Adsorption kinetics of As and Pb onto composite beads synthesized with stone powder, chitosan, maghemite (SCM beads) weight ratio 1:1:0.5 were investigated in batch mode. Several kinetic models such as pseudo-first order model (PFOKM), pseudo-second (PSOKM), two compartment first (TCFOKM), modified (MTCFOKM) utilized to analyze the kinetics. Although had low specific surface area pore volume, M...

Large-pore materials or supports resembling polymer conduits are used as packing material in chromatographic operations. Our ongoing research has shown that, when modified with peptides or ligands, chitosan beads that are 800 microm in diameter and have 3.5% solids can be used as matrices in bioseparations. The goal of the present study is to evaluate the transport properties of biomolecules in...

One kind of adsorbent with a high adsorption capacity for anionic dyes was prepared using ionically and chemically cross-linked chitosan beads. A batch system was applied to study the adsorption behavior of one acid dye (MY, metanil yellow) and one reactive dye (RB15, reactive blue 15) in aqueous solutions by the cross-linked chitosan beads. The adsorption capacities was 3.56 mmol g(-1) (1334 m...

Chitosan has been the subject of interest for its use as a polymeric drug carrier material in dosage form design due to its appealing properties such as biocompatibility, biodegradability, low toxicity and relatively low production cost from abundant natural sources. However, one drawback of using this natural polysaccharide in modified release dosage forms for oral administration is its fast d...

Pitch deposits originating from alkaline peroxide bleaching of mechanical pulps can seriously decrease the runnability of the paper machine when efforts have been made to increase the reuse of process water. In order to degrade pitch particles present in whitewater, lipase was immobilized on chitosan beads using a binary method. The operational stability of the immobilized lipase and its effica...

Microchannel emulsification can produce droplets of uniform size at high throughput for wide-ranging applications in the food and drug industry. Mammalian cell encapsulation using emulsion-based systems is significant interest immobilized culture or transplantation applications. has recently been applied to mammalian alginate. Here, we extend this approach thermoresponsive hydrogels chitosan as...

This study is to prepare chitosan beads modified with sodium dodecyl sulfate (SDS) effectively remove Cr(III) from an aqueous solution. The characterizations of SDS-chitosan by scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Fourier transform-infrared (FT-IR) and photoelectron (XPS) proved the successful synthesis adsorbent. adsorption on SDS material was investigat...