cadmium ii removal

Cadmium biosorption by alginate extraction waste and

The results obtained in this study demonstrated that the residue of alginate extraction from the brown seaweed Sargassum filipendula is a promising biosorbent material for cadmium removal from aqueous solutions. The equilibrium is established rapidly, within 150 min, and the rate controlling step is the diffusion through the boundary layer.

Thiol-methyl-modified magnetic microspheres for effective cadmium (II …

For effective removal of cadmium (II) (Cd(II)) from polluted water, a magnetic adsorbent of Fe 3 O 4 @SiO 2 core-shell microspheres modified with methyl-protected thiol groups (Fe 3 O 4 @SiO 2-SH-Protected) was synthesized and characterized by scanning electron, transmission electron, energy dispersive X-ray spectroscopy, Fourier transform infrared …

Cadmium(II) removal from an aqueous solution using …

Batch adsorption experiment showed that grafted copolymer had strong adsorption capacity of 51.546, 53.191, and 55.249 mg/g at 298, 308, and 318 K for Cd(II) removal. The kinetics data were analyzed using pseudo-first-order, pseudo-second-order, and intraparticle diffusion models.

Liquid-liquid extraction of copper (II), zinc (II), cadmium (II), …

Similar trends have been reported previously for (3,5-dimethyl-1H-pyrazol-1-yl)ethanol in the extraction of cadmium(II) (Njoroge et al. 2013), and for 2-pyridyl-N-(20-methylthiophenyl)-methyleneimine (PMTPM) during removal of mercury(II), cadmium(II), and lead(II) from water (Pobi et al. 2019) where the extraction performance of the …

Cadmium and Lead Removal from Aqueous Solution Using

3.2. Adsorption Process 3.2.1. Effect of pH. pH is the main factor that affects the efficacy of the adsorption process. In the present study, the impact of pH on Pb(II) and Cd(II) removal efficiency using biosynthesized PO–Fe 3 O 4 MNPs was verified at pH values ranging from 3 to 8. Pb(II) and Cd(II) adsorption was low at pH values around 3, …

Promotion Effects of Nitrogenous and Oxygenic Functional

The removal efficiency of Mn 1 aBC for Pb(II) was only reduced by 10% even though concentration of Cd(II) was twice of Pb(II), whereas the adsorption capability for Cd(II) was reduced by more than ...

Isotherm and kinetic studies of cadmium biosorption and its …

The removal of Fe(II) and Pb(II) was in the range of ~ 67 mg/gto ~ 69 mg/g for all biomass while cadmium ions showed wide range of uptake from 64.6 mg/g for BB to 66.2 mg/g for IABB.

Novel Magnetic Nanostructured Beads for Cadmium(II) Removal

This study presents an effective magnetic separation method for cadmium removal, based on the use of a novel nanostructured material as an adsorbent. This adsorbent involves the incorporation of ...

Highly Efficient Removal of Cadmium by Sulfur-Modified

Batch experiments showed that the cadmium removal efficiency by SBC could reach more than 90% within 10 min, and the maximum adsorption capacity of cadmium was 268.2 mg g−1, which was 22.35 ...

Harnessing the bio-mineralization ability of urease producing

At higher Cd (II) concentrations of 10 and 15 mg L −1, cadmium removal efficiency was much higher in case of E. cloacae EMB19 compared to S. marcescens. In-vitro cadmium (II) remediation study using urease containing cell-free culture supernatant of S. marcescens and E. cloacae EMB19 showed respective 98 and 53% removal of initial …

Cadmium (II) Removal from Aqueous Solution by Magnetic …

The cadmium (Cd 2+) pollution from the metallurgical process calls for the development of highly efficient biomass-based adsorbents.In this study, a facile method was proposed to prepare the magnetic biochar composite (MBC) for Cd 2+ removal by activated poplar sawdust biochar. The characteristics of the as-fabricated MBC were investigated …

Biosorption of Cu2+, Pb2+, Cd2+ and their mixture from …

Results for single copper(II), lead(II) and cadmium(II) removal. Results of Cu 2+, Pb 2+ and Cd 2+ removal by M. figo sawdust biomass are shown in Table 2. Removal results varied greatly under ...

Cadmium (II) removal mechanisms in microbial …

Cadmium (II) removal mechanisms in microbial electrolysis cells. Cadmium is a toxic heavy metal, causing serious environmental and human health problems. …

Cadmium removal mechanistic comparison of three …

6 Citations. 3 Altmetric. Metrics. Abstract. Cadmium (Cd) is a common toxic heavy metal in the environment. Taking Cd (II) as a target contaminant, we systematically …

Lead and cadmium clean removal from wastewater by …

Lukáš et al. (2014) reported that biochar could effectively remove lead and cadmium. Ni et al. (2019) demonstrated that biochar produced from municipal sewage sludge could almost remove Cd(II) from wastewater, which was 10 times higher than that of commercial activated carbon under the same condition.

