CAJ | 학술논문

在硫酸盐法制浆(KP)前对杨木木片进行热水预水解处理,探讨了不同P因子对预水解液性能的影响.实验结果表明:随P因子增大,预水解液的p H不断降低,最终导致水解木片的得率不断降低,此外,预水解液中的固形物、聚戊糖、酸溶木素、糠醛和COD C r含量也呈增加趋势;当P因子≥1355时,预水解液体系中易发生物质的吸附与沉积,经傅里叶红外光谱(F T-I R)表征证实该沉积物为木素/LC C类物质;当P因子为608~1060时,预水解液和水解木片中的聚戊糖提取率具有良好的线性关系:y=1.340x+7.235,R 2=0.977;在热重分析(TGA)过程中,预水解液主要的失重温度范围为165~450℃,且当P因子由61增至1355时,失重由41%升至61%.
재류산염법제장(KP)전대양목목편진행열수예수해처리,탐토료불동P인자대예수해액성능적영향.실험결과표명:수P인자증대,예수해액적p H불단강저,최종도치수해목편적득솔불단강저,차외,예수해액중적고형물、취무당、산용목소、강철화COD C r함량야정증가추세;당P인자≥1355시,예수해액체계중역발생물질적흡부여침적,경부리협홍외광보(F T-I R)표정증실해침적물위목소/LC C류물질;당P인자위608~1060시,예수해액화수해목편중적취무당제취솔구유량호적선성관계:y=1.340x+7.235,R 2=0.977;재열중분석(TGA)과정중,예수해액주요적실중온도범위위165~450℃,차당P인자유61증지1355시,실중유41%승지61%.
@@@@The impacts of various P-factors on the hydrolysate of poplar were investigated in this paper. The results indicate that as the P-factor increases, the yield of treated poplar chips and pH value of hydrosate decrease. While the contents of solid, pentosan, acid soluble lignin, furfural and CODCr in the hydrolysates are on the rise;when the P-factor is higher than 1355, the precipitation of lignin/LCC components characterized via FT-IR in hydrolysate system occurs easily; in addition, the relationship between hydrolysates and hydrolyzed chips in terms of pentosan extraction efficiency presents a good linear relationship (y=1.340x+7.235, R 2=0.977);the TGAs show that the main loss temperatures of the hydrolysates are between 165~450℃, and when the P-factor raises from 61 to 1355, the percent of weight loss increases from 41%to 61%.