Cetyl trimethyl ammonium bromide modified magnetic biochar from pine nut shells for efficient removal of acid chrome blue K. (September 2020)

• Record Type: Journal Article
• Authors: Wang, Huan; Wang, Shan; Gao, Yihong
• Is Part Of: Bioresource technology. Volume 312(2020)
• Publication Date: 2020-09
• Subjects: Magnetic biochar -- Pine nut shell -- Cetyl trimethyl ammonium bromide -- High adsorption capacity -- Acid chrome blue K; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123564
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: CTAB-MC from pine nut shell was prepared by rapid pyrolysis and modified method . CTAB-MC for AK is higher adsorption capacity than MC. The adsorption of CTAB-MC for AK is the electrostatic interaction and π-π interaction. CTAB-MC can use for three times. Abstract: Biochar was prepared by rapid pyrolysis using pine nut shell as raw materials. Then cetyl trimethyl ammonium bromide modified magnetic biochar material (CTAB-MC) was obtained after modifying biochar by FeCl3 and cetyl trimethyl ammonium bromide. The CTAB-MC was characterized by SEM, FTIR, XRD and Magnetic analyses. Adsorptive property of the CTAB-MC for acid chrome blue K (AK) was studied. It was found that adsorption capacity was affected by solution pH, temperature, adsorption time, initial concentration and ionic strength. The CTAB-MC showed higher adsorption ability toward acid chrome blue K, which was up to 40% higher than that of MC. The experimental results showed that adsorption data of AK on the CTAB-MC well conformed to the Langmuir isotherm adsorption model and the pseudo-second order kinetic model. The CTAB-MC can be recycled three times. This work reveals that CTAB-MC is a promising adsorbent with broad application prospects.