Browsing Research Articles [MEWES] by Author "Pogrebnaya, Tatiana"
Now showing items 1-7 of 7
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Cryptogamic Packed Biofilter as Potential Adsorbent for CO2, NH3, and H2S Impurities from Biogas
Temba, Norbert W.; Kivevele, Thomas; Pogrebnaya, Tatiana (Hindawi, 2020-07-07)The presence of elevated concentrations of carbon dioxide, hydrogen sulfide, ammonia, and trace impurities in biogas affect its caloric value as well as causes corrosion and is extremely toxic. There are various methods ... -
Effect of Antioxidants Extracted from Clove Wastes and Babul Tree Barks on the Oxidation Stability of Biodiesel made from Water Hyacinth of Lake Victoria Origin
Waweru, Emmanuel J.; Pogrebnaya, Tatiana; Kivevele, Thomas T. (Springer Nature Switzerland AG, 2019-11-04)Biodiesel from water hyacinth has shown to have poor oxidative stability due to the presence of significant amounts of unsaturated fatty acids. Most studies have been using synthetic antioxidants to improve oxidation ... -
Electrical power output potential of different solar photovoltaic systems in Tanzania
Warburga, Christopher; Pogrebnaya, Tatiana; Kivevele, Thomas (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 ... -
Lawsone isomers, lawsone ether and bilawsone for dye-sensitized solar cells applications: DFT and UV-Vis studies.
Makoye, Amosi; Pogrebnoi, Alexander; Pogrebnaya, Tatiana (Elsevier Inc., 2020-01-01)Structural and optoelectronic properties of lawsone (L), lawsone ether (LE) and bilawsone (BL) were studied theoretically using the DFT and time-dependent DFT methods with hybrid functional B3LYP5 and 6-311G (2d,p) basis ... -
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 ... -
Theoretical Design of Complex Molecule via Combination of Natural Lawsone and Synthetic Indoline D131 Dyes for Dye Sensitized Solar Cells Application
Madili, Nyanda; Pogrebnoi, Alexander; Pogrebnaya, Tatiana (Scientific Research Publishing Inc., 2018-10-31)The dye sensitized solar cells (DSSCs) have been extensively studied due to their low production cost and simple fabrication process. Dye co-sensitization broadens the absorption spectrum of the sensitizer; thus enhances ... -
Tuning optoelectronic properties of triphenylamine based dyes through variation of pi-conjugated units and anchoring groups: A DFT/TD-DFT investigation.
Deogratias, Geradius; Seriani, Nicola; Pogrebnaya, Tatiana; Pogrebnoi, Alexander (Elsevier Inc., 2020-01-01)Dye-sensitized solar cells (DSSCs) have attracted widespread attention due to their unique features. In the present work, molecular engineered triphenylamine based dyes featuring donor-bridge-acceptor architecture have ...