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View article: Heavy Metal Contamination in Water, Sediment, and Fish from Lake Tinike, Eastern Ethiopia: Ecological and Public Health Implications
Heavy Metal Contamination in Water, Sediment, and Fish from Lake Tinike, Eastern Ethiopia: Ecological and Public Health Implications Open
A study was conducted to assess concentrations of selected heavy metals in water, sediment, and fish, and to determine the physicochemical parameters of water and sediment from Lake Tinike during dry and wet seasons. A laboratory-based cro…
View article: Contamination of Heavy Metals and Physicochemical Parameters of Water and Sediment in Haramaya Lake, Ethiopia
Contamination of Heavy Metals and Physicochemical Parameters of Water and Sediment in Haramaya Lake, Ethiopia Open
To evaluate specific heavy metal contamination and physicochemical parameters in water and sediment samples, across sectional laboratory investigation was carried out. A flame atomic absorption spectrophotometer was used to analyze the hea…
View article: Synthesis and characterization of zeolite-supported CdS/TiO2/Ag2CO3 ternary composite for Photodegradation of methyl Orange
Synthesis and characterization of zeolite-supported CdS/TiO2/Ag2CO3 ternary composite for Photodegradation of methyl Orange Open
Co-precipitation was used to produce single, binary, and ternary systems of CdS/TiO2:Ag2CO3 with varied molar ratios (1:2, 1:3, and 1:4). The impregnation method was also used to fabricate a zeolite-supported CdS/TiO2/Ag2CO3 (ZST) composit…
View article: Enhanced photocatalytic performance of ternary g-C3N4/UiO-66/Ag3VO4 composite for methylene blue degradation under visible light irradiation
Enhanced photocatalytic performance of ternary g-C3N4/UiO-66/Ag3VO4 composite for methylene blue degradation under visible light irradiation Open
A novel Ag3VO4/UiO-66/g-C3N4-based photocatalyst was synthesized using the solvothermal approach and characterized using XRD, SEM, FTIR, PL, and UV–Vis DRS. The photodegradation capacity of each component was tested using aqueous solutions…
View article: Seasonal natural organic matter removal and implications for disinfection by-product formation at the Koka water treatment plant: Upper Awash, Ethiopia
Seasonal natural organic matter removal and implications for disinfection by-product formation at the Koka water treatment plant: Upper Awash, Ethiopia Open
This study evaluated the seasonal performance of the Koka water treatment plant in removing natural organic matter (NOM) and the implications for disinfection by-product (DBP) formation potential. Raw and treated water samples were collect…
View article: Dual fluorescence emission of p-N,N-(dialkylamino) benzyl-idenemalononitrile and related systems: Evidence for direct excitation of ground state twisted intramolecular charge transfer (TICT) conformer
Dual fluorescence emission of p-N,N-(dialkylamino) benzyl-idenemalononitrile and related systems: Evidence for direct excitation of ground state twisted intramolecular charge transfer (TICT) conformer Open
The mechanism of dual fluorescence emission of a fluorophore is controversial ever since its first observation in p-N,N-dimethylaminobenzonitrile (DMABN). Excited state twisted intramolecular charge transfer (TICT) and planarized intramole…
View article: A stable electrochemical sensor for the detection of ascorbic acid based on Fe3O4/ZrO2 nano composite modified carbon paste electrode
A stable electrochemical sensor for the detection of ascorbic acid based on Fe3O4/ZrO2 nano composite modified carbon paste electrode Open
Magnetite and zirconium oxide (Fe3O4/ZrO2) nano composite, Fe3O4 and ZrO2 nanoparticles were synthesized by a chemical co-precipitation method and hydrothermal decomposition of zirconium metal organic framework, respectively. The structura…
View article: Polyaniline-supported g-C3N4/ZnO/Ag2CrO4 composite for photodegradation of methylene blue under visible light irradiation
Polyaniline-supported g-C3N4/ZnO/Ag2CrO4 composite for photodegradation of methylene blue under visible light irradiation Open
Organic dyes are a major source of environmental pollution from different industries. To remove these recalcitrant, a novel ternary g-C3N4/ZnO/Ag2CrO4 and its polyaniline-supported (PANI) composites were synthesized using an “in situ” oxid…
View article: Magnetic Fe3O4 /Al2O3 /MnO2 ternary nanocomposite: Synthesis and characterization for phosphorus desorption from acidic soils using dialysis membrane tube
