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Removal of phosphate from aqueous solutions and sewage using natural and surface modified coir pith.
J Hazard Mater. 2008 Apr 01; 152(2):527-35.JH

Abstract

Iron impregnated coir pith (CP-Fe-I) can be effectively used for the removal of phosphate from aqueous streams and sewage. Iron impregnation on natural coir pith was carried out by drop by drop addition method. The effect of various factors such as pH, initial concentration of phosphate, contact time and adsorbent dose on phosphate adsorption was studied by batch technique. The pH at 3.0 favored the maximum adsorption of phosphate from aqueous solutions. The effect of pH on phosphate adsorption was explained by pH(zpc), phosphate speciation in solution and affinity of anions towards the adsorbent sites. A comparative study of the adsorption of phosphate using CP-Fe-I and CP (coir pith) was made and results show that the former one is five to six times more effective than the latter. Kinetic studies revealed that the adsorption process followed a pseudo-second order kinetic model. Adsorption followed Langmuir isotherm model. Column studies were conducted to examine the utility of the investigated adsorbent for the removal of phosphate from continuously flowing aqueous solutions.

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Authors+Show Affiliations

Krishnan KA
Environmental Technology, Regional Research Laboratory (CSIR), Industrial Estate Post, Thiruvananthapuram 695 019, India. sreeanoop@rediffmail.com
Haridas A
No affiliation info available

MeSH

AdsorptionCelluloseCocosLigninPhosphatesSewageWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17706344

Citation

Krishnan, K Anoop, and Ajit Haridas. "Removal of Phosphate From Aqueous Solutions and Sewage Using Natural and Surface Modified Coir Pith." Journal of Hazardous Materials, vol. 152, no. 2, 2008, pp. 527-35.
Krishnan KA, Haridas A. Removal of phosphate from aqueous solutions and sewage using natural and surface modified coir pith. J Hazard Mater. 2008;152(2):527-35.
Krishnan, K. A., & Haridas, A. (2008). Removal of phosphate from aqueous solutions and sewage using natural and surface modified coir pith. Journal of Hazardous Materials, 152(2), 527-35.
Krishnan KA, Haridas A. Removal of Phosphate From Aqueous Solutions and Sewage Using Natural and Surface Modified Coir Pith. J Hazard Mater. 2008 Apr 1;152(2):527-35. PubMed PMID: 17706344.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of phosphate from aqueous solutions and sewage using natural and surface modified coir pith. AU - Krishnan,K Anoop, AU - Haridas,Ajit, Y1 - 2007/07/10/ PY - 2006/12/22/received PY - 2007/04/24/revised PY - 2007/07/05/accepted PY - 2007/8/21/pubmed PY - 2008/7/3/medline PY - 2007/8/21/entrez SP - 527 EP - 35 JF - Journal of hazardous materials JO - J Hazard Mater VL - 152 IS - 2 N2 - Iron impregnated coir pith (CP-Fe-I) can be effectively used for the removal of phosphate from aqueous streams and sewage. Iron impregnation on natural coir pith was carried out by drop by drop addition method. The effect of various factors such as pH, initial concentration of phosphate, contact time and adsorbent dose on phosphate adsorption was studied by batch technique. The pH at 3.0 favored the maximum adsorption of phosphate from aqueous solutions. The effect of pH on phosphate adsorption was explained by pH(zpc), phosphate speciation in solution and affinity of anions towards the adsorbent sites. A comparative study of the adsorption of phosphate using CP-Fe-I and CP (coir pith) was made and results show that the former one is five to six times more effective than the latter. Kinetic studies revealed that the adsorption process followed a pseudo-second order kinetic model. Adsorption followed Langmuir isotherm model. Column studies were conducted to examine the utility of the investigated adsorbent for the removal of phosphate from continuously flowing aqueous solutions. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17706344/Removal_of_phosphate_from_aqueous_solutions_and_sewage_using_natural_and_surface_modified_coir_pith_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)01009-6 DB - PRIME DP - Unbound Medicine ER -