Browsing Materials, Energy, Water and Environmental Sciences by Author "Ijumba, Jasper"
Now showing items 1-5 of 5
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Effects of wastewater characteristics on fish quality from integrated wastewater treatment system and fish farming in Urban Areas, Tanzania
Mkali, Ahamdi; Ijumba, Jasper; Njau, Karoli (Scientific Research Publishing, 2014-09-10)Availability of suitable water is one of the most important limiting factors for development of sustainable aquaculture in the urban areas. As a consequence, the use of wastewater effluents for aquaculture is on the rise ... -
Environmental Contamination By Radionuclides And Heavy Metals Through The Application Of Phosphate RocksDuring Farming And Mathematical Modeling Of Their Impacts To The Ecosystem
Lema, Meserecordias; Ijumba, Jasper; Njau, Karoli; Ndakidemi, Patrick (nternational Journal of Engineering Research and General Science, 2014-07)Most of rock phosphates contain radioactive elements and heavy metals because theyoriginate from phosphate deposits. The application of these rock phosphates may result to the transfer of these dangerous materials into ... -
Heavy metals risk assessment of water and sediments collected from selected river tributaries of the Mara River in Tanzania
Nkinda, Mihayo; Rwiza, Mwemezi; Ijumba, Jasper; Njau, Karoli (Springer Nature, 2021-06-25)This study investigated the levels of Pb, Hg, Cr, Cd, and As in water and sediments from the tributaries of the Mara River, Tanzania. Pollution risk of water and sediments was investigated using seven indices and fve ... -
Quantitative assessment of metal contamination and associated pollution risk in sediments from the Mara River in Tanzania
Nkinda, Mihayo; Rwiza, Mwemezi; Ijumba, Jasper; Njau, Karoli (Springer Nature Switzerland AG., 2020-10-21)For most rivers in sub-Saharan Africa, information about pollution indices related to sediments is sparse. Sedimentological research of rivers that empty into Lake Victoria is highly patchy and wide apart. The present study ... -
Regeneration of fluoride-saturated bone char by means of wood ash and heat
Lukikoa, King; Machunda, Revocatus; Ijumba, Jasper (International Society for Fluoride Research, Inc, 2016-12-08)The regeneration of fluoride ion (F)-saturated bone char with different concentrations of wood ash in distilled water and by heating was investigated. Samples of 100 g of regenerated bone char were added into plastic ...