Phenanthrene Removal from Aqueous Solution on Sesame Stalk‐based Carbon

Abstract

This work explored the performance of sesame stalk-based carbon prepared at different carbonization temperatures and activated by potassium hydroxide in the removal of phenanthrene from an aqueous solution. At a carbon concentration of 10 mg/32 mL and a carbonization temperature of 7008C, the removal efficiency of phenanthrene approached 100%. Furthermore, with the presence of acenaphthene and naphthalene as co-contaminants, the removal efficiency of phenanthrene by the prepared carbon was 99.60%, which was comparable to that by the commercial carbon. Hydrophobic interactions influenced phenanthrene removal, and partitioning appeared to be the dominant mechanism for phenanthrene removal from aqueous solution by sesame stalk-based carbon. The results obtained from this work should provide insight into the reuse of agricultural residues, and also suggest a new avenue for the removal of polycyclic aromatic hydrocarbons from contaminated water utilizing carbon prepared from agricultural residue.

Regulating Environmental Factors of Nutrients Release from Wheat Straw Biochar for Sustainable Agriculture

“…In recent years, biochar production, focused on agricultural residues, has gained increasing interest [1][2][3]. Biochar is a recalcitrant organic compound and better environmental improvement additive, created when biomass (feedstock) is heated to temperatures between 300 and 10008C under low oxygen concentrations [4][5][6].…”

Typical low cost biosorbents for adsorptive removal of specific organic pollutants from water

“…The last principal factor of lignocellulose which decides sorption capacity is surface morphology (topographical and elemental information) (Kong et al, 2012). Scanning Electron Microscope (SEM) is the method was often utilized to determine this characterization.…”

“…Sesame stalk-based carbon was used for removing phenanthrene from water by Kong et al (2012). The biosorbent was prepared from sesame stalk by carbonization with temperature 300°C, 400°C, 500°C, 600°C, 700°C and impregnation with KOH solution.…”

“…have http://dx.doi.org/10.1016/j.biortech.2015.02.003 0960-8524/Ó 2015 Elsevier Ltd. All rights reserved. been developed for SOPs removal from water Ahmed and Mohammad, 2014;Al-Zaben and Mekhamer, 2013;Kong et al, 2012;Pal, 2012;Pham et al, 2012). Among them, adsorption has superior advantages over other methods for removing pollutants at low concentration with respect to environmental friendliness, economy and high efficiency (Chen et al, 2011;Xi and Chen, 2014;Yakout and Daifullah, 2013).…”

Cellulosic substrates for removal of pollutants from aqueous systems: A review. Part 4. Dissolved petrochemical compounds

“…The performance of carbon-based absorbents can be greatly enhanced by treatment of the carbon with certain chemicals, either initially or before a final activation stage. Potassium hydroxide is one of the most widely studied activating agents (Wu et al 2005;Radhika and Palanivelu 2006;Tan et al 2008;Kilic et al 2011;Wu et al 2011Wu et al , 2012bKong et al 2012). Radhika and Palanivelu (2006) found that KOH-activated carbon outperformed products that they prepared from five other activating systems relative to sorption of chlorophenol.…”