The application of natural zeolites for mercury removal: from laboratory tests to industrial scale

Chojnacki, A.; Chojnacka, Katarzyna; Hoffmann, J.; Górecki, H.

doi:10.1016/j.mineng.2004.03.002

Cited by 122 publications

(73 citation statements)

References 13 publications

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“…Zeolites has been reported as adsorbent for removal of mercury [2]. On the hand, chitosan coated with magnetic nanoparticles for removal of mercury in aquoues and oily samples have been also reported by Nasirimoghaddam et al [3].…”

Section: Introductionmentioning

confidence: 94%

“…In the petrochemical industry and oil refining, mercury can poison for catalyst and contaminate in wastewater. In addition, mercury is also harmful to human health [2].…”

Section: Introductionmentioning

confidence: 99%

“…As we know that the removal of mercury or reduction of metal content have been done by chemical precipitation, ion exchange, membrane, solvent extraction and adsorption [3]. Adsorption method was know as a highly effective and economical process for removal of mercury [2,3]. Magnetic iron oxide nanoparticles (Fe3O4NPs) is a material with strong magnetic properties, thus it can produce the active surface of magnetite and has a large surface area.…”

Section: Introductionmentioning

confidence: 99%

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Removal of Mercury in Liquid Hydrocarbons using Zeolites Modified with Chitosan and Magnetic Iron Oxide Nanoparticles

Kusrini¹,

Susanto²,

Nasution

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. Clinoptilolite zeolites were chemically modified with chitosan (Chit) and magnetic iron oxide nanoparticles (Fe3O4NPs) were synthesized for removal of mercury from liquid condensate hydrocarbon. The mercury content was in liquid hydrocarbon which was measured by Lumex mercury analyzer. The performance of sorbents based on zeolites modified chitosan and magnetic nanoparticles were examined on the real liquid condensate hydrocarbon. Removal of mercury using a prestine clinoptilolite zeolites, and zeolites modified chitosan (zeolites-Chit) were ~4.5, and ~35%, respectively. The effects of magnetic nanoparticles in zeolites-Chit sorbents were significant to reduce the mercury content in liquid condensate hydrocarbon which were from ~63 to ~66%. Increasing the mass ratio of Fe3O4 that influenced to the BET surface area of natural zeolites. Zeolites-Chit-Fe3O4NPs as an efficient sorbents are potential ideal to remove mercury in hydrocarbon for practical applications.

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Section: Introductionmentioning

confidence: 94%

“…In the petrochemical industry and oil refining, mercury can poison for catalyst and contaminate in wastewater. In addition, mercury is also harmful to human health [2].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Removal of Mercury in Liquid Hydrocarbons using Zeolites Modified with Chitosan and Magnetic Iron Oxide Nanoparticles

Kusrini¹,

Susanto²,

Nasution

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

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“…peat (Viraraghavan and Kapoor 1995), chitosan and its derivatives (Miretzky and Fernandez Cirelli 2009) or inorganic: e.g. dispersed iron oxide, hydrous manganese and tin oxides , Fe oxyhydroxide (FeOOH) and Fe/Mn oxyhydroxides (Kokkinos et al 2014), zeolites (Chojnacki et al 2004), clays (Eloussaief et al 2013;Viraraghavan and Kapoor 1994), pozzolana and yellow tuff (Di Natale et al 2006) and synthetic titanosilicates (Otero et al 2009) or magnetic di-thio functionalized mesoporous silica nanoparticles (Mehdinia et al 2015). Also, a wide array of wastes have been proposed-either used directly or as precursors-as novel low-cost Hg adsorbents (Bhattacharyya et al 2013;Miretzky and Fernandez Cirelli 2009), and these include agricultural (e.g.…”

Section: Introductionmentioning

confidence: 99%

Use of red mud (bauxite residue) for the retention of aqueous inorganic mercury(II)

