Browsing Materials, Energy, Water and Environmental Sciences by Author "Machunda, Revocatus"
Now showing items 41-60 of 97
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Influence of Macrophyte Types towards Agrochemical Phytoremediation in a Tropical Environment
Lema, Emmy; Machunda, Revocatus; Njau, Karoli (International Journal of Engineering Research and General Science, 2014-09)The presence of agrochemicals waste water from agricultural fields poses major environmental and human health problems which may be solved by phytoremediation technologies. Phytoremediation is the use of plants to remediate ... -
The influence of stereochemistry of the active compounds on fluoride adsorption efficiency of the plant biomass
Mwakabona, Hezron; Machunda, Revocatus; Njau, Karoli (Science Publishing Group, 2014-08-20)Several studies have reported various defluoridation capabilities of plant biomasses. The resultant variations in fluoride removal capacities are associated with the presence of different types of active functional groups ... -
Invasive weeds with pesticidal properties as potential new crops
Mkindi, Angela; Mpumi, Nelson; Tembo, Yolice; Stevenson, Phillip; Ndakidemi, Patrick; Mtei, Kelvin; Machunda, Revocatus; Belmain, Steven (Elsevier, 2017-12-30)Plants with pesticidal properties have been investigated for decades as alternatives to synthetics, but only a handful have been commercialised and developed as non-food cash crops. One of the reasons why pesticidal plants ... -
Invasive weeds with pesticidal properties as potential new crops
Mkindi, Angela; Mpumi, Nelson; Tembo, Yolice; Stevenson, Phillip; Ndakidemi, Patrick; Mtei, Kelvin; Machunda, Revocatus; Belmain, Steven (Elsevier, 2017)Plants with pesticidal properties have been investigated for decades as alternatives to synthetics, but only a handful have been commercialised and developed as non-food cash crops. One of the reasons why pesticidal plants ... -
Investigation of Aloe lateritia Gel as Corrosion Inhibitor for Mild Steel in 2 M HNO3 and 1 M H2SO4 Media
Lucas, Paul; Machunda, Revocatus (Scientific Research, 2016-01-15)Corrsion inhibition of Aloe lateritia gel for Mild steel in 2 M HNO 3 and 1 M H 2 SO 4 solutions was in- vestigated by potentiodynamic polarization, Scanning electron microscopy (SEM) and Foutier transform infrared ... -
Investigation of functional performance of treatment systems for textile wastewater in selected textile industries in Tanzania
Oyetade, Joshua; Machunda, Revocatus; Hilonga, Askwar (IWA Publishing, 2023-02-01)Textile industrialization is an integral part of the economic growth in Tanzania. However, the corresponding wastewater from textile treat ment processes consists of dyes and auxiliaries associated with acute toxicological ... -
Land-Use and Land Cover Changes on the Slopes of Mount Meru-Tanzania
Kitalika, Aldo; Machunda, Revocatus; Komakech, Hans; Njau, Karoli (Current World Environment, 2018-12)Environmental transitions analysis was done in part of the land on the slopes of the foothills of Mount Meru in thirty (30) years’ time from 1986 to 2016 using satellite-derived land use/cover maps and a Cellular Automata ... -
Life cycle analysis of potential municipal solid wastes management scenarios in Tanzania: the case of Arusha City
Richard, Edwin; Hilonga, Askwar; Machunda, Revocatus; Njau, Karoli (Springer Nature, 2021-01-07)The municipal solid wastes (MSW) management technologies in most cities of developing countries pose a continuous risk of contaminating the environment and affecting human health adversely; often because MSW technologies ... -
Modification strategies to enhance electrosorption performance of activated carbon electrodes for capacitive deionization applications
Sufiani, Omari; Elisadiki, Joyce; Machunda, Revocatus; Jande, Yusufu (Elsevier, 2019-09-01)Capacitive deionization (CDI) is the competitive technology for water desalination which appears to become an alternative to conventional methods such as ion exchange resins, reverse osmosis, and electrodeionization. Variety ... -
A Molecular Investigation of the Solvent Influence on Inter- and Intra-Molecular Hydrogen Bond Interaction of Linamarin
Paul, Lucas; Deogratias, Geradius; Shadrack, Daniel; Mudogo, Celestin; Mtei, Kelvin; Machunda, Revocatus; Paluch, Andrew; Ntie‐Kang, Fidele (MDPI, 2022-02-11)Linamarin has been reported to have anticancer activities; however, its extraction and isolation using different solvents yield a low amount. Therefore, understanding the physical prop‐ erties, such as solvents’ solubility, ... -
