African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 1123

Table of Content: May 2015; 9(5)

May 2015

Effect of gas recirculation intensity and various temperatures on hydrogenotrophic methanogens activity in chemostat fermentation using H2/CO2 as substrate

The influence of mixing H2/CO2 gas recirculation on the performance of hydrogenotrophic methanogens activity in continuous culture was studied at 37 and 20°C. Chemostat fermentation was used at laboratory scale to determine the bioconversion rate of H2/CO2 mixture gas to methane under different mixing rates. On comparison with continuous mixing, intermittent mixing at 45 min/h provided a better methane production,...

Author(s): Olga Yolande Ako and Yutaka Kitamura

May 2015

Gumbel Weibull distribution function for Sahel precipitation modeling and predicting: Case of Mali

Climate change, trend of precipitation variation is greatly affected by Sahel countries economy in general and Mali in particular, which increased the social instability in recent years. In this paper, we proposed Gumbel Weibull distribution function for modeling and predicting the precipitation of Mali. The methodology is composed of two steps: parameters computations and estimations. We computed the parameters using...

Author(s): Kya Abraham Berthe, Abdramane B and Setephan Reichenbach

May 2015

Assessment of effluents discharged from textiles industries in selected villages in Kaduna State, Nigeria

A major serious source of pollution is the industrial effluent discharge by the process industries into the water bodies. Industrial effluent consists of water with varieties of potentially harmful substances. The study analysed the public health effects of effluents discharged from Kaduna textile industry into the waters of river Kaduna. Physicochemical qualities of effluents at the downstream were assessed. Parameters...

Author(s): Mohammed Ahmed Emigilati, Ibrahim Ishiaku, Badaru Yahaya Usman, Garba Inuwa Kuta and Kudu Dangana

May 2015

Influence of lokpa cattle market wastes on agricultural soil quality

This paper examined the influence of Lokpa cattle market waste on soil properties. Soil samples were collected from the Central, 3 and 6 m Northwards, Southwards, Eastwards and Westwards of Lokpa cattle market, Umuneochi Local Government Area of Abia State, Nigeria at a depth of 0 to 25 cm (Sample A) and 26 to 50 cm (Sample B) from each spot while the control samples were collected from an unimpacted area devoid of...

Author(s): Chinyere G. C, Osuocha K. U. and Imo Chinedu

May 2015

Assessment of microbiological quality of drinking water treated with chlorine in the Gwalior city of Madhya Pradesh, India

The quality of drinking water at the point of delivery to the consumer is crucial in safeguarding consumer’s health. The current study was undertaken to assess the changes in residual chlorine content with distance in water distribution system in Gwalior city of Madhya Pradesh and assess its relation with the occurrence of total and faecal coliforms. Water samples were collected from the exit point of the...

Author(s): Makhmoor Rather Ahmad, Ahanger Faroz Ahmad and Sharma Harendra K

May 2015

Assessment of physico-chemical and bacteriological quality of drinking water at sources and household in Adama Town, Oromia Regional State, Ethiopia

Water quality is a critical factor affecting human health and welfare. This study aimed at examining the physico-chemical and bacteriological quality of drinking water in Adama town. A total of 107 triplicate water samples were examined; 1 from inlet point (raw water), 1 from outlet (the water after treatment, 1 from reservoir (treated water stored), 52 from pipe water and 52 from systematically selected...

Author(s): Temesgen Eliku and Hameed Sulaiman

May 2015

Evaluation of selected wetland plants for removal of chromium from tannery wastewater in constructed wetlands, Ethiopia

Wastewater from leather processing industries is very complex and leads to water pollution if discharged untreated, especially due to its high organic loading and chromium content. In this study, the phytoremediation efficiency of selected wetland plant species in subsurface flow (SSF) constructed wetlands receiving tannery wastewater was investigated. Four pilot units were vegetated with Cyprus alternifolius, Typha...

Author(s): Tadesse Alemu Terfie and Seyoum Leta Asfaw

May 2015

Local blacksmiths’s activity in the west region of Cameroon and their contribution to the development of micro hydroelectric power plants in that region

As a result of the nature of pollutant and exhaustible of fossils energies, developed countries have made use of renewable energy sources to make effective their energy systems. To stow on that vision in Cameroon, the promotion of micro-hydroelectric powers plants (MHPP) is a priority and any contribution to its ease is beneficial. The objective of this study is to characterize some main forges in the west region of...

