Heat Absorbing Glass From Rice Husk Ash
For A Sustainable Environment
Author(s)
G. Berkin
Abstract
Rice growing countries are having environmental problems eliminating large
amounts of rice husks. rice husks are the by-product of rice paddy. Rice husks
are burnt in the boilers for processing paddy. About 20 million tones of rice husk
ash are produced annually. This is a great environmental threat causing damage
to the land and the surrounding area in which it is dumped. Lots of ways are
being thought of for disposing rice husk ash by recycling it into building
materials. Rice husk ash consists of 95% silica and 5% metal ions (iron,
aluminum, etc.) The particle size is 25 microns. This material is being used as a
refractory brick as it has a good radiation absorption property. It has been used
for insulation of molten metal in tundish and ladle in slab caster since it is an
excellent insulator and as a pozzolana in the concrete. Silica is the major raw
material in the glass composition. The glass industry obtains sand from sea
coasts and riverbeds. This causes decline on the ecology of nektons and other
organisms. Rice husk ash may be used instead of silica to prevent any sand
erosion.
In this research rice husk ash has been used instead of sand in the glass
composition. The result is a gray colored ‘heat absorbing glass’. This study
suggests that heat absorbing glass from rice husk ash helps stabilizing build
environment and soil ecology by means of waste utilisation. Producing glass
from this material helps to solve a number of environmental problems. Heat
absorbing glass would enable better heat control in buildings and therefore this
ecological synthesis would create a sustainable environment.
Keywords: rice husk ash, heat absorbing glass, sand, silica, iron, aluminum,
refractory, insulator, radiation, sustainable environment.
Keywords
rice husk ash, heat absorbing glass, sand, silica, iron, aluminum,
refractory, insulator, radiation, sustainable environment.
Related Book
Other papers in this volume
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