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Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii

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Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake, Jiangsu Key Construction Laboratory for Food Safe and Nutritional Function, School of Life Science, Huaiyin Normal University, Changjiang West Road 111, Huai’an 223300, China
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Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, Huaiyin Normal University, Changjiang West Road 111, Huai’an 223300, China
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Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(5), 679; https://doi.org/10.3390/ijerph16050679
Received: 8 January 2019 / Revised: 16 February 2019 / Accepted: 21 February 2019 / Published: 26 February 2019
(This article belongs to the Section Environmental Science and Engineering)
Dyeing wastewater is very hard to treat, and adsorption could be a good choice. Spent substrate of Pleurotus eryngii (SSPE) was first used to adsorb malachite green, safranine T and methylene blue from aqueous solutions, and the corresponding adsorption isotherm, thermodynamics and dynamics models were simulated. More than 93% of the dyes were removed with solutions with 100 mg/L of initial dye concentration, 1 g of SSPE and pH of 6.0 after adsorption for 4 h. Freundlich isotherm models fit better the adsorption data than Langmuir models. Adsorption of the dyes onto SSPE was a spontaneous exothermic process based on an adsorption thermodynamics model. SSPE could adsorb the dyes rapidly, and a second-order kinetics model fit better with the adsorption data than a pseudo first-order kinetics model. Accordingly, SSPE could be a good bio-adsorbent for the removal of malachite green, safranine T and methylene blue from the aqueous solution. View Full-Text
Keywords: bio-adsorption; thermodynamics; isotherms; kinetics; spent mushroom substrate bio-adsorption; thermodynamics; isotherms; kinetics; spent mushroom substrate
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MDPI and ACS Style

Wu, J.; Xia, A.; Chen, C.; Feng, L.; Su, X.; Wang, X. Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii. Int. J. Environ. Res. Public Health 2019, 16, 679. https://doi.org/10.3390/ijerph16050679

AMA Style

Wu J, Xia A, Chen C, Feng L, Su X, Wang X. Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii. International Journal of Environmental Research and Public Health. 2019; 16(5):679. https://doi.org/10.3390/ijerph16050679

Chicago/Turabian Style

Wu, Jianguo, Aiqiang Xia, Chunyan Chen, Liuying Feng, Xiaohui Su, and Xinfeng Wang. 2019. "Adsorption Thermodynamics and Dynamics of Three Typical Dyes onto Bio-adsorbent Spent Substrate of Pleurotus eryngii" International Journal of Environmental Research and Public Health 16, no. 5: 679. https://doi.org/10.3390/ijerph16050679

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