title: Adsorption of chloro-anilines from solution by modified peanut husk in fixed-bed column.
abstract: Natural peanut husk (NPH) modified with hexadecyl trimethyl ammonium bromide (CTAB) was used as adsorbent to remove 2,5-dimethoxy-4-chloroaniline (DMCH) from solution in a fixed-bed column. Fourier transform infrared spectroscopy analysis and X-ray fluorescence of NPH and modified peanut husk (MPH) showed that CTAB had been introduced onto the surface of NPH. The effects of flow rate and bed depth on breakthrough curves were studied. The Thomas model and the Yan model were selected to fit the column adsorption data and the results showed that the Yan model was better at predicting the breakthrough curves. The adsorption quantity was up to 6.46 mg/g according to the Yan model. The bed depth service time model was used to calculate the critical bed depth from experimental data and it was directly related to flow rate. As a low-cost adsorbent, MPH is promising for the removal of DMCH from solution.
authors.affiliation: School of Chemistry and Molecular Engineering, Zhengzhou University, 100 Kexue Road, Zhengzhou, 450001, China E-mail: rphan67@zzu.edu.cn.
authors.forename: Shenglong
authors.initials: S
authors.lastname: Zhang
authors.forename: Randi
authors.initials: R
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: Xiao
authors.forename: Runping
authors.initials: R
authors.lastname: Han
mesh_terms: D000327:Adsorption; D000814:Aniline Compounds / Q000302:isolation & purification*; D010367:Arachis / Q000737:chemistry*; D000077286:Cetrimonium; D002593:Cetrimonium Compounds; D008962:Models, Theoretical; D009363:Neoplasm Proteins / Q000235:genetics*; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000295:instrumentation*
chemical_list: D000814:Aniline Compounds; D002593:Cetrimonium Compounds; C586650:HA117 protein, human; D009363:Neoplasm Proteins; D014874:Water Pollutants, Chemical; D000077286:Cetrimonium