Puranit UF
SIHA PURANIT UF fining agent from Eaton’s Begerow Product Line is a low sand bentonite specially developed for ultrafiltration systems. This product protects the membranes, pumps, and piping of the UF system. In addition, it offers highly effective clarification and stabilization of fruit juice.
Product Applications
SIHA PURANIT fining agent can be used alone either for stabilizing protein or in combination as a clarification aid prior to gelatin silica sol fining. Due to its high activity, lower quantities are usually required in comparison to conventional bentonites when SIHA PURANIT fining agent is used.
The high clarification and adsorption effectiveness of bentonite is based on the swelling properties of the individual bentonite particles. This increases the size of the inner surface many times over. In order to achieve this effect, SIHA PURANIT fining agent should be vigorously stirred into a volume of water 3 to 5 times the quantity of SIHA PURANIT until the powder is completely suspended. When stirred occasionally, SIHA PURANIT fining agent will swell completely within a few hours (it is best to set the batch the day before fining). If water at 122 – 140 °F (50 – 60 °C) is used, the swelling time can be reduced to approximately four hours. Supernatant water that may arise can be poured off.
Although it is generally possible to use bentonite without pre-soaking, the quantity required will increase since it has practically no time to swell. The soaked bentonite is added to the product to be fined, stirring constantly until it is uniformly distributed in the batch. SIHA PURANIT fining agent intensively and rapidly adsorbs protein and sediment while quickly clarifying the product.
The resulting sediment can be regenerated without difficulty by mixing in 0.5 – 2% of BECOCEL™ 2000 filter cellulose and/or BECOLITE™ 5000 perlits using a rotary filter or a sediment frame filter.
