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Liu SS, Song JM, Li XG, Yuan HM, Duan LQ, Li SC, Wang ZB, Ma J. Enhancing CO 2 storage and marine carbon sink based on seawater mineral carbonation. MARINE POLLUTION BULLETIN 2024; 206:116685. [PMID: 39002220 DOI: 10.1016/j.marpolbul.2024.116685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 06/30/2024] [Accepted: 07/03/2024] [Indexed: 07/15/2024]
Abstract
Human activities emitting carbon dioxide (CO2) have caused severe greenhouse effects and accelerated climate change, making carbon neutrality urgent. Seawater mineral carbonation technology offers a promising negative emission strategy. This work investigates current advancements in proposed seawater mineral carbonation technologies, including CO2 storage and ocean chemical carbon sequestration. CO2 storage technology relies on indirect mineral carbonation to fix CO2, involving CO2 dissolution, Ca/Mg extraction, and carbonate precipitation, optimized by adding alkaline substances or using electrochemical methods. Ocean chemical carbon sequestration uses natural seawater for direct mineral carbonation, enhanced by adding specific materials to promote carbonate precipitation and increase CO2 absorption, thus enhancing marine carbon sinks. This study evaluates these technologies' advantages and challenges, including reaction rates, costs, and ecological impacts, and analyzes representative materials' carbon fixation potential. Literature indicates that seawater mineral carbonation can play a significant role in CO2 storage and enhancing marine carbon sinks in the coming decades.
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Affiliation(s)
- Shan Shan Liu
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Qingdao Marine Science and Technology Center, Laboratory of Marine Ecology and Environmental Sciences, Qingdao 266237, China
| | - Jin Ming Song
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Qingdao Marine Science and Technology Center, Laboratory of Marine Ecology and Environmental Sciences, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Xue Gang Li
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Qingdao Marine Science and Technology Center, Laboratory of Marine Ecology and Environmental Sciences, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Hua Mao Yuan
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Qingdao Marine Science and Technology Center, Laboratory of Marine Ecology and Environmental Sciences, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Qin Duan
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Qingdao Marine Science and Technology Center, Laboratory of Marine Ecology and Environmental Sciences, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuo Chen Li
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi Bo Wang
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Ma
- Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Qingdao Marine Science and Technology Center, Laboratory of Marine Ecology and Environmental Sciences, Qingdao 266237, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Zhu C, Hu C, Liu J, Chi Z, Jiao N. Integrating bicarbonate-based microalgal production with alkaline sewage for ocean negative carbon emissions. Trends Biotechnol 2024:S0167-7799(24)00178-1. [PMID: 39048412 DOI: 10.1016/j.tibtech.2024.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/24/2024] [Accepted: 06/28/2024] [Indexed: 07/27/2024]
Abstract
Using sewage (wastewater) for ocean alkalinity enhancement (OAE) has been considered as one promising ocean negative carbon emissions (ONCE) approach due to its high carbon sequestration efficiency and low environmental risk. To make this process more profitable and sustainable, this perspective proposes to integrate bicarbonate-based microalgal production and sewage alkalinity enhancement for ONCE. In this concept, the spent aqueous alkaline bicarbonate-based microalgal medium is cheap or even free for OAE, while the produced microalgae with high value-added compositions make this process more profitable. To make the proposed idea more efficient and sustainable, the prospects for its future development are also discussed in this opinion article. This perspective provides a novel and practical idea for achieving efficient carbon neutralization and high economic value simultaneously.
