Biocementation of particulate material in suspension

The present invention is directed to a composition and method to decrease the amount of particulate material in suspension, both in a liquid or in air, especially in industrial processes that generate suspended particulate material. In particular, the invention is directed to a composition and method to decrease the amount of particulate material in suspension in air or a liquid through agglomeration and subsequent biocementation, by application of an exopolysaccharide (EPS) source that can be direct or through inoculation with microorganisms that produce said EPS. This allows in a first step to settle the particulate material and subsequently the cementation of the material when there are calcium containing compounds in the particulate material that has been settled in the first step, by means of the inoculation of a second class of microorganisms that have ureolytic activity.