Low-volatility gases (LVGs) are increasingly recognized as critical contributors to atmospheric pollution and industrial operational challenges. Their low vapor pressures, strong surface affinities, and intrinsic toxicity enable them to participate in secondary particulate formation, while also causing condensation, fouling, and corrosion in emission systems. These dual environmental and engineering impacts highlight the need for effective purification technologies grounded in robust scientific understanding. This book delivers a unified treatment of LVG capture by adsorption, linking porous-material design with adsorption thermodynamics, kinetic models, and mass-transfer phenomena. It explains how pore architecture, surface functionality, and diffusion constraints determine selectivity and capacity, and it treats desorption and regeneration as integral to process sustainability and cos-t effectiveness. The text integrates molecular simulation and multiscale modeling as tools to reveal adsorption sites, interaction energies, and diffusion pathways, thereby informing rational adsorbent design. Case studies and process-level discussions translate these insights into engineering strategies for flue-gas treatment, incineration off-gas control, nuclear fuel reprocessing, and other industrial scenarios. Combining fundamentals, modeling, materials, and applications, the book is a concise technical reference for researchers and engineers tackling LVG purification and adsorption-based gas treatment. This book can serve as a reference for researchers and engineers engaged in gas adsorption separation research and applications, as well as a teaching material for teachers and students in related majors at higher education institutions.

Chapter 1 Overview of Low-Volatile Gas 001 1.1 Characteristics of Low-Volatile Gas 001 1.2 Sources and Hazards of Low-Volatile Gas 005 1.3 Purification Technologies for Low-Volatile Gas 006 References 009 Chapter 2 Overview of Adsorption Purification Technology 011 2.1 Principles and Fundamentals of Adsorption Technology 011 2.2 Adsorption Phase Equilibrium 012 2.3 Adsorption Kinetics 016 2.4 Desorption Characteristics 019 References 021 Chapter 3 Overview of Adsorbents 024 3.1 Concept of Adsorbents 024 3.2 Microporous Adsorbents 025 3.2.1 Activated Carbon and Other Microporous Carbon Materials 025 3.2.2 Alumina 030 3.2.3 Silica Gel 031 3.2.4 Resins 031 3.2.5 Zeolites 031 3.3 Mesoporous Adsorbents 035 3.3.1 Ordered Mesoporous Silica 036 3.3.2 Ordered Mesoporous Carbon 039 3.3.3 Disordered Mesoporous Carbon 044 References 056 Chapter 4 Adsorption Equilibrium of Low-Volatility Gases on Adsorbent Materials 060 4.1 Relevant Experimental Methods 060 4.1.1 Gas-Phase PAHs Adsorption Experiments 060 4.1.2 Dioxin Adsorption Experiment 062 4.2 Adsorption Equilibrium of Low-Volatility Gases on Microporous Adsorbents 064 4.2.1 Adsorption Equilibrium of Gaseous PAHs on Microporous Adsorbents 064 4.2.2 Adsorption Equilibrium of Dioxins on Microporous Adsorbents 069 4.3 Adsorption Equilibrium of Low-Volatility Gases on Mesoporous Adsorbents 072 4.3.1 Adsorption Equilibrium of Gaseous PAHs on Ordered Mesoporous Adsorbents 072 4.3.2 Adsorption Equilibrium of Gaseous PAHs on Disordered Mesoporous Adsorbents 082 4.4 Factors Affecting Adsorption Equilibrium 084 References 087 Chapter 5 Adsorption Kinetics of Low-Volatility Gases on Adsorbent Materials 089 5.1 Related Experimental Methods 089 5.1.1 Axial Diffusion Adsorption Model 089 5.1.2 LDF Kinetic Model 091 5.1.3 Constant Concentration Wave Kinetic Model 092 5.1.4 Estimation of Adsorption Kinetic Parameters 093 5.2 Adsorption Kinetics of Low-Volatility Gases on Microporous Adsorbents 094 5.2.1 Adsorption Kinetics of Gas-Phase PAHs on Ordered Microporous Adsorbents 094 5.2.2 Adsorption Kinetics of Dioxins on Microporous Adsorbents 102 5.3 Adsorption Kinetics of Low-Volatility Gases on Mesoporous Adsorbents 104 5.3.1 Adsorption Kinetics of Gas-Phase PAHs on Ordered Mesoporous Adsorbents 104 5.3.2 Adsorption Kinetics of Gas-Phase PAHs on Disordered Mesoporous Adsorbents 118 References 120 Chapter 6 Desorption Characteristics of Low-Volatility Gases on Adsorption Materials 122 6.1 Relevant Experimental Methods 122 6.1.1 Temperature-Programmed Desorption (TPD) Experimental Method 122 6.1.2 Desorption Kinetic Analysis Method 124 6.2 Microporous Adsorbents 127 6.2.1 Desorption Characteristics of Gas-Phase PAHs on Microporous Adsorbents 127 6.2.2 Desorption Characteristics of Dioxins on Microporous Adsorbents 143 6.3 Mesoporous Adsorbents 146 6.3.1 Desorption Characteristics of Gas-Phase PAHs on Ordered Mesoporous Adsorbents 146 6.3.2 Desorption Characteristics of Gas-Phase PAHs on Disordered Mesoporous Adsorbents 164 References 175 Chapter 7 Adsorption Mechanism Based on Molecular Simulation 178 7.1 Relevant Experimental Methods 178 7.1.1 Grand Canonical Monte Carlo (GCMC) Method 179 7.1.2 Molecular Dynamics (MD) Method 182 7.1.3 Density Functional Theory (DFT) 184 7.2 Adsorption of PAHs on Mesoporous Silica-Based Models：GCMC and MD Simulation 187 7.2.1 Kinetic Simulation of PAHs Adsorption on Mesoporous Silica-Based Models 187 7.2.2 Thermodynamic Simulation of PAHs Adsorption on Mesoporous Silica-Based Models 192 7.2.3 Model Validation and Adsorption Performance of PAHs 198 7.2.4 Adsorption States of PAHs on Mesopore Models 205 7.3 DFT Simulation on the Adsorption of PAHs on Silica-Based Mesoporous Models 212 7.3.1 DFT Computational Simulation 212 7.3.2 Adsorption Configuration of PAHs 215 7.3.3 Interactions Between PAHs and Silica-Based Surfaces 222 7.4 DFT Simulation of PAH Adsorption on Disordered Mesoporous Carbon Models 230 7.4.1 DFT Calculation Simulation 230 7.4.2 Adsorption Mechanism of Phenanthrene/Pyrene on ECSC 235 References 242 Chapter 8 Potential Applications of Low-Volatile Gas Adsorption Purification 247 8.1 Purification of Low-Volatility Radioactive Gaseous Waste 247 8.1.1 Purification of Gaseous Iodine in Radioactive Emissions 247 8.1.2 Purification of RuO4 in Radioactive Gases 251 8.2 Adsorptive Purification of Polycyclic Aromatic Hydrocarbons (PAHs) in Coke Oven Flue Gas 253 8.3 Purification of Dioxins in Municipal Waste Incineration Flue Gas 255 8.4 Purification of Naphthalene and Nicotine in Cigarette Smoke 257 8.5 Adsorptive Purification of Indoor Low-Volatility Gaseous Pollutants 259 8.5.1 Purification of Macromolecular Gaseous Pollutants in the Coating Industry 259 8.5.2 Purification of Benzo [a] pyrene Carcinogens in Kitchen Fumes 260 8.6 Summary 261 References 261