Synthesis, characterization and application of new adsorbent composites based on sol-gel/chitosan for the removal of soluble substance in water

被引：3

作者：

de Mello, Jonatan Rafael ^{[1
]}

Machado, Thais Strieder ^{[2
]}

Crestani, Larissa ^{[3
]}

Alessandretti, Ingridy ^{[3
]}

Marchezi, Giovana ^{[3
]}

Melara, Flavia ^{[2
]}

Mignoni, Marcelo Luis ^{[4
]}

Piccin, Jeferson Steffanello ^{[1
,2
,3
]}

机构：

[1] Univ Passo Fundo, Fac Agron & Vet Med, Postgrad Food Sci & Technol, BR 285,Km 171, Passo Fundo, RS, Brazil

[2] Univ Passo Fundo, Fac Engn & Architecture, Postgrad Civil & Environm Engn, BR 285,Km 171, Passo Fundo, RS, Brazil

[3] Univ Passo Fundo, Fac Engn & Architecture, Chem Engn Course, BR 285,Km 171, Passo Fundo, RS, Brazil

[4] Univ Reg Integrated Alto Uruguay & Missions, Dept Food & Chem Engn, Ave Sete Setembro 1621, Erechim, RS, Brazil

来源：

HELIYON | 2022年 / 8卷 / 05期

关键词：

Xerogel; TEOS; Amine groupings; Tartrazine yellow; Adsorption; ACTIVATED CARBON; AQUEOUS-SOLUTION; ADSORPTION; CHITOSAN; DEACETYLATION; DYE; ISOTHERMS; KINETICS; SORPTION; WASTE;

D O I：

10.1016/j.heliyon.2022.e09444

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this work, new adsorbent composites from the silica precursor tetraethyl orthosilicate (TEOS) and chitosan have been successfully synthesized, denominated 20%Chi, 30%Chi and 40%Chi. The composites presented enhanced chemical and physical characteristics, with emphasis on the high surface areas between 374.94 m2/g to 886.31 m2/g. The application of the composites in the model system (TY - Tartrazine yellow dye), presented adsorption capacities dependent on the amount of chitosan in the composite (40%Chi > 30%Chi > 20%Chi). However, from the experimental data of the constituent materials, 30%Chi provided the greatest increase in the adsorption capacity in the monolayer, with values of 36%. This demonstrates that the amount of chitosan in the compound alters the arrangement of adsorption sites. The 30%Chi composite presented life cycle superior to 10 reuse cycles.

引用

页数：11

共 79 条

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