Adsorption of lead and copper on bentonite and grapeseed activated carbon in single- and binary-ion systems

Baylan, Nilay; Meriçboyu, Ayşegül Ersoy

doi:10.1080/01496395.2016.1212888

Cited by 34 publications

(11 citation statements)

References 40 publications

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“…There may be a requirement to attach to the various bonding sites which increase the adsorption capacity of the copper in the working concentrations. In such systems, there is a race to attach to the surface between metal ions, which changes the adsorption characteristic [7]. The results obtained from this study and adsorption selectivity sequences are consistent with the literature [34].…”

Section: Response Analysis Modeling and Interpretationsupporting

confidence: 89%

“…Particularly developed countries have prepared National and International waste programs and charters with the help of various organizations such as the USPHS (American Health Organization), the WHO (world Health Organization) and the EPA (Environmental Protection Organization) [5,6]. Since especially drinking water need to provide determined limit values in terms of human health, to removal of heavy metal ions from the waste water has become one of the important topics investigated and studied in the world [7]. Therefore, examination of the pollution process has become important in scientific research [8].…”

Section: Introductionmentioning

confidence: 99%

“…In systems containing more than one ion, the adsorption of heavy metal ions is not only dependent on the properties of the adsorbent and solution but also on the interaction between the ion species. There is a competition between different metal ions held on the adsorbent surface and the adsorption of each ion species changes the adsorption characteristics of the system [7].…”

Section: Introductionmentioning

confidence: 99%

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Optimization of the Selective Adsorption of Cu2+ Versus Ni2+ and Zn2+ in the Multi-Ion System With Activated Carbons Prepared by Ultrasound

Başar¹,

Şayan²

2018

Anadolu University Journal of Science and Technology-a Applied Sciences and Engineering

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In this study, optimization of the selective Cu 2+ adsorption from multi-ion media containing Cu 2+ , Zn 2+ and Ni 2+ on activated carbons (AC) prepared from ultrasound-assisted 10 % KOH impregnated hazelnut shells was investigated. For the suitable activated carbons production of selective adsorption of Cu 2+ from multi-ion media, the effects of independent variables such as particle size, ultrasound power density, impregnation rate, impregnation time, activation temperature and activation time were investigated by experiments with partial factorial and central composite design. At the end of the adsorption experiments, activated carbons were evaluated by their adsorption capacities. Additionally, the results were statistically modelled and optimized by using a constrained optimization program via Matlab computer software. The results of the experiments revealed that activated carbon prepared by ultrasound method can be used for the selective Cu 2+ adsorption from multi-ion system efficiently. The selectivity sequence based on the distribution coefficient (Kd) is generally Cu +2 > Zn +2 > Ni +2 for the multi-ion system. Finally, maximum adsorption capacity was found as 82.9 mg Cu 2+ /g Ac under optimum conditions such as particle size 1.7504 mm, ultrasound power/volume 2 W/L, impregnation ratio 0.0168 g/mL, impregnation time 132 min, activation temperature 661 •C and activation time 71.5 min.

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Section: Response Analysis Modeling and Interpretationsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of the Selective Adsorption of Cu2+ Versus Ni2+ and Zn2+ in the Multi-Ion System With Activated Carbons Prepared by Ultrasound

Başar¹,

Şayan²

2018

Anadolu University Journal of Science and Technology-a Applied Sciences and Engineering

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“…Heavy metals are potentially toxic and non-biodegradable and can have a severe impact on human health and the ecosystem. As per WHO standard, for drinking water, 2 mg/L and 0.05mg/L are considered as permissible limits for Pb 2+ and Cu 2+ , respectively (Baylan and Meriçboyu, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, much work has been done on the removal of lead (Baylan and Meriçboyu, 2016 al., 2017) by bentonite. However, a combined study of adsorption along with hydraulic conductivity is limited.…”

Section: Introductionmentioning

confidence: 99%

Influence of lead and copper on behavioural changes of compacted bentonite

Ray

Mishra

Kalamdhad

2021

JGS Special Publication

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In the garbage disposal site, a liner is installed to prevent contaminant migration and reducing the groundwater and surrounding environment getting polluted. Due to chemical stability, high swelling capacity, high specific surface area, low hydraulic conductivity, and high cation exchange capacity, bentonite clay is utilized as a liner material in the disposal site to stop the contamination of the surrounding environment. However, chemicals present inside the landfills may affect the liner properties. This investigation was carried out to determine the influence of heavy metal solution on the change in properties of compacted bentonite. In this study, the sorption and hydraulic conductivity of lead (Pb 2+ ) and copper (Cu 2+ ) were studied on the bentonite clay at an initial concentration of 100 and 1000 mg/L. Test parameter like pH, initial metal concentration, contact time, and agitation speed was examined. The results showed that the sorption capacity of the bentonite increased with a rise in the initial concentration of heavy metals. For an initial concentration of 1000 mg/L, the removal percentage for Pb 2+ and Cu 2+ was found to be 90.68 and 72.178, respectively. The outcome also reveals that the hydraulic conductivity value of the bentonite raised with the rise in Pb 2+ and Cu 2+ concentration.

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