Research Article
Ecological Assessment of Soil Samples Around Refuse Dump Sites Within the Metropolis of Enugu State, Nigeria
Nwanjoku Chioma Helen,
Ameh Godwin Ikechukwu,
Edeoga Cyril Onyeka,
Emeka Henry Oparaji*
Issue:
Volume 8, Issue 2, December 2024
Pages:
30-36
Received:
29 March 2024
Accepted:
27 May 2024
Published:
29 September 2024
Abstract: This study looked at assessing the impact of solid wastes within Enugu metropolis on heavy metal concentrations and otherphysicochemical properties of soil samples from the site locations. Physicochemical analysis of the soil from the respectiverefusedump sites showed pH of 4.24, 6.3 and 5.87 respectively in the presence of the control experiment which maintained atpH of 7.6 throughout the experiment. Soil conductivity of the respective refuses ites within Enugu municipal showed a progressive increase of soil conductivity. Mineral contents were found in the following order: Cl>Ca>Mg>K>PO3. Heavy metals of Hg, As and Cd were found at below detectable limit range (BDL) in both the sampled soils from the respective refuse dumpsite andcontrol experiment. Cu, and Pb were significantly high in all the sampled soil from the dumpsites however, Cd was only detected in the soil sample from refuse dump III. Fe showed a progressive decrease across the dumpsites oil samples.
Abstract: This study looked at assessing the impact of solid wastes within Enugu metropolis on heavy metal concentrations and otherphysicochemical properties of soil samples from the site locations. Physicochemical analysis of the soil from the respectiverefusedump sites showed pH of 4.24, 6.3 and 5.87 respectively in the presence of the control experiment w...
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Research Article
Effects of Vermicompost and Blended NPSB Fertilizer on Major Physicochemical Properties of Soil and Economy of Maize Production at Bako, Central Ethiopia
Belay Teressa Ensermu*
,
Yibekal Alemayehu
Issue:
Volume 8, Issue 2, December 2024
Pages:
37-47
Received:
5 August 2024
Accepted:
5 September 2024
Published:
29 September 2024
Abstract: Integrated vermicompost and blended NPSB inorganic fertilizer are needed to improve the soil's fertility status, which can raise output and revenue. Thus, the purpose of the experiment was to ascertain how major physicochemical properties of the soil at Bako were affected by the application of blended NPSB fertilizer and vermicompost. Factorial combinations of four levels of vermicompost (0, 2, 4 and 6 tons ha-1) and four levels of NPSB blended inorganic fertilizer (0, 50, 100 and 150 kg ha-1) were laid out in Randomized Complete Block Design (RCBD) with three replications. The interaction of vermicompost and NPSB blended inorganic fertilizer had significant effects on ear diameter, grain yields, and harvest index and cob weight. The maximum grain yield (7503.7 kg ha-1) was obtained from application of blended NPSB fertilizer at the rate of 100 kg NPSB ha-1 and 4 tons ha-1 vermicompost rate with a net profit of 104850 birr and 6143% MRR with values to cost ratio of 3.47 birr profit per unit investment for midland maize production at Bako. Therefore, it can be said that the application of 100 kg NPSB ha-1 and 4 t vermicompost ha-1 was shown to be superior in terms of both grain yield and economic advantage, and it is therefore tentatively advised for use. To come to a definitive decision, the experiment needs to be repeated across a number of years, as this study was only conducted during one season at one site.
Abstract: Integrated vermicompost and blended NPSB inorganic fertilizer are needed to improve the soil's fertility status, which can raise output and revenue. Thus, the purpose of the experiment was to ascertain how major physicochemical properties of the soil at Bako were affected by the application of blended NPSB fertilizer and vermicompost. Factorial com...
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Research Article
Removal of Chromium (VI) from Aqueous Environment Using Modified Parkia Biglobosa (Locust Bean) Shell
Ayomide Caleb Durotoye,
Joe Emmanuel Akhagbeme*
Issue:
Volume 8, Issue 2, December 2024
Pages:
48-55
Received:
6 August 2024
Accepted:
11 September 2024
Published:
12 December 2024
Abstract: The different metal complexing ligands containing synthetic and natural adsorbents have been described in literature for the removal of heavy metal ions from aqueous solutions. However, the removal of Chromium (IV) ion using Parkia biglobosa is yet to be reported in literature. A new method was developed to obtain adsorption capacity using modified Parkia biglobosa shells as a natural Chromium (IV) heavy metal ion adsorbent from aqueous solution at a certain pH. Agricultural waste: Carob husks (a product derived from carob beans) were modified with HNO3 and citric acid, and their effectiveness on the removal of Cr (VI) from aqueous solutions was examined in a batch experiment. The core sizes used are 150 µm and 300 µm. The effects of different parameters such as pH, Cr (VI) concentration, adsorbent loading, and contact time were determined. The optimum pH values for the two dimensions were found to be 3 and 1, respectively. The contact time for maximum adsorption is 30 minutes. The Freundlich isotherm describes the equilibrium between liquid and solid phases. Parkia biglobosa can be said to be a good adsorbent for the removal of Chromium (VI) heavy metal ion from aqueous solutions depending on the pH of the solution.
Abstract: The different metal complexing ligands containing synthetic and natural adsorbents have been described in literature for the removal of heavy metal ions from aqueous solutions. However, the removal of Chromium (IV) ion using Parkia biglobosa is yet to be reported in literature. A new method was developed to obtain adsorption capacity using modified...
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