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Affiliation(s)
- Chenba Zhu
- Carbon Neutral Innovation Research Center, Xiamen University, Xiamen, 361005, China; Global Ocean Negative Carbon Emissions (ONCE) Program, Research Center for Ocean Negative Carbon Emissions, Xiamen, Fujian, 361000, China; Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, 361005, China.
| | - Chen Hu
- Global Ocean Negative Carbon Emissions (ONCE) Program, Research Center for Ocean Negative Carbon Emissions, Xiamen, Fujian, 361000, China; College of the Environment and Ecology, Xiamen University, Xiamen, 361102, China
| | - Jihua Liu
- Global Ocean Negative Carbon Emissions (ONCE) Program, Research Center for Ocean Negative Carbon Emissions, Xiamen, Fujian, 361000, China; Institute of Marine Science and Technology, Shandong University, Qingdao, 266237, China
| | - Zhanyou Chi
- School of Bioengineering, Dalian University of Technology, Dalian, 116024, China
| | - Nianzhi Jiao
- Carbon Neutral Innovation Research Center, Xiamen University, Xiamen, 361005, China; Global Ocean Negative Carbon Emissions (ONCE) Program, Research Center for Ocean Negative Carbon Emissions, Xiamen, Fujian, 361000, China; Fujian Key Laboratory of Marine Carbon Sequestration, Xiamen University, Xiamen, 361005, China.
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Zhu T, Zheng L, Li F, Liu J, Zhuang W. Sustainable carbon sequestration via olivine based ocean alkalinity enhancement in the east and South China Sea: Adhering to environmental norms for nickel and chromium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 930:172853. [PMID: 38685434 DOI: 10.1016/j.scitotenv.2024.172853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/02/2024]
Abstract
Enhancing silicate weathering to increase oceanic alkalinity, thereby facilitating the absorption of atmospheric carbon dioxide (CO2), is considered a highly promising technique for carbon sequestration. This study aims to evaluate the feasibility and potential of olivine-based ocean alkalinity enhancement (OAE) for the removal of atmospheric CO2 and its storage in seawater as bicarbonates in the East and South China Seas (ESCS). A particular focus is placed on the potential ecological impacts arising from the release of nickel (Ni) and chromium (Cr) during the olivine weathering process. We considered two extreme scenarios: one where Ni and Cr are entirely retained in seawater, and another where they are completely deposited in sediments. These scenarios respectively represent the maximum permissible concentrations of Ni and Cr in seawater and sediments during the OAE process. Current marine environmental quality standards (EQS) were utilized as the threshold limits for Ni and Cr in both seawater and sediment, with concentrations exceeding these EQS potentially leading to significant adverse effects on marine life. When all released Ni is retained in seawater, the allowable dosage of olivine varies from 0.05 to 13.7 kg/m2 (depending on olivine particle size, temperature, and water depth); when all released Ni is captured by sediment, the permissible addition of olivine ranges from 0.21 to 2.1 kg/m2 (depending on mixing depth). Given the low solubility of Cr, it is not necessary to consider the scenario where Cr exceeds the limit in seawater. The allowable amount of Cr entirely retained in sediments ranges from 0.69 to 47.2 kg/m2.In most scenarios, the accumulation of metals in sediments preferentially exceeds the corresponding threshold value rather than remaining in seawater. Therefore, we recommend using alkalization equipment to fully dissolve olivine before discharging into the sea, enabling a larger-scale application of olivine without significant negative ecological impacts.
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Affiliation(s)
- Tianqiang Zhu
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China; School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; National Laboratory for Marine Science and Technology, Qingdao 266237, China; Institute of Eco-environmental Forensics, Shandong University, Qingdao 266237, China
| | - Liwen Zheng
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China
| | - Feng Li
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China; School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; National Laboratory for Marine Science and Technology, Qingdao 266237, China; Institute of Eco-environmental Forensics, Shandong University, Qingdao 266237, China
| | - Jihua Liu
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China.
| | - Wen Zhuang
- Institute of Marine Science and Technology, Shandong University, Qingdao 266237, China; School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China; National Laboratory for Marine Science and Technology, Qingdao 266237, China; Institute of Eco-environmental Forensics, Shandong University, Qingdao 266237, China.
