Cellulose nanocrystal-reinforced keratin bioadsorbent for effective removal of dyes from aqueous solution.

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Abstract

High-efficiency and recyclable three-dimensional bioadsorbents were prepared by incorporating cellulose nanocrystal (CNC) as reinforcements in keratin sponge matrix to remove dyes from aqueous solution. Adsorption performance of dyes by CNC-reinforced keratin bioadsorbent was improved significantly as a result of adding CNC as filler. Batch adsorption results showed that the adsorption capacities for Reactive Black 5 and Direct Red 80 by the bioadsorbent were 1201 and 1070mgg(-1), respectively. The isotherms and kinetics for adsorption of both dyes on bioadsorbent followed the Langmuir isotherm model and pseudo-second order model, respectively. Desorption and regeneration experiments showed that the removal efficiencies of the bioadsorbent for both dyes could remain above 80% at the fifth recycling cycles. Moreover, the bioadsorbent possessed excellent packed-bed column operation performance. Those results suggested that the adsorbent could be considered as a high-performance and promising candidate for dye wastewater treatment.

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Author and article information

Journal

Journal ID (iso-abbrev): Bioresour. Technol.

Title: Bioresource technology

Publisher: Elsevier BV

ISSN (Electronic): 1873-2976

ISSN (Print): 0960-8524

Publication date (Electronic): May 2017

Volume: 232

Affiliations

[1 ] Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China; Department of Textiles, Merchandising and Fashion Design, 234, HECO Building, University of Nebraska-Lincoln, Lincoln, NE 68583-0802, United States.

[2 ] Department of Textiles, Merchandising and Fashion Design, 234, HECO Building, University of Nebraska-Lincoln, Lincoln, NE 68583-0802, United States.

[3 ] Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE 68583-0915, United States.

[4 ] Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China.

[5 ] Department of Textiles, Merchandising and Fashion Design, 234, HECO Building, University of Nebraska-Lincoln, Lincoln, NE 68583-0802, United States; Department of Biological Systems Engineering, 234, HECO Building, University of Nebraska-Lincoln, Lincoln, NE 68583-0802, United States; Nebraska Center for Materials and Nanoscience, 234, HECO Building, University of Nebraska-Lincoln, Lincoln, NE 68583-0802, United States. Electronic address: yyang2@unl.edu.

Article

Publisher Item ID: S0960-8524(17)30139-6

DOI: 10.1016/j.biortech.2017.01.070

PubMed ID: 28235662

SO-VID: 79be08ca-1a53-4b37-9a24-b8bb8abbdfcb

History

Keywords: Adsorption,Cellulose nanocrystal,Dye wastewater treatment,Keratin adsorbent

Data availability:

Keywords: Adsorption, Cellulose nanocrystal, Dye wastewater treatment, Keratin adsorbent

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