玉米秸皮生物机械法制浆的研究
发布时间：2018-11-24 11:22
【摘要】：玉米秸皮含有37.62%的硝酸乙醇纤维素,重均纤维长度为0.987,它比全玉米秸秆更适合于做造纸原料。同时考虑到目前机械法制浆高能耗、化学制浆引起环境污染的问题。本论文采用新的木质纤维素原料——玉米秸皮作为造纸原料进行生物机械法制浆的研究。 通过Bavendamm-PDA平板从济南长清玉米种植地筛选出四株产生变色反应的菌株。从山东大学微生物技术国家重点实验室获得的五株菌中Phanerochaete chrysosporium-25和Phanerochaete chrysosporium-14的Bavendamm-PDA平板呈阴性,Trametes hirsuta lg-9,Trametes versicolor,Irpex lacteus均呈阳性。这9种菌株的玉米秸皮降解实验结果显示对玉米秸皮选择性降解的顺序为:Trametes hirsuta lg-9 Sd P.C.-14 P.C.-25 Trametes versicolor Sc。 将筛选到的对玉米秸皮选择性降解最强的菌株Trametes hirsuta lg-9用于玉米秸皮生物机械法制浆的研究。通过不同菌龄、不同培养方式得到的接种物接种玉米秸皮在无外通空气和连续通空气两种条件下预处理玉米秸皮45d制机械浆,得到的结果显示无外通空气方式培养,低菌龄的接种物处理得到的纸浆强度优于高菌龄;同菌龄的培养物,固态静置培养接种物处理样强度性能优于液态震荡培养接种物。连续通空气培养时,由于打浆度上的差异,有待研究。用固态静置培养物接种,无外通空气方式引起的重量损失小于外通空气,且强度性能也优于后者。用液态震荡培养物接种,则结果相反。Trametes hirsuta lg-9预处理引起了玉米秸皮机械浆白度和光散射系数的降低和光吸收系数的增加。且Trametes hirsuta lg-9预处理后的玉米秸皮在所研究的两段磨浆条件下,引起的磨浆能耗降低幅度在70-85%之间。另外研究发现Trametes hirsuta lg-9玉米秸皮生物机械浆的强度性能与打浆过程中引起的细小增量与保水值增量的比值有较好的线性正相关关系。 通过预处理时间对Trametes hirsuta lg-9玉米秸皮制生物机械浆影响的研究发现,Trametes hirsuta lg-9预处理玉米秸皮过程中产木聚糖酶、纤维素酶和漆酶,产酶量顺序为木聚糖酶纤维素酶漆酶。产酶速率表现为初期增加较快,中期减缓,后期降低的趋势。且Trametes hirsuta lg-9预处理玉米秸皮引起了发酵体系pH的变化。磨浆段能耗的测定结果显示磨浆能耗随着处理时间不断降低,且在α=0.1时,磨浆能耗与Trametes hirsuta lg-9预处理过程中的产酶量无相关性,而与Trametes hirsuta lg-9预处理后的玉米秸皮红外光谱3414cm~-1和1653cm~-1的相对吸收强度具有线性相关性。造成Trametes hirsuta lg-9玉米秸皮机械浆的强度随着处理时间降低的原因是纤维素酶不断积累引起纤维素解聚,引起α-纤维素含量的降低。Trametes hirsuta lg-9预处理秸皮增加了脂肪族羰基和与苯环共轭的羰基含量,因此引起了Trametes hirsuta lg-9预处理玉米秸皮机械浆的光吸收系数的增加,从而降低了纸浆的白度。Trametes hirsuta lg-9预处理玉米秸皮过程中对愈疮木基的降解多于紫丁香基的降解,且预处理初期对纤维素的结晶区降解多于无定形区,而后期以对无定形区的降解为主。Trametes hirsuta lg-9预处理玉米秸皮的显微观察显示Trametes hirsuta lg-9对玉米秸皮的侵入从表皮细胞开始逐渐深入到薄组织和维管束部分。
[Abstract]:The corn-straw skin contains 37. 62% of cellulose nitrate, and the weight-average fiber length is 0.9887, which is more suitable for making paper-making raw materials than the whole-corn straw. at the same time, the problems of high energy consumption and environmental pollution caused by chemical pulping are taken into consideration. In this paper, the new wood-cellulose raw material _ corn straw skin is used as the paper-making raw material to study the bio-mechanical pulping. A four-plant color-changing reaction was selected from the long-clear corn of Jinan through the Bavendamm-PDA plate. The Bavendamm-PDA plates of the five strains obtained from the National Key Laboratory of the National Key Laboratory of the University of Shandong University were negative, and Tramees hirsuta lg-9, Trametes versicolor and Irpex lacteus were all in the form of negative. The results of the experiment on the degradation of the corn-straw skin of the 9 strains showed that the order of the selective degradation of the corn-straw skin was as follows: Tramees Hirsua lg-9 Sd P. C.-14 P. C.-25 Trametes versicolor Sc. The strain Tramedes Hirsuuta lg-9, which is the most selective for the selective degradation of the corn straw skin, is used for the biological mechanical method of the corn straw skin. The results of the study on the pulping were carried out by inoculating the corn straw skin with the inoculums of different ages and different culture methods. The mechanical pulp of the corn straw skin 45d was pre-treated under two conditions without external air and continuous air. The results showed that no external air was available. The strength of the pulp is superior to that of the high-bacteria-age, and the strength of the inoculum treated with the culture of the same age is superior to that of the liquid. Culture of the inoculum. During continuous air culture, due to the difference in the beating degree It is to be studied. The weight loss caused by the non-external air mode is less than that of the external air and the strength property is less than that of the external air when the solid-state stand culture is used for inoculation. is also superior to the latter, and is inoculated with a liquid oscillating culture, in contrast, that pretreatment of the Trametes Hirsuta lg-9 lead to the reduction and light absorption of the whiteness and light scattering coefficient of the corn-straw-peel mechanical pulp. The increase of the coefficient and the decrease of the energy consumption of the corn straw after the pre-treatment of Tramedes Hirsurea lg-9 in the studied two-stage slurry are 70-In addition, it was found that the ratio