Strength properties of black spruce wood under different treatment

Synergistic Effects of Pretreatment Process on Enzymatic Digestion of Rice Straw for Efficient Ethanol Fermentation

“…Treatment with sodium bicarbonate also changes the properties of cellulose surface (Kwasniakova et al, 1996). As shown in Fig.…”

“…Similar results have been reported in the literature (Fan et al, 1980), showing that the hydrolysis rate of wheat straw increases with delignification up to about 50%, after which cellulose hydrolysis increases only slightly. By contrast, the alkaline treatment by sodium bicarbonate allows the swelling similar to that with sodium hydroxide, but the difference is on the chemical modification of cellulose fiber surface by carboxylation with bicarbonate treatment (Kwasniakova et al, 1996). As a conclusion, the carboxylation on the cellulose surface could prevent the aggregation of cellulose fibrils.…”

“…It is noteworthy that the acidified sodium chlorite delignification causes only trace solubilization of glucan and xylan (Ahlgren and Goring, 1971). It is also reported that sodium bicarbonate is effective to disintegrate the cellulose structure and the swelling by carboxylation of produced fiber (Kwasniakova et al, 1996).…”

Improving alkaline pretreatment method for preparation of whole rice waste biomass feedstock and bioethanol production

“…20 Treatment with sodium bicarbonate also changes the properties of the cellulose surface. 15 In this case, carboxylation of the cellulose surface supported the disintegration of cellulose structures, and allowed the enzyme to degrade the cellulose micro-brils. In our study, SB pretreatment was not effective for the reduction of lignin as well as less effective for saccharication (34.5 g of reducing sugar per 100 g of biomass) and hydrolysis yield (51.5%) (Table 1; Fig.…”

“…Swelling aer deligni-cation is necessary to enhance the enzyme accessibility of cellulose for maximum recovery of sugars. 15 Enzymatic hydrolysis of lignocellulosic biomass into fermentable sugars is considered the most efficient process for saccharication. However, it requires large quantities of cellulolytic enzymes, which makes the process more expensive.…”