A review of the mechanisms of solute sorption onto various biosorbents has been performed. The mechanisms have been subdivided into reaction based systems and diffusion based systems and the literature has been reviewed in accordance with these two groups. The range of solute-sorbent systems reviewed include metal ions, dyestuffs and several organic substances in aqueous systems onto a wide range of biosorbents and mineral earths. Extensive tables are presented summarising isotherm types, sorption capacities, kinetic models which have been applied particularly to biosorbent systems but also to many other adsorbent materials.

http://dns2.asia.edu.tw/~ysho/YSHO-English/Publications/PDF/Sep%20Pur%20Met29,%20189.pdf

Kinetics of pollutant sorption by biosorbents: review

3.2. Preparation 4090 3.3. Intermediate Layers 4090 3.4. Support 4090 3.5. Modification 4091 3.5.1. Silica Membrane Modification 4091 3.5.2. Membrane Structure Modification 4092 3.6. Operational Stability 4092 4. Zeolite Membranes 4092 4.1. Membrane Growth Methods 4093 4.2. Permeation and Gas Transport 4093 4.3. Defect Site Diffusion/Nonzeolitic Pores 4094 4.4. Thin Films 4094 4.5. Zeolite Membrane Modification 4094 4.6. CO2 Sequestration in H2 Separations 4095 4.7. Manufacturing 4095 5. Carbon-Based Membranes 4096 5.1. Carbon Membrane Preparations 4097 5.2. Carbon Membrane Post-treatment 4097 5.3. Carbon Membrane Module Construction 4097 5.4. Selective Surface Flow Membranes 4097 5.5. Disadvantages of Carbon Membranes 4098 5.6. Molecular Sieving Carbon Membranes 4098 5.7. Carbon Nanotubes 4099 6. Polymer Membranes for H2 Separations 4100 6.1. Dense Polymeric Membranes 4100 6.2. Hydrogen Selective Polymeric Membranes 4101 6.3. H2 versus CO2 Selective Polymeric Membranes 4103

Membranes for hydrogen separation.

Adsorption isotherm models for basic dye adsorption by peat in single and binary component systems

Optimization Techniques with FORTRAN

Membrane gas separation is a mature and expanding technology. However, the availability of better membrane materials would promote faster growth. In this Perspective we analyze the state of the art of membrane materials, including polymers and hybrid materials, as well as the current issues and barriers, and finally, we outline future research directions in membrane science. Development of new membrane materials for large scale separations will rely on a multidisciplinary approach that embraces the broad fields of chemical and materials engineering, polymer science, and materials chemistry.

http://pubs.acs.org/doi/pdf/10.1021/acs.macromol.7b01718

50th Anniversary Perspective: Polymers and Mixed Matrix Membranes for Gas and Vapor Separation: A Review and Prospective Opportunities

Liquid-phase adsorption of phenols with activated carbon were studied in a batch adsorber. The experimental data were analyzed by the two proposed models, the pore diffusion model and the surface diffusion model with an effective diffusion coefficient as a model parameter. The amount adsorbed for each adsorbate was predicted fairly well by both models. Introducing the flux equation for the combined diffusion mechanism, it was shown that the surface diffusion contributed more to intraparticle diffusion than the pore diffusion in the adsorption system studied. The dependence of surface diffusion coefficients. D s on the amount adsorbed, q , can be represented by the simple empirical equation. The less favorably adsorbed adsorbate has stronger concentration dependence of D s on q .

Intraparticle diffusion in liquid-phase adsorption of phenols with activated carbon in finite batch adsorber

Chemical vapor deposition of hydrogen-permselective silica films on porous glass supports from tetraethylorthosilicate

New reactor system for supercritical water oxidation and its application on phenol destruction

Fixed-bed adsorption for bulk component system. Non-equilibrium, non-isothermal and non-adiabatic model

The effects of the horizontal connection length (0.1≤L c ≤0.5 m), the cross-sectional area ratio of downcomer-to-riser (0.11≤A d /A r ≤0.53), and the superficial gas velocity on gas phase holdups in the riser and downcomer were studied. The circulation liquid velocity, the mixing performance and the volumetric mass transfer coefficient in the external-loop airlift reactors were also measured. The horizontal connection length and A d /A r were major parameters which strongly affected the performance of external-loop airlift reactors. Useful correlations in the external-loop airlift reactors were obtained for gas holdups, the volumetric mass transfer coefficient, the circulation liquid velocity, and the mixing time

Won Kook Lee

Papers

Intraparticle diffusion in liquid-phase adsorption of phenols with activated carbon in finite batch adsorber

Chemical vapor deposition of hydrogen-permselective silica films on porous glass supports from tetraethylorthosilicate

New reactor system for supercritical water oxidation and its application on phenol destruction

Fixed-bed adsorption for bulk component system. Non-equilibrium, non-isothermal and non-adiabatic model

Circulation liquid velocity, gas holdup and volumetric oxygen transfer coefficient in external-loop airlift reactors