Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization method to recover phosphate as a potential fertilizer substitute

The effectiveness of phosphate(P)removal from aqueous solutions was investigated by novel low-cost biochars synthesized from vinasse and functionalized with calcined dolomite.The vinasse-derived biochar,synthesized via pyrolysis at different temperatures,showed easy preparation and a large surface area.The novel vinasse biochar nanocomposites were prepared by adding dolomite to the vinasse biochars with different weight percentages(10,20 and 30%).The characteristics of the prepared materials were identified for further understanding of the inherent adsorption mechanism between P ions and vinasse biochars.Vinasse-dolomite nanocomposite was very effective in the adsorption of P species from aqueous media.The effect of the operational factors on Vinasse-dolomite nanocomposite was explored by applying response surface methodology(RSM).According to RSM results,the optimum condition was achieved to be contact time 90(min),250(mg/L)of P concentration and pH 7.Thermodynamic isotherm and kinetic studies were applied on experimental data to understand the adsorption behavior.The Vinasse-dolomite nanocomposite revealed preferential P species adsorption in the presence of co-existing anions.The P species could be recovered by 1.0 MHC 1 where the efficiency was not affected up to the fifth cycle.The P-loaded Vinasse-dolomite nanocomposite was successfully tested on a plant;it significantly improved its growth and proved its potency as a P-based fertilizer substitute.

Erratum to:Synthesis of vinasse-dolomite nanocomposite biochar via a novel developed functionalization method to recover phosphate as a potential fertilizer substitute

Due to the typesetting error,there are some errors in the Equation(4)in the manuscript,the correction is as follows,and we apologize to the reader.