Sustainable Valorization of Sewage Sludge Into NaOH‐Activated Biochar for Malachite Green Removal From Wastewater
This work investigates a circular economy strategy by converting sewage sludge into efficient adsorbents for malachite green (MG) removal. The adsorption performance of raw sludge (RS) was compared with NaOH‐activated biochar (NAB) prepared by pyrolysis and chemical activation. Physicochemical characterization (XRF...