JE-VOLUME 02 ISSUE 01 JANUARY 2013


Home JE  Abs.& Indexing  Scope  Archives  Editorial Board  Call for Papers  Submit Papers



Volume 2 Issue 1, January 2013

Journal of Environment

ISSN

2049-8373

Publication Frequency

6 Issues per year

Pages

1-24

Publication History


Original Articles

The Production of Pozzolana Using High Calorific Waste

Moses Yartey Mensah, Emmanuel Agyekum Fofie and Felix Offei

Pages 1-4

 

Urban Gully Profiles and Patterns in South-Western Nigeria

A. Adediji1, A. and M.O. Ibitoye

Pages 5-13

Delineation of Groundwater Prospective Zones by Electrical Resistivity Method in Erode District, Tamilnadu, India

R. Kavidha and K. Elangovan

Pages 14-18

Concentration and Bioavailability of Iron in Some Selected Blood-Building Medicinal Plants in Southwest Nigeria

A.O. Majolagbe, V. Kuteyi, C.T. Onwordi and K.A. Yusuf

Pages 19-24


Title

The Production of Pozzolana Using High Calorific Waste

Abstract

Plastic waste such as polyethylene, with a calorific value of 46.2 kJ/g, has the potential to greatly supplement the energy requirements of clay pozzolana production. This was tested when 0.08 g of plastic was embedded in 8 g of clay before its calcination in a furnace. It was observed that the energy consumption of the furnace was reduced significantly with increasing plastic to clay ratio. The compressive strength of the pozzolana-OPC (Pozzolana-Ordinary Portland Cement) composite blocks was also comparatively higher. The use of plastic waste in the production of pozzolana can thus reduce the cost of building as well as reduce carbon dioxide emissions.  

Keywords

Pozzolana, Calorific Waste, Plastic Waste, Portland Cement

Title

Urban Gully Profiles and Patterns in South-Western Nigeria

Abstract

This study examined the profiles and patterns of urban gullies in South-Western Nigeria. This was done with a view to characterize gully development in an urban setting. Twenty towns were randomly selected  from Ondo and Ekiti States where thirty gully systems comprising forty 1st order and five 2nd order gullies were measured using Total Station (TS) and Global Positioning System (GPS) receivers for the transfer of coordinates (X, Y,Z values) to the gully catchment. Gully dimensions such as lengths, widths, depths, cross-sectional areas and surface areas of the study gullies were determined and used to generate Digital Elevation Models (DEMs). The result showed that gullies in the study area are predominantly 1st order type, most of which exhibited a “V”-shaped profile pattern and more than 50% of the gullies exhibited higher width values than depth which further showed that gullying process was more of lateral than vertical. Also, the result showed that the mean dimensions of gullies with respect to length width, depth, surface area and mean depth/width ratio are 1.31.44 + 90.70, 5.12 + 3.76, 1.66 + 1.20, 761.370 + 832.627 and 3.368+1.61, respectively.

Keywords

Gully Dimension, Urban Area, Pattern, South-Western Nigeria

Title

Delineation of Groundwater Prospective Zones by Electrical Resistivity Method in Erode District, Tamilnadu, India

Abstract

The occurrence, movement and control of groundwater, particularly in hard-rock areas, are governed by different factors such as topography, lithology, structures like fractures, faults and nature of weathering. Vertical Electrical Resistivity Soundings (VERS) were conducted in order to delineate groundwater potential zones in Erode district, Tamilnadu, India. Vertical Electrical Soundings (VES) were conducted at seventy five locations using the Wenner Configuration, covering the entire area except hilly region. Interpretations of VES results were used to generate a four layer configuration consists of the top soil, weathered zone, semi weathered or fractured zone and the bed rock. Resistivity results were correlated with the existing lithology. Based on Weighted Overlay of Weathered Layer and Depth to Basement Maps, Weighted Overlay of Lineament Density and Depth to Basement Maps and Weighted Overlay of Weathered Layer, Depth to Basement and Lineament Density Maps groundwater potential map has been prepared, in which good, moderate to good, moderate and poor zones are classified.

Keywords

Groundwater, Prospective Zones, Electrical Resistivity, Geophysical, Subsurface Strata

Title

Concentration and Bioavailability of Iron in Some Selected Blood-Building Medicinal Plants in South-West Nigeria

Abstract

The use of medicinal plants for blood-building in sub-Saharan Africa is a common practice. However, this practice is being challenged by the inadequate data on the bioavailability of both nutritional and toxic elements in the plants being used. In this study, the total iron  (Fe) concentration in five (5) medicinal plants parts used by local communities in South Western Nigeria to treat anaemia: Leaves ofSorghum bicolor (Poroporo Baba), Bark of Magnifera indica (Mango), Telfaria occidentalis (Ugwu), Basella alba (Amunututu) and leaves of Hibiscus sabdariffa(Zobo) were determined employing Flame Atomic Absorption Spectropho-tometry (FAAS). The level of iron observed in the plants studied, classifies them as high iron source going by WHO range of 70-200 mg/g. S. bicolor showed the highest concentration of 188.7 mg/g Fe while leaves of H. sabdariffa showed the least concentration of 69.7 mg/g Fe. Speciation patterns of Fe were also investigated using four-step Bureau Community of References’ (BCR) selective sequential extraction technique to evaluate the bioavailability of iron in the plants. The result showed that S. bicolor has the highest bioavailable Fe with a concentration of 121.8 mg/g. The bio available Fe in the plants is in the order S. bicolor > Barks ofM. indica >B. alba > T. occidentalis > leaves of H. sabdariffa.

Keywords

Speciation, Iron, Bioavailability, Blood-Building, Medicinal Plants, Spectrophoto-meter