Table 3. Comparison of maximum sorption capacity of Groundnut hull with other sorbents.

Biosorbent

q_max Pb(II)
(mg g^-1)

q_max Cr(VI)
(mg g^-1)

Reference

 Ficus religiosa leaves

 Caulerpa lentillifera

 bagasse fly ash

 Coir

 Aspergilus niger

 Coconut shell charcoal

 Coconut husk fibers

 sugar beat pulp

 Maize cob

 sugar cane bagasse

 Groundnut hull

   37.45

   29.0

     2.5

   18.9

   10.1

   -

   -

   -

   -

   -

   31.54

   26.25

   -

     4.35

   -

   -

     4.05

   29.0

   17.2

   13.8

   13.4

   30.21

Qaiser et al. 2007

Apiratikul and Pavasant, 2008

Gupta and Ali, 2004

Conrad and Hansen, 2007

Kapoor et al. 1999

Babel and Kurniawan, 2004

Tan et al. 1993

Sharma and Forster, 1994

Sharma and Forster, 1994

Sharma and Forster, 1994

Qaiser et al. 2009 (As published)