Bartosz Nowak

Warsaw University of Technology · Chair of Dispersed Systems Engineering

Various modifications are utilized to improve the oil mist separation efficiency of non-woven filters. Our previous work proposed an oleophilisation method involving coating polypropylene filter fibres with porous organosilica aerogel based on methyltrimetoxysilane (MTMS). The filters with fibers with collector area enhanced by this modification ex...

A base-catalysed methyltrimethoxysilane (MTMS) colloidal gel formation was implemented as a cellular automaton (CA) system, specifically diffusion and/or reaction-limited aggregation. The initial characteristic model parameters were determined based on experimental synthesis of MTMS-based, ambient-pressure-dried aerogels. The applicability of the n...

In situ extraction is a method for separating plant secondary metabolites from in vitro systems of plant biomass cultures. The study aimed to investigate the MTMS-based xerogels morphology effect on the growth kinetics and deoxyshikonin productivity in xerogel-supported in vitro culture systems of Rindera graeca hairy root. Cultures were supplement...

Polypropylene non-woven material with fibres surface modified with methyltrimetoxysilane(MTMS)-based aerogel structure exhibits increased affinity to oil and highly developed collector area, which translates to enhanced oil mist filtration performance, crucial in automotive, commercial and home appliances. This article indicates the filtration impr...

Air containing dispersed oil phase occurs in machining and cutting operations, engine closed crankcase ventilation and compressed gas cleaning. The significance of this issue stems from the fact that many liquids used in industry are harmful both for humans and other living organisms. Especially droplets in micron and submicron scale can penetrate...

The formation of silica aerogels and the kinetics of condensation were investigated numerically. The influence of the reaction-limited to the diffusion-limited aggregation (RLA to DLA) transition on the reaction kinetics curves and the evolution of the aggregate size distribution during condensation were examined. The 2D cellular automaton was deve...

Unique biosynthetic abilities revealed by plants determine in vitro cultures of hairy roots as a suitable source of pharmaceutically relevant bioactive compounds. The basic aim of the study was to examine the applicability of aerogel composed of methyltrimethoxysilane (MTMS) for immobilization of Rindera graeca hairy roots by identifying quantitati...

The kinetics of silica-based aerogel formation was investigated and described analytically. Experimental gelation kinetics was designated by (i) filtration and determination of the resulting product mass, (ii) absorbance measurements during gelation. The dependence of aerogel mass on gelation time, in general, has a form similar to a sigmoid functi...

Separation of water/oil emulsion is an important issue in environment protection oriented processes due to content of valuable materials that could be recovered and re-used. This problem is visible in the petroleum industry, where a huge amount of oily waste containing water is produced, and in automotive industry, where sensitive engine parts can...

Filtration of liquid aerosol (mist) is one of the most important challenges in many branches of chemical industry. One of the possible ways of filtering materials improvement is modification with aerogels. In this study aerogels based on methytrimethoxysilane (MTMS), which exhibit superhydrophobic and superoleophilic, as well as sorptive (thanks to...

The shale gas is one of the types of natural gas. The main difference between shale gas and conventional natural gas is the way of its exploration. For shale gas mining fracturing process is necessary. For this purpose huge amounts of water are used. The used water, which returns from the well, is contaminated to a large extent. There is a need to...

Need for a new membrane is clearly visible in recent studies, mostly due to the fouling phenomenon. Authors, focused on problem of biofouling caused by microorganisms that are present in water environment. An attempt to form a new membrane with zinc oxide (ZnO) nanowires was made; where plasma treatment was used as a first step of modification foll...