Magnetic Fe3O4 /Al2O3 /MnO2 ternary nanocomposite: Synthesis and characterization for phosphorus desorption from acidic soils using dialysis membrane tube Open
Monitoring phosphorus fertilization is crucial for controlling the concentration of biologically available soil P. Over the years, several methodologies have been used, including successive cropping in a greenhouse or field, as well as ext…
View article: The non-edible and disposable parts of oyster mushroom, as novel adsorbent for quantitative removal of atrazine and its degradation products from synthetic wastewater
The non-edible and disposable parts of oyster mushroom, as novel adsorbent for quantitative removal of atrazine and its degradation products from synthetic wastewater Open
In this study, the non-edible part of oyster mushroom was utilized for quantitative removal of the most commonly used s-triazine herbicide; atrazine and its breakdown products including deethylatrazine (DEA), hydroxyatrazine (ATOH) and dei…
View article: Impact of source water quality on total organic carbon and trihalomethane removal efficiency in a water treatment plant: A case study of Upper Awash, Ethiopia
Impact of source water quality on total organic carbon and trihalomethane removal efficiency in a water treatment plant: A case study of Upper Awash, Ethiopia Open
This study addresses the limited understanding of factors affecting the efficiency of water treatment plants in reducing trihalomethane (THM) formation through total organic carbon (TOC) removal, highlighting significant challenges in impr…
View article: Preparation and Adsorption Behavior of Ce(III)-MOF for Phosphate and Fluoride Ion Removal from Aqueous Solutions
Preparation and Adsorption Behavior of Ce(III)-MOF for Phosphate and Fluoride Ion Removal from Aqueous Solutions Open
The discharge of inorganic pollutants like phosphate and fluoride is a cause of mounting concern to the world due to the substantial environmental and human health risk. Adsorption is one of the most common and affordable technologies wide…
View article: UiO-66 (Zr-MOF): Synthesis, Characterization, and Application for the Removal of Malathion and 2, 4-D from Aqueous Solution
UiO-66 (Zr-MOF): Synthesis, Characterization, and Application for the Removal of Malathion and 2, 4-D from Aqueous Solution Open
UiO-66 (Zr-MOF) metal-organic framework was successfully synthesized by the solvothermal method and characterized using FTIR, PXRD and TGA. Its ability to remove Malathion, 2,4-Dichlorophenoxyacetic acid (2,4-D) and a mixture of the two fr…
View article: Magnetic coffee residue biosorbent for selective extraction of zinc oxide nanoparticles in water samples
Magnetic coffee residue biosorbent for selective extraction of zinc oxide nanoparticles in water samples Open
Quantification of engineered nanomaterials in the environment has attracted researchers’ interest recently because of their increased release to the environment. In this study, a recyclable and easily accessible magnetized coffee residue (…
View article: Al2O3/Fe3O4/ZrO2 ternary oxide sorbent: Synthesis, characterization and sorption behavior to fluoride and phosphate ions from aqueous solution
Al2O3/Fe3O4/ZrO2 ternary oxide sorbent: Synthesis, characterization and sorption behavior to fluoride and phosphate ions from aqueous solution Open
Excess quantities of fluoride and phosphate in water bodies can lead to fluorosis and eutrophication problems, respectively. In search of a promising adsorbent targeting these ions, Fe3O4/Al2O3/ZrO2 ternary oxide was synthesized via co-pre…
View article: Biosensitivity and Theoretical Electronic Structure Investigations on 3-(2-Hydroxyphenyl)-2-iminothiazolidin-4-one and Its Zn2+ and Cd2+ Metal Complexes
Biosensitivity and Theoretical Electronic Structure Investigations on 3-(2-Hydroxyphenyl)-2-iminothiazolidin-4-one and Its Zn2+ and Cd2+ Metal Complexes Open
A two-step cyclocondensation reaction has been carried out using 2-aminophenol with 2-chloroacetyl chloride to produce o-hydroxyphenyl chloroacetamide followed by treatment with KSCN in CH3COCH3 to produce the heterocyclic ligand 3-(2-hydr…
View article: Correlation and path coefficient analysis studies in Ethiopian Mustard (Brassica carinata A. Braun)
Correlation and path coefficient analysis studies in Ethiopian Mustard (Brassica carinata A. Braun) Open
