Mercury adsorption on a carbon sorbent derived from fruit shell of Terminalia catappa

Inbaraj, Baskaran Stephen; Sulochana, N.

doi:10.1016/j.jhazmat.2005.10.025

Cited by 121 publications

(68 citation statements)

References 25 publications

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“…Activated carbon (AC) is identified as a high capacity adsorbent to remove Hg from aqueous phase (Huang 1978;Koshima and Onishi 1980;Ma et al 1992) due to the presence of its numerous porous structure, large active surface area, and good mechanical properties (Gergova et al 1993;Girgis and Ishak 1999;Bhakta et al 2009;Zabihi et al 2009;Cai and Jia 2010). The various materials such as, peanut hull (Namasivayam and Periasamy 1993), jackfruit peel (Inbaraj and Sulochana 2001), coir pith (Namasivayam and Kadirvelu 1999), flax shive (Cox et al 2000), sago waste (Kadirvelu et al 2004), cotton stalks (Girgis and Ishak 1999), fruit shell (Gergova et al 1993;Inbaraj and Sulochana 2006;Zabihi et al 2009) and sewage sludge (De Filippis et al 2013) have been used as carbonaceous precursors to produce AC for applying as Hg removal sorbent. Besides, the scientists have applied various methods in the carbonization process to develop the AC from the precursor's materials and modification of AC to enhance the sorption capacity.…”

Section: Introductionmentioning

confidence: 99%

Sorption of mercury onto waste material derived low-cost activated carbon

et al. 2014

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The present study was performed to develop the low-cost activated carbon (AC) from some waste materials as potential mercury (Hg) sorbent to remove high amount of Hg from aqueous phase. The ACs were prepared from banana peel, orange peel, cotton fiber and paper wastes by pyrolysis and characterized by analyzing physico-chemical properties and Hg sorption capacity. The Brunauer Emmett and Teller surface areas (cotton 138 m 2 /g; paper 119 m 2 /g), micropore surface areas (cotton 65 m 2 /g; paper 54 m 2 /g) and major constituent carbon contents (cotton 95.04 %; paper 94.4 %) were higher in ACs of cotton fiber and paper wastes than the rest two ACs. The Hg sorption capacities and removal percentages were greater in cotton and paper wastes-derived ACs compared to those of the banana and orange peels. The results revealed that elevated Hg removal ability of cotton and paper wastes-derived ACs is largely regulated by their surface area, porosity and carbon content properties. Therefore, ACs of cotton and paper wastes were identified as potential sorbent among four developed ACs to remove high amount of Hg from aqueous phase. Furthermore, easily accessible precursor material, simple preparation process, favorable physico-chemical properties and high Hg sorption capacity indicated that cotton and paper wastes-derived ACs could be used as potential and lowcost sorbents of Hg for applying in practical field to control the severe effect of Hg contamination in the aquatic environment to avoid its human and environmental health risks.

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Section: Introductionmentioning

confidence: 99%

Sorption of mercury onto waste material derived low-cost activated carbon

et al. 2014

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“…In order to prevent the problems due to the toxicity of mercury, several technologies have been proposed to remove this metal from aqueous media, which include ion exchange, adsorption, sulphide precipitation, electrodeposition, solvent extraction and membrane processes 1 . Among the available technological alternatives for the removal of trace metals from water, adsorption has been considered an economically feasible one [2][3][4][5][6][7][8] . Activated carbons are universal adsorbents that can be obtained from a wide variety of raw materials including wastes of industrial activities [9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Adsorption of mercury (II) from liquid solutions using modified activated carbons

et al. 2010

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Mercury is one of the most toxic metals present in the environment. Adsorption has been proposed among the technologies for mercury abatement. Activated carbons are universal adsorbents which have been found to be a very effective alternative for mercury removal from water. The effectiveness with which a contaminant is adsorbed by the solid surface depends, among other factors, on the charge of the chemical species in which the contaminant is in solution and on the net charge of the adsorbent surface which depend on the pH of the adsorption system. In this work, activated carbon from carbonized eucalyptus wood was used as adsorbent. Two sulphurization treatments by impregnation with sulphuric acid and with carbon disulphide, have been carried out to improve the adsorption capacity for mercury entrapment. Batch adsorption tests at different temperatures and pH of the solution were carried out. The influence of the textural properties, surface chemistry and operation conditions on the adsorption capacity, is discussed.

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“…According to analysis data, significant model observed and perfectly indicate that the Langmuir plot (figure 7) also gives a fairly excellent fit to the experimental data with R 2 = 0.989 rather than other isotherm constant in these process (Freundlich model (Inbaraj and Sulochana, 2006).…”

Section: Langmuir Modelmentioning

confidence: 73%

Removal of Mercury Ions by Polyaniline/Rice Husk Nanocomposite from Aqueous Solutions

Ghaffarpour¹,

Ghorbani²

2015

IJSRES

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Abstract. Rice husk is a by-product of the agricultural industry which could be applied for green-composite which obtained from massiveness waste-agricultural materials as a replacement to reducing expenses methods of removing heavy metal ions from wastewater. The adsorption of mercury (Hg) from solutions by a composite of polyaniline/rice husk (PAN/ RH) with hydroxypropyl cellulose (HPC) from the aqueous solutions was considered as a main purpose. The data revealed that the solution pH values of the aqueous solution indicated that Hg(II) adsorption can efficiently remove Hg(II) in pH 6 and equilibrium time of 30 min (50 ppm). The adsorption isotherms were best fitted to a Freundlich model compared to Langmuir, which indicates the adsorption of Hg (II) onto PAN/RH with R2 = 0.989. The agro-synthesized composite were analyzed and characterized by FTIR. The morphology of nanocomposite was observed by using Scanning Electron Microscope (SEM), which indicated that the polyaniline/rice husk were uniformly dispersed and highly stabilized in the presence of hydroxypropyl cellulose as a surfactant.

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Mercury adsorption on a carbon sorbent derived from fruit shell of Terminalia catappa

Cited by 121 publications

References 25 publications

Sorption of mercury onto waste material derived low-cost activated carbon

Sorption of mercury onto waste material derived low-cost activated carbon

Adsorption of mercury (II) from liquid solutions using modified activated carbons

Removal of Mercury Ions by Polyaniline/Rice Husk Nanocomposite from Aqueous Solutions

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