Decolorization of sugar syrups using commercial and sugar beet pulp based activated carbons.
Decolorization of sugar syrups using commercial and sugar beet pulp based activated carbons.
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DOI：
10.1016/j.biortech.2007.07.058
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发表时间：
2008-06
影响因子：
11.4
通讯作者：
H. L. Mudoga;Hayrettin Yücel;N. S. Kincal
中科院分区：
文献类型：
--
作者：
H. L. Mudoga;Hayrettin Yücel;N. S. Kincal
用2种商用和8种甜菜浆基活性碳对糖浆脱色进行了研究。为了将脱色性能与其他特性联系起来，测定了粉末状碳的比表面积、孔体积、体积密度和灰分含量，测定了其悬浮液的pH值和电导率，以及它们对碘和糖蜜溶液的颜色吸附性能。在1/100(w/w)剂量下测量了所有碳的脱色能力，并对较好的样品测定了等温线。两种商用活性炭的脱色效果不同，这可能与它们的物理化学性质有关。在750℃下用CO2活化5h制得的甜菜浆炭的脱色效果明显好于其他几种炭，接近商业用炭的脱色效果。很明显，甜菜浆是一种廉价的潜在的活性碳前体，用于制糖。
Sugar syrup decolorization was studied using two commercial and eight beet pulp based activated carbons. In an attempt to relate decolorizing performances to other characteristics, surface areas, pore volumes, bulk densities and ash contents of the carbons in the powdered form; pH and electrical conductivities of their suspensions and their color adsorption properties from iodine and molasses solution were determined. The color removal capabilities of all carbons were measured at 1/100 (w/w) dosage, and isotherms were determined on better samples. The two commercial activated carbons showed different decolorization efficiencies; which could be related to their physical and chemical properties. The decolorization efficiency of beet pulp carbon prepared at 750°C and activated for 5h using CO2was much better than the others and close to the better one of the commercial activated carbons used. It is evident that beet pulp is an inexpensive potential precursor for activated carbons for use in sugar refining.