greenhouse gas emission

Microbial Conversion and Utilization of CO2

  • Ge-Ge Wang, Yuan Zhang, Xiao-Yan Wang* and Gen-Lin Zhang

Published on: 4th September, 2023

Rising greenhouse gas emissions have contributed to unprecedented levels of climate change, while microbial conversion and utilization of CO2 is a practical way to reduce emissions and promote green manufacturing. This article mainly summarizes several natural CO2 pathways that have been discovered, including the Calvin cycle, the reduced tricarboxylic acid (rTCA) cycle, the Wood–Ljungdahl (WL) pathway, the 3-hydroxypropionate/4-hydroxybutyrate (HP/HB) cycle, the dicarboxylate/4-hydroxybutyrate (DC/HB) cycle, the 3-hydroxypropionate (3HP) cycle, the reductive glycine (rGly) pathway, and artificially designed carbon fixation pathways includes the CETCH cycle, the MOG pathway, the acetyl-CoA bicycle, and the POAP cycle. We also discussed applications of different carbon fixation enzymes, notably ribulose-1, 5-diphosphate carboxylase/oxygenase, pyruvate carboxylase, carbonic anhydrase, as well as formate dehydrogenase. This paper further addressed the development of photosynthetic autotrophs, chemergic autotrophs and model bacteria Escherichia coli or yeast produced main products for CO2 fixation through metabolic engineering, such as alcohols, organic acids, fatty acids and lipids, bioplastics, terpenoids, hydrocarbons, and biomass.  Future studies on CO2 microbial conversion should focus on improving the efficiency of carbon fixation enzymes, metabolic modules of the carbon sequestration pathway, and intracellular energy utilization. Coupled microbial and electrochemical methods for CO2 fixation, in addition to biological fixation, show considerable promise. 
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AbstractDOI: 10.29328/journal.acee.1001055Read Full Article HTMLRead Full Article PDF

Minimising Carbon Footprint in Anaesthesia Practice

  • Nisha Gandhi and Abinav Sarvesh SPS*

Published on: 19th October, 2024

Carbon footprint refers to the total amount of greenhouse gas emitted in the atmosphere by an individual or by an organization causing global warming. There are various causes of greenhouse gas emissions and anaesthetic gases are one amongst them. Greenhouse gases warm the earth by absorbing infrared energy and slowing the rate at which the energy escapes into space. Each greenhouse gas has two important properties. One is the amount of infrared energy that a gas can absorb and the other is the lifetime of that gas in the atmosphere. Anaesthesia as a speciality contributes to carbon footprinting in three ways: direct emission, energy use, and operating room wastes and supplies. Direct emission of Waste Anaesthetic Gases (WAG) from anaesthesia workstations can either be scavenged and thrown out into the environment causing a green greenhouse gas effect or can pollute the operating room due to poor scavenging. Various techniques such as reducing direct emissions, energy use optimisation, and waste management have been tried in minimising carbon footprint in anaesthesia practice but providing safety to the patient is considered of utmost importance.
Cite this ArticleCrossMarkPublonsHarvard Library HOLLISGrowKudosResearchGateBase SearchOAI PMHAcademic MicrosoftScilitSemantic ScholarUniversite de ParisUW LibrariesSJSU King LibrarySJSU King LibraryNUS LibraryMcGillDET KGL BIBLiOTEKJCU DiscoveryUniversidad De LimaWorldCatVU on WorldCat
AbstractDOI: 10.29328/journal.ijcar.1001025Read Full Article HTMLRead Full Article PDF

Case Study: Challenges Facing Africa in Fighting Climate Change

  • Mark Agyei-Sakyi*

Published on: 23rd December, 2024

Africa is one of the continent’s most vulnerable to the effects of climate change despite contributing the least to global greenhouse gas emissions. The continent has faced many environmental challenges recently, including rising temperatures, altered precipitation patterns, frequent droughts, and extreme weather events. These changes exacerbate existing vulnerabilities in agriculture, water resources, human health, and infrastructure, which are vital for the livelihoods of millions of people. Africa’s population is 60% occupied by agriculture and is threatened by shifting rainfall patterns and extended droughts. Crop yields are increasingly variable, leading to food insecurity and exacerbating poverty. Water scarcity is another pressing concern, as reduced rainfall and more frequent droughts strain already limited water resources, affecting agriculture and access to clean drinking water. Coastal regions are also at risk, with rising sea levels threatening millions living in low-lying areas. In effect, the impacts of climate change extremely affect Africa’s low-level income populations, deepening social and economic inequalities. Africa’s limited financial resources and infrastructure hinder its ability to adapt to these challenges. Nonetheless, Africa also has the potential for resilience through nature-based solutions, renewable energy investments, and regional cooperation. Efforts to enhance climate adaptation, such as sustainable farming practices, improved water management, and climate-smart policies, are critical in building the resilience of communities in combating climate change.
Cite this ArticleCrossMarkPublonsHarvard Library HOLLISGrowKudosResearchGateBase SearchOAI PMHAcademic MicrosoftScilitSemantic ScholarUniversite de ParisUW LibrariesSJSU King LibrarySJSU King LibraryNUS LibraryMcGillDET KGL BIBLiOTEKJCU DiscoveryUniversidad De LimaWorldCatVU on WorldCat
AbstractDOI: 10.29328/journal.acr.1001116Read Full Article HTMLRead Full Article PDF

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