Development and modeling of the effective bioactive poultices for reducing the nitrate content in building materials

- Reducing nitrate salt contents in the affected objects.
- Development and modeling of the effective bioactive poultices.
- Poultices provide a suitable microenvironment for the P. stutzeri metabolic activity.
- Used an ANN model in order to reduce the time of experiments and the cost.

Two types of poultices, selected after the investigation of a number of raw materials, whose combination showed desired activities, were combined with a Pseudomonas stutzeri suspension to yield effective bioactive poultices for reducing the nitrate content in the model bricks. The efficiency was studied as a function of the application mode, porosity of the brick models, bacterial cells viability, and depth of the models. The outcome of the study is an ANN model with a high correlation coefficient, emphasizing that the depth of the bricks is the most influential (negative) factor considering the denitration efficiency.

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