Natural Groundwater Recharge Response to Climate Variability and Land Cover Change Perturbations in Basins with Contrasting Climate and Geology in Tanzania
Mussa, Kassim; Mjemah, Ibrahimu; Machunda, Revocatus (MDPI, 2021-08-30)The response of aquifers with contrasting climate and geology to climate and land cover change perturbations through natural groundwater recharge remains inadequately understood. In Tanzania and elsewhere in the world, ... -
Numerical Analysis of Heat Exchanger for Spray-Assisted Low-Temperature Desalination System
Muhunzi, Amour; Jande, Yusuph; Machunda, Revocatus (Hindawi, 2020-12-12)A numerical study for heat exchanger for spray-assisted low-temperature desalination system is presented for an existing low-temperature desalination unit at Arusha Technical College. This is aimed at recognizing the effect ... -
Open-Source Software Application for Hydrogeological Delineation of Potential Groundwater Recharge Zones in the Singida Semi-Arid, Fractured Aquifer, Central Tanzania
Mussa, Kassim Ramadhani; Mjemah, Ibrahimu Chikira; Machunda, Revocatus (MDPI, 2020-05-17)This study attempted to delineate and map potential groundwater recharge zones of the Singida, semi-arid, fractured crystalline basement aquifer using open source remote sensing and GIS software. Various thematic maps ... -
Optimization of Sedimentation Tank Coupled with Inclined Plate Settlers as a Pre-treatment for High Turbidity Water
Chintokoma, Gilbert; Machunda, Revocatus; Njau, Karoli (International Institute for Science, Technology and Education(IISTE), 2015)Access to clean and safe drinking water is a challenge in most rural areas of Tanzania. Unsafe drinking water is a major cause of water-related diseases that predominantly affect people living in developing countries. In ... -
Performance evaluation of in situ Fenton-mediated photocatalysis of industrial dye effluent with enhanced TiO2 nanoparticle
Oyetade, Joshua; Hilonga, Askwar; Machunda, Revocatus (IWA Publishing, 2023-05-17)Effluents resulting from the frequent use of industrial azo dyes in textile operations have posed great toxicological impacts on man and the environment. The limitations of conventional treatment infrastructure necessitate ... -
Performance of inclined plates settler integrated with constructed wetland for high turbidity water treatment
Kasenene, Atwebembela; Machunda, Revocatus; Njau, Karoli (IWA Publishing, 2021)The purpose of this study was to investigate and demonstrate cost-effective treatment technologies for high turbid waters, used for domestic purposes in rural areas of Tanzania where conventional community water treatment ... -
Performance of Sweet Potato’s Leaf-Derived Activated Carbon for Hydrogen Sulphide Removal from Biogas
Juma, Geni; Machunda, Revocatus; Pogrebnaya, Tatiana (Hindawi, 2020-03-01)In this study, sweet potato leaf activated carbon (SpLAC) was prepared by the chemical activation method using KOH and applied as an adsorbent for H2S removal from biogas. The study focused on the understanding of the ... -
Performance of water filters towards the removal of selected pollutants in Arusha, Tanzania.
Kiagho, Beatrice; Machunda, Revocatus; Hilonga, Askwar; Njau, Karoli (University of Dar es Salaam, 2016)This paper presents the findings of a study carried out to investigate the efficiency of selected common water filters in the removal of Escherichia coli, organic matter and fluoride. Additionally, the Total Suspended ... -
The pharmaceutical disposal practices and environmental contamination: A review in East African countries
Karungamye, Petro; Rugaika, Anita; Mtei, Kelvin; Machunda, Revocatus (Elsevier, 2022-11-24)The aim of this review was to analyze the available information on methods used in disposing of unused or expired pharmaceuticals in East African countries and the possibility of environmental contamination. There are some ... -
Photocatalytic degradation of azo dyes in textile wastewater by Polyaniline composite catalyst-a review
Oyetade, Joshua; Machunda, Revocatus; Hilonga, Askwar (Elsevier B.V., 2022-09)Azo dyes in industrial textile and dye effluent (5–30%) have become irresistibly recalcitrant and toxic to both treatments and the environment respectively. Global concerns about the persistent nature of these dyes and the ...