Blog - Cavitation and process intensification
Hydrodynamic cavitation for Brewers' spent grain
Brewers' spent grain (BSG) is the most abundant and valuable by-product of beer-brewing. The alternative utilization of BSG has gained increased attention during recent years due to technological progress in its processing and the emergence of the concept of circular economy. BSG is characterized by a rich nutritional composition consisting of around 70% lignocellulosic fibrous material, 20% proteins, 10% lipids, in addition to vitamins, minerals, amino acids, and phenolic compounds.
The pretreatment stage of BSG biomass plays an important role in the efficiency of the extraction process and the final yield.
Due to the complicated natural plant cell wall composition, including cellulose, hemicellulose and lignin, which interlock together to form a recalcitrant structure, the utilization of lignocellulosic materials in biorefinery or in animal feed processes requires a right pretreatment: ROTOCAV hydrodynamic cavitator disrupts their crystalline structure and allow their fractionations, increases the specific area, total pore and micropore volume of the matrix.
The valorization of BSG through cavitation is environmentally friendly and sustainable.
Shear stress and cavitation promote the physical shredding of the biomass, increasing the available area, improving the valorization of the Brewers' spent grain.
With ROTOCAV you can:
- Obtain a higher yield with a faster extraction (saving time, energy and money);
- Valorize wastes, by converting by-products into valuable new animal food ingredients and nutrition supplements;
- Obtain high value products due to the mild operative process conditions.
ROTOCAV: the hydrodynamic cavitator ATEX certified
In the extract industry, as well as in other industries, flammable fuilds have to be used: these areas could require ATEX certified equipment. To satisfy these needs we added to our gamma of products ATEX certified hydrodynamic cavitators, according to UNI CEI EN ISO 80079-36:2016 and CEI EN IEC 60079-0:2018.
Here is the solution for your needs, to treat and cavitate solutions and suspensions with flammable liquids.
ROTOCAV hydrodynamic cavitator - New version, inspectable cavitation chamber
The new reactor is able to induce and control hydrodynamic cavitation on the treated suspensions, same as the traditional version, with some modifications to the design, to better meet the needs required in some specific industries (extraction and biomass treatment).
More into details, this new version comes with nozzles and a washing ring, to clean better the internals of the cavitation chamber at the end of each working cycle.
Moreover, the cavitation chamber can be easily opened for visual inspections, to ensure a complete cleaning between each working cycle, for different natural matrices and solvents.
The new version of this hydrodynamic cavitator is also available with ATEX certification for zone 2.
CAVIBATCH: hydrodynamic cavitator for batch installations
The Cavibatch hydrodynamic cavitator induces and controls the cavitation phenomenon on a fluid or on a suspension in a tank.
The solution is designed and developed to work in batch, with small volumes (50 - 3000 L).
Easy, compact, simple solution: the system is immersed in the bulk of the liquid, which is forced to recirculate and pass through the elements inside the cavitation chamber. The treated product is subjected to shock waves, hot spots and cavitation events.
Cellulose Recovery from agri-food residues by effective cavitational treatments
Residual biomass from agri-food production chain and forestry are available in huge amounts for further valorisation processes. Delignification is usually the crucial step in the production of biofuels by fermentation as well as in the conversion of cellulose into high added-value compounds.
High-intensity ultrasound (US) and hydrodynamic cavitation (HC) have been widely exploited as effective pretreatment techniques for biomass conversion and in particular for cellulose recovery.
Due to their peculiar mechanisms, cavitational treatments promote an effective lignocellulosic matrix dismantling with delignification at low temperature (35–50 °C). Cavitation also promotes cellulose decrystallization due to a partial depolymerization. The aim of this review is to highlight recent advances in US and HC-assisted delignification and further cellulose recovery and valorisation.
In this recent article (published in May 2021) you can read about the advantages of the ROTOCAV cavitator:
E-PIC S.r.l. at Tomato World - Piacenza Expo, 20th-21st February, 2020
E-PIC S.r.l. will be at TOMATO WORLD, the meeting dedicated to the professional system of industrial tomatoes, on 20th and 21st Febrary 2020, at Piacenza Expo (Italy).
The ROTOCAV hydrodynamic cavitator will be presented for applications in the agro-industrial sector, to open possibilities to introduce a new profit tool for businesses.
The primary goal is to arouse interest and curiosity to a technology able to maximize yields, reduce wastes and inefficiencies. The purpose is to prove that the ROTOCAV is able to exhaust the solid feedstock, to decrease operative costs and to achieve the maximum exploitation of the resources, so to get an economic gain from a waste.