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- Title
Activated Carbon from Sugarcane Bagasse: A Low-Cost Approach towards Cr(VI) Removal from Wastewater.
- Authors
Ahmed, Rana; Block, Inga; Otte, Fabian; Günter, Christina; Duarte-Rodrigues, Alysson; Hesemann, Peter; Banerji, Amitabh; Taubert, Andreas
- Abstract
The potential of pretreated sugarcane bagasse (SCB) as a low-cost and renewable source to yield activated carbon (AC) for chromate CrO42− removal from an aqueous solution has been investigated. Raw sugarcane bagasse was pretreated with H2SO4, H3PO4, HCl, HNO3, KOH, NaOH, or ZnCl2 before carbonization at 700 °C. Only pretreatments with H2SO4 and KOH yield clean AC powders, while the other powders still contain non-carbonaceous components. The point of zero charge for ACs obtained from SCB pretreated with H2SO4 and KOH is 7.71 and 2.62, respectively. Batch equilibrium studies show that the most effective conditions for chromate removal are a low pH (i.e., below 3) where >96% of the chromate is removed from the aqueous solution.
- Subjects
ACTIVATED carbon; BAGASSE; SUGARCANE; POINTS of zero charge; CHROMIUM removal (Sewage purification); SEWAGE
- Publication
Chemistry (2624-8549), 2023, Vol 5, Issue 2, p1124
- ISSN
2624-8549
- Publication type
Article
- DOI
10.3390/chemistry5020077