Rubinos

Barral

2015

Environ Sci Pollut Res

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The effectiveness of the oxide-rich residue from bauxite refining (red mud) to remove inorganic Hg(II) from aqueous solutions was assessed. The aspects studied comprised the kinetics of the process (t = 1 min-24 h), the effect of pH (3.5-11.5), the interacting effect between salt concentration (0.01-1 M NaNO3) and pH and the Hg(II) sorption isotherm. Hg leaching from spent red mud was evaluated using the toxicity characteristics leaching procedure (TCLP) method. The sorption of Hg(II) onto red mud was very fast, with most of Hg(II) (97.0-99.7%) being removed from 0.5-50 μM Hg solutions in few minutes. The kinetic process was best described by Ho's pseudo-second order equation, pointing to chemisorption as the rate controlling step. Hg(II) sorption efficiency was very high (% removal between 93.9 and 99.8%) within all the studied pH range (3.5-11.5) and added Hg concentrations (5 and 50 μM), being optimal at pH 5-8 and decreasing slightly at both lowest and highest pH. The effect of background electrolyte concentration suggests specific sorption as the main interaction mechanism between Hg(II) and red mud, but the increasing non-sorbed Hg concentrations at low and high pH for higher electrolyte concentrations also revealed the contribution of an electrostatic component to the process. The sorption isotherm showed the characteristic shape of high affinity sorbents, and it was better described by the Redlich-Peterson and Freundlich equations, which are models that assume sorbent heterogeneity and involvement of more than one mechanism. The estimated Hg(II) sorption capacity from the Langmuir equation (q m ~9 mmol/kg) was comparable to those of some inorganic commercial sorbents but lower than most bio- or specifically designed sorbents. The leachability of retained Hg(II) from spent red mud (0.02, 0.25 and 2.42 mmol Hg/kg sorbed concentration) was low (0.28, 1.15 and 2.23 μmol/kg, respectively) and accounted for 1.2, 0.5 and 0.1% of previously sorbed Hg, indicating that Hg(II) is tightly bound by red mud once sorbed.

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“…It is also important that clinoptilolite can be used for heavy metals sorption on an industrial scale e.g. (Chojnacki et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Application of genetic algorithms to determine heavy metal ions sorption dynamics on clinoptilolite bed

Tomczak¹,

Kamiński²

2012

Chemical and Process Engineering

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In the last decade a growing interest was observed in low-cost adsorbents for heavy metal ions. Clinoptilolite is a mineral sorbent extracted in Poland that is used to remove heavy metal ions from diluted solutions. The experiments in this study were carried out in a laboratory column for multicomponent water solutions of heavy metal ions, i.e. Cu(II), Zn(II) and Ni(II). A mathematical model to calculate the metals' concentration of water solution at the column outlet and the concentration of adsorbed substances in the adsorbent was proposed. It enables determination of breakthrough curves for different process conditions and column dimensions. The model of process dynamics in the column took into account the specificity of sorption described by the Elovich equation (for chemical sorption and ion exchange). Identification of the column dynamics consisted in finding model coefficients β, K E and D eff and comparing the calculated values with experimental data. Searching for coefficients which identify the column operation can involve the use of optimisation methods to find the area of feasible solutions in order to obtain a global extremum. For that purpose our own procedure of genetic algorithm is applied in the study.

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The application of natural zeolites for mercury removal: from laboratory tests to industrial scale

Cited by 122 publications

References 13 publications

Removal of Mercury in Liquid Hydrocarbons using Zeolites Modified with Chitosan and Magnetic Iron Oxide Nanoparticles

Removal of Mercury in Liquid Hydrocarbons using Zeolites Modified with Chitosan and Magnetic Iron Oxide Nanoparticles

Use of red mud (bauxite residue) for the retention of aqueous inorganic mercury(II)

Application of genetic algorithms to determine heavy metal ions sorption dynamics on clinoptilolite bed

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