Open AccessAdsorption Ability of Cephalexin onto the Straw-Based Activated Carbon: Performance and Mechanism
Author(s) -
Lam Van Tan,
Hong-Tham Nguyen Thi,
To-Uyen Dao Thi,
Nguyen Thi Thuy Hong
Publication year - 2020
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2020.22566
Subject(s) - adsorption , chemistry , straw , activated carbon , sorption , aqueous solution , carbon fibers , wastewater , powdered activated carbon treatment , chemical engineering , specific surface area , nuclear chemistry , organic chemistry , waste management , inorganic chemistry , composite material , materials science , catalysis , composite number , engineering
A straw-activated carbon has been successfully synthesized with the high BET surface area, at 494.9240m2/g, which is perfectly suitable for the adsorption of cephalexin antibiotic from aqueous water. It isnoted that the adsorption capacity of straw-activated carbon is demonstrated by the effect of initialconcentration, contact time, pH solution and dosage. The straw-activated carbon exhibited improveddecontaminant efficiency towards cephalexin antibiotics. Quick and improved sorption could beattributable to the distinctive structural and compositional merits as well as the synergetic contributionof functional groups to surface material. Most interestingly, the adsorption capacity achieved at pH 6was ~98.52%. A mechanism adsorption has been proposed to demonstrate adsorption of thestraw-activated carbon (AC-S). By comparison with other studies, it is confirmed that AC-S in thisstudy obtained a higher removal efficiency than other adsorbent materials, suggesting thatstraw-activated carbon may be an appropriate candidate to treat cephalexin from wastewater media