scholarly journals Decarbonisation of calcium carbonate at atmospheric temperatures and pressures, with simultaneous CO2 capture, through production of sodium carbonate

2021 ◽  
Author(s):  
Theodore Hanein ◽  
Marco Simoni ◽  
Chun Long Woo ◽  
John L Provis ◽  
Hajime Kinoshita
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Co2 Emissions ◽  
High Temperatures ◽  
Sodium Carbonate ◽  
Co2 Capture ◽  
Major Contributor ◽  
Calcination Process ◽  
Carbon Dioxide Co2

The calcination of calcium carbonate (CaCO3) is a major contributor to carbon dioxide (CO2) emissions that are changing our climate. Moreover, the calcination process requires high temperatures (~900°C). A novel...

scholarly journals Estimation of Carbon Dioxide Emissions from a Traditional Nutrient-Rich Cambodian Diet Food Production System Using Life Cycle Assessment

2021 ◽  
Vol 13 (7) ◽  
pp. 3660
Author(s):  
Rathna Hor ◽  
Phanna Ly ◽  
Agusta Samodra Putra ◽  
Riaru Ishizaki ◽  
Tofael Ahamed ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Co2 Emissions ◽  
Production System ◽  
Agricultural Production ◽  
Carbon Dioxide Emissions ◽  
Food Production ◽  
Carbon Dioxide Co2 ◽  
Food Production System

Traditional Cambodian food has higher nutrient balances and is environmentally sustainable compared to conventional diets. However, there is a lack of knowledge and evidence on nutrient intake and the environmental greenness of traditional food at different age distributions. The relationship between nutritional intake and environmental impact can be evaluated using carbon dioxide (CO2) emissions from agricultural production based on life cycle assessment (LCA). The objective of this study was to estimate the CO2 equivalent (eq) emissions from the traditional Cambodian diet using LCA, starting at each agricultural production phase. A one-year food consumption scenario with the traditional diet was established. Five breakfast (BF1–5) and seven lunch and dinner (LD1–7) food sets were consumed at the same rate and compared using LCA. The results showed that BF1 and LD2 had the lowest and highest emissions (0.3 Mt CO2 eq/yr and 1.2 Mt CO2 eq/yr, respectively). The food calories, minerals, and vitamins met the recommended dietary allowance. The country’s existing food production system generates CO2 emissions of 9.7 Mt CO2 eq/yr, with the proposed system reducing these by 28.9% to 6.9 Mt CO2 eq/yr. The change in each food item could decrease emissions depending on the type and quantity of the food set, especially meat and milk consumption.

Nitrogen-rich hierarchically porous polyaniline-based adsorbents for carbon dioxide (CO2) capture

2019 ◽  
Vol 360 ◽  
pp. 1199-1212 ◽  
Author(s):  
Edith Mawunya Kutorglo ◽  
Fatima Hassouna ◽  
Anna Beltzung ◽  
Dušan Kopecký ◽  
Ivona Sedlářová ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
Hierarchically Porous ◽  
Carbon Dioxide Co2

scholarly journals Regeneration Energy Analysis of Aqueous Tri–Solvent Blends Containing 2–Amino–2–Methyl–1–Propanol (AMP), Methyldiethanolamine (MDEA) and Diethylenetriamine (DETA) for Carbon Dioxide (CO2) Capture

2017 ◽  
Vol 114 ◽  
pp. 2039-2046 ◽  
Author(s):  
Chikezie Nwaoha ◽  
Chintana Saiwan ◽  
Teeradet Supap ◽  
Raphael Idem ◽  
Paitoon Tontiwachwuthikul ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
Energy Analysis ◽  
Solvent Blends ◽  
Carbon Dioxide Co2

scholarly journals The travel-related carbon dioxide emissions of atmospheric researchers

2008 ◽  
Vol 8 (2) ◽  
pp. 7373-7389 ◽  
Author(s):  
A. Stohl
Keyword(s):  
Carbon Dioxide ◽  
Co2 Emissions ◽  
Information Exchange ◽  
Carbon Dioxide Emissions ◽  
Radiative Forcing ◽  
Global Climate ◽  
Air Travel ◽  
Ozone Production ◽  
Per Capita ◽  
Carbon Dioxide Co2

