Development of adsorbent rigid structure based on Spirulina sp./chitosan bioblends coatings for dye adsorption in fixed bed column

被引:3
作者
Vieira, Mery L. G. [1 ]
Pinheiro, Claudio P. [1 ]
Silva, Keli A. [1 ]
Cadaval, Tito R. S., Jr. [1 ]
Dotto, Guilherme L. [2 ]
Pinto, Luiz A. A. [1 ]
机构
[1] Fed Univ Rio Grande FURG, Sch Chem & Food, Ind Technol Lab, Km 8 Italia Ave, BR-96203900 Rio Grande, RS, Brazil
[2] Fed Univ Santa Maria UFSM, Chem Engn Dept, Environm Proc Lab, 1000 Roraima Ave, BR-97105900 Santa Maria, RS, Brazil
关键词
Bioblends; Dyes adsorption; Particles coating; Fixed bed column; AQUEOUS-SOLUTION; METHYLENE-BLUE; FOOD DYES; CHITOSAN; REMOVAL; DEACETYLATION; NANOPARTICLES; PLATENSIS; OPTIMIZATION; BIOSORPTION;
D O I
10.1007/s11356-022-21372-x
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The glass particles were coated with Spirulina sp. LEB-18 and bioblends of Spirulina sp. LEB-18/chitosan by casting technique and, afterward, it was verified its potential as adsorbents for basic and acid dyes. Nine Spirulina sp. suspensions with different components were used to coat the glass particles, and in the best condition of coating were prepared the bioblends with chitosan. The coated glass particles with Spirulina sp. and its bioblends with chitosan were applied in adsorption of the allura red (acid) and methylene blue (basic) dyes in a batch operation evaluate the pH effect, and a fixed bed column operation, being evaluated to the removal percentage and adsorption capacity of the column. The glass particles coated with Spirulina sp. applied in batch adsorption showed the highest removal percentages for allura red dye (35 to 45%) at pH 4.0, and for methylene blue dye (35 to 80%) at pH 6.0 and 8.0. In fixed bed column using glass particles coated with bioblends were reached the amount dye of 54.2 mg of adsorbed allura red dye and 60.2 mg of the of adsorbed methylene blue dye, respectively. Moreover, it was found good dye adsorption capacities, around 89 mg g(-1), for both dyes, in acidic and basic pH values. Based on these results, these bioblends coated glass particles can be applied as an adsorbent for different types of dyes in adsorption column.
引用
收藏
页码:79466 / 79477
页数:12
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