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Clarifying agents are used to remove suspended solids from liquids by inducing flocculation, causing the solids to form larger aggregates that can ... For example, a ...
A variety of salts may be added to adjust the pH and act as clarifying agents, depending on the water chemistry. These include sodium hydroxide , calcium hydroxide , aluminum sulfate , aluminum oxide , ferric sulfate , ferric chloride , sodium aluminate , with flocculant aids polyaluminum chloride , polyferric chloride . [ 17 ]
Many substances have historically been used as fining agents, including dried blood powder. [5] There are two general types of fining agents — organic compounds and solid/mineral materials. [4] Organic compounds used as fining agents are generally animal based, a possible cause of concern to vegans. [6]
Despite its widespread use in the performance of so-called "dewatering experiments", the jar test is limited in its usefulness due to several disadvantages. For example, evaluating the performance of prospective coagulants or flocculants requires both significant volumes of water/wastewater samples (liters) and experimental time (hours).
A beer-fining agent that is suitable for vegetarians is Irish moss, a type of red algae containing the polymer chemical carrageenan. [8] However, carrageenan-based products (used in both the boiling process and after fermentation ) primarily reduce hazes caused by proteins , but isinglass is used at the end of the brewing process, after ...
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Finings’ actions may be broadly categorized as either electrostatic, adsorbent, ionic, or enzymatic.. The electrostatic types comprise the vast majority; including all but activated carbon, fining yeast, PVPP, copper sulfate, pectinase and pectolase.
In a 2007 New York Times article, [9] Harold McGee popularized an alternative method for clarifying broths, originating among chefs of the molecular gastronomy movement: gelatin filtration. Gelatin-filtration is a novel method of clarification, relying on some of the properties of a super- saturated solution of gelatin, created by freezing , to ...