International Journal of Environment and Bioenergy
ISSN: 2165-8951 (online)Search Article(s) by:
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Table of Content for Vol. 13 No. 1, 2018

Anthropogenic and Weathering Controls on the Water Chemistry of Wular Lake-INDIA: Using Hydro-geochemical & Statistical Approaches
Javid A Sheikh
      
 PP. 1 - 7
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ABSTRACT: 150 water samples were collected to asses weathering and anthropogenic Controls on water chemistry of Wular Lake-India. The results revealed lake waters are Alkine in nature. The order of major cations and anions was Ca2+>Mg2+>Na+>K+ and HCO3->SO42->Cl-, respectively further reveals three chemical water types are present: Mg-HCO3, Ca-HCO3 and Hybrid-type. The geochemical processes suggested that chemical composition lake water is mostly influenced by the lithology of the of basin (carbonates, silicates and sulphates) which had played a significant role in modifying hydro-geochemical facies in the form of Ca–HCO3, Mg–HCO3 and hybrid type. Correlation coefficient matrix for the major ions of water samples shows high positive and significant relation between Ca2+, Mg2+ and HCO3-; Ca2+ and Hardness suggesting carbonate lithology as source of ions mainly coming through dissolution of calcite. A positive relationship between Mg2+ and HCO3- ; Mg 2+ and Hardness indicate some contribution coming through dissolution of dolomite as well. Moreover, a positive and significant correlation between Na+ and Cl- cannot be related solely to the dissolution of soil- salts, a significant contribution may be furnished from anthropogenic sources in the form of domestic wastes, evaporation, thereby increasing the salinity of Wular waters. The positive correlation of K+, Na+, SO42- and Cl- with NO3-; manifested the possible anthropogenic inputs from agricultural activities and domestic wastes.


Assessing the Thermal Comfort Perception and Preferences of the Residents of Akure Metropolis, Nigeria
Adegoke Oluwafemi
      
 PP. 8 - 15
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ABSTRACT: The temperature over Akure has been on the increase over the last few decades. This increase is not unconnected to the current global warming phenomenon. Hence, a study is required to assess the level of the perception and the varied preferences of the residents in Akure metropolis to the thermal environment. A survey questionnaire which constitute the primary dataset used for this study was administered in the study area which was divided into five landuse classes (Residential, Commercial, Industrial, Administrative and Institutional). The responses from the survey shows that 35% of the respondents felt hot as at the time of the survey, 25.5% felt warm, 23.5% were neutral, while 16% felt cool. Of the total respondents, a staggering 51% preferred the environment to be cooler as compared to 9% who preferred the environment to be warmer. 40% of the respondents stayed neutral on their preference. The study also showed that the respondents in the residential landuse perceived more hotness compared to respondents in other landuse classes.


Effect of PGPR on Biochemical Changes and Antioxidant Status in Root and Shoot of Groundnut (Arachis hypogaea.L)
S.Mathivanan, A.L.A.Chidambaram, G. Amalan Rabert, R.Kalaikandhan and Kaliyamoorthy Jayakumar
      
 PP. 16 - 37
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ABSTRACT: This study examined the effects of inoculation with three rhizobacteria strains, (Rhizobium sps + Pseudomonas fluorescens + Bacillus substilis) on biochemical contents such as (amino acid and sugar), antioxidant enzyme activities including (Catalase (CAT), Peroxidase (POX) and Polyphenol oxidase (PPO). The experiment was conducted using PGPR to analysis on amino acid, sugar, catalase, peroxidase and polyphenol oxidase content in root and leaf portion of groundnut at 25, 50, 75 and 100 DAS interval. The highest biochemical content of amino acid, sugar at 100 DAS was recorded in leaf portion of groundnut grown with Rhizobium + Pseudomonas + Bacillus treatment of PGPR. The highest enzyme activity of catalase, peroxidase and polyphenol oxidase at 75 DAS was recorded in leaf portion of groundnut grown with Rhizobium + Pseudomonas + Bacillus treatment of PGPR. The lowest biochemical content of amino acid, sugar, catalase, peroxidase and polyphenol oxidase at various sampling days (25, 50, 75 and 100) were recorded in the root portion of groundnut crop grown without plant growth promoting rhizobacteria.