title: Effects of calcium competition on lead sorption by palm kernel fibre.
abstract: The kinetics of sorption of a mono-solute of lead ions and of a bi-solute of lead and calcium ions onto palm kernel fibre was investigated in a batch system. The experimental data were analysed based on an intraparticle diffusion equation and a pseudo-second-order mechanism, in both the mono- and bi-solute sorption systems, in order to predict the rate constant of sorption, the equilibrium capacity, and the initial sorption rate. The results indicate that the sorption mechanism is described by a pseudo-second-order equation. Intraparticle diffusion was significant in the lower-concentration systems. In addition, a modified intraparticle diffusion equation was applied to the sorption systems.
authors.affiliation: School of Public Health, Taipei Medical University, 250 Wu-Hsing Street, Taipei 11014, Taiwan. ysho@tmu.edu.tw
authors.forename: Yuh-Shan
authors.initials: YS
authors.lastname: Ho
authors.forename: Augustine E
authors.initials: AE
authors.lastname: Ofomaja
mesh_terms: D000327:Adsorption; D028023:Arecaceae / Q000737:chemistry; D001673:Biodegradation, Environmental; D002118:Calcium / Q000737:chemistry*; D004058:Diffusion; D007700:Kinetics; D007854:Lead / Q000737:chemistry* / Q000302:isolation & purification*; D014873:Water Pollutants / Q000302:isolation & purification*
chemical_list: D014873:Water Pollutants; D007854:Lead; D002118:Calcium