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Adsorption of Basic Dye and Reactive Dye by Kaolin Coated with Chitosan

Name: ʹ¸ÔÃѵ¹ì ¡ÅÑ蹡Ãͧ

Name: Sonthirat Klankrong

Organization : ÁËÒÇÔ·ÂÒÅÑÂà·¤â¹âÅÂÕ¾ÃШÍÁà¡ÅéÒ¸¹ºØÃÕ. ¤³Ð¾Åѧ§Ò¹ÊÔè§áÇ´ÅéÍÁáÅÐÇÑÊ´Ø. ÊÒ¢ÒÇÔªÒà·¤â¹âÅÂÕÊÔè§áÇ´ÅéÍÁ

keyword: à¤âÍÅÔ¹

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; ÊÕÂéÍÁÃÕáͤ·Õ¿

Abstract: This stydy aims to investigate the adsorption capacity for the removal of basic red 14 and reactive red I41 by ltaolin coated with chitosan and compare to uncoated kaolin. The chitosan flakes 90% deacetylated was homogenized in acetic acid by varying the c11itosan:acetic acid ratio of 0.5:1, 1:l and 1.5:1 to make chitosan gel solutions. Each solution was used to coat on kaolin with the Itaoln:cltosairatio of 5:1. Results from SEM revealed that chitosan had been coated on kclolin and thc amount of chjtosan increased with the chitosan:acetic acid. The FTIR-spectrum shows the difference peaks between uncoated kaolin and chitosan coated kaolin. The chitosail coated kaolin has got amino group fi-om chitosan. The values of pH of solution (pHSo,) and pH of zero point of charge (pH,,,') were arou~ld 7 for both of coated and uncoated kaolin. Investigation of adsorption capacity using adsorption isotherm revealed that uncoated kaolin couId increase adsorption capacity for thc removal of basic dye, whereas the chitosan coated kaolin gave maximum adsorption capacity for tltc I-cmoval of reactive dye.Resu1ts also showed that the highest adsorption capacity of coated and ~rilcoated kaolin occurred at pH of 9 and 5 for the removal of basic dye and reactive dye, respectively. Results ti-om desorption studies sllowed that the uncoated kaolin is more effective than the coated kaolin for the desorption of reactive dye. On the other hand, the coated ltaolin could desorb basic dye better than the uncoated kaolin does.

ÁËÒÇÔ·ÂÒÅÑÂà·¤â¹âÅÂÕ¾ÃШÍÁà¡ÅéÒ¸¹ºØÃÕ. ÊӹѡËÍÊÁØ´

Address: ¡Ãا෾ÁËÒ¹¤Ã

Email: info.lib@mail.kmutt.ac.th

Name: ÊÃéÍ´ÒÇ ÇÔ¹Ô¨¹Ñ¹·Ãѵ¹ì

Role: ÍÒ¨ÒÃÂì·Õè»ÃÖ¡ÉÒ

Created: 2547

Issued: 2007-12-19

Modified: 2558-08-02

ÇÔ·ÂÒ¹Ô¾¹¸ì/Thesis

CallNumber: EV464

tha

DegreeName: ÇÔ·ÂÒÈÒʵÃÁËҺѳ±Ôµ

Level: »ÃÔ­­Òâ·

Descipline: à·¤â¹âÅÂÕÊÔè§áÇ´ÅéÍÁ

Grantor: ÁËÒÇÔ·ÂÒÅÑÂà·¤â¹âÅÂÕ¾ÃШÍÁà¡ÅéÒ¸¹ºØÃÕ

©copyrights ÁËÒÇÔ·ÂÒÅÑÂà·¤â¹âÅÂÕ¾ÃШÍÁà¡ÅéÒ¸¹ºØÃÕ

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3	EV464ab.txt	1.83 KB	149	2024-03-15 15:12:39

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