Journal
DESALINATION AND WATER TREATMENT
Volume 57, Issue 26, Pages 12385-12395Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/19443994.2015.1049959
Keywords
Spent mushroom compost (SMC); Fluoride; Adsorption; Aluminum hydroxide; Drinking water
Categories
Funding
- Earmarked Fund for Modern Agro-industry Technology Research System in Tea Industry (Ministry of Agriculture of P.R. China) [CARS-23]
- Natural Science Foundation of Anhui Province [1408085MKL38]
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A low-cost and highly efficient biosorbent for the removal of fluoride from drinking water from spent mushroom compost (SMC) that was carbonized (spent mushroom compostbiochar, SMCB) coated by aluminum hydroxide. Adsorption studies were performed to investigate the influence of adsorbent dosage, initial fluoride concentration, contact time, pH, and coexisting ions on fluoride adsorption. The fluoride adsorption capacity of the coated SMCB was greater than that of uncoated SMCB. Fluoride adsorption by coated SMCB followed the Langmuir isotherm model, and the maximum adsorption capacity was 36.5mg/g. The fluoride concentration could be reduced to below 1mg/L from an initial fluoride concentration of 10mg/L. While the pH of the solution did play an important role in the fluoride removal capacity, with the SMCB performed well under a wide pH range, from 6.0 to 8.0. These findings indicate that fluoride can effectively be removed from drinking water using modified mushroom cultivation waste biomass.
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