Adsorption Isotherms and Kinetics of Lead and Cadmium Ions: Comparative Studies Using Modified Melon (Citrullus colocynthis) Husk

Ogbozige, Francis James; Toko, M.

doi:10.5829/ijee.2020.11.02.10

Cited by 5 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the sorption isotherm of the three metal ions on the SBL was chemical in nature because the value of n for each metal ion was greater than 1 (Es-said et al, 2020;Balkaya and Cesur, 2008;Jiang et al, 2002), and 1/n less than one showed the SBL had a heterogeneous surface with equal energy in all sites (Mishra et al, 2008). These findings affirmed the assertions reported in related studies (Ogbozige et al, 2020;Es-said et al, 2020).…”

Section: Adsorption Isotherms Study For Aqueous and Soil Samplessupporting

confidence: 84%

A cost-effective o-toulidine-based Schiff base as an efficient sorbent for metal ion uptake from aqueous and soil samples: Synthesis, antimicrobial, and acute toxicity analyses

Khan

Jamil

Jabeen

et al. 2023

Front. Environ. Sci.

View full text Add to dashboard Cite

Heavy metals create serious health problems, so the practical implementation and development of low-cost sorbent materials to remove heavy metals from the ecosystem is a worldwide issue. The purpose of this study is to find a low-cost ligand that has the potential to adsorb heavy metals from aqueous and soil samples and also has biological potential. For this, a Schiff base, dimeric o-toluidine (SBL), has been synthesized through condensation, characterized by spectroscopic analysis, and had its biological activities measured. We also studied its adsorption efficiency through a batch technique to remove Zn(II), Co(II), and Cu(II) from aqueous and soil samples under different conditions such as metal ion concentration, pH, contact time, and SBL concentration. The adsorption potential of SBL was analyzed by the Langmuir and Freundlich adsorption isotherms. The values of correlation coefficients revealed that the Freundlich isotherm elucidated results that were more appropriable than the Langmuir model. Adsorption equilibrium was established in 90 min for aqueous samples and in 1,440 min for soil samples. For the maximum adsorption of all metals, the optimum pH was 8, and it showed a capacity to remove 77 to 95 percent of metals from the samples. The maximum adsorption capacity (qmax) of SBL were 75.75, 62.50, and 9.17 mg g-1 in the case of Cu(II), Zn(II), and Co(II) ions, respectively, from aqueous samples and 10.95, 64.10, and 88.49 mg g-1 in the case of Zn(II), Cu (II), and Co(II), respectively, from soil samples. The effectiveness of SBL in the sorption of the selected metals was found to be Cu+2 > Zn+2 > Co+2 for aqueous samples and Co+2 > Cu+2 > Zn+2 for soil samples. The antimicrobial activity of SBL was also investigated. The results revealed that SBL showed moderate inhibitory activity against Staphylococcus dysentria, C. albican, and Aspergillus niger, whereas it exhibited weak activity against S. aureus, P. aureginosa, K. pneumoniae, P. vulgaris, and E.coli when compared to Fluconazole and Ciprofloxacin as the standard. Acute toxicity of the synthesized compound was measured through its daily oral administration with various doses ranging from 0.1 to 1,000 mg/kg of the mice’s body weights. Even at the dose of 1,000 mg/kg, the SBL showed no mortality or any type of general behavioral change in the treated mice. Based on preparation cost, metal removal capacity, toxicity, and antimicrobial activities, SBL is an excellent sorbent and should be studied at pilot scale levels.

show abstract

Section: Adsorption Isotherms Study For Aqueous and Soil Samplessupporting

confidence: 84%

A cost-effective o-toulidine-based Schiff base as an efficient sorbent for metal ion uptake from aqueous and soil samples: Synthesis, antimicrobial, and acute toxicity analyses

Khan

Jamil

Jabeen

et al. 2023

Front. Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…log(q e − q t ) = log(q e1 ) − (K 1 2.303 ⁄ )t (15) where q e denotes the amount adsorbed at equilibrium in (mg g ⁄ ), q t in (mg g ⁄ ) is the amount adsorbed at time t (min), and K 1 (min −1 ) is the rate constant of pseudofirst-order model. The values of q e1 and K 1 were determined from the intercept and the slope of the graph of log(q e − q t ) versus t (Figure 7 and Table 3) [35].…”

Section: Pseudo-first-order Modelmentioning

confidence: 99%

Removal of Pb^(2+) Ions from Aqueous Solutions by Modified Magnetic Graphene Oxide: Adsorption Isotherms and Kinetics Studies

