Inorganic Mercury-Bituminous Coal Sorption Interaction in Water

Pandey, Mahesh P.; Chaudhuri, Malay

doi:10.1016/b978-1-4832-8438-5.50052-2

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…Other adsorbents such as flyash,16 red mud,16 blast furnace sludge,17 waste Fe(III)/Cr(III) hydroxide,18 biogas residual slurry,19 olive mill product20 and bentonite21 are also used. Heavy metal removal using naturally occurring materials like coal, peat moss, vermiculite7, 22, 23 and inorganic materials such as natural clay,24 and activated clay25 are known.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of lead(II) from aqueous solution by activated carbon prepared from Eichhornia

Shekinah

Kadirvelu

Kanmani

et al. 2002

J of Chemical Tech & Biotech

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Activated carbon prepared from Eichhornia was used for the adsorptive removal of Pb(II) from aqueous solution. As the raw material for the preparation of the activated carbon is an aquatic weed, the production of this carbon is expected to be economically feasible. Parameters such as agitation time, metal ion concentration, adsorbent dose and pH were studied. Adsorption equilibrium was reached in 100 min for a solution containing 15 mgdm À3 and 125 min for solutions containing 20 and 25 mgdm À3 Pb(II), respectively. Adsorption parameters were determined using both Langmuir and Freundlich isotherm models. The adsorption capacity was 16.61 mgg À1 at pH 3.0 for particle sizes of 125±180 mm. Pb(II) removal increased as the pH increased from 2 to 4 and remained constant up to pH 10.0. Desorption studies were also carried out with dilute hydrochloric acid to recover both carbon and Pb(II). Quantitative desorption of Pb(II) from carbon indicates that adsorption of metal ion is by ion exchange.

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Section: Introductionmentioning

confidence: 99%

Adsorption of lead(II) from aqueous solution by activated carbon prepared from Eichhornia

Shekinah

Kadirvelu

Kanmani

et al. 2002

J of Chemical Tech & Biotech

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“…The extent of desorption is of engineering significance because of the possible release of sorbed metals into solution as a result of changes in solution composition, pH, ionic strength, and temperature. Low levels of desorption of mercury and chromium ions from activated carbon on account of decreased solution pH were reported (Kim, 1976;Pandey and Chaudhuri, 1980;and Pandey and Chaudhuri, 1982). The extent of cadmium desorption increased with de creasing pH (Huang and Smith, 1981).…”

mentioning

confidence: 99%

Kinetics of sorption and desorption of copper(II) and lead (II) on activated carbon

Wilczak¹,

Keinath²

1993

Water Environment Research

127

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The rate of sorption of copper(II) and lead(II) onto activated carbons Nuchar SA and Filtrasorb 400 was observed to occur rapidly at the outset, followed by a slow and prolonged sorption. This indicates that previous sorption studies conducted for short equilibration periods likely underestimated the actual capacity of activated carbon for heavy metals. Although copper and lead ions desorbed from the activated carbon surface rapidly, the rate of desorption of lead was slower, prevailing over several days. Sorption of copper and lead ions on Nuchar SA was found to be fully reversible.zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA Water Environ. Res.,zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA 65, 238 (1993).

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“…Other adsorbents such as flyash 13 , red mud 14 , blast furnace sludege 15 , waste Fe(II)/Cr(III) hydroxide 16 , biogas residual slurry 17 , olive mill product 18 and bentonite 19 are also used. Heavy metal removal using naturally occurring materials like coal, peat moss, vermiculite 7,20,21 and inorganic materials such as natural clay 22 and activated clay 23 are known.…”

Section: Introductionmentioning

confidence: 99%

Uptake of Pb(II) ion From Aqueous Solution Using Silk Cotton Hull Carbon: An Agricultural Waste Biomass

Shanmugavalli¹,

Shabudeen²,

Venckatesh

et al. 2006

Journal of Chemistry

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Activated carbon prepared from silk cotton hull (SCH) was used for the adsorptive removal of Pb(II) ion from aqueous solution. The raw material used for the preparation of activated carbon is the waste of agricultural product; the production of this carbon is expected to be economically feasible. Parameters such as agitation time, metal ion concentration, adsorbent dose, pH and Particle size were studied. Adsorption equilibrium was reached within 80 min for 10, 20, 30 and 40mg/l of Pb(II) ion with 50mg of carbon per ml of solution. Adsorption parameters were determined using both Langmuir and Freundlich isotherm models. The adsorption efficiency reached 100% for 20, 30 and 40mg/l of Pb(II) ion with 120, 140 and 150mg of carbon. Pb(II) ion removal increased as the pH increased from 2 to 5 and remains constant up to pH 10. Desorption studies were also carried out with dilute hydrochloric acid to know the mechanism of adsorption. Quantitative desorption of Pb(II) ion from carbon indicates that adsorption of metal ion is by ion-exchange. Efficiency of the adsorption of SCH was also studied with Pb containing industrial wastewater by varying pH and carbon concentration.

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Inorganic Mercury-Bituminous Coal Sorption Interaction in Water

Cited by 7 publications

References 7 publications

Adsorption of lead(II) from aqueous solution by activated carbon prepared from Eichhornia

Adsorption of lead(II) from aqueous solution by activated carbon prepared from Eichhornia

Kinetics of sorption and desorption of copper(II) and lead (II) on activated carbon

Uptake of Pb(II) ion From Aqueous Solution Using Silk Cotton Hull Carbon: An Agricultural Waste Biomass

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