL CARBON SEQUESTRATION IN FARMER FIELDS

《农业科学与工程前沿（英文）》 2023年第10卷第2期页码 248-261 doi: 10.15302/J-FASE-2023499

摘要：

● Establishment of a rapid tool for monitoring soil carbon sequestration in farmer fields.

关键词： 4 per 1000 initiative carbon sequestration climate action farmer fields SDG13 soil organic carbon soil testing

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Carbon dioxide sequestration in petrochemical industries with the aim of reduction in greenhouse gas

Maryam Takht Ravanchi, Saeed Sahebdelfar, Farnaz Tahriri Zangeneh

《化学科学与工程前沿（英文）》 2011年第5卷第2期页码 173-178 doi: 10.1007/s11705-010-0562-1

摘要： The mitigation of greenhouse gas emissions to acceptable levels is arguably the greatest environmental challenge these days. Vast utilization of fossil fuels and forest destruction are main causes of CO increase in the atmosphere. Carbon dioxide sequestration that consists of separation, transportation and utilization or storage of CO , is one way for reduction of its emission, in which the most costly section is separation. Different methods can be used for carbon dioxide separation such as absorption, membrane separation, adsorption and cryogenic distillation. Economic, technical and environmental issues should be considered in selection of the technology for particular application. Carbon dioxide concentration, temperature, pressure and flow rate are influential operating parameters in the selection of the appropriate separation method. Nowadays, absorption is the worldwide industrial separation method. New researches are focused on developing new stable solvents and efficient column configuration with suitable internals to minimize pressure drop. Membrane separation and adsorption (PSA type) are other long-term alternatives that can increase separation efficiency and decrease separation cost. The level of energy consumption in various separation methods are in the order: chemical absorption>physical absorption>membrane separation. Because of high investment costs, current separation technologies are suitable for large concentrated sources. In the present paper, different processes for carbon dioxide separation are investigated and compared. Available technologies and commercial plants for CO sequestration are provided.

关键词： carbon dioxide greenhouse effect separation membrane absorption adsorption

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我国草地的固碳功能

高树琴,赵霞,方精云

《中国工程科学》 2016年第18卷第1期页码 73-79 doi: 10.15302/J-SSCAE-2016.01.010

摘要：

本文通过综述当前我国草地碳库的研究成果，并利用1982—2011年的遥感影像，估算出我国草地生态系统碳库约为31.2 PgC，其中96 %储存于土壤中。由于我国草地类型多样，分布地域广阔，造成草地植被碳密度分布的空间异质性很高。内蒙古是草地植被碳库最大的省份，其次是西藏和青海，六大牧区的植被碳库占全国草地植被碳库总量的71 %。然而，我国90 %的天然草地发生不同程度的退化，采取有效的人工管理措施和实施重大的生态建设工程，均对草地碳库的恢复具有明显的作用，说明我国草地有很大的碳汇潜力。

关键词：草地植被碳储量土壤碳储量草地退化固碳潜力

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A stepwise process for carbon dioxide sequestration using magnesium silicates

Johan FAGERLUND, Experience NDUAGU, Ron ZEVENHOVEN, Inês ROMÃO,

《化学科学与工程前沿（英文）》 2010年第4卷第2期页码 133-141 doi: 10.1007/s11705-009-0259-5

摘要： This work involves the production of magnesium in the form of Mg(OH) from serpentinite rock (nickel mine tailing) material followed by conversion into MgCO using a pressurised fluidised bed (PFB) reactor operating at 400°C–600°C and pressures up to 2.85MPa. Our approach is rooted in the thermodynamic fact that the reaction between Mg(OH) and gaseous CO forming MgCO and water releases significant amounts of heat. The main problem is, however, the chemical kinetics; the reaction is slow and has to be accelerated in order to be used in an economically viable process for large-scale (~1Mt/a) CO sequestration. We have constructed a lab-scale PFB reactor test-setup for optimising the carbonation reaction. At high enough temperatures and conversion levels the reaction should provide the heat for the proceeding Mg(OH) production step, making the overall process energy neutral. So far we have been able to achieve a conversion degree of 26% at 500°C and 2.85MPa after 30min (particle size 125–212μm). In this paper the test facility and our latest results and progress on CO mineral carbonation are summarised. Also, the possible integration of the iron as a feedstock for iron and steel production will be briefly addressed. An interesting side-effect of this carbon dioxide capture and storage (CCS) route is that significant amounts of iron are obtained from the serpentinite rock material. This is released during the Mg(OH) production and can be of great interest to the iron- and steel producing sector, which at the same time is Finland’s largest CO producer.