of the strength and the increment of the fine increment and the water-retaining value caused during the beating process of the Tramees hirsuta lg-9 corn-straw-skin bio-mechanical pulp has a good linearity. A study on the effect of pretreatment time on the biological mechanical pulp of the corn straw skin of Tramees Hirsuuta lg-9 was found in the study that the production of xylanase, cellulase and laccase in the process of pretreatment of the corn straw skin by Tramees Hirsuuta lg-9, and the sequence of the enzyme production was wood-poly. The enzyme of the enzyme of the enzyme of the enzyme of the enzyme of the enzyme of the enzyme of the carbohydrase. The rate of the production of the enzyme is fast and the medium-term decrease in the initial stage. in that late and late stage, the pretreatment of the corn straw skin by the Tramees Hirsuuta lg-9 The results of the energy consumption of the pulp section show that the energy consumption of the slurry is decreased with the treatment time, and the energy consumption of the slurry is in the process of pretreatment with the Tramees Hirsua lg-9 when the energy consumption of the slurry is 0. 1. The relative absorption of the infrared spectra of the cornstalk skin, 3414cm ~ -1, and 1653cm ~ -1, which was pre-treated with Tramees Hirsuuta lg-9, was not related. The reason for the decrease of the strength of the mechanical pulp of the Trametes hirsuta lg-9 corn straw is that the cellulose is depolymerized due to the continuous accumulation of the cellulose, causing the reduction of the strength of the mechanical pulp of the Trametes hirsuta lg-9. The decrease of the content of cellulose. The pre-treated straw skin of Tramees Hirsuuta lg-9 increased the content of the base of the aliphatic radicals and the coequal with the benzene ring, thus resulting in an increase in the light absorption coefficient of the mechanical pulp of the corn-straw-peel mechanical pulp by the Tramees Hirsua lg-9. the degradation of the guaiacyl group is more than that of the syringyl group in the process of pretreatment of the corn straw skin by the method of the tramees hirsota lg-9, and the crystallization area of the cellulose is more degraded than the amorphous area at the early stage of the pretreatment, and the later stage is not The degradation of the shaping region is the main. The microscopic observation of the pretreatment of the corn straw skin by the Tramees hirschuta lg-9 shows that the invasion of the corn stalk skin from the epidermal cells to the thin
【学位授予单位】：山东轻工业学院
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TS743
本文编号：2353510
[Abstract]:The corn-straw skin contains 37. 62% of cellulose nitrate, and the weight-average fiber length is 0.9887, which is more suitable for making paper-making raw materials than the whole-corn straw. at the same time, the problems of high energy consumption and environmental pollution caused by chemical pulping are taken into consideration. In this paper, the new wood-cellulose raw material _ corn straw skin is used as the paper-making raw material to study the bio-mechanical pulping. A four-plant color-changing reaction was selected from the long-clear corn of Jinan through the Bavendamm-PDA plate. The Bavendamm-PDA plates of the five strains obtained from the National Key Laboratory of the National Key Laboratory of the University of Shandong University were negative, and Tramees hirsuta lg-9, Trametes versicolor and Irpex lacteus were all in the form of negative. The results of the experiment on the degradation of the corn-straw skin of the 9 strains showed that the order of the selective degradation of the corn-straw skin was as follows: Tramees Hirsua lg-9 Sd P. C.-14 P. C.