Low-cost nanoparticles sorbent from modified rice husk and a copolymer for efficient removal of Pb(II) and crystal violet from water

Masoumi, Arameh; Hemmati, Khadijeh; Ghaemy, Mousa

doi:10.1016/j.chemosphere.2015.12.017

Cited by 103 publications

(30 citation statements)

References 32 publications

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“…The linear form of this model is expressed by Eq. 6: lnq_e=lnq_m-βε^2 (6) where β (mol 2 /J2) and qm (mg/g) are the constants of the D-R model and ԑ is the Polanyi potential determined from the equation ԑ = RTln (1 + 1/Ce). R is the constant of the gases (8.314 J/mol.K) and T is the absolute temperature (K).…”

Section: Isotherm Studymentioning

confidence: 99%

“…Lead and cobalt ions are of the most common hazardous metal ions which are found in various sewage industries. These ions can cause deaths in plants and animals and many diseases in the human body [6,7]. The authorized amount of these ions has been reported 50 μg/L and 15 μg/L by the World Health Organization (WHO) and the Environmental Protection Agency (EPA), respectively [8].…”

Section: Introductionmentioning

confidence: 99%

“…Among these methods, the adsorption method is widely applied considering its ease of implementation and low cost [11]. To recover and remove lead and cobalt ions, various adsorbents such as magnetic nanoparticles, algae biomass, sodium montmorillonite and calcium montmorillonite [12], activated carbon, fungi, magnetic hydrogels, and rice peel [6] have been used. However, today research is underway in finding adsorbents of lower cost and higher capacity.…”

Section: Introductionmentioning

confidence: 99%

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Removing Lead and Cobalt Ions from Aqueous Solution by Hydroxyapatite Adsorbent

Vahdat¹

2019

NNOA

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In the current study, to recover and remove lead and cobalt ions from an aqueous solution, hydroxyapatite (HAp) and magnetic nanocomposite of HAp were used. For this purpose, chicken thighbone was used as the starting material. Lead and cobalt ion adsorption process was performed discontinuously within the temperature range 25-55℃, contact time 5-120 min, adsorbent dose 0.25-5g/L, and pH 2-9. Under optimum conditions, the maximum ions adsorption efficiency using hydroxyapatite (HAp) and magnetic nanocomposite of HAp was determined to be 93.75% and 96.11% for lead and 90.48% and 94/72% for cobalt, respectively. FTIR, SEM, and EDS analyses were applied to characterize the adsorbents.

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Section: Isotherm Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Removing Lead and Cobalt Ions from Aqueous Solution by Hydroxyapatite Adsorbent

Vahdat¹

2019

NNOA

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“…Chemically modified rice husk for mercury adsorption 185 was successfully regenerated using 0.1M HCl, only losing 10% adsorption capacity (Song et 186 al., 2016). Regeneration by NaOH has been successfully used for rice husk that has been used for arsenate (Luo et al, 2016) and Pb adsorption (Masoumi et al, 2016). Rice husk ash, a product of the incineration of rice husk, has many uses including catalyst carriers, fillers in cement, fertilisers, and production of gels and polymers (Kumar et al, 2016).…”

Section: Regeneration 144mentioning

confidence: 99%

The potential for the use of waste products from a variety of sectors in water treatment processes

Grace

Clifford

Healy

2016

Journal of Cleaner Production

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“…Moreover, dyes hinder sunlight from entering water and slowing photosynthesis for plants in water [2]. Some of the techniques used to treat dye-containing wastewater are Fenton oxidation, membrane filtration, photodegradation, coagulation-flocculation, biosorption, and adsorption [3][4][5][6][7][8][9][10]. Ease of use, low energy application, and simple operation are some of the advantages of using membrane and coagulationflocculation [6,7].…”

Section: Introductionmentioning

confidence: 99%

Banana Fibers as Sorbent for Removal of Acid Green Dye from Water

Karim

Lim

Chua

et al. 2016

Journal of Chemistry

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In this study, banana fibers extracted from banana leaves, stem, and stalk were used to remove acid green dye from aqueous solution. Three initial concentrations (750, 1000, and 1500 ppm) were chosen to determine the kinetic characteristics of the banana fiber sorbents at 25 ∘ C, agitation speed of 200 rpm, and total contact time of 3 hours. The pseudo-first-order, pseudo-second-order, and Dunwald-Wagner kinetic models were applied to the experimental kinetic data. For isotherm study, the batch experiments were performed at 25 ∘ C, initial pH 2, agitation speed of 200 rpm, and initial concentrations between 100 and 2000 ppm. The experimental data was fitted to the Langmuir, Freundlich, Dubinin-Radushkevich, and Temkin isotherms. The equilibrium was achieved in less than 90 minutes. The removal of the acid green dye was found to be following closely the pseudo-second-order kinetic model. For equilibrium study, the Freundlich isotherm was found to fit well with adsorption of acid green dye on the banana leaves, stem, and stalk sorbents. The calculated mean free energy of 4-11 J/mol indicated that the sorption process was mostly physical in nature. Experimental results also showed the adsorption performance is greatly affected by the initial solution pH.

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Low-cost nanoparticles sorbent from modified rice husk and a copolymer for efficient removal of Pb(II) and crystal violet from water

Cited by 103 publications

References 32 publications

Removing Lead and Cobalt Ions from Aqueous Solution by Hydroxyapatite Adsorbent

Removing Lead and Cobalt Ions from Aqueous Solution by Hydroxyapatite Adsorbent

The potential for the use of waste products from a variety of sectors in water treatment processes

Banana Fibers as Sorbent for Removal of Acid Green Dye from Water

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