关键词： carbonation reaction reactor producer large-scale process

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从绿色化学的角度提高石油采收率——通过二氧化碳泡沫进行封存 Perspective

Jennifer A. Clark, Erik E. Santiso

《工程（英文）》 2018年第4卷第3期页码 336-342 doi: 10.1016/j.eng.2018.05.006

摘要：

通过二氧化碳（CO2）驱油来提高石油采收率（EOR），这作为一种经济上可行的碳封存方法受到了相当大的关注，并且最近许多研究都集中在开发增强的CO2发泡添加剂上。然而，人们对这些添加剂在泄漏事件中潜在的长期环境影响知之甚少，并且考虑到在典型的CO2 EOR操作中注入添加剂的量，其对环境的影响可能是深远的。本文概述了表面活性剂和表面活性剂/基于纳米颗粒的二氧化碳发泡体系的最新发展情况，重点介绍了CO2泡沫泄漏可能对环境造成的影响。所研究的大多数表面活性剂在油藏条件下不可能降解，并且它们的释放可能对野生动物造成严重的负面影响。随着近来添加剂使用（如非离子表面活性剂、纳米颗粒和其他化学品）的进展，可能不再允许使用苛刻的阴离子表面活性剂。本文讨论了生产泡沫系统的最新进展，并着重介绍了开发环境友好型CO2 EOR方法的可能策略。

关键词：表面活性剂纳米粒子碳封存提高石油采收率

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Carbon payments in the Guanzhong–Tianshui region to control land degradation

Zixiang ZHOU, Yufeng ZOU

《农业科学与工程前沿（英文）》 2017年第4卷第2期页码 246-253 doi: 10.15302/J-FASE-2017144

摘要： Carbon trading and carbon offset markets are potential policy options for mitigating greenhouse gas emissions and climate change. A price on carbon is expected to generate demand for carbon offsets. In a market-based framework, the carbon price should be high enough to compensate for opportunity costs. We studied a highly-modified agricultural system in the Guanzhong–Tianshui economic region of China that is typical of many temperate agricultural zones in western China. We quantified the economic returns from agriculture and from carbon plantings (both monoculture and ecological plantings) under five carbon-price scenarios. The mean carbon sequestration is 34 Mg·hm ·a , and the average annual payment increased to 1146 CNY·hm at a medium carbon price of 50 CNY·Mg CO . Thus, areas of high priority for conservation and restoration may be restored relatively cheaply in the presence of a carbon market. Overall, however, less carbon is sequestered by ecological plantings (i.e., mixed native trees and shrubs) compared to agriculture.

关键词： carbon-price carbon sequestration economic returns Guanzhong–Tianshui economic region net present value

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A systemic review of hydrogen supply chain in energy transition

《能源前沿（英文）》 2023年第17卷第1期页码 102-122 doi: 10.1007/s11708-023-0861-0

摘要： Targeting the net-zero emission (NZE) by 2050, the hydrogen industry is drastically developing in recent years. However, the technologies of hydrogen upstream production, midstream transportation and storage, and downstream utilization are facing obstacles. In this paper, the development of hydrogen industry from the production, transportation and storage, and sustainable economic development perspectives were reviewed. The current challenges and future outlooks were summarized consequently. In the upstream, blue hydrogen is dominating the current hydrogen supply, and an implementation of carbon capture and sequestration (CCS) can raise its cost by 30%. To achieve an economic feasibility, green hydrogen needs to reduce its cost by 75% to approximately 2 /kg at the large scale. The research progress in the midterm sector is still in a preliminary stage, where experimental and theoretical investigations need to be conducted in addressing the impact of embrittlement, contamination, and flammability so that they could provide a solid support for material selection and large-scale feasibility studies. In the downstream utilization, blue hydrogen will be used in producing value-added chemicals in the short-term. Over the long-term, green hydrogen will dominate the market owing to its high energy intensity and zero carbon intensity which provides a promising option for energy storage. Technologies in the hydrogen industry require a comprehensive understanding of their economic and environmental benefits over the whole life cycle in supporting operators and policymakers.

关键词： hydrogen production hydrogen transportation and storage hydrogen economy carbon capture and sequestration (CCS) technology assessment

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Managing soil quality for humanity and the planet

Rattan LAL

《农业科学与工程前沿（英文）》 2020年第7卷第3期页码 251-253 doi: 10.15302/J-FASE-2020329

摘要：

Rather than a human-centric, the basic strategy of achieving Sustainable Development Goals must be focused on restoring and sustaining planetary processes. The urgency of meeting the demands of the humanity must be reconciled with the necessity of enhancing the environment. Increasing and restoring soil organic matter content of the degraded and depleted soils is critical to strengthening planetary processes.

关键词： soil quality humanity planet climate change soil carbon sequestration food and nutritional security

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ECOLOGICAL EFFECTS OF NITROGEN DEPOSITION ON URBAN FORESTS: AN OVERVIEW

《农业科学与工程前沿（英文）》 2022年第9卷第3期页码 445-456 doi: 10.15302/J-FASE-2021429

摘要：

● Patterns and effects of N deposition on urban forests are reviewed.

