Browsing by Author "Kowenje, Chrispin"
Now showing items 1-6 of 6
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A comparison of adsorption equilibrium, kinetics and thermodynamics of aqueous phase clomazone between faujasite X and a natural zeolite from Kenya
Shikuku, Victor O; Donato, Filipe F; Kowenje, Chrispin; Zanella, Renato; Prestes, Osmar D (The South African Chemical Institute, 2015)In this study, a well-studied synthetic faujasite X (FAU-X) zeolite and a recently discovered natural zeolite material from Kenya (NZ-K) were compared for their efficiency in removal of clomazone, a herbicide and water ... -
Efficient adsorption of lead (II) and copper (II) from aqueous phase using oxidized multiwalled carbon nanotubes/polypyrrole composite
Nyairo, Wilfrida N; Eker, Yasin R; Kowenje, Chrispin; Akin, Ilker; Bingol, Haluk; Tor, Ali; Ongeri, David M (Taylor & Francis, 2018-01-12)Polypyrrole coated oxidized multiwalled carbon nanotubes (oMWCNT/Ppy) were applied to determine the adsorption characteristics of Pb(II) and Cu(II) from their aqueous solutions. Structural and morphological characterization ... -
Efficient removal of lead (II) ions from aqueous solutions using methyl-β-cyclodextrin modified graphene oxide
Nyairo, Wilfrida N; Eker, Yasin R; Kowenje, Chrispin; Zor, Erhan; Bingol, Haluk; Tor, Ali; Ongeri, David M (Springer International Publishing, 2017-11-01)Graphene oxide (GO) and graphene oxide modified with methyl-β-cyclodextrin denoted as GO-mβCD were prepared and applied as adsorbents to determine the adsorption characteristics of Pb(II) from aqueous solutions. The ... -
Evaluation of the Effectiveness of Traditional Rastrineobola argentea Sundrying Process Practiced along the Shores of Lake Victoria, Kenya
Kowenje, Chrispin; Onyango, David M; Nyirima, Job; Sote, Tonny B; Sifuna, Anthony W; Namuyenga, Nelson; Otuya, Petronila; Owigar, Rosemary; Oduor, Andrew; Lung’ayia, Henry (Scientific & Academic Publishing, 2015-01-26)Quality of fish depends on its texture, odour and hinges on duration of harvesting and processing. Traditional sun-drying free-to air of Rastrineobola argentia who’s effectiveness and efficiency to reduce moisture content ... -
Inorganic Chenistry 1
Kowenje, Chrispin (2018-03-10)Introductory Chemistry 1 undepins the concepts of matter, measurements, structure and periodicity of the atom, Molecules and compounds, and their chemical reactions. This study builds on the aforementioned concepts by being ... -
Synthesis of hydrophobic siliceous ferrierite by using pyridine and sodium fluoride
Kowenje, Chrispin; Kamimura, Yoshihiro; Yamanaka, Kenji; Itabashi, Keiji; Endo, Akira; Okubo, Tatsuya (Elsevier, 2013-11-15)We report for the first time, the successful synthesis of siliceous ferrierites with SiO2/Al2O3 = 138.8–324 by the hydrothermal treatment of aluminosilicate gel with the introduction of pyridine and easy-to-handle sodium ...