Removal of basic dyes from aqueous solutions using coconut hard shell powder as a sorbent

Pollution Research Laboratory, Department of Applied Chemistry, Institute of Technology,
Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India

Department of Biochemistry, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India

E-mail : hasanitbhu@yahoo.co.in

Manuscript received 11 May 2004, revised 19 September 2006, accepted 25 September 2006

The potentiality of sorbent coconut hard shell powder (CUSP) has been investigated as an effective sorbent to removal of malachite green and crystal violet from aqueous solutions.The maximum removal of malachite green and crystal violet have been found at \(p\)H 10.5 and 10.2, initial dyes concentration 5 mg L -t and temperature 30 °C, respectively. The effects of different parameters such as contact-time, particle diameter of the sorbent, dyes concentration,pH of the solution and temperature have been investigated.