关键词： biodiversity carbon sequestration nitrogen deposition nutrient imbalance soil acidification urban forest

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Cattle manure biochar and earthworm interactively affected CO and NO emissions in agricultural and forest soils: Observation of a distinct difference

《环境科学与工程前沿（英文）》 2022年第16卷第3期 doi: 10.1007/s11783-021-1473-8

摘要：

• Earthworms increase CO₂ and N₂O emissions in agricultural and forest soil.

关键词： Carbon sequestration Forest soil Cattle manure biochar Greenhouse gas emissions Soil fauna

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海底碳封存环境地质灾害风险及监测技术研究

张少鹏,刘晓磊,程光伟,朱超祁,李清平,何玉发

《中国工程科学》 2023年第25卷第3期页码 122-130 doi: 10.15302/J-SSCAE-2023.03.011

摘要：

海底CO2地质封存是我国实现“双碳”目标的重要组成部分，但CO2泄露具有诱发海底地质灾害的风险，威胁海洋工程的安全建设，因此开展封存区环境地质监测对海洋碳封存实施具有重要的现实意义。本文在简要介绍海底CO2地质封存示范案例的基础上，阐述了海底封存区CO2泄露的致灾机制，结合实例梳理了典型CO2控释试验中的海洋环境监测技术，重点分析了与CO2泄露相关的环境地质监测技术，包括地震调查与监测、电阻率法监测技术、重力监测技术、海床变形监测技术以及沉积物孔隙压力监测技术等，展望了我国海底碳封存及其环境地质监测的未来发展前景。研究认为，今后应侧重封存区CO2泄露致灾机制与环境地质监测技术研究，建议在研发长时序、低成本并实时监测技术的基础上，结合封存区基线调查，建立和发展系统性、智能性的多维度灾害识别模型，构建多方面、多层次、多灾种的监测预警预报体系。

关键词：海底碳封存；环境地质；CO2泄露；灾害风险；监测技术

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地热能储存与CO₂封存和利用的一体化框架 Article

刘月亮, 胡婷, 芮振华, 张政, 都凯, 杨涛, Birol Dindoruk, Erling Halfdan Stenby, Farshid Torabi, Andrey Afanasyevc

《工程（英文）》 2023年第30卷第11期页码 121-130 doi: 10.1016/j.eng.2022.12.010

摘要：

地下地热能储存在封存容量和封存周期上比其他储能策略更具有潜力。二氧化碳（CO₂）由于其优越的热力学属性而被视是一种极具潜力的储能介质。此外，利用CO₂羽流进行地热储能可通过将CO₂储存于地质体中来缓解温室效应。本文提出了一个协同地热能储能和二氧化碳封存利用的一体化框架：CO₂首先被注入到地热层以进行能量积累。然后，将产生的高能CO₂引入到目标油藏中，用于CO₂利用和地热能储存。最后，将CO₂有效地封存在地质油藏体中。结果表明，随着高能CO₂的注入，整个目标油藏的平均温度大幅度提高。在地热能的协助下，CO₂的地质利用率更高，从而使驱油效率提高了10.1%。根据对模拟CO₂场地的封存潜力的评估，CO₂注入110年后，地质体的利用率将高达91.2%，场地内CO₂的最终注入量将高达9.529 × 10⁸t。经过1000年封存，超临界相在CO₂封存中占主导地位，其次是液相，然后是矿化相。此外，由于残余油的存在，用于溶解捕获的CO₂封存量显著增加。更重要的是，CO₂在大规模储存地热能方面表现出优异的性能；例如，在所研究的地质体中储存的总能量每年可为超过3.5 × 10⁷户正常家庭提供能源供应。采用这种一体化方法对大规模地热能储存以及到2050年实现碳中和目标具有十分重要的意义。

关键词：地热能储存 CO₂封存碳中和大规模 CO₂利用

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我国典型农作区作物生产碳汇功能研究

佘玮,黄璜,官春云,陈阜,陈光辉

《中国工程科学》 2016年第18卷第1期页码 106-113 doi: 10.15302/J-SSCAE-2016.01.013

摘要：

我国是一个农业大国，研究我国典型农作区作物生产碳汇对于估算区域碳收支和制定应对气候变化的管理政策有重要的意义。全国6个典型农作区中主要农作物生产整体表现为碳汇。同一区域内不同作物的碳汇量差异明显，同一作物在不同区域之间差异显著。全国年土壤有机碳储量整体表现为碳汇，不同区域年土壤有机碳储量的范围为–2.07 TgC·y–1~19.95 TgC·y–1。

关键词：作物生产固碳减排措施碳汇功能