Browsing Materials, Energy, Water and Environmental Sciences by Title
Now showing items 340-359 of 582
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Modification of municipal wastewater for improved biogas recovery
(IWA Publishing, 2020-06-24)The energy demand which is expected to increase more worldwide has sparked the interest of researchers to find sustainable and inexpensive sources of energy. This study aims to integrate energy recovering step into municipal ... -
Modification strategies to enhance electrosorption performance of activated carbon electrodes for capacitive deionization applications
(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 ... -
Molecular and ionic clusters existing in vapor over cesium chloride: Structure and thermodynamic properties
(Elsevier B.V., 2015-02-16)The properties of neutral molecular Cs2Cl2, Cs3Cl3 and Cs4Cl4 and the positively charged ionic clusters Cs4Cl3+ and Cs5Cl4+ existing in vapor over cesium chloride have been studied. The DFT method with B3LYP5 and B3P86 ... -
Molecular and Ionic Clusters of Rubidium Fluoride: Theoretical Study of Structure and Vibrational Spectra
(Science Publishing Group, 2015-10-19)In this study, the geometrical structure and vibrational spectra of the trimer molecule Rb3F3 and ionic clusters Rb2F + , RbF2 – , Rb3F2 + , and Rb2F3 – were studied by density functional theory (DFT) with hybrid ... -
A Molecular Investigation of the Solvent Influence on Inter- and Intra-Molecular Hydrogen Bond Interaction of Linamarin
(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, ... -
Molecular modification of dye constituents through grafting anchoring groups and pi-spacers: towards DSSCs application
(NM-AIST, 2021-06)Triphenylamine based dyes molecular modification by grafting anchoring groups and spacers was performed within computational framework aimed at potential materials for dye- sensitized solar cells (DSSCs) ... -
Morphological and Chemical Composition Characterization of Commercial Sepia Melanin
(Science and Education Publishing, 2015)Melanins are difficult to characterize because of their intractable chemical properties and the heterogeneity in their structural features. Melanin pigments, in fact, are composed of many different types of monomeric units ... -
Multi-variate regression analysis of lake level variability: A case of semi-closed, shallow rift valley lake in Northern Tanzania
(Elsevier, 2022)Lakes are very important for domestic use, commercial purposes, and ecosystem sustenance; nevertheless, studies on how different stressors influence water resources are limited, posing challenges in the planning and ... -
Mungongo Seeds Oil (Schinziophyton rautanenii) as a Potential Source of Bio-Diesel
(Scientific.Net, 2014-01)Biodiesel from mungongo seeds oil (Schinziophyton rautanenii) was investigated in the present study to determine its suitability for use as substitute of petro diesel. The fuel properties of Mungongo Oil Methyl ester (MOME) ... -
Natural Dye Sensitizer for Grӓtzel Cells: Sepia Melanin
(Science and Education Publishing, 2015)The efficiency of Grätzel cell can be further improved by the anchoring groups, such as COOH to be adsorbed onto the TiO2 surface with a large electronic coupling. Some of the most efficient sensitizers are synthetic dyes ... -
Natural dyes for solar cell application: uv-visible spectra and outdoor photovoltaic performance
(Research Journal in Engineering and Applied Sciences, 2014-09)Successful conversion of visible light into electrical output was achieved by using four locally available natural dyes as wide band gap semiconductor sensitizers in Dye-sensitized solar cells. Natural dyes extracted from ... -
Natural Groundwater Recharge Response to Climate Variability and Land Cover Change Perturbations in Basins with Contrasting Climate and Geology in Tanzania
(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, ... -
The need to enforce minimum environmental flow requirements in Tanzania to preserve estuaries: case study of mangrove-fringed Wami River estuary
(Elsevier, 2015-11-01)The importance of restoring and maintaining environmental flows for sustaining the ecosystem integrity of rivers has been recognized in policies and legal frameworks in many countries. However this is routinely not implemented ... -
Neither modern nor traditional: Farmer-led irrigation development in Kilimanjaro Region, Tanzania
(Elsevier B.V., 2019-04)The debate around what kind of irrigation, large- or small-scale, modern or traditional, best contributes to food security and rural development continues to shape irrigation policies and development in the Global South. ... -
Non-competitive and competitive detoxification of As (III) ions from single and binary biosorption systems and biosorbent regeneration
(Springer Nature Switzerland AG., 2023-01-14)The quantity of studies reporting on single-metal sorption systems is increasing every day while the elimination of heavy metals in binary and multisolute systems is seldom reported. Therefore, the biosorption and desorption ... -
A Novel and Facile Method to Characterize the Suitability of Metallic Iron for Water Treatment
(MDPI, 2019-11-23)Metallic iron (Fe0) materials have been industrially used for water treatment since the 1850s. There are still many fundamental challenges in affordably and reliably characterizing the Fe0 intrinsic reactivity. From the ... -
Novel use of portable gamma sensors to rapidly assess soil status and recovery in degraded East African agro-pastoral land
(Copernicus Publications, 2024-05-01)Soil resources in East African agro-pastoral lands are being rapidly depleted by erosion, threatening food, water and livelihood security. Here we explore the utility of innovation in portable gamma sensors to rapidly ... -
Numerical Analysis of Heat Exchanger for Spray-Assisted Low-Temperature Desalination System
(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 ... -
Nutrients’ distribution and their impact on Pangani River Basin’s ecosystem – Tanzania
(Taylor & Francis Group, 2017-05-05)Surface and groundwater from Pangani River Basin (PRB) were sampled in dry and wet seasons, analysed for dissolved organic and inorganic nutrients (N, P, Si and Urea). There was spatial and seasonal nutrients’ variability, ... -
Occurrence of nitrate in Tanzanian groundwater aquifers: A review
(Springer Open, 2015-03-06)More than 25 % of Tanzanian depends on groundwater as the main source of water for drinking, irrigation and industrial activities. The current trend of land use may lead to groundwater contamination and thus increasing ...