Efficiency of activated Rice Husk Ash (RHA) as 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

Co-adviser

Michael Vincent O Laurio

Abstract

Water supply of the University of the Philippines Los Baños (UPLB) comes from the groundwater and undergoes sedimentation and disinfection before distribution. The water supply system supplies the offices, dormitories, and facilities inside the campus. According to Corona (2014), it contains unsatisfactory amount of microorganisms and fails to meet the standards for drinking water. Water samples from the water supply of UPLB were subjected to adsorption as additional treatment process in which activated rice husk ash (ARHA), a substitute for activated carbon, was used as adsorbent. Rice Husk Ash was activated using Nitric acid and burned at 800⁰C using a furnace. Kinetic experiment was conducted to observe the adsorption process which showed that the equilibrium time is 24 hrs. Adsorption kinetics was used to describe the adsorption phenomena and it was found out that the order of reaction (n) is of the first order with adsorption constant (k) equal to 0.0056. Result showed that ARHA can effectively adsorb microorganisms in the water up to 96.25%. For the design of a continuous water flow system with a flowrate of 200 gpm, a 144000-gal. or 545.10-m3 adsorption tank, 10000-gal or 68.2-m3 sedimentation basin, and 7000-gal or 26.5-m3 chlorination tank was proposed to be added to the waterworks system of UPLB.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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