Removal of cadmium(II) from aqueous solutions by a novel …

Nano zero-valent iron (nZVI) had great potential in water pollution remediation, but the instability and easy agglomeration limited its application. To improve the dispersion and antioxidant properties of the nZVI, kaolinite-supported sulfide-modified nZVI (S-nZVI@Kaol) was synthesized for the removal of cadmium (II) (Cd(II)) in aqueous …

Cadmium removal mechanistic comparison of three Fe …

Cadmium (Cd) is a common toxic heavy metal in the environment. Taking Cd(II) as a target contaminant, we systematically compared the performances of three Fe-based nanomaterials (nano zero valent iron, nZVI; sulfidated nZVI, S-nZVI; and nano FeS, nFeS) for Cd immobilization under anaerobic conditions. Effects of nanomaterials doses, …

Local fruit peel biosorbents for lead(II) and cadmium(II) ion removal

All the results proved the potential application of these local natural adsorbents in the removal of lead(II)and cadmium(II) ions from waste aqueous solutions. Furthermore, the undeniable advantages of this material include their availability, abandonment and low extraction costs, which may be critical for application in wastewater treatment ...

Modeling of cadmium(II) removal in a fixed bed …

The regenerated activated hydrochar was examined for the removal efficiency of cadmium and was observed 92% as compared to fresh activated hydrochar 97.07%. The results …

Utilisation of environmentally friendly okara-based …

Heavy metals released by various industries are among the major pollutants found in water resources. In this research, biosorption technique was employed to remove cadmium (Cd2+) from an aqueous system using a novel biosorbent developed from okara waste (OW), a residue from soya bean–based food and beverage processing. …

Removal of Cadmium(II) Ions from Water by Adsorption …

Cadmium adsorption onto Eichhornia crassipes biomass was pH- and temperature-dependent, and complete Cd(II) removal from solution was achieved at all Cd(II) concentrations up to 10 mg/L. The biosorption equilibrium was described by Langmuir and The biosorption process followed the pseudo-second-order model (R Freundlich …

Cadmium(II) ion removal from aqueous solution using …

From the results, it was concluded that COS-g-GMA/PPG-Glu is an excellent material as a biosorbent for removal Cd(II) ions from aqueous solution as well as good antimicrobial activity. The present study was proposed to clear toxic heavy metal cadmium using a novel hybrid material of chitosan oligosaccharide-g-glycidyl methacrylate/polypro

(PDF) Removal of cadmium (II) from aqueous solutions by …

Present study deals with the evaluation of biosorptive removal of cadmium by red macro alga Hypnea valentiae. Experiments have been carried out to find the effect of various parameters such as initial cadmium concentration, experimental pH and temperature on the biosorption potential of H. valentiae.

Cadmium(II) removal from aqueous solutions by pre-treated biomass …

At a pH of 5, the maximum removal capacity of the biomass is 0.53 mmol/g. The kinetics of cadmium(II) adsorption were fast with 90% of adsorption taking place within 35 min. This study demonstrated that the pre-treated biomass of Padina sp. could be used as an efficient biosorbent for the treatment of cadmium(II)-bearing wastewater streams.

Removal of Cadmium(II) from Wastewater Using …

Removal of Cadmium (II) from Wastewater Using Novel Cadmium Ion-Imprinted Polymers. Yu Xi †., Yiting Luo †., Jinming Luo ‡., and. Xubiao Luo *†. View Author Information. …

Removal of Cadmium(II) Ions from Water by Adsorption …

Cadmium adsorption onto Eichhornia crassipes biomass was pH-and temperature-dependent, and complete Cd(II) removal from solution was achieved at all Cd(II) concentrations up to 10 mg/L.

Cadmium (II) removal mechanisms in microbial electrolysis …

Cadmium is a toxic heavy metal, causing serious environmental and human health problems. Conventional methods for removing cadmium from wastewater are expensive and inefficient for low concentrations. Microbial electrolysis cells (MECs) can simultaneously treat wastewater, produce hydrogen gas, and remove heavy metals with …

Optimization of Cd (II) removal from aqueous …

Published: 29 March 2023. Optimization of Cd (II) removal from aqueous solution by natural hydroxyapatite/bentonite composite using response surface methodology. …

Removal of cadmium (II) from aqueous solutions by …

The maximum adsorption of cadmium (II) metal ions was observed at pH 6 for all the adsorbents viz; 99.5%, 99% and 85% for JOC, MCC, and SCB, respectively. Order of Cd(II) removal by various biosorbents was JOC > MCC > SCB. JOC may be an alternative biosorbent for the removal of Cd(II) ions from the aqueous solution.

Design and characterization of sulfide-modified

Cd(II) removal rate on nZVI was only 32% in 2 h, while complete immobilization could be achieved in 15 min on S-nZVI, and S-nZVI with an optimal S/Fe molar ratio of 0.3 offered a cadmium removal capacity of about 150 mg g −1 at pH 7 and 303 K. The process of Cd(II) immobilization on S-nZVI was fitted well with pseudo-second …