IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
Bioresour Technol. 2010 Apr;101(7):2450-7. doi: 10.1016/j.biortech.2009.11.025. Epub 2009 Dec 9.
Different types of activated carbon were prepared by chemical activation of brewer's spent grain (BSG) lignin using H(3)PO(4) at various acid/lignin ratios (1, 2, or 3g/g) and carbonization temperatures (300, 450, or 600 degrees C), according to a 2(2) full-factorial design. The resulting materials were characterized with regard to their surface area, pore volume, and pore size distribution, and used for detoxification of BSG hemicellulosic hydrolysate (a mixture of sugars, phenolic compounds, metallic ions, among other compounds). BSG carbons presented BET surface areas between 33 and 692 m(2)/g, and micro- and mesopores with volumes between 0.058 and 0.453 cm(3)/g. The carbons showed high capacity for adsorption of metallic ions, mainly nickel, iron, chromium, and silicon. The concentration of phenolic compounds and color were also reduced by these sorbents. These results suggest that activated carbons with characteristics similar to those commercially found and high adsorption capacity can be produced from BSG lignin.
不同类型的活性炭是通过使用 H(3)PO(4)在不同的酸/木质素比例（1、2 或 3g/g）和碳化温度（300、450 或 600 摄氏度）下对啤酒糟（BSG）木质素进行化学活化制备的，这是根据 2(2)全因子设计进行的。所得材料的表面积、孔体积和孔径分布进行了表征，并用于 BSG 半纤维素水解物（糖、酚类化合物、金属离子等化合物的混合物）的解毒。BSG 碳的 BET 表面积在 33 到 692m(2)/g 之间，微孔和中孔的体积在 0.058 到 0.453cm(3)/g 之间。这些碳对金属离子，主要是镍、铁、铬和硅的吸附能力很强。这些吸附剂还降低了酚类化合物和颜色的浓度。这些结果表明，可以从 BSG 木质素中生产出具有类似于商业发现的特性和高吸附能力的活性炭。