-25 Trametes versicolor Sc. The strain Tramedes Hirsuuta lg-9, which is the most selective for the selective degradation of the corn straw skin, is used for the biological mechanical method of the corn straw skin. The results of the study on the pulping were carried out by inoculating the corn straw skin with the inoculums of different ages and different culture methods. The mechanical pulp of the corn straw skin 45d was pre-treated under two conditions without external air and continuous air. The results showed that no external air was available. The strength of the pulp is superior to that of the high-bacteria-age, and the strength of the inoculum treated with the culture of the same age is superior to that of the liquid. Culture of the inoculum. During continuous air culture, due to the difference in the beating degree It is to be studied. The weight loss caused by the non-external air mode is less than that of the external air and the strength property is less than that of the external air when the solid-state stand culture is used for inoculation. is also superior to the latter, and is inoculated with a liquid oscillating culture, in contrast, that pretreatment of the Trametes Hirsuta lg-9 lead to the reduction and light absorption of the whiteness and light scattering coefficient of the corn-straw-peel mechanical pulp. The increase of the coefficient and the decrease of the energy consumption of the corn straw after the pre-treatment of Tramedes Hirsurea lg-9 in the studied two-stage slurry are 70-In addition, it was found that the ratio of the strength and the increment of the fine increment and the water-retaining value caused during the beating process of the Tramees hirsuta lg-9 corn-straw-skin bio-mechanical pulp has a good linearity. A study on the effect of pretreatment time on the biological mechanical pulp of the corn straw skin of Tramees Hirsuuta lg-9 was found in the study that the production of xylanase, cellulase and laccase in the process of pretreatment of the corn straw skin by Tramees Hirsuuta lg-9, and the sequence of the enzyme production was wood-poly. The enzyme of the enzyme of the enzyme of the enzyme of the enzyme of the enzyme of the enzyme of the carbohydrase. The rate of the production of the enzyme is fast and the medium-term decrease in the initial stage. in that late and late stage, the pretreatment of the corn straw skin by the Tramees Hirsuuta lg-9 The results of the energy consumption of the pulp section show that the energy consumption of the slurry is decreased with the treatment time, and the energy consumption of the slurry is in the process of pretreatment with the Tramees Hirsua lg-9 when the energy consumption of the slurry is 0. 1. The relative absorption of the infrared spectra of the cornstalk skin, 3414cm ~ -1, and 1653cm ~ -1, which was pre-treated with Tramees Hirsuuta lg-9, was not related. The reason for the decrease of the strength of the mechanical pulp of the Trametes hirsuta lg-9 corn straw is that the cellulose is depolymerized due to the continuous accumulation of the cellulose, causing the reduction of the strength of the mechanical pulp of the Trametes hirsuta lg-9. The decrease of the content of cellulose. The pre-treated straw skin of Tramees Hirsuuta lg-9 increased the content of the base of the aliphatic radicals and the coequal with the benzene ring, thus resulting in an increase in the light absorption coefficient of the mechanical pulp of the corn-straw-peel mechanical pulp by the Tramees Hirsua lg-9. the degradation of the guaiacyl group is more than that of the syringyl group in the process of pretreatment of the corn straw skin by the method of the tramees hirsota lg-9, and the crystallization area of the cellulose is more degraded than the amorphous area at the early stage of the pretreatment, and the later stage is not The degradation of the shaping region is the main. The microscopic observation of the pretreatment of the corn straw skin by the Tramees hirschuta lg-9 shows that the invasion of the corn stalk skin from the epidermal cells to the thin
【学位授予单位】：山东轻工业学院
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TS743
【参考文献】
相关期刊论文 前10条
1 孙竹莹,郭升民;玉米秸杆皮穰分离及其制浆试验[J];中华纸业;2001年05期
2 丁琳;李士勇;张彦波;杨汝男;;氧漂玉米秆化学浆的光催化补充漂白[J];大连工业大学学报;2008年01期
3 何为,詹怀宇,王习文,伍红;一种改进的漆酶酶活检测方法[J];华南理工大学学报(自然科学版);2003年12期
4 何立明;王文杰;王桥;魏斌;厉青;王昌佐;刘晓曼;;中国秸秆焚烧的遥感监测与分析[J];中国环境监测;2007年01期
5 池玉杰,鲍甫成;木质素生物降解与生物制浆的研究现状分析[J];林业科学;2004年03期
6 刘瑞伟;;我国农作物秸秆利用现状及对策[J];农业与技术;2009年01期
7 李金花,宋红竹,薛永常,张绮纹,李胜刚;我国制浆造纸木材纤维原料的现状及发展对策[J];世界林业研究;2003年06期
8 库丽霞,陈彦惠,岳建芝,张百良,吴连成;玉米秸秆能量指标的测定和利用研究[J];玉米科学;2004年01期
9 李明;;世界玉米生产回顾和展望[J];玉米科学;2010年03期
10 管斌,曲音波,高培基,孙艳玲;纤维素酶酶系对草浆改性的研究[J];中国造纸学报;2001年02期
相关硕士学位论文 前1条
1 陈洪雷;玉米秸秆废弃物在制浆造纸领域中的应用[D];山东轻工业学院;2008年
，本文编号：2353510
本文链接：https://www.wllwen.com/shekelunwen/minzhuminquanlunwen/2353510.html
