Describe how this polymeric flocculant based on pectin-graft-polyacrylamide-graft-polyacrylic acid works in water treatment. Is it an...
Describe how this polymeric flocculant based on
pectin-graft-polyacrylamide-graft-polyacrylic acid works in water
treatment. Is it an anionic polymer?
*Keep in mind that pecitn makes it solid and that poliacrilic acid
helps the polyacrylamide not to be water-soluble please
Homework Answers
PECTIN AND GRAFTING
- Pectin is a natural polymer used extensively in drug applications.
- Grafting of heteroatoms containing monomers like acrylamide and acrylic acid makes them suitable for use as corrosion inhibitors.
- The grafting certainly improves inhibition efficiency compared to homopolymers namely polyacrylamide and polyacrylic acid.
- The graft polymer containing polyacrylamide provides slightly higher corrosion inhibition efficiency than that of polyacrylic acid containing polymer. This is due to presence of nitrogen heteroatom in polyacrylamide.
HARMFUL EFFECTS OF UNTREATED WATER
Untreated water decreases
- rate of photosynthesis
- interferes gas solubility in water
- dissolved and suspended solids.
- Discoloration of water
- inhibit growth of aquatic biota
- Natural biopolymers based flocculants are extensively used in waste water treatment because of its environmentally friendly nature , low cost and easy availability.
- To protect the aquatic animals from disposal of waste water, it is essential to treat and reuse it.
- Removal of colloidal particles from waste water is challenging job.
Earlier inorganic coagualants like ferric chloride, alum were used for treatment. The major drawback of using them includes formation of sludge as it is to be used in large quantity which finally resulted into disposal problem. To overcome this organic flocculants are used.
FLOCCULATION
A process which destabilizes finely divided particles accelerating to make large flocs which settle sand can be separated from waste water.
- It has been observed that by grafting synthetic polymers onto natural polysaccharide backbone it is possible to develop efficient flocculants with improved flocculant properties.
- It involves use of free radical initiator to generate free radical sites on polysaccharide as well as synthetic monomer.
Add Answer to:
Describe how this polymeric flocculant based on
pectin-graft-polyacrylamide-graft-polyacrylic acid works in water
treatment. Is it an...
Aluminium sulfate (alum) is the most widely used aluminium-based coagulant in water and wastewater treatment. a)...
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coagulant in water and wastewater treatment.
a) Briefly describe how alum
(Al2(SO4)3) addition assists in
water and wastewater treatment.
b) Draw a logC-pH diagram for the aluminium species at
equilibrium with Al(OH)3(s).
c) For the recipe [Al2(SO4)3] =
2 x 10-3 M, what are the pH and the composition of the
system, assuming equilibrium with Al(OH)3(s)?
d) For what total concentration(s) (minimum and/or maximum) of
Al2(SO4)3 is aluminium entirely
soluble?
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Aluminium sulfate (alum) is the most widely used aluminium-based
coagulant in water and wastewater treatment.
a) Briefly describe how alum
(Al2(SO4)3) addition assists in
water and wastewater treatment.
b) Draw a logC-pH diagram for the aluminium species at
equilibrium with Al(OH)3(s).
c) For the recipe [Al2(SO4)3] =
2 x 10-3 M, what are the pH and the composition of the
system, assuming equilibrium with Al(OH)3(s)?
d) For what total concentration(s) (minimum and/or maximum) of
Al2(SO4)3 is aluminium entirely
soluble?
Assume...
1. Describe how much solid NaHCO3 and water you would need to create a 25.0 mL of 0.100 M NaHCO3 solution. Assume the volume does not significantly change when adding the solute. Do the same for 25.0 mL of 0.100 M NaCl solution and 25.0 mL of 0.100 M KNO3 solution. 2. Calculate the total volume of water and of 0.4949 M NH, solution needed to create 25.0 mL of 0.100 M NH3 solution. Also calculate the total volume of...
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1) Write a Reaction equation using 4- aminobenzenesulfulfonic
acid (aniline derivative) and 8-anilino-1-naphthalenesulfonic acid
(coupling agent). Write the mechanism.
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