Biochars issus de roseau commun pour l’adsorption du méthylorange en solution aqueuse

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Title: Common reed biochars for the adsorption of methyl orange in aqueous solution

The textile industry uses large amount of water and organic dyes to tint their products. These synthetic dyes are toxic and cause water coloring. This results in colored wastewater that must be treated before being discharged. In addition, most dyes are not biodegradable, and once released they alter the aquatic environment. Among the processes for treating these effluents, adsorption is an easy and a cost-effective process to implement. The objective of this study is the preparation of biochars from common reed applicable for the discoloration of effluents used in the textile industry. Common reed (Phragmites australis) has been collected from the Sed-Ksob river of M’sila (Algeria) and used as precursor for the production of biochars activated by phosphoric acid. The surface chemistry of the prepared materials has been characterized using selective titration (Boehm assay), TGA analysis and pH of point zero charge (pHpzc) measurements.  The results of the TGA analysis and the Boehm assay show the presence of many superficial functional groups on the surface of the biochars.

Category: Wastewater treatment