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Acta Chemica Malaysia

Acta Chemica Malaysia

ASPECTS OF SHALLOW GROUNDWATER QUALITY IN CALABAR SOUTH, CROSS RIVER STATE, NIGERIA

ABSTRACT

ASPECTS OF SHALLOW GROUNDWATER QUALITY IN CALABAR SOUTH, CROSS RIVER STATE, NIGERIA

Journal: Acta Chemica Malaysia (ACMY)
Author: Nwankwoala, H.O., Tariah, D.I., Udom, G.J.
Print ISSN : 2576-6732
Online ISSN : 2576-6724

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2018.20.25

This study aims at determining the quality for groundwater in the study area, for domestic and other uses. Water samples were collected in thirty plastic bottles of 1.5litres from fifteen functional boreholes in the study location. These samples were analyzed for physicochemical and bacteriological parameters using standard field and laboratory techniques. The dominant cations are Ca2+, K2+, Mg2+ and Na+ with mean composition of 27.20, 4.30, 89.50, and 33.00mg/l respectively. S042-, Cl-, P042- and N03-are dominant anions with respective mean values of 19.58, 3.22, 5.79 and 11.94mg/l. The highest recorded value for total hardness is 19.7mg/l revealed that the groundwater in the study location is soft, while concentration level of chloride (between 1.60 to 5.03 mg/l) with mean value 3.22mg/l shows absence of saltwater intrusion. Zinc and copper have values below WHO & NDWQ while for aluminum, less than 50% of the samples were above the standard. The iron concentrations at all location do not meet the WHO and NSDWQ standard for drinking water except for borehole location 11. The high iron should be treated with appropriate methods to reduce the concentration. The pH value should be treated to increase the pH to between 7 and 8 where this standard is not met. Further analysis of the groundwater chemistry to determine its suitability for agriculture or irrigation shows that the groundwater is excellently good for agriculture or irrigation purpose in the area. It is recommended that regular monitoring be carried out in the area.
Pages 20-25
Year 2018
Issue 1
Volume 2

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Acta Chemica Malaysia

AN INVESTIGATION ON THE PERFORMANCE OF COATINGS UNDER CORROSION-EROSION CONDITIONS: THE MECHANISMS OF EROSION, MICROSTRUCTURES, AND ADHESION

ABSTRACT

AN INVESTIGATION ON THE PERFORMANCE OF COATINGS UNDER CORROSION-EROSION CONDITIONS: THE MECHANISMS OF EROSION, MICROSTRUCTURES, AND ADHESION

Journal: Acta Chemica Malaysia (ACMY)
Author: Kamiyar Sharifian
Print ISSN : 2576-6732
Online ISSN : 2576-6724

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2018.16.19

An all-inclusive review related to the recently-conducted researches along with their findings and suggestions on the performance of coatings under wear conditions is represented in this study. Getting a perception of how coatings act under these conditions a crucial knowledge for is predicting the service life of the device, as well as extending it. Accordingly, a multi-aspect performance of coatings is discussed through considering numerous techniques applied by previous researchers. Corrosion-erosion interactions, and models of thermally- and plasma sprayed coatings, multilayered coatings, and a rise of currents resulted from erosion-corrosion are at the center of this study focus. Generally speaking, this review is a contribution to identifying interactions between corrosion and erosion which happen for numerous coating systems. At the end, it is concluded that the common issue among all the considering types of coatings is the need for high-quality coatings in order to eliminate corrosion impacts which, consequently, improves the service life of coatings.
Pages 16-19
Year 2018
Issue 1
Volume 2

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Acta Chemica Malaysia

ADSORPTION STUDIES OF PB2+ AND MN2+ IONS ON LOW-COST ADSORBENT: UNRIPE PLANTAIN (MUSA PARADISIACA) PEEL BIOMASS

ABSTRACT

ADSORPTION STUDIES OF PB2+ AND MN2+ IONS ON LOW-COST ADSORBENT: UNRIPE PLANTAIN (MUSA PARADISIACA) PEEL BIOMASS

Journal: Acta Chemica Malaysia (ACMY)
Author: Leizou, Kaywood Elijah, Muhammad Aqeel Ashraf
Print ISSN : 2576-6732
Online ISSN : 2576-6724

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

DOI: 10.26480/acmy.01.2018.11.15

The capacity of unripe plantain (Musa paradisiaca) peel biomass to remove heavy metals, Pb(II) and Mn(II) from aqueous solution of lead trioxonitrate (v), Pb (NO3)2 and potassium permanganate, (KMnO4) was investigated. Adsorption isotherms were determined by varying operating parameters such as effect of pH, initial concentration, adsorbent dose and contact time. Unripe plantain(Musa paradisiaca) peel was found to remove Pb and Mn ions in solution. Removal rate of Pb(II) and Mn(II) was found to increase steadily from pH 2 , however, Pb(II and Mn (II) removal decreases at pH 8. Langmuir and Freundlich models were applied to adsorption equilibrium data to find the best fitted amongst these models. Langmuir model type 1, with R2 = 0.9823 best fitted for Pb (II) adsorption data. The separation parameter, RL values were less than 1.0 i.e., 0.000903, 0.000451, 0.000225 and 0.000150 with corresponding initial concentrations of (50, 100, 200 and 300) mg/L respectively. This indicates that adsorption of Pb (II) ion on unripe plantain(Musa paradisiaca) peel biomass was favourable to Langmuir isotherm, while Freundlich model with R2 = 0.9585 best fitted Mn (II) ion with (n) value of 1.03, which was favourable adsorption. Thus, the results of these findings showed that unripe plantain (Musa paradisiaca) peel biomass could be effectively and efficiently utilized for the removal of Pb (II) and Mn (II) ions from aqueous solution.
Pages 11-15
Year 2018
Issue 1
Volume 2

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