Inorganic aluminum or iron salts have been used for many decades to coagulate colloidal particles in surface water prior to flocculation, sedimentation and/or filtration. Although effective, inorganic coagulants have several disadvantages including large chemical dosages required for treating eutrophic waters, large volumes of chemical sludge produced, and toxic effects of metallic coagulants on the aquatic environment. Chitosan is a natural cellulose-like copolymer of glucosamine and N-acetyl-glucosamine. Because of their biodegradability chitosan-based materials have been suggested as a more eco-friendly coagulant for water and wastewater treatment. Chitosan was an effective coagulant in several prior laboratory studies. Practical application of chitosan as a drinking water treatment coagulant is evaluated here through a series of jar tests. The effectiveness of chitosan is compared to aluminum sulphate and ferric chloride with regard to treatment of algal-ladened waters. The optimum chemical dose for coagulation, optimum pH, and effectiveness for algae removal was determined for each coagulant. Practical aspects of applying chitosan at full-scale and the impact of feeding this chemical on overall treated water quality are addressed.
| Published in | American Journal of Civil Engineering (Volume 4, Issue 5) |
| DOI | 10.11648/j.ajce.20160405.11 |
| Page(s) | 205-215 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2016. Published by Science Publishing Group |
Chitosan, Coagulation, Water Treatment
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APA Style
Frederick W. Pontius. (2016). Chitosan as a Drinking Water Treatment Coagulant. American Journal of Civil Engineering, 4(5), 205-215. https://doi.org/10.11648/j.ajce.20160405.11
ACS Style
Frederick W. Pontius. Chitosan as a Drinking Water Treatment Coagulant. Am. J. Civ. Eng. 2016, 4(5), 205-215. doi: 10.11648/j.ajce.20160405.11
AMA Style
Frederick W. Pontius. Chitosan as a Drinking Water Treatment Coagulant. Am J Civ Eng. 2016;4(5):205-215. doi: 10.11648/j.ajce.20160405.11
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Download@article{10.11648/j.ajce.20160405.11,
author = {Frederick W. Pontius},
title = {Chitosan as a Drinking Water Treatment Coagulant},
journal = {American Journal of Civil Engineering},
volume = {4},
number = {5},
pages = {205-215},
doi = {10.11648/j.ajce.20160405.11},
url = {https://doi.org/10.11648/j.ajce.20160405.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20160405.11},
abstract = {Inorganic aluminum or iron salts have been used for many decades to coagulate colloidal particles in surface water prior to flocculation, sedimentation and/or filtration. Although effective, inorganic coagulants have several disadvantages including large chemical dosages required for treating eutrophic waters, large volumes of chemical sludge produced, and toxic effects of metallic coagulants on the aquatic environment. Chitosan is a natural cellulose-like copolymer of glucosamine and N-acetyl-glucosamine. Because of their biodegradability chitosan-based materials have been suggested as a more eco-friendly coagulant for water and wastewater treatment. Chitosan was an effective coagulant in several prior laboratory studies. Practical application of chitosan as a drinking water treatment coagulant is evaluated here through a series of jar tests. The effectiveness of chitosan is compared to aluminum sulphate and ferric chloride with regard to treatment of algal-ladened waters. The optimum chemical dose for coagulation, optimum pH, and effectiveness for algae removal was determined for each coagulant. Practical aspects of applying chitosan at full-scale and the impact of feeding this chemical on overall treated water quality are addressed.},
year = {2016}
}
TY - JOUR T1 - Chitosan as a Drinking Water Treatment Coagulant AU - Frederick W. Pontius Y1 - 2016/07/15 PY - 2016 N1 - https://doi.org/10.11648/j.ajce.20160405.11 DO - 10.11648/j.ajce.20160405.11 T2 - American Journal of Civil Engineering JF - American Journal of Civil Engineering JO - American Journal of Civil Engineering SP - 205 EP - 215 PB - Science Publishing Group SN - 2330-8737 UR - https://doi.org/10.11648/j.ajce.20160405.11 AB - Inorganic aluminum or iron salts have been used for many decades to coagulate colloidal particles in surface water prior to flocculation, sedimentation and/or filtration. Although effective, inorganic coagulants have several disadvantages including large chemical dosages required for treating eutrophic waters, large volumes of chemical sludge produced, and toxic effects of metallic coagulants on the aquatic environment. Chitosan is a natural cellulose-like copolymer of glucosamine and N-acetyl-glucosamine. Because of their biodegradability chitosan-based materials have been suggested as a more eco-friendly coagulant for water and wastewater treatment. Chitosan was an effective coagulant in several prior laboratory studies. Practical application of chitosan as a drinking water treatment coagulant is evaluated here through a series of jar tests. The effectiveness of chitosan is compared to aluminum sulphate and ferric chloride with regard to treatment of algal-ladened waters. The optimum chemical dose for coagulation, optimum pH, and effectiveness for algae removal was determined for each coagulant. Practical aspects of applying chitosan at full-scale and the impact of feeding this chemical on overall treated water quality are addressed. VL - 4 IS - 5 ER -
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