Abstract. Most atmospheric scientists agree that greenhouse gas emissions have already caused significant changes to the global climate system and that these changes will accelerate in the near future. At the same time, atmospheric scientists who – like other scientists – rely on international collaboration and information exchange travel a lot and, thereby, cause substantial emissions of carbon dioxide (CO2). In this paper, the CO2 emissions of the employees working at an atmospheric research institute (the Norwegian Institute for Air Research, NILU) caused by all types of business travel (conference visits, workshops, field campaigns, instrument maintainance, etc.) were calculated for the years 2005–2007. It is estimated that more than 90% of the emissions were caused by air travel, 3% by ground travel and 5% by hotel usage. The travel-related annual emissions were between 1.9 and 2.4 t CO2 per employee or between 3.9 and 5.5 t CO2 per scientist. For comparison, the total annual per capita CO2 emissions are 4.5 t worldwide, 1.2 t for India, 3.8 t for China, 5.9 t for Sweden and 19.1 t for Norway. The travel-related CO2 emissions of a NILU scientist, occurring in 24 days of a year on average, exceed the global average annual per capita emission. Norway's per-capita CO2 emissions are among the highest in the world, mostly because of the emissions from the oil industry. If the emissions per NILU scientist derived in this paper are taken as representative for the average Norwegian researcher, travel by Norwegian scientists would nevertheless account for a substantial 0.2% of Norway's total CO2 emissions. Since most of the travel-related emissions are due to air travel, water vapor emissions, ozone production and contrail formation further increase the relative importance of NILU's travel in terms of radiative forcing.

Impact of structure, doping and defect- engineering in 2D materials for CO2 capture and conversion

2021 ◽  
Author(s):  
E. J. Jelmy ◽  
Nishanth Thomas ◽  
Dhanu Treasa Mathew ◽  
Jesna Louis ◽  
Nisha T Padmanabhan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
2D Materials ◽  
Vital Role ◽  
Energy Crisis ◽  
Two Dimensional ◽  
Defect Engineering ◽  
Anthropogenic Carbon ◽  
2D Nanomaterials ◽  
Carbon Dioxide Co2

The investigations on anthropogenic carbon dioxide (CO2) capture and conversion have a vital role in eradicating the global warming and energy crisis. In this context, defect- engineered two-dimensional (2D) nanomaterials...

scholarly journals A study on CO2 absorption using hybrid solvents in packed columns

2019 ◽  
Author(s):  
Ravinder Kumar ◽  
Mohammad Hossein Ahmadi ◽  
Dipen Kumar Rajak ◽  
Mohammad Alhuyi Nazari
Keyword(s):  
Carbon Dioxide ◽  
Co2 Capture ◽  
Power Plants ◽  
Large Scale ◽  
Carbon Dioxide Capture ◽  
Packed Column ◽  
Absorption Efficiency ◽  
Co2 Absorption ◽  
Process Industries ◽  
Carbon Dioxide Co2

Abstract Greenhouse gases emissions from large scale industries as well as gasoline based vehicles are mainly responsible for global warming since the 1980s. At present, it has triggered global efforts to reduce the level of GHG. The contribution of carbon dioxide (CO2) in polluting the environment is at a peak due to the excessive use of coal in power plants. So, serious attention is required to reduce the level of CO2 using advanced technologies. Carbon dioxide capture and storage may play an important role in this direction. In process industries, various carbon dioxide capture techniques can be used to reduce CO2 emissions. However, post-combustion carbon dioxide capture is on top priority. Nowadays the researcher is focusing their work on CO2 capture using hybrid solvent. This work highlights a review of carbon dioxide capture using various kind of hybrid solvent in a packed column. The various challenges for absorption efficiency enhancement and future direction are also discussed in the present work. It is concluded through the literature survey that hybrid solvent shows better efficiency in comparison to the aqueous solution used for CO2 capture.

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