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Sustainable Energy
Published in Stanley E. Manahan, Environmental Chemistry, 2022
Carbon sequestration, which prevents carbon dioxide generated by fossil fuels from entering the atmosphere, holds the promise of enabling utilization of fossil fuels, especially coal, without contributing to greenhouse warming. Basically, the various schemes that have been proposed entail capturing carbon dioxide from a product or waste stream and sequestering it in a place where it cannot enter the atmosphere. Several approaches have been suggested or tried for capturing carbon dioxide, and there are several possibilities for sequestration. The term carbon sequestration is also used in a more general sense to apply to removal of carbon dioxide from the atmosphere, especially by photosynthesis.
Global Abatement of Air Pollution Through Green Technology Routes
Published in Shrikaant Kulkarni, Ann Rose Abraham, A. K. Haghi, Renewable Materials and Green Technology Products, 2021
Sijo Francis, Remya Vijayan, Ebey P. Koshy, Beena Mathew
Carbon sequestration refers to the process of storing carbon in soil and thus removing CO2 from the atmosphere. It is an existing approach of removing carbon from the atmosphere. It is done by planting more trees to sequester CO2 in biomass. Substantial withdrawal of CO2, biochar sequestration technology is suggested.36 Thus, along with this bioenergy production, reduction in emission is also attained. It has a crucial value in global carbon market. Biochar is the process of heating plant biomass in the absence of oxygen at high temperatures. It is actually a carbon-negative industry. Biochar improves the fertility and structure of soils by improving the biomass production. Biochar enhances efficiency and decreases their leach out.37
Carbon Sequestration Technologies
Published in Stephen A. Roosa, Arun G. Jhaveri, Carbon Reduction:, 2020
Stephen A. Roosa, Arun G. Jhaveri
In addition to natural processes, technological methods exist and are being developed. Most technology-based carbon sequestration methods are centered on the carbon capture and storage (CCS) process. Indeed, the difference in most sequestration projects is the nature of geographical storage structures (e.g., saline formations, depleted oil and gas reservoirs, deep and unmineable coal seams) not the process for retrieving and purifying the carbon.16 CCS includes the following steps:Carbon must be captured from an emission sourceThe stream is cleaned of extraneous molecules and compressedThe compressed carbon is transported and stored
Investigation on chlorella Sp. HS2 microalgae growth using CO2 from engine exhaust to study carbon sequestration
Published in Biofuels, 2023
Nirmal Charan Mallick, Shaik Mozammil, Eklavya Koshta
Carbon sequestration is the process of storage of CO2 and/or other carbon forms to curb dangerous climate change through reduction of greenhouse effects and subsequent global warming. It refers to either removing carbon from the atmosphere or from flue gases off the power plants and engines, and depositing it in a reservoir which is a type of geological sequestration, or using biological carbon sequestration, where the captured CO2 is used by plants, microalgae, or some other organisms. Biological carbon sequestration involves biological methods to remove the atmospheric CO2 such as reforestation or using microalgae for carbon capture. The microalgae, having faster growth rate and 100 times higher sequestration potential than plants, can work more efficiently for carbon sequestration [8].
Integrating cost-benefits analysis and life cycle assessment of green roofs: a case study in Florida
Published in Human and Ecological Risk Assessment: An International Journal, 2020
Lan Yao, Abdol Chini, Ruochen Zeng
Although there are lots of environmental benefits provided by green roofs, only few studies monitored and documented them through experiment. Other environmental benefits include air quality improvement, moderation of Urban Heat Island Effect (UHIE), mitigation of global warming, etc. (Berardi et al., 2014; Mayrand and Clergeau, 2018; Mora-Melià et al., 2018; Saadatian et al., 2013; Zhang et al., 2011). For instance, plants on the roof reduce gaseous pollutants and provide air quality benefits. The performance on carbon sequestration reduces the amount of carbon dioxide in atmosphere, preventing global warming and climate deterioration.
A critical review on the vermicomposting of organic wastes as a strategy in circular bioeconomy: mechanism, performance, and future perspectives
Published in Environmental Technology, 2023
Sanket Dey Chowdhury, K. Hasim Suhaib, Puspendu Bhunia, Rao Y. Surampalli
To ensure a greener and cleaner environment for future generations, the competent authorities have emphasized the zero-carbon or non-carbon emission policy in waste management. The main objective of the non-carbon waste management policy is to reduce harmful carbon emissions and lower the carbon footprint during the remediation of the organic wastes [28]. From the earlier discussions, it is observed that the VC technique reduces the GHG emissions to a great extent. Apart from maintaining aerobic condition inside the VC bed, the presence of the EWs triggers the carbon sequestration, thereby lessening the atmospheric carbon emissions [180]. Carbon sequestration is a process of fixing and storing atmospheric CO2, leading to the mitigation of global warming [181]. The land application of the vermicompost as a fertilizer further contributes to the carbon sequestration. The EWs convert the potentially mineralizable carbon into readily mineralizable carbon, which further gets converted to stabilized carbon (Figure 4). The application of vermicompost as fertilizer enhances the organic carbon fraction in the soil, which acts as a potential sink for atmospheric CO2. According to a study by Urmi et al. [182], the application of vermicompost at a rate of 5 t/ha improved the soil organic carbon proportion and aggravated carbon sequestration. Vermicompost acts as a storehouse of nutrients (N, P, and K) and soil-friendly microbes and enzymes, thereby increasing the soil-biodiversity and improving the soil-biogeochemical properties [120]. Thus, the land application of vermicompost improves micro-aggregation and cuts down the tillage, reducing GHG emissions and triggering carbon sequestration [28]. The presence of the EWs during the VC of the organic wastes reduces the carbon loss and amplifies the net carbon sequestration by generating EW-mediated carbon trap, which helps enhance the proportion of stabilized carbon [28].