Synthesis and Evaluation of New Environment-Friendly Starch Hydroxypropyl Phosphate as Flocculant - Egyptian Knowledge Bank

1121

Synthesis and Evaluation of New Environment-Friendly Starch Hydroxypropyl Phosphate as Flocculant

Article

Last updated: 01 Jan 2025

Subjects

Abstract

PHOSPHATE adduct, namely, 2-hydroxy-3-chloropropylphosphate was reacted with starch in presence of sodium hydroxide catalyst according to the dry process to yield starch hydroxypropyl phosphate. The reaction was conducted under a variety of conditions and the extent of reaction expressed as DS (degree of substitution), was found to rely on catalyst concentration and phosphate adduct concentration as well as duration and temperature of the reaction. In this way starch molecules bearing different amounts of hydroxypropyl phosphate groups could be achieved. Evaluation of these starch hydroxypropyl phosphates as flocculant for ferric laurate and kaolin was performed under different conditions including dose, phosphorus content, pH of the flocculation and molar mass. The results obtained advocate the namely synthesized starch hydroxypropyl phosphates as a good candidate for flocculation vis-à-vis the well known poly(acrylamide-co-acrylic acid) which is used as industrial flocculant.

DOI

10.21608/ejchem.2013.1121

Keywords

flocculation, Ferric laurate, kaolin, Poly(acrylamide-co-acrylic acid) and Starch hydroxpropyl phosphate

Volume

Article Issue

Related Issue

268

Issue Date

2013-12-01

Receive Date

2013-11-20

Publish Date

2013-12-30

Page Start

417

Page End

433

Print ISSN

0449-2285

Online ISSN

2357-0245

Article File

EJCHEM_Volume 56_Issue 5_Pages 417-433.pdf

PDF . 550.9kB

Link

https://ejchem.journals.ekb.eg/article_1121.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=1121

Order

Type Code

292

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle