Adsoption of simulated wastewater containing mercury using modified nata de coco (Nata de coco xanthate)

Date

2-2016

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Marilyn C. Del Barrio

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

Modification of nata de coco by introducing xanthate groups was conducted to improve its physical stability and its capacity for removing mercury from aqueous solutions. Nata de coco canthate was found effective at a wide pH range for Hg2+ removal. Quantitative results showed that optimum adsorptve capacities were attained at pH 4 to 5 for nata de coco and pH 4 to 6 for nata de coco xanthate. The maximum mercurial removal efficiency of 0.015 g nata de coco was found out to be about 85.99% in 20 mL solution containing initially 10 ppm Hg2+ adjusted to pH 4. For 0.015 g nata de coco xanthate, 90.15% removal was attained at the same conditions at pH 5. The maximum adsorptive capacities for both adsorbents were found to be 20.492 mg Hg 2+ per gram nata de coco and 28.902 mg Hg2+ per gram nata de coco xanthate using linearized Langmuir equation. Furthermore, the stability constants were found out to be 1.006 L/mg for nata de coco and 0.832 L/mg for nata de coco xanthate. The Langmuir isotherm was used in the determination of thermodynamic parameters since it gave higher correlation coefficient of nata de coco xanthate than the Freundlich isotherm.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2016 E62 /L86

Document Type

Thesis

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