Efficiency of unactivated rice husk ash as an adsorption material in the water supply treatment of UPLB

Date

6-2015

Degree

Bachelor of Science in Civil Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Perlie P. Velasco

Abstract

Scarcity of clean and fresh water in the Philippines is one of the most eminent conflict that the Philippines could face. Adsorption is one of the most promising technique of water disinfection which could help in solving the problem in the availability of clean water considering a need for low cost water treatment technology. Rice husk ash as adsorbents obtained from uncontrolled burning were used in the study to remove unnecessary microbiological organism specifically Escherichia Coli and Total Plate Count. A proximate analysis was done to determine the percent total ash and moisture content of the RHA. The efficiency of the adsorbent was analyzed by using ten water samples obtained from one of the deep wells in UPLB by mixing a known set of dosage of RHA with different contact times. Total Plate Count vs. contact time was plotted and the adsorption equilibrium was determined to be 9 hours. Percent removal was computed and plotted with respect to contact time which yields a maximum of 52% removal rate. Applying adsorption kinetics, the rate constant and order of the kinetic equation was identified to be 0.0614 and 2/3 respectively. Using the equilibrium residence time, an adsorption tank was designed and a remodeled of water treatment system was projected.

Language

English

Location

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

Call Number

LG 993.5 2015 E63 /D46

Document Type

Thesis

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