Textile sludge–sawdust chemically produced activated carbon: equilibrium and dynamics studies of malachite green adsorption

• Published in: Biomass conversion and biorefinery Vol. 12; no. 7; pp. 2847 - 2859
• Main Authors: Hui, Tang Shu, Zaini, Muhammad Abbas Ahmad
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-07-2022; Springer Nature B.V
• Subjects: Activated carbon; Adsorption; Biotechnology; Dynamics; Energy; Flow velocity; Malachite green; Original Article; Renewable and Green Energy; Sawdust; Sludge; Textile sludge; Adsorption; Sawdust; Wastewater treatment; Activated carbon; Malachite green
• ISSN: 2190-6815; 2190-6823
• DOI: 10.1007/s13399-020-00955-z

Textile sludge–sawdust chemically produced activated carbon (SSAC) was used in equilibrium and dynamics adsorption of malachite green (MG). The effects of concentration in equilibrium, and influent flow rate (15–30 mL/min), initial concentration (20–80 mg/L) and bed height (2–6 cm) in dynamics mode were investigated. SSAC with surface area of 979 m
2
/g shows an outstanding maximum capacity of malachite green at 530 mg/g. In adsorption dynamics, the breakthrough time and bed capacity increased with increasing bed height, and decreasing flow rate and influent dye concentration. Bohart-Adams, Thomas, Yoon-Nelson and Clark models were applied to describe the column breakthrough, dynamics behaviour and adsorption mechanisms. The breakthrough curves were best fitted by Yoon-Nelson model at the experimental conditions. The maximum bed capacity was reported to be 565 mg/g. SSAC is an effective adsorbent for MG removal from aqueous phase.