Ethiopia is the center of origin for Ethiopian mustard (Brassica carinata). The crop is one of the oldest oil crops and farmers in the highlands of the country grow as a leafy vegetable in their gardens. However, no attempt has been made t…
View article: Cellulose acetate-Sn(IV) molybdophosphate: A biopolymer supported composite Exchanger for the removal of selected heavy metal ions
Cellulose acetate-Sn(IV) molybdophosphate: A biopolymer supported composite Exchanger for the removal of selected heavy metal ions Open
Cellulose acetate-tin(IV) molybdophosphate (CATMP) composite exchanger was prepared by mixing biopolymer celluloseacetate with its inorganic counterpart tin(IV) molybdophosphate (TMP) using sol‑gel method. The physical characterization of …
View article: Preparation and sorption property study of Fe3O4/Al2O3/ZrO2 composite for the removal of cadmium, lead and chromium ions from aqueous solutions
Preparation and sorption property study of Fe3O4/Al2O3/ZrO2 composite for the removal of cadmium, lead and chromium ions from aqueous solutions Open
Fe-Al-Zr ternary mixed oxides composite was synthesized via co-precipitation method for the removal Pb(II), Cd(II) and Cr(VI) ions from aqueous solutions. The as-synthesized materials were characterized by X-ray diffraction (XRD), Brunauer…
View article: Levels of some toxic heavy metals (Cr, Cd and Pb) in selected vegetables and soil around eastern industry zone, central Ethiopia
Levels of some toxic heavy metals (Cr, Cd and Pb) in selected vegetables and soil around eastern industry zone, central Ethiopia Open
The purpose of this study was to determine the concentration of heavy metals (Cr, Cd and Pb) in vegetables and the soil contaminating levels as a result of irrigation using Flame Atomic Absorption Spectrophotometer (FAAS). The wet digestio…
View article: Levels of some selected metals (Fe, Cu and Zn) in selected vegetables and soil around eastern industry zone, central Ethiopia
Levels of some selected metals (Fe, Cu and Zn) in selected vegetables and soil around eastern industry zone, central Ethiopia Open
The purpose of this study was to determine the concentration of selected metals (Fe, Zn and Cu) in vegetables and the soil contaminating levels due to irrigation, using Flame Atomic Absorption Spectrophotometer (FAAS). The wet digestion an…
View article: Determination of Some Selected Heavy Metals in Water, Oreochromis niloticus and Labeobarbus intermedius Samples from Abaya and Chamo Lakes
Determination of Some Selected Heavy Metals in Water, Oreochromis niloticus and Labeobarbus intermedius Samples from Abaya and Chamo Lakes Open
The fish organs and water was collected from three sampling sites of Lakes Chamo and Abaya. A procedure consuming 12 mL mixture of HNO 3 -H 2 O 2 for gill, kidney, liver and 1:2.5 mL mixture of HNO 3 -HCl for water samples for digestion of…
View article: Amberlite<sup>TM</sup> IRA67: A novel and efficient ion exchange resin catalyst for the synthesis of 1, 8-dioxoxanthene derivatives
Amberlite<sup>TM</sup> IRA67: A novel and efficient ion exchange resin catalyst for the synthesis of 1, 8-dioxoxanthene derivatives Open
The catalytic performance of AmberliteTM IRA67, the heterogeneous weak Base Exchange resin which bears tertiary amine functional group, for the synthesis of 1, 8-dioxoxanthene derivatives were investigated. The AmberliteTM IRA67 heterogene…
View article: Modified QuEChERS method for the determination of s-Triazine herbicide residues in soil samples by high performance liquid chromatography-diode array detector
Modified QuEChERS method for the determination of s-Triazine herbicide residues in soil samples by high performance liquid chromatography-diode array detector Open
A modified QuEChERS method has been proposed for the quantitative determination of four s-triazine herbicides including atrazine, secbumetone, aziprotryne and terbutryn by high performance liquid chromatography with diode array detector (H…
View article: Quantitative Determination of the Heavy Metal Levels in the Wild Edible Plant Parts and their Corresponding Soils of the Central and Western Regions of the Oromia State, Ethiopia
Quantitative Determination of the Heavy Metal Levels in the Wild Edible Plant Parts and their Corresponding Soils of the Central and Western Regions of the Oromia State, Ethiopia Open
This study was designed to assess the levels of selected metals (Pb, Cu, Zn, Cd, Ni, Cr and Ca) in wild edible plants and their corresponding soil samples by FAAS.A wet digestion procedure has been adopted to digest the plant and soil samp…