Ramezani

Moradi

Emadi

2020

IJEE

View full text Add to dashboard Cite

Graphene oxide based nano-composites have attracted huge attention for wastewater treatment specially removal of heavy metals. This paper reports adsorption of Pb 2+ onto modified magnetic graphene oxide with chitosan and cysteine (GO/Fe 3 O 4 /Chi/Cys). To study the adsorbent morphology, Field Emission Scanning Electron Microscope (FE-SEM) and Fourier Transform Infrared Spectrometer (FTIR) were used in different stages of surface modification. In order to reveal the nature of sorption process, linear forms of different adsorption isotherms such as Langmuir, Freundlich, Tempkin, and Dubinin-Radushkevich were studied. Experimental data were fitted well by Langmuir model with a maximum monolayer coverage capacity (q max) of 86.21mg g ⁄. Prediction of q max from Langmuir model was in good agreement with maximum empirical adsorption capacity (q exp =85.4mg g ⁄). Various types of kinetic models such as pseudo-first-order, pseudosecond-order, Elovich, and intra particle diffusion were investigated to determine characteristic parameters in the adsorption process. The kinetic studies showed that pseudo-second-order model represents the adsorption process better than others due to its high correlation coefficient (R 2 =0.9996). Therefore, the adsorption process is chemisorption.

show abstract

“…Heavy metals detected in drinking water can endanger the health of people in drinking water. Although the bioaccumulation of heavy metals in humans (for instance, in lipids and the digestive system) could result in cancer and other diseases, certain heavy metals are largely exposed to populations through drinking water [5,6]. Therefore, it is vital to identify alternative water sources because many concerns are directed toward sustainable water treatment processes.…”

Section: Introductionmentioning

confidence: 99%

“…This review article provides a comprehensive overview of how nanoparticles markedly affect the nanofiltration membranes and assist their adsorption and removal of heavy metals by illustrating the mechanism of attachment of nanoparticles to NF membranes and by evaluating the performance of many nanofiltration membranes and comparing the different conditions applied in membrane fabrication and how that effect improves the The recruitment of sodium dodecyl sulfate (SDS) as a surfactant with the plasticizer acetyltributylcitrate (ATBC) to polyethyleneimine (PEI) has a low cost, a high permeability of 9.7 L m −2 h −1 bar −1 , and a rejection rate of >90% for MgCl 2 , Mn 2+ , Ni 2+ , Cd 2+ , and Cu 2+ compared to bare PEI [18]. Table 1 shows the maximum contaminant limit and the possible hazards of these specific contaminants [5].…”

Section: Introductionmentioning

confidence: 99%

“…The recruitment of sodium dodecyl sulfate (SDS) as a surfactant with the plasticizer acetyltributylcitrate (ATBC) to polyethyleneimine (PEI) has a low cost, a high permeability of 9.7 L m −2 h −1 bar −1 , and a rejection rate of >90% for MgCl 2 , Mn 2+ , Ni 2+ , Cd 2+ , and Cu 2+ compared to bare PEI [ 18 ]. Table 1 shows the maximum contaminant limit and the possible hazards of these specific contaminants [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nanofiltration Membranes for the Removal of Heavy Metals from Aqueous Solutions: Preparations and Applications

Mahmoud,

Mostafa

2023

Membranes

View full text Add to dashboard Cite

Water shortages are one of the problems caused by global industrialization, with most wastewater discharged without proper treatment, leading to contamination and limited clean water supply. Therefore, it is important to identify alternative water sources because many concerns are directed toward sustainable water treatment processes. Nanofiltration membrane technology is a membrane integrated with nanoscale particle size and is a superior technique for heavy metal removal in the treatment of polluted water. The fabrication of nanofiltration membranes involves phase inversion and interfacial polymerization. This review provides a comprehensive outline of how nanoparticles can effectively enhance the fabrication, separation potential, and efficiency of NF membranes. Nanoparticles take the form of nanofillers, nanoembedded membranes, and nanocomposites to give multiple approaches to the enhancement of the NF membrane’s performance. This could significantly improve selectivity, fouling resistance, water flux, porosity, roughness, and rejection. Nanofillers can form nanoembedded membranes and thin films through various processes such as in situ polymerization, layer-by-layer assembly, blending, coating, and embedding. We discussed the operational conditions, such as pH, temperature, concentration of the feed solution, and pressure. The mitigation strategies for fouling resistance are also highlighted. Recent developments in commercial nanofiltration membranes have also been highlighted.

show abstract

Adsorption Isotherms and Kinetics of Lead and Cadmium Ions: Comparative Studies Using Modified Melon (Citrullus colocynthis) Husk

Cited by 5 publications

References 12 publications

A cost-effective o-toulidine-based Schiff base as an efficient sorbent for metal ion uptake from aqueous and soil samples: Synthesis, antimicrobial, and acute toxicity analyses

A cost-effective o-toulidine-based Schiff base as an efficient sorbent for metal ion uptake from aqueous and soil samples: Synthesis, antimicrobial, and acute toxicity analyses

Removal of Pb^(2+) Ions from Aqueous Solutions by Modified Magnetic Graphene Oxide: Adsorption Isotherms and Kinetics Studies

Nanofiltration Membranes for the Removal of Heavy Metals from Aqueous Solutions: Preparations and Applications

Contact Info

Product

Resources

About