September 2018

Analysis of spatial variability in rainfall trends in Baringo County, Kenya

This study assessed actual rainfall trends and variability in Baringo County. The objective of the study was to determine whether there were variations in rainfall trends by agro ecological zones. Meteorological rainfall data for the period 1981 to 2010 from three distinct agro-ecological zones covering highland (LH 2), low land (IL 6) and midland (LM 5) was used. The choice of rainfall stations was informed by...

Author(s): Ednah Chemutai Koskei, Jackson John Kitetu and Charles Wambongo Recha  

September 2018

Healthcare waste management practices and risk perception of healthcare workers in private healthcare facilities in an urban community in Nigeria

Medical waste, despite the relatively small amounts in which it is generated, is a major concern for healthcare professionals and the government mainly because it poses risks to humans and the environment. Previous studies have shown that there is poor management of medical waste in developing nations, and Nigeria is not an exception. Some have surveyed the associated risks but few have studied the risk perceptions...

Author(s): Afolabi Olusegun Tope, Aluko Oludare Olufemi, Afolabi Bolade Kehinde and Fehintola Funmito Omolola  

September 2018

Seasonal variation of heavy metal speciation in soil and stream sediments from hospital waste dumpsite in Ilesa, Southwestern Nigeria

A speciation study of selected heavy metals in soil and stream sediments around a hospital waste dumpsite was investigated. Sequential extraction procedure was used to fractionate the metals into 4 fractions: Exchangeable and bound to carbonate, oxyhydroxide of Fe and Mn, organic matter and the residual fraction. Speciation analysis of Fe, Mn, Zn, Cu, Cd and Pb in soil revealed that a major portion of the metals were...

Author(s): Fakoya O. T., Oluyemi E. A., Olabanji I. O., Eludoyin A. O., Makinde O. W. and Oyinloye J. A.  

September 2018

The impacts of climate change and variability on crop farming systems in Semi-Arid Central Tanzania: The case of Manyoni District in Singida Region

This paper focuses on the impacts of climate change and variability on crop farming. The main objective of this paper is to assess the impacts of climate change and variability on crop farming systems in Manyoni district, Tanzania. This paper used mixed research design with both quantitative and qualitative research approaches. The research used different methods in collecting information concerning the impacts of...

Author(s): Jackson Sawe , Claude G. Mung’ong’o and Godfrey F. Kimaro

September 2018

Equilibrium, kinetic and thermodynamic studies of biosorption of zinc ions from industrial wastewater using derived composite biosorbents from walnut shell

The biosorption process of Zn (II) ions in industrial wastewater was investigated using derived composite biosorbents from walnut and snail shells. Composite adsorbents were produced by activating walnut shell carbon (WSC) with phosphoric acid to obtain acid-treated walnut shell carbon (AWSC) and WSC and AWSC were independently impregnated on chitosan to produce walnut shell carbon impregnated on chitosan (WSCC) and...

Author(s): Olafadehan, O. A., Akpo, O. Y., Enemuo, O., Amoo, K. O. and Abatan, O. G.