A5064901209- Arsenic contamination and mitigation
- Environmental remediation with nanomaterials
- Adsorption and biosorption for pollutant removal
- Fluoride Effects and Removal
- Iron oxide chemistry and applications
- Heavy Metal Exposure and Toxicity
- Geochemistry and Elemental Analysis
- Groundwater and Isotope Geochemistry
- Nanomaterials for catalytic reactions
- Heavy metals in environment
- Extraction and Separation Processes
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Analytical chemistry methods development
- Phosphorus and nutrient management
- Graphene and Nanomaterials Applications
- Chemical Synthesis and Characterization
- Graphene research and applications
- Radioactive element chemistry and processing
- Electrochemical sensors and biosensors
- Ion-surface interactions and analysis
- Agricultural Economics and Practices
- Carbon and Quantum Dots Applications
- Diamond and Carbon-based Materials Research
- Supercapacitor Materials and Fabrication
Presidency University
2015-2024
Ramakrishna Mission Vidyamandira
2016-2018
University of Khartoum
1981
This paper presents the synthesis of iron(III)−aluminum(III) mixed oxide with some its physicochemical characteristics and fluoride adsorption behavior thereon. Results showed that optimum initial pH for is 4.0−10.0, equilibrium time required 1.5 h. The isotherm data follow order Redlich−Peterson ≥ Langmuir > Freundlich Temkin. monolayer capacity adsorbent determined to be 17.73 mg/g, which higher than either pure oxides. enthalpy change (ΔH°) entropy (ΔS°) reaction are +29.31 kJ/mol +116.75...
Hydrous stannic oxide (HSO) was synthesized in the laboratory and its systematic Cr (VI) adsorption behaviour studied by means of batch experiments. The particle size HSO used range 140 to 290µm. variable parameters viz. effects pH, concentration time contact etc. are here reported. optimum pH required for maximum found be 2.0 nearly 90 min, respectively. experimental equilibrium data tested Langmuir, Freundlich, Temkin Redlich-Peterson equations. Results indicate following order fit...
Arsenic(V) sorption reaction with nanostructured hydrous iron(III)−zirconium(IV) bimetal mixed oxide (NHIZO) was investigated experimentally varying parameters, viz., the effects of pH, contact time, and isotherm equilibrium at (303 ± 1.6) K. The optimum pH estimated ranged between 5.0 7.0. kinetic data (pH 7.0 0.2) described pseudosecond order Langmuir equations well, respectively. monolayer capacity (9.3582 0.3116) mg·g−1. Thermodynamics analysis suggested endothermic spontaneous nature...
Abstract Synthesis of crystalline hydrous ferric oxide (CHFO), a modified iron-based adsorbent, and its arsenic sorption behaviour have been reported. Here, the effects pH with variation concentrations, contact time, pre-drying CHFO, competition some other anions regeneration arsenicsaturated CHFO are conducted by batch method. The As(V) is highly dependent on concentration experimental system, while that for As(III) insensitive. found to require less time attain equilibrium than arsenic(V)....
Surface-altered hydrous iron(<sc>iii</sc>) oxide incorporating cerium(<sc>iv</sc>) (CIHFO) was prepared and characterised<italic>via</italic>modern analytical tools for applications in fluoride removal from groundwater.
Characterization of synthetic Fe(III)−Zr(IV) mixed oxide (NHIZO) by the X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission (TEM) analyses confirmed material as agglomerated nanocrystallite particles (16−21 nm) which was used for As(III) sorption from water. The optimum pH equilibrium time (As(III) concentrations (mgL−1), 5.0 10.0; NHIZO dose, 2 g·L−1; temperature, 303 K) were 7.0 ± 0.2 2.0 h, respectively. kinetic data described, respectively, pseudo-second-order...
Abstract Fluoride removal with varying different parameters at 303 ± 1.6 K and pH 6.5 0.2 was investigated by hydrous iron(III)-chromium(III) bimetal oxide. The kinetic equilibrium data fitted the pseudo-second order Langmuir isotherm equations very well (R2 = 0.99−1.00), respectively. capacity (θ) free energy (EDR) of adsorption evaluated were 16.34 (±0.50) mg·g−1 15.81 kJ·mol−1, estimated thermodynamic viz. ΔH0, ΔG0, ΔS0 indicated that reaction endothermic but spontaneous for entropy...