Biosorption of fluoride from drinking water using spent mushroom compost biochar coated with aluminum hydroxide

Abstract

2015):Biosorption of fluoride from drinking water using spent mushroom compost biochar coated with aluminum hydroxide, Desalination and Water Treatment, 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 compost biochar, 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 36.5 mg/g. The fluoride concentration could be reduced to below 1 mg/L from an initial fluoride concentration of 10 mg/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.

Removal of fluoride from aqueous solution by TiO2 and TiO2–SiO2 nanocomposite

“…Several main factors, such as dosage, initial solution pH, contact time, initial fluoride concentration, and co-existing anions, were investigated. Their results indicated that the maximum sorption capacity of IAO/ GO can reach 64.72 mg/g and effective fluoride removal occurs in a wide pH range (3)(4)(5)(6)(7)(8)(9). Based on the findings of these studies, it seems that novel adsorbents, particularly nanomaterials, have great advances in the removal of fluorides from aqueous solutions [21].…”

“…Recently, great attention has been paid to the treatment of high fluoride water and researchers have conducted various investigations to develop effective ways to remove fluoride from polluted water. The most common treatment methods for fluoride polluted water including chemical precipitation, flocculation precipitation, electro-coagulation, membrane separation, adsorption, and ion exchange [2][3][4][5][6][7][8][9][10][11]. Among them, adsorption is a relatively convenient and cost-effective way that can remove fluoride from polluted water.…”

Enhanced fluoride removal from drinking water in wide pH range using La/Fe/Al oxides loaded rice straw biochar

“…Due to the dispersion of biochar and the stability of poly-aluminum or other metallic cations, the adsorbent remained positively charged in the high pH range and hence the electrostatic adsorption could still be maintained. When pH .7.0, the adsorption of fluoride by La/Fe/Al-RSBC could occur by an ion exchange reaction between hydroxyl and fluoride ions (Figure 10) (Chen et al 2017). It could be concluded from the calculated average free energy of adsorption (E) that the main mechanism was ligand exchange.…”

Effect of Spent Button Mushroom Substrate on Yield and Quality of Baby Spinach (Spinacia oleracea)

“…e spent substrate of various Pleurotus species has been investigated for the removal of nickel-contaminated water [26] and copper [27] and antibiotics in waste water from swine [28], pesticides in effluents from fruit packing industry [29], and textile dyes [30]. Some mushroom species have been investigated for fluoride removal from drinking water [31], methylene blue from waste industrial waters [32,33], and sulfa antibiotics [34].…”