Modified coconut coir dust as cation exchanger

Date

10-1997

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Evelyn B. Rodriguez

Abstract

ABSTRACT

Navarro, Maria Fe P. 1997. University of the Philippines at Los Banos, College, Laguna. Modified Coconut Coir Dust as Cation Exchanger.

Adviser: Evelyn B. Rodriguez, Ph. D.

Co-adviser:. Maxima Flavier, Ph. D.

Carboxymethylated cation exchangers CLC and CLB were prepared from coconut our dust by using chloroacetic acid and bromoacetic acid as etherifying reagents, respectively. CLC and CLB were subjected to infrared spectroscopic analysis. The 112 spectrum of CLB showed strong peaks at 1627 cm.' and 1426 cm.' which are due to asymmetric and symmetric stretching bands of carboxylate group (-COO) which were absent in the IR spectrum of UCD (untreated coconut coir dust). This indicated the successful introduction of carboxymethyl group in CLB. However, the IR spectrum of CI.0 was poorly resolved so that no conclusion about the success of carboxymethylation could be made.

The cation exchange capacity (CEC) of CLC was found to be 2.28 meq / gram, while that of CLB was 2.79 meal / gram. UCD and CLB were evaluated for their efficiency in removing cadmium (II) and copper (II) from aqueous solutions. CLB effected a 77.8% removal of copper and an 88.0% removal of cadmium. As expected, UCD had a lower percent removal - 28.9% for copper (II) and 29.0./0 for cadmium (II).

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 C4 1997 N38

Document Type

Thesis

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