Single and Binary Adsorption of Cu(II) and Ni(II) Ions from Aqueous Solutions by Sunflower Seed Husk

Abdulhussein, Shahad A.; wared, Abeer I. Al

doi:10.33261/jaaru.2019.26.1.005

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…Paulovics and Bokányi (7) examined chemically modified sunflower hulls and results confirmed that this material has higher ability to reduce Pb(II) and Cd(II) ions concentration from aqueous solution. Removal of copper ions was examined by some authors: Feizi and Jalali (8) and Abdulhussein and Al wared (9) have shown that sunflower husk has a very good binding affinity toward copper ions. However in our study obtained sorption capacity with the same sorbent and same metal was slightly higher (by 15 and 35%, respectively).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks

et al. 2019

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Annual production of the sunflower seed in Serbia is between 650,000-720,000 tons. Most of this amount is used in vegetable oil industry. Abundant by-products from this processing are sunflower seed husks. Husks are usually incinerated by vegetable oil producers in order to obtain energy, used as an animal feed, or, unfortunately, landed up at some landfills. In order to promote new, added value for this abundant, renewable resource, the investigation presented in this paper was conducted. For that purpose, adsorption of Cu(II) ions from synthetic solution by unmodified sunflower seed husks was examined. ATR-FTIR was used to identify functional groups as potential active sites for Cu(II) sorption. Zeta potential values were determined to reveal the surface charge, while the cation exchange capacity (CEC) was determined to reveal the amount of exchangeable ions on its surface. ATR-FTIR analysis revealed the presence of specific functional groups (hydroxyl, carboxyl, carbonyl, and amine) responsible for removal of Cu(II) ions. The total CEC of sunflower husk is 47.74 meq/100g and Ca(II) and Mg(II) ions are in dominant exchangeable positions. The study of ion-exchange mechanism involvement was done and results confirmed that this mechanism is not the only mechanism which is involved in copper sorption. Also, the results show that the Cu(II) ions have preference for Mg(II) ions substitution. Sorption experiments were conducted in batch system. The effect of operating parameters (pH, contact time, initial concentration of Cu(II) ions and adsorbent dosage) on the adsorption capacity were investigated. The obtained experimental data were fitted by Langmuir and Freundlich isotherm models. The maximum adsorption capacity for Cu(II) ions calculated from Langmuir adsorption isotherm was 34.89 mg/g which is 15 to 35% higher than the capacity that other researchers reported previously for the same material and pollutant. These results are suggesting that sunflower seed husks have a potential to be applied as an effective adsorbent of copper ions from contaminated waters.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks

et al. 2019

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“…The following supporting information can be downloaded at: https:// www.mdpi.com/article/10.3390/w14203298/s1, Figure S1: XRD patterns of pine sawdust, sunflower seed hulls, and corn residues mix; Table S1: Main results of literature studies about the adsorption of Ni(II), Zn(II) and Cd(II) on sawdust, sunflower and corn. References [44,52,[61][62][63][64][65][66][67] are cited in the "supplementary materials".…”

Section: Supplementary Materialsmentioning

confidence: 99%

Agro-Industrial Waste as Potential Heavy Metal Adsorbents and Subsequent Safe Disposal of Spent Adsorbents

Simón

Palet

Costas

et al. 2022

Water

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Water pollution is an environmental problem that affects the ecosystem and living beings. Adsorption is one of the best technologies for the removal of heavy metals. Since waste recovery is the basis of the Circular Economy, agro-industrial waste is emerging as low-cost adsorbents for these pollutants from wastewater. Residues of pine sawdust, sunflower seed hulls and corn residues mix were evaluated as adsorbents of synthetic aqueous solutions of Ni(II), Zn(II) and Cd(II). These residues were characterized to determine their structure and composition, and to understand the adsorption mechanism. Adsorption efficiencies and capacities for the adsorbents and adsorbates were determined and compared. From the obtained results, it is possible to affirm that all biomasses used are good alternatives to the synthetic materials, with adsorption efficiencies greater than 50%. The order of adsorption was Cd > Zn > Ni. At the concentration range checked, adsorption efficiencies decreased in sawdust when a mixture of all metals together was considered (as present in real sewage). Finally, the heavy metals were immobilized, with efficiencies over 88.5%, in clay ceramics (as brick’s precursors). This procedure would help to minimize the contamination that could be generated by the disposal of spent adsorbents, rarely explored in the literature.

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“…Toxic metals can accumulate at any point in the food chain and have a detrimental effect on all living things since they are incapable of being broken down by living things. Therefore, it is crucial to create the methods capable of removing dangerous heavy metals out of contaminated wastewaters [12]. Harmful effects associated with heavy metals on people include vomiting, diarrhea, typhoid, cancer, and severe liver and kidney damage [13].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of New Composite Adsorbents for Removing Heavy Metals and Dyes from Aqueous Solution

Mokif,

Obaid,

Juda

2024

J. Ecol. Eng.

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In the current study, a novel composite (Fe 3 O 4 @MnO 2 @Al 2 O 3 ) was prepared to remove crystal violet dye and cadmium from aqueous solutions. The coprecipitation method was utilized to synthesize the composite. Batch studies were carried out using a contact period of 0.5-3 hours, an initial crystal violet and cadmium content of 50-200 mg/L, an agitation speed of 50-200 rpm, a pH of 4-12, and a composite dosage of 0.2-1.0 g per 50 mL of contaminated solution. The isotherm and kinetics models were formulated the experimental data. XRD, SEM-EDS, and FTIR analyses were utilized for composite characterization. The results revealed that the removal efficacy of crystal violet dye was 99.311% at 1 g of adsorbent, pH 12, 50 mg/L, 1 hour, and 200 rpm. The removal efficacy for cadmium (Cd) is 99.7296% at 1 g of sorbent mass at pH 6, 50 mg/L, 1 hour, and 200 rpm. The outcomes demonstrated that the Langmuir model could accurately depict the sorption of crystal violet dye onto the composite with R 2 (0.9882) and SSE (0.7084). On the basis of Freundlich, the capacity of the composite to reflect cadmium sorption was assessed by its highest R 2 (0.8947) and lowest SSE (8.5149). The pseudo-second-order model is a more realistic way to explain how cadmium and crystal violet dye sorb onto the composite. The results showed that the composite is effective in eliminating target pollutants, since cadmium has a maximum adsorption capacity of 48.5052 mg/g and crystal violet dye has a capacity of 40.9682 mg/g. Therefore, (Fe 3 O 4 @MnO 2 @Al 2 O 3 ) can be used as efficient sorbent for removing Cd and crystal violet dye from synthetic industrial wastewater.

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Single and Binary Adsorption of Cu(II) and Ni(II) Ions from Aqueous Solutions by Sunflower Seed Husk

Cited by 6 publications

References 11 publications

Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks

Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks

Agro-Industrial Waste as Potential Heavy Metal Adsorbents and Subsequent Safe Disposal of Spent Adsorbents

Synthesis of New Composite Adsorbents for Removing Heavy Metals and Dyes from Aqueous Solution

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