First development to model aerosol emission from solid surfaces subjected to mechanical stresses: II. Experiment-theory comparison, simulation and sensibility analysis

• We experimentally verify the previously presented aerosol emission model.
• The quantity and rate of aerosol emission is dominated by the material type.
• The simulation and relative sensitivity analysis of the model parameters are shown.
• Model parameters are categorized to enable “safe by design” approach.

In this work, the particle aerosols emissions during the abrasion of three products – brick, wood and stainless steel – are measured. Owing to different material removal mechanisms in these three products during their abrasions, different quantities and generation rates of aerosols are observed with the brick producing the highest number at a constant rate, followed by the wood at continuously decreasing rate and at last the stainless steel with a constant rate. As per our knowledge, there is no model that could quantify the number of particle aerosols that get generated under present experimental conditions. Therefore, a new model based on an integrated approach of product design–behavior relationship, as detailed in Part I of this series, is applied here. Furthermore, the model׳s functioning verification, simulation and sensitivity analysis are also shown. Thanks to the experimentally determined semi-empirical relations and fit parameters, under the given experimental conditions, a close agreement between the experimental and model׳s results is observed. As a fundamental step towards the optimization in the design of products which are low emissive, i.e. the products which are “safer by design”, the key parameters of the model are categorized at the end so that the particle aerosols emission can be minimized by their maximization or minimization to a certain limit.