Research Articles [MEWES]: Recent submissions
Now showing items 21-40 of 474
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Tuning water chemistry for the recovery of greener products: pragmatic and sustainable approaches
(Royal Sociaty of Chemistry, 2023-02-17)The early techniques for recovery of bioactive metabolites involve conventional cold or hot solvent extraction.1 The choice is a function of the nature of the bioactive compound of interest.2 The adverse effect of organic ... -
Techno-economic evaluation of transesterification processes for biodiesel production from low quality non-edible feedstocks: Process design and simulation
(ELSEVIER, 2024-06-15)The global demand for fossil fuels has led to increased pollutant emissions and depleted fossil fuel resources. Biodiesel, a fossil fuel alternative, is widely produced via transesterification. This study assesses 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 ... -
Rare earth elements and uranium in Minjingu phosphate fertilizer products: Plant food for thought
(ELSEVIER, 2024-08-01)Minjingu phosphate ore is Tanzania's sole domestic supply of phosphorus (P). The ore contains medium to high concentrations of naturally occurring P2O5 (20–35 %) and relevant concentrations of uranium and rare earth elements ... -
Electrical power output potential of different solar photovoltaic systems in Tanzania
(International Journal of Renewable Energy Development, 2024-04-05)This study examines the photovoltaic (PV) energy output and levelized cost of energy (LCOE) in seven regions of Tanzania across five different tilt adjustments of 1 MW PV systems. The one-diode model equations and the ... -
A Review on Degradation Improvement of Sisal Fiber by Alkali and Pozzolana for Cement Composite Materials
(Taylor & Francis, 2024)Sisal fiber employment in concrete improves its post-crack strength, but sisal fiber degrades due to moisture and cement mineralization. Many researchers used alkaline and pozzolanic techniques to treat sisal fiber in ... -
Ecosystem metabolism in the deep and oligotrophic Lake Tanganyika
(Elsevier, 2024-06-24)This study investigated variability in ecosystem metabolism in the meromictic, oligotrophic, and deep Lake Tanganyika. A large buoy equipped with a weather station, oxygen and temperature sensors for every 10 m down to 102 ... -
Geochemistry of Potentially Toxic Elements in Soil and Sediments of a Tanzanian Small-Scale Gold Mining Area
(scientific research publishing, 2023-11-17)Small-scale gold mining is linked to significant environmental pollution by potentially toxic elements (PTEs). However, research on the pollution caused by such mining activities remains insufficient especially in ... -
Future Trade-Off for Water Resource Allocation: The Role of Land Cover/Land Use Change
(MDPI, 2024-02-02)Global croplands, pastures, and human settlements Have expanded in recent decades. This is accompanied by large increases in energy, water, and fertilizer consumption, along with considerable losses of biodiversity. In ... -
Future Trade-Off for Water Resource Allocation: The Role of Land Cover/Land Use Change
(MDPI, 2024-02-02)Global croplands, pastures, and human settlements Have expanded in recent decades. This is accompanied by large increases in energy, water, and fertilizer consumption, along with considerable losses of biodiversity. In ... -
Future Trade-Off for Water Resource Allocation: The Role of Land Cover/Land Use Change
(MDPI, 2024-02-02)Global croplands, pastures, and human settlements Have expanded in recent decades. This is accompanied by large increases in energy, water, and fertilizer consumption, along with considerable losses of biodiversity. In ... -
Effects of Raw and Different Calcined Bentonite on Durability and Mechanical Properties of Cement Composite Material2024
(Elsevier, 2024-02-22)Bentonite is a natural pozzolanic material mostly composed of SiO2 and employed in cementing materials for the reduction of cement consumption and CO2 emission besides improving perfor- mance of cement composite material ... -
The Assessment of Heavy Metals and Natural Radioactivity in the Phosphate Tailings at Minjingu Mines in Tanzania
(Journal of Ecological Engineering, 2024-04-12)Extraction and processing of the phosphate rocks has produced a massive amount of waste and posed a significant environmental concern. The majority of wastes generated in the fertiliser industry are overburden or waste ... -
High-frequency dynamics of pH, dissolved oxygen, and temperature in the coastal ecosystems of the Tanga- Pemba Seascape: implications for upwelling-enhanced ocean acidification and deoxygenation
(Frontiers, 2024-01-08)Ocean acidification, deoxygenation, and warming are three interconnected global change challenges caused by increased anthropogenic carbon emissions. These issues present substantial threats to marine organisms, ecosystems, ... -
Modelling and optimization of multiple replacement of supplementary cementitious materials for cement composite by response surface method.
(Elsevier Ltd., 2024-03-07)Supplementary cementitious materials are beneficial in improving performance and lessening the cement con- sumption with highly lessening CO2 emission. Many researchers used blast furnace slag, bentonite, and active limestone ... -
Thermal Performance and Technoeconomic Analysis of Solar-Assisted Heat Pump Dryer Integrated with Energy Storage Materials for Drying Cavendish Banana (Musa acuminata)
(Hindawi, 2024-02-02)This study examines a novel solar-assisted heat pump dryer integrated with a thermal energy storage system using soapstone as storage material. The dryer is investigated through experimental analysis across three operating ... -
Carbon dioxide removal using a novel adsorbent derived from calcined eggshell waste for biogas upgrading
(ELSEVIER, 2023-11-22)The existence of CO2 in biogas limits its utilization in engines by lowering its energy value and density. It contributes to global warming which is a major concern globally. The elimination of CO2 content from biogas will ... -
Effect of Natural Pozzolana on Physical and Mechanical Properties of Concrete
(Hindawi, 2024-02-13)Construction industries are rapidly growing, sacking high amounts of concrete which has a highly dense microstructure with excellent mechanical properties, more durable, and highly eco-friendly materials. Hence, many of ... -
Tanning capacity of Tessmannia burttii extracts: the potential eco-friendly tanning agents for the leather industry
(2021-05-15)In the present study, the tannins from stem and root barks of Tessmannia burttii Harms (Caesalpiniaceae), a plant species abundantly growing in Tanzania and other parts of Africa, were investigated for their suitability ... -
Facile biosynthesis of Ag–ZnO nanocomposites using Launaea cornuta leaf extract and their antimicrobial activity
(NM-AIST, 2013-11-14)The quest to synthesize safe, non-hazardous Ag–ZnO nanoomposites (NCs) with improved physical and chemical prop- erties has necessitated green synthesis approaches. In this research, Launaea cornuta leaf extract was ...