Fuller's earth and fired clay as adsorbents for dyestuffs

McKay, Gordon; Otterburn, M. S.; Aga, Jamal A.

doi:10.1007/bf00161790

Cited by 371 publications

(169 citation statements)

References 10 publications

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“…In Langmuir plots for adsorption, the linear plots of C e / q e vs C e confirm that the adsorption follows the Langmuir isotherm model. (McKay et al, 1985). In the present study, the n values were found to be in the range of 5.865 and K f values at 85.176 for adsorption of dyes studied onto PU foam immobilized cells in agitated mode.…”

Section: Morphological Studies Of Immobilized Bacterial Cells On Puf supporting

confidence: 46%

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

Rajendran¹,

Prabhavathi²,

Karthiksundaram³

et al. 2015

Pol J Microbiol

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A b s t r a c tThe present experiments were studied on bioremediation of denim industry wastewater by using polyurethane foam (PU foam) immobilized bacterial cells. About 30 indigenous adapted bacterial strains were isolated from denim textile effluent out of which only four isolates were found to be efficient against crude indigo carmine degradation using broth decolorization method. The selected bacterial strains were identified as Actinomyces sp., (PK07), Pseudomonas sp., (PK18), Stenotrophomonas sp., (PK23) and Staphylococcus sp., (PK28) based on microscopic and biochemical characteristics. The bacterial immobilized cells have the highest number of viable cells (PK07, PK18, PK23 and PK28 appeared to be 1 × 10 8 , 1 × 10 9 , 1 × 10 6 and 1 × 10 7 CFU/ml respectively) and maximum attachment efficiency of 92% on PU foam. The complete degradation using a consortium of PU foam immobilized cells was achieved at pH 6, 27°C, 100% of substrate concentration and allowed to develop biofilm for one day (1.5% W/V). In SEM analysis, it was found that immobilization of bacterial cells using PUF stably maintained the production of various extracellular enzymes at levels higher than achieved with suspended forms. Finally, isatin and anthranilic acid were found to be degradation products by NMR and TLC. The decolorized dye was not toxic to monkey kidney cell (HBL 100) at a concentration of 50 µl and 95% of cell viability was retained. A mathematical model that describes bacterial transport with biodegradation involves a set of coupled reaction equations with non-standard numerical approach based on the time step scheme. K e y w o r d s: biobarrier model, bioflim, bioremediation, cytotoxicity test, polyurethane foam, secondary metabolites

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Section: Morphological Studies Of Immobilized Bacterial Cells On Puf supporting

confidence: 46%

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

Rajendran¹,

Prabhavathi²,

Karthiksundaram³

et al. 2015

Pol J Microbiol

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“…The analysis of the isotherm data with either theoretical or empirical equations is important to develop an equation which accurately represents the results and which could be used for design purposes (McKay et al, 1985). Several isotherm equations are available.…”

Section: Isotherm Analysismentioning

confidence: 99%

Removal of Methylene Blue From Aqueous Solution Using Ghassoul, a Low-Cost Adsorbent

Elass¹

2010

Appl Ecol Env Res

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Abstract. The present study examined the use of ghassoul, natural clay available in large quantities under the Atlas Mountains in Morocco, for the removal of the basic dye, methylene blue, from aqueous solutions. The effect of initial dye concentrations, agitation time, pH and temperature on adsorption capacities of methylene blue was investigated. The initial pH of the aqueous solution and the change of temperature (25-55 °C) were found to have little effect on the adsorption process. The adsorption was a rapid with 90-99% of the dye removed within the first 10-20 min. The adsorption kinetics are described successfully using a pseudo-second order rate equation and the rate constant decreases with increasing the initial concentration of MB. Experimental and calculated kinetic data for equilibrium are well expressed by Langmuir isotherm. The equilibrium adsorption capacity of ghassoul was determined with the Langmuir equation as well as the pseudo-second-order rate equation and found to be >290 mg dye per gram of the adsorbent. The results indicate that ghassoul could be employed as a low cost alternative to commercial activated carbon in wastewater treatment for the removal of colour and dyes.

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“…Inefficiency of dyeing process results in 10-25 % of all dye stuffs being lost directly to the wastewater (Perineau, et al, 1982). Although the textile dyes contribute only a small portion of the total volume of discharged wastewater after the dyeing process, yet they make it deeply colored (McKay, et al, 1985). The removal of dye in an economic fashion remains an important problem.…”

Section: Introductionmentioning

confidence: 99%

“…The removal of dye in an economic fashion remains an important problem. Considerable work has been carried out on the removal of dye from wastewater (Perineau, et al, 1982;McKay, et al, 1985;Gupta, 1985;Khattri, 2000;Low, et al, 2000;Liversidge, et al, 1997;Choy, et al, 1999, Asilian, et al, 2006. Water insoluble dyes (e.g.…”

Section: Introductionmentioning

confidence: 99%

Potentiality of open burnt clay as an adsorbent for the removal of Congo red from aqueous solution

Mumin

Khan

Akhter

et al. 2007

Int. J. Environ. Sci. Technol.

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ABSTRACT:Open burnt clay was studied as a potential adsorbent for the adsorption of Congo red (a reactive dye) from aqueous solution. The effect of contact time, pH, adsorbent dosage and temperature were studied. It was observed that the amount of Congo red retained increase with decreasing pH and increasing initial concentration. Removal percentage at pH 2 and 3 are almost same. The adsorption capacity of regenerated burnt clay was showed more than 98 % recovery of the adsorption efficiency of initial virgin adsorbent. The equilibrium data were described well by both Langmuir and Freundlich isotherm model. The adsorption capacity of some natural adsorbents, namely rice husk, wood charcoal, tea waste etc. were also investigated and compared with that of open burnt clay.

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Fuller's earth and fired clay as adsorbents for dyestuffs

Cited by 371 publications

References 10 publications

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

Biodecolorization and Bioremediation of Denim Industrial Wastewater by Adapted Bacterial Consortium Immobilized on Inert Polyurethane Foam (PUF) Matrix: A First Approach with Biobarrier Model

Removal of Methylene Blue From Aqueous Solution Using Ghassoul, a Low-Cost Adsorbent

Potentiality of open burnt clay as an adsorbent for the removal of Congo red from aqueous solution

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