Author(s): Kengne Signe Elie B., O. Hamandjoda, Tekounegning and Nganhou. J.

May 2015

Accessibility and utilization of mobile phones for governance of water resources in the Lake Victoria Basin: Constraints and opportunities in Tanzania

Mobile phones are the world’s fastest growing technologies in terms of coverage and adoption. This trend makes them a desirable information and communication technology (ICT) platform for addressing the striking challenges of water resources governance at all levels. Some of remarkable challenges in Lake Victoria Basin (LVB) that have negative impact on the water resources are rapid population growth, unfavorable...

Author(s): H. J. Mongi, A. N. Mvuma, S. Kucel, A. J. Tenge and M. Gabriel

May 2015

The Niger Delta wetland ecosystem: What threatens it and why should we protect it?

The Niger Delta wetland ecosystem is of high economic importance to the local dwellers and the nation in general. The region is rich in both aquatic and terrestrial biodiversity and serves as a main source of livelihood for rural dwellers as well as stabilizing the ecosystem. Tremendous changes have occurred recently in the Niger Delta wetlands due to anthropogenic activities, thus raising awareness on the need for...

Author(s): Chidumeje Ndidi Patience Okonkwo, Lalit Kumar and Subhashni Taylor

May 2015

Reinventing new systems of crop production in time of agro-ecological change in Burkina Faso

During the last decade, great floods, destructive winds, desertification and grain shortages in Burkina Faso have spotlighted agro-ecological change as a crucial challenge for achieving sustainable development in eastern part of the country especially in the Gourma region. In fact, the new agro-ecological order has reshaped and transformed geographical representations, land tenure and norms and techniques of crops...

Author(s): Gabin Korbéogo

May 2015

Characterization of biosurfactant produced from submerged fermentation of fruits bagasse of yellow cashew (Anacardium occidentale) using Pseudomonas aeruginosa

Biosurfactants are amphiphilic compounds produced by bacteria and fungi to reduce surface and interfacial tension. This work was designed to produce biosurfactants from the fermentation of submerge cashew bagasse (Anacardium occidentale) using a microorganism Pseudomonas aeruginosa. The proximate components of the biosurfactant was determined. Results show that yellow cashew fruit bagasse contains lipid (11.34 ±...

Author(s): Iroha Okechukwu K., Njoku Obi U., Ogugua Victor N. and Okpashi Victor E.

May 2015

Challenges of adoption of urine-diversion dry toilets technology as sanitation option by coastal communities of Mkuranga District in Tanzania

Mkuranga District council in collaboration with African Medical and Research Foundation (AMREF) introduced ecological sanitation option using urine-diversion dry toilets (UDDT) to the community between 2007 and 2009, which was later declared unsuccessful. This study analyzed factors that hindered the uptake of UDDT by the community by assessing the project implementation strategy. Techniques used for the study were...

Author(s): Aloyce W. Mayo and Twaha Mubarak

May 2015

Prospects of using whole rice husk for the production of dense and hollow bricks

One of the main reasons for the continued increase in the deficit of affordable housing in Nigeria is the high cost of brick made from sand and ordinary Portland cement (OPC). Finding a replacement for cement to assure sustainability is crucial as the raw materials used in making cements which are naturally occurring are depleting. Rice husk was milled and sieved to reduce the size to 0.020 mm. The moisture content of...

Author(s): Chukwudebelu, J. A., Igwe, C. C. and Madukasi, E. I.

May 2015

Lead uptake of water plants in water stream at Kiteezi landfill site, Kampala (Uganda)

The purpose of this study was twofold: (i) to quantify the lead (Pb) uptake by two water plants reeds (Phragmites australis) and papyrus (Cyperus papyrus) in water stream at Kiteezi landfill site, Kampala (Uganda) and (ii) to compare the two species in Pb uptake downstream. As such, leachate samples were collected at the inlet and outlet of the waste water treatment plant (WWTP) at Kiteezi landfill site. A total of 6...

Author(s): Dana Jill Mugisa, Noble Banadda, Nicholas Kiggundu and R. Asuman