Next Article in Journal
Lime Pretreatment of Miscanthus: Impact on BMP and Batch Dry Co-Digestion with Cattle Manure
Next Article in Special Issue
Influence of Extraction Conditions on Ultrasound-Assisted Recovery of Bioactive Phenolics from Blueberry Pomace and Their Antioxidant Activity
Previous Article in Journal
Spectral Characterization and Molecular Dynamics Simulation of Pesticides Based on Terahertz Time-Domain Spectra Analyses and Density Functional Theory (DFT) Calculations
Previous Article in Special Issue
Process Optimization, Characterization and Antioxidant Capacity of Oat (Avena Sativa L.) Bran Oil Extracted by Subcritical Butane Extraction
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Molecules 2018, 23(7), 1606; https://doi.org/10.3390/molecules23071606

Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water

1
Fermentation Technology Division, Huanghuai University, Zhumadian 463000, China
2
Henan Dongfangrun Environmental Protection Technology Co. Ltd., Zhumadian 463000, China
*
Author to whom correspondence should be addressed.
Academic Editors: Elena Ibañez and Farid Chemat
Received: 6 June 2018 / Revised: 24 June 2018 / Accepted: 25 June 2018 / Published: 2 July 2018
(This article belongs to the Special Issue Green Extraction, Separation and Purification Processes)
Full-Text   |   PDF [3301 KB, uploaded 2 July 2018]   |  

Abstract

The present study investigated the adsorptive and enzymatic removal of aniline blue dye (AB) from aqueous solution using waxy riceprocessing waste (RW), peanut shell (PS), microbial waste of Aspergillus niger (MW) as low cost adsorbents, and laccase (Lac) as a biocatalyst. Commercial activated carbon (AC) was also employed to compare the adsorption performance with the three adsorbents. Dye removal was examined under various parameters in batch experiments. It was found that dye removal by RW and Lac was 89–94% noticeably better than that by MW and PS (20–70%). In any cases, AC produced the highest dye removal among the tested materials. The kinetics, isotherms, and thermodynamics were then analyzed to elucidate the adsorption process by the four adsorbents. The pseudo-second order kinetic was superior to the pseudo first order kinetic model in describing adsorption for all adsorbents. The Langmuir model fitted the adsorption process very well, indicating monolayer coverage of dyes on a solid surface. A thermodynamic analysis of enthalpy (ΔH°), entropy (ΔS°), and Gibbs free energy (ΔG°) classified the adsorption as a nonspontaneous and endothermic process. The results reveal diverse natural materials (e.g., processing waste RW) as novel substitutes for traditional activated carbon, as well as laccase as a green catalyst for the treatment of dye wastewater. View Full-Text
Keywords: adsorption; adsorbent; laccase; aniline blue; dye removal adsorption; adsorbent; laccase; aniline blue; dye removal
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

You, X.; Li, E.; Liu, J.; Li, S. Using Natural Biomacromolecules for Adsorptive and Enzymatic Removal of Aniline Blue from Water. Molecules 2018, 23, 1606.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top