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  • ISSN: 2333-7141
    Early Online
    Volume 8, Issue 1
    Short Communication
    Manuel Jiménez Aguilar*
    For decades, carbon dioxide emissions have been an environmental and health issue. Amines like Monoethanolamine (MEA) have long been used for CO2 capture by chemical absorption. However, some drawbacks, such as toxicity, low stability and high cost limit widespread adoption of this technology. New and green solvents could be a possible solution to this issue. CO2 solubility in glycerol-urine mixtures at ambient temperature as a green solvent was studied. The experiments were carried out in a pressure pump keeping in contact at room temperature CO2 at 3 bar of pressure with different dilutions of glycerin and urine. The absorbed CO2 is measured in dry samples with a microbalance.
    Results indicated that the solubility of the gas in the glycerol-urine mixtures increased almost linearly with diluted glycerol. Carbon dioxide absorption values indicate that aqueous solutions of Glycerol and Urine can be a good system for CO2 capture by physical abpsortion.
    Research Article
    Mbong EO*, Osu SR, Uboh DG, and Ekpo I
    A field research was conducted to assess abundance and distribution of species in relation to soil properties in Sedge-dominated Habitats in Uyo Metropolis, Southern Nigeria Systematic sampling method was used. The result of the study revealed that a total of 12 plant species of which 3 were members of the family Cyperaceae were identified in the habitats studied. The Cyperaceae members found were of the genus: Cyperus. Other associated species found were Sida acuta, Scoparia dulcis, Chromolaena odorata, Eleusine indica, Ludwigia decurens etc. The highest density values obtained in this study is characteristic of Cyperus iria in Habitat 4 (9500 st/ha) while the least density value is characteristic of Plastostoma africanum in Habitat 2 (200st/ha). Multivariate correlation and regression techniques evidenced that these differences in density of the sedges reflected the functions of various important soil properties such as pH, exchangeable Ca, soil moisture, total nitrogen and available phosphorus. Most specifically, the current result concludes that Cyperus iria showed strong affinity for alkaline soils rich in calcium while Cyperus difformis and Cyperus rotundus showed strong preference for acid soils. Cyperus difformis, Cyperus rotundus and Cyperus haspan flourished in soils rich in organic manure while Cyperus iria colonies were found thrived on soils with limiting levels of phosphorus This result lends knowledge and practical application in environmental management, weed science and habitat ecology.
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