Process Engineering of Biological Waste Gas Purification 409

Muthumbi Waweru, Veerle Herrygers, Herman Van Langenhove, and Willy Verstraete

17.1 Introduction 409

17.2 Biological Waste Gas Purification Technology 409

17.2.1 General Characteristics 409

17.2.2 Technology Types 410

17.2.2.1 Biofilter 410

17.2.2.2 Biotrickling Filter 410

17.2.2.3 Bioscrubber 411

17.2.2.4 Membrane Bioreactor 411

17.3 Performance Parameters 411

17.3.1 Empty Bed Contact Time or True Contact Time 413

17.3.2 Surface Loading Rate (BA) 413

17.3.3 Mass Loading Rate (BV) 414

17.3.4 Volumetric Loading Rate (vS) 414

17.3.5 Elimination Capacity (EC) 414

17.3.6 Removal Efficiency (RE) 414

17.4 Characteristics of the Waste Gas Stream 415

17.5 Process Principles 417

17.5.1 Equilibrium Partitioning of the Pollutant 417

17.5.2 Diffusion 419

17.5.3 Microbial Degradation of the Pollutant 420

17.6 Reactor Performance 421

17.7 Reactor Control 424

17.8 Perspectives 424 Acknowledgments 425 References 425

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