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Zhang S, Wang M, Liang C, Zhu Z. Experimental Study on the Improvement of Char Physicochemical Properties and Reactivity by Activation Process in CFB. ACS OMEGA 2024; 9:24500-24512. [PMID: 38882069 PMCID: PMC11170655 DOI: 10.1021/acsomega.4c00467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 05/11/2024] [Accepted: 05/14/2024] [Indexed: 06/18/2024]
Abstract
Solid carbon can be transformed into activated char with higher reactivity through the activation process in a circulating fluidized bed (CFB) to improve the Boudouard reaction. A new technology for reducing CO2, the activated-reduction technology, was proposed. In order to investigate the influence of relevant parameters (carbon dioxide addition, oxygen concentration, and O2/C) of the activation process on the physicochemical properties and reactivity of activated char, the experiments were carried out on a bench-scale CFB. The relationship between the parameters and the reactivity of activated char is explored. The result shows that compared with the raw coal, the pore structure of activated char is developed, the number of active sites increases, the degree of graphitization decreases, and higher reactivity is possessed. For the activation process, less of the O2/C and moderate oxygen concentration promote the increase in activated char reactivity, which is conducive to the reduction of CO2. The results of the correlation discussion show that the reactivity is difficult to be characterized by a single simple parameter. The reactive specific surface area (RSSA) obtained by multiplying the mesoporous specific surface area and I D3+D4/I all has a good effect on describing the reactivity.
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Affiliation(s)
- Siyuan Zhang
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingyue Wang
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
| | - Chen Liang
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
| | - Zhiping Zhu
- Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory of Coal Conversion, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
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Li X, Yang J, Zhao Y, Zhou S, Wu Y. Prediction and assessment of marine fisheries carbon sink in China based on a novel nonlinear grey Bernoulli model with multiple optimizations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 914:169769. [PMID: 38181964 DOI: 10.1016/j.scitotenv.2023.169769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 12/17/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024]
Abstract
The vigorous development of marine fisheries carbon sinks (MFCS) has become a momentous pathway to mitigate global warming and effectively cope with the climate crisis. Deservedly, based on clarifying mechanism of carbon sequestration, this paper designs a research paradigm for predicting and evaluating the potential of MFCS. Specifically, a novel nonlinear grey Bernoulli model, namely MFCSNGBM(1,1), is proposed by innovatively mining the original data law through adaptive cumulative series and introducing the compound Simpson formula to optimize background values. More precisely, we utilize a heuristic Grey Wolf Optimization algorithm to find the best power index, which enhances the adaptability. To prove usefulness and robustness of MFCSNGBM(1,1) model, yields of seven common shellfishes (oyster, clam, mussel, scallop, razor clam, bloody clam, and snail) and three main algae (kelp, pinnatifid undaria, and laver) are predicted and compared with six competing models. Based on prediction results, new model has the most accurate predictions, with all prediction errors being <10 %, and thus can achieve effective prediction of shellfish and algae production from 2022 to 2025. Further, the capacity and potential of MFCS in China are scientifically evaluated using a removable carbon sink model, considering various yield levels and biological parameters of shellfish and algae. The assessment results show that during the sample period, China's marine fisheries carbon sinks steadily increased with an annual growth rate of 57,000 tons. From 2022 to 2025, with support of policy of MFCS and improvement of disaster prevention and mitigation capacity, the potential of MFCS will be further released. The growth rate of MFCS will be increased to 94,000 tons per year, and its overall scale is expected to reach 2,198,245 tons by 2025, equivalent to fixing 8.06 million tons of CO2. The carbon sink's economic value is significantly estimated to be over 400 billion yuan.
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Affiliation(s)
- Xuemei Li
- School of Economics, Ocean University of China, Qingdao 266100, China; Institute of Marine Development, Ocean University of China, Qingdao 266100, China
| | - Jin Yang
- School of Economics, Ocean University of China, Qingdao 266100, China
| | - Yufeng Zhao
- Institute of Marine Development, Ocean University of China, Qingdao 266100, China; School of Management, Ocean University of China, Qingdao 266100, China
| | - Shiwei Zhou
- School of Economics, Ocean University of China, Qingdao 266100, China; Institute of Marine Development, Ocean University of China, Qingdao 266100, China.
| | - Yajie Wu
- College of Engineering, Ocean University of China, Qingdao 266100, China.
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