16 Fantastic Floating Weeds and How to Use Them
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hyacinth is greater with removal recovery of 18% mainly pertaining to its higher
biomass production than the lesser duckweed with removal recovery of only 5%.
However, the climate condition during the course of study was appropriate for water
hyacinth and influenced positively in its removal capacity. The author also concluded
that the growth and survival of water hyacinth is not influenced even at As contamination level of 0.15 mg/L. In similar studies conducted by Alvarado et al. (2008),
Misbahuddin and Fariduddinin (2010), and Taleei et al. (2019) support the conclusion that the water hyacinth signifies as a reliable option for arsenic bioremediation
in water.
16.2.2 Fired Brick Production
Many attempts are employed by engineers and researchers for the construction activities to be sustainable. In consequence, industries have explored strategies to not only
to lessen the waste generation, energy expenditure, and carbon cost but also to subdue
the misuse of scarce natural resources (Salas-Ruiz et al. 2019). Highly productive
soil is among the valuable raw material utilized for manufacturing of bricks for many
decades. The brick manufacturing industry requires economic transformations to utilize maximum amount of waste and for making brick production a sustainable one.
There have been many reports that attempted the utilization of solid wastes for manufacturing bricks and thereby recycling the waste materials. Goel and Kalamdhad
(2017) looked for the experimental feasibility to illustrate the utilization of organic
wastes (water hyacinth and water hyacinth compost) for fired brick production. The
bricks produced were subjected to physical, chemical/mineralogical characterization
to find the quantity of the weed to be added in the bricks without compromising with
its compressive strength, minimization of water adsorption, etc., according to the
Indian (IS codes) and American society for testing and materials (ASTM) standards.
X-ray powder diffraction (XRD) further confirmed that the composition of the bricks
was not altered by the addition of water hyacinth but it only made the material porous.
A maximum of 10% water hyacinth (at 900 °C) as a partial replacement to the soil
was recommended to apply for brick production. During firing of the bricks, CO 2
emission was found to be significant and an approximately 7% net saving in the fuel
consumption was calculated for every 10% addition of water hyacinth to the soil
(Goel and Kalamdhad 2018).
16.2.2.1 As a Cement Composite
Water hyacinth, considered as an aquatic weed worldwide, has very low density petioles which on blending with cement proves to be a novel insulation building material.
The low density of water hyacinth petiole (WHP) pertains to its anatomy/structure
and turns out to be a principle characteristic in terms of thermal properties of water
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