According to document account, be in early archaic mankind already began to use cation to exchange an agent, and arrive all the time after Adams and Holmes invented synthetic anion to exchange an agent 1935, just initiated new phase of development and resinous of applied ion exchange, appear in succession as the ion exchange resinous of all sorts of types later, applied technology gets ameliorative ceaselessly, applied limits also expands increasingly, showed advantage of ion exchange resinous and development potential adequately. Current, ion exchange resinous applies a technology to had formed a distinctive chemical industry to operate unit. Its use range also by in basically be used at water treatment industry at first and developing sanitation of treatment of chemistry of science of chemical industry, electron, environment, hydromeallurgy, analysis, food, medicine to wait for a domain.
The close connection between ion exchange colophony and sweet taste, make its receive very wide application in industry of contemporary refine sugar. In process of refine sugar production, with ion exchange colophony exchange, adsorption has lubricious material, can improve kosher efficiency already, can reduce component of candy of gooey Central Africa again, increase candy portion to reclaim rate. Improving sucrose and beetsugar quality while, still can raise white sugar yield, those who acquire refine sugar line of business is double win state.
Colophony of 1 ion exchange
Ion exchange colophony is the high polymer copolymer of a kind of globose and meshy solid, show translucence normally or opaque shallow yellow, yellow or brown. Not dissolve at acerbity, alkaline with water, but bibulous expand. To having, machine dissolvent, oxidant, reducer has certain stability, stable to heat. Colophony element contains certain polar group and blame polar group two parts, after expanding, the exchangeable ion on polar group and solution exchange action since medium ion, group of polarity of and rather than is framework of ion exchange resinous. It has trade the capacity is high, mechanical strength is good, expansile can good, can use for a long time wait for an advantage.
Taxonomy of ion exchange resinous has two kinds. It is to press resinous physics structure, can be ion exchange resorcinol gel sex, large hole sex and carrier sex to wait for 3 kinds; 2 it is the property that heads commutative radical group according to colophony place differs, and its cent exchanges colophony, anion to exchange colophony and other colophony to wait for cation.
The origin of 2 saccharide pigment reachs colophony decolour principle
Carbohydrate pigment originates the mixture of different organic thing. It is compound of sugar cane pigment, yellow ketone, design and color to suffer from phenol partly among them. Certain phenol can produce enzymatic hurried to react or close matter with metallization (like iron) reaction makes coloured compound. The pigment of other type is the child that the body before candy and coloured material reacts. For example, kind candy and amino acerbity action make melanin, another kind of pigment is generation of degradation of candy be heated (be like caramel) . Some coloured material produces below basic requirement, be like child of personal candy degradation. These organic compounds show anion commonly in alkalescent medium, have two close quality, have hydrophily already, have hydrophoby again.
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