Materials, Energy, Water and Environmental Sciences: Recent submissions
Now showing items 421-440 of 579
-
Energy minimization in monoethanolamine‐based CO2 capture using capacitive deionization
(John Wiley & Sons, Ltd., 2014-01-07)Post‐combustion CO2 capture using monoethanolamine (MEA) is a mature technology; however, the high energy input requirements for solvent regeneration are still a challenge for MEA‐based CO2 capture. In this paper, a novel ... -
Hybrid CV-CC operation of capacitive deionization in comparison with constant current and constant voltage
(Taylor & Francis Online, 2016-02-24)Capacitive deionization (CDI) is a technique used to desalinate saline water by means of electrical potential applied to the electrode along both sides of a spacer channel through which water flows. CDI operates either at ... -
Fish Swim Bladder-Derived Porous Carbon for Defluoridation at Potable Water pH
(Scientific Research Publishing Inc, 2016-10-25)The levels of fluoride in various ground water sources in East Africa are above the World Health Organization upper limit of 1.5 mg/L. Research on diverse defluoridation technologies has proven that adsorption stands out ... -
Status of Biomass Derived Carbon Materials for Supercapacitor Application
(Hindawi, 2017-01-31)Environmental concerns and energy security uncertainties associated with fossil fuels have driven the world to shift to renewable energy sources. However, most renewable energy sources with exception of hydropower are ... -
Biogas-slurry derived mesoporous carbon for supercapacitor applications
(Elsevier Ltd., 2017-09)This study reports on the transformation of biogas slurry into mesoporous carbon for supercapacitor electrodes. Pore structures have been modified by altering activation time, temperature and KOH/carbon mass ratio. The ... -
Crustacean derived calcium phosphate systems: Application in defluoridation of drinking water in East African rift valley
(Elsevier B.V., 2018-04-05)Calcium phosphate adsorbents, derived from prawns and crabs shell biomass wastes have been developed using wet chemistry and low temperature treatment. The adsorbents were characterized by X-ray diffractometry and Fourier ... -
Performance optimization of integrated electrochemical capacitive deionization and reverse electrodialysis model through a series pass desorption process
(Elsevier, 2017-06-15)A capacitive deionization (CDI) system is one of the emerging desalination technologies used to purify brackish water. It is an electrochemical technology that uses electrically charged porous electrodes to remove salt ... -
Fish bladder-based activated carbon/Co3O4/TiO2 composite electrodes for supercapacitors
(Elsevier B.V., 2019-06-15)Cobalt oxide/titanium dioxide/activated carbon (Co3O4/TiO2/Ac) composite was synthesized using simple sol-gel method before annealing at 300 °C. Fish bladder derived porous carbon used for the composite was synthesized by ... -
Biomass-based carbon electrode materials for capacitive deionization: a review
(Springer Nature Switzerland AG., 2019-06-27)Capacitive deionization (CDI) is a promising water purification technology which works by removing salt ions or charged species from aqueous solutions. Currently, most of the research on CDI focuses on the desalination of ... -
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 ... -
Preparation and Characterization of Biogenic Chitosan-Hydroxyapatite Composite: Application in Defluoridation
(Cambridge University Press, 2018-02-20)In Northern Tanzania, high levels of fluoride in community drinking water supply is recognized as one of the major public health concern, the problem is further ameliorated by presence Escherichia coli and fecal coliform ... -
Methylammonium tin iodide perovskite: structural, electronic and thermodynamic properties by a DFT study with different exchange–correlation functionals
(Springer Nature Switzerland AG., 2020-03-20)Lead-free perovskites have drawn much attention of researchers in the field of electronics and photovoltaics due to the toxicity issue of the lead halide perovskites. The methylammonium tin iodide CH3NH3SnI3 amongst others ... -
Indigenous knowledge on development and management of shallow dug wells of Dodoma Municipality in Tanzania
(Springer Nature Switzerland AG., 2018-04-19)Dodoma city, central Tanzania, seats in a semi-arid region of East Africa with limited rains and surface water resources. Consequently, the area largely depends on shallow and deep aquifers for its freshwater needs. Owing ... -
Physicochemical and Microbiological Variations in Rivers on the Foothills of Mount Meru, Tanzania.
(International Journal of Scientific & Engineering Research, 2017-09-09)Little is known on the physicochemical and microbiological changes in Nduruma, Tengeru and Maji ya Chai Rivers. Such important variations were studied during wet and dry seasons in 2015. Water samples from various ... -
Levels of community participation and satisfaction with decentralized wildlife management in Idodi-Pawaga Wildlife Management Area, Tanzania
(Taylor & Francis online, 2017-09-14)Participatory approaches to conservation are viewed as a plausible alternative to the old ‘fortress conservation’ approach. The design and implementation of these approaches in developing countries have tended to embrace ... -
Origin and mechanisms of high salinity in Hombolo Dam and groundwater in Dodoma municipality Tanzania, revealed
(Springer Nature Switzerland AG., 2017-05-12)The Hombolo dam (HD), in central Tanzania, is a shallow reservoir characterized by high salinity that limits its use for human activities. The origin of the salinity, mechanisms of reaching and concentrating in the dam ... -
African farmer-led irrigation development: re-framing agricultural policy and investment?
(Taylor & Francis online, 2016-11-09)The past decade has witnessed an intensifying focus on the development of irrigation in sub-Saharan Africa. It follows a 20-year hiatus in the wake of disappointing irrigation performance during the 1970s and 1980s. ... -
Statistics in Climate Variability, Dry Spells, and Implications for Local Livelihoods in Semiarid Regions of Tanzania: The Way Forward
(Springer Nature Switzerland AG., 2016-10-13)The Dodoma municipality, a semiarid region of Tanzania, is characterized by limited rains, lack of surface water sources, and a high frequency of extreme climate events, particularly droughts and floods. These disadvantaged ... -
Decentralized Environmental Governance: A reflection on its role in shaping Wildlife Management Areas in Tanzania
(Tropical Conservation Science, 2015-12-01)Decentralised environmental governance has become a catchy solution to environmental problems caused by the failure of traditional centralised environmental governance. It promises to transfer power and authority, improve ... -
Building Bridges between the Sciences and the Arts of Water Co-operation through Collective Action – Reflections
(Elsevier, 2014)This reflection article highlights some of the science that underpins our understanding of cooperation over shared water resources. Power dynamics, hegemony, negotiation theory, social psychology and justice, international ...