@article{(Open Science Index):https://publications.waset.org/pdf/11867,
	  title     = {Removal of Pb (II) from Aqueous Solutions using Fuller's Earth},
	  author    = {Tarun Kumar Naiya and  Biswajit Singha and  Ashim Kumar Bhattacharya and  Sudip Kumar Das},
	  country	= {},
	  institution	= {},
	  abstract     = {Fuller’s earth is a fine-grained, naturally occurring substance that has a substantial ability to adsorb impurities. In the present study Fuller’s earth has been characterized and used for the removal of Pb(II) from aqueous solution. The effect of various physicochemical parameters such as pH, adsorbent dosage and shaking time on adsorption were studied. The result of the equilibrium studies showed that the solution pH was the key factor affecting the adsorption. The optimum pH for adsorption was 5. Kinetics data for the adsorption of Pb(II) was best described by pseudo-second order model. The effective diffusion co-efficient for Pb(II) adsorption was of the order of 10-8 m2/s. The adsorption data for metal adsorption can be well described by Langmuir adsorption isotherm. The maximum uptake of metal was 103.3 mg/g of adsorbent. Mass transfer analysis was also carried out for the adsorption process. The values of mass transfer coefficients obtained from the study indicate that the velocity of the adsorbate transport from bulk to the solid phase was quite fast. The mean sorption energy calculated from Dubinin-Radushkevich isotherm indicated that the metal adsorption process was chemical in nature. 
},
	    journal   = {International Journal of Chemical and Molecular Engineering},
	  volume    = {6},
	  number    = {7},
	  year      = {2012},
	  pages     = {452 - 456},
	  ee        = {https://publications.waset.org/pdf/11867},
	  url   	= {https://publications.waset.org/vol/67},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 67, 2012},
	}