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Adsorption of Caffeine and Ciprofloxacin onto Pyrolitically Derived Water Hyacinth Biochar: Isothermal, Kinetic and Thermodynamic Studies
(2006-09)
In this work, the adsorptive features of water hyacinth (Eichhornia crassipes) derived biochar for sequestration of
ciprofloxacin and caffeine from aqueous solution is reported. The isothermal behaviour, adsorption kinetics, ...
Residue levels and discharge loads of antibiotics in wastewater treatment plants ( WWTPs), hospital lagoons, and rivers within Lake Victoria Basin, Kenya.
(Environmental Monitoring and Assessment, 2016-08)
The detection of antibiotics in water systems has instigated great environmental concern due to the toxicological effects associated with these compounds. Their discharge into the environment results from the ubiquity of ...
Insights on adsorption of carbamazepine onto iron oxide modified diatomaceous earth: Kinetics, isotherms, thermodynamics, and mechanisms
(Environmental Research, 2020-01)
To ameliorate adsorbent recovery by an external magnetic field, naturally occurring diatomaceous earth (DE) was modified with iron-oxide, characterized and applied for adsorption of carbamazepine (CBZ) from synthetic ...
Occurrence and Distribution of Per- and Polyfluoroalkyl Substances from Multi-Industry Sources to Water, Sediments and Plants along Nairobi River Basin, Kenya
(Environmental Research and Public Health, 2022-07-23)
Per- and polyfluoroalkyl substances (PFAS) are ever-present pollutants in the environment. They are persistent and bio-accumulative with deleterious health effects on biota. This study assesses the levels of PFAS in ...
Derivatization Reactions and Reagents for Gas Chromatography Analysis
(Advanced Gas Chromatography, 2012-03-21)
Derivatization reactions are meant to transform an analyte for detectability in Gas Chromatography (GC) or other instrumental analytical methods. Derivatization in GC analysis can be defined as a procedural technique that ...
Chemicals of Emerging Concern in Surface and Wastewater: A Perspective of Their Fate Within the Lake Victoria Catchment Area of KenyaAbstract
(2020-01)
Rapid technological advancement in the pharmaceuticals and chemical industry has led to synthesis of compounds used for health/personal care and industrial products in large amounts. These chemicals of emerging concern ...
Synthesis of mesoporous akaganeite functionalized maize cob biochar for adsorptive abatement of carbamazepine: Kinetics, isotherms, and thermodynamics
(Cleaner Materials journal homepage: www.journals.elsevier.com/cleaner-materials https://doi.org/10.1016/j.clema.2022.100104 Received 16 March 2022; Received in revised form 6 June 2022; Accepted 12 June 2022, 2022-06-17)
In this work, akaganeite (β-FeO(OH)) impregnated maize cob biochar (Fe-MCB) was prepared by direct hydrolysis, and its adsorptive potential was tested against aqueous solutions of carbamazepine (CBZ), an emerging contaminant. ...
The Influence of Filter Mud Compost and Tithonia diversifolia Leaves on the Dissipation of Diuron in Soils within the Nzoia River Drainage Basin, Kenya
(Bulletin of Environmental Contamination and Toxicology, 2012-05-22)
The aim of the study was to evaluate the environmental impact of filter mud compost and Tithonia diversifoila amendments on the dissipation of diuron in sugarcane cultivated soils. Filter mud compost is the by-product of ...
Endocrine disrupting chemicals in wastewater treatment plants in Kenya, East Africa: Concentrations, removal efficiency, mass loading rates and ecological impacts
(Environmental Research, 2023-09-20)
This study investigated the levels, mass loadings, removal efficiency, and associated ecotoxicological risks of selected endocrine disrupting chemicals (EDCs), namely, dibutylphthalate (DBP), diethylhexylphthalate (DEHP), ...