Effects of lignin content and acid concentration on the preparation of lignin containing nanofibers from alkaline hydrogen peroxide mechanical pulp

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Lulu Zhu ◽  
Shiwen Xue ◽  
Hao Ren ◽  
Jin Zhao ◽  
Huamin Zhai ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Acid Concentration ◽  
Lignin Content ◽  
Raw Material ◽  
Sodium Chlorite ◽  
Fiber Morphology ◽  
Alkaline Hydrogen Peroxide ◽  
Mechanical Pulp ◽  
Chemical Pulp ◽  
Nano Cellulose

AbstractThe poplar alkaline hydrogen peroxide mechanical pulp (APMP) with the lignin content of 24.63 % was used as raw material, which with lignin content of 10.04 %, 6.33 %, 3.82 %, and 1.14 % were obtained by the acid sodium chlorite method for 1–4 hours respectively. Then, different lignin content APMP were micro-nano processing treated with acidolysis (6.5 M, 9.8 M) or ultra-granular grinding respectively. Afterwards, poplar bleached chemical pulp (BCP) was prepared micro-nano cellulose under the same conditions as the APMP. Then, compared the data of the particle size, specific surface area, fiber morphology and zeta potential of suspensions between micro-nano cellulose products. The results show that the presence of a small amount of lignin (1–4 %) in APMP does not affect the preparation of different scales nano cellulose under different acid concentration conditions. When the lignin content is reduced to below 2 %, the acidolysis is more uniform, stable, and well-dispersed compared to BCP products; when the APMP is processed by the ultra-granular grinding, the higher lignin content, the more obvious cutting effect in the fiber length direction. The characteristics and feasibility of the preparation of micro-nano cellulose by the acidolysis and ultra-granular grinding using APMP with varying degrees of delignification are compared.

scholarly journals EFEKTIVITAS BERBAGAI INDIKATOR PENGGILINGAN UNTUK MEMPREDIKSI KUALITAS KERTAS

2016 ◽  
Vol 1 (02) ◽  
Author(s):  
Hana Rachmanasari ◽  
Taufan Hidayat
Keyword(s):  
Kraft Pulp ◽  
Wood Pulp ◽  
Strength Properties ◽  
Raw Material ◽  
Fiber Morphology ◽  
Mechanical Pulp ◽  
Chemical Pulp ◽  
Bleached Kraft Pulp ◽  
Drainage Rate

The experiments of refining have been done using PFI mill and Beater, at 300 mL CSF of freenessas fixed parameters. Research was aims to determine the effective indicators of refining to predict the quality of the paper. The raw material used were wood pulp, non wood pulp, chemical pulp, mechanical pulp, Leaf Bleached Kraft Pulp (LBKP) and Needle Bleached Kraft Pulp (NBKP). The parameters which analyzed for each equipments were fibers classification, fiber morphology, dimensions of its derivatives and as the value of the drainage rate. The strenght of handsheets formed from the fibers were tested including tensile, bursting, and tearing strength. According to the results of correlation analysis, the most effective and sensitive indicators of refining towards strength properties of paper, in the wo different refining methods, is the felting power slenderness with correlation values above 0.8.Key words : refining, fiber classification, fiber morphology, the strength properties, correlation valueABSTRAKTelah dilakukan percobaan penggilingan menggunakan PFI mill dan Valley Beater, pada freeness 300 mL CSF sebagai parameter tetap. Penelitian ini bertujuan untuk mengetahui beberapa indikator penggilingan yang efektif untuk memprediksi kualitas kertas. Bahan baku terdiri dari pulp kayu, pulp non kayu, pulp kimia, pulp mekanis, pulp kayudaun dan pulp kayujarum. Parameter yang dianalisa untuk masing-masing hasil penggilingan adalah klasifikasi serat, morfologi serat dan dimensi turunannya serta nilai laju drainase. Selanjutnya dilakukan uji sifat kekuatan yang meliputi ketahanan tarik, retak dan sobek. Berdasarkan hasil analisa korelasi terhadap data penelitian, indikator penggilingan yang paling efektif dan sensitif terhadap sifat kekuatan kertas pada dua metode penggilingan berbeda adalah kelangsingan dengan nilai korelasi di atas 0,8.Kata kunci : penggilingan, klasifikasi serat, morfologi serat, sifat kekuatan, nilai korelasi  

The behavior of chromophoric structures in softwood mechanical pulp on bleaching with alkaline hydrogen peroxide

2006 ◽  
Vol 21 (3) ◽  
pp. 359-364 ◽  
Author(s):  
Eva Svensson Rundlöf ◽  
Eric Zhang ◽  
Liming Zhang ◽  
Göran Gellerstedt
Keyword(s):  
Hydrogen Peroxide ◽  
Alkaline Hydrogen Peroxide ◽  
Mechanical Pulp

scholarly journals Isolation of Cellulose from Wheat Straw Using Alkaline Hydrogen Peroxide and Acidified Sodium Chlorite Treatments: Comparison of Yield and Properties

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Umair Qasim ◽  
Zulfiqar Ali ◽  
Muhammad Shahid Nazir ◽  
Sadaf Ul Hassan ◽  
Sikander Rafiq ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Wheat Straw ◽  
Environmental Concerns ◽  
Sodium Chlorite ◽  
X Ray Diffraction ◽  
Alkaline Hydrogen Peroxide ◽  
X Ray ◽  
Multifunctional Material ◽  
Hydrogen Peroxide Treatment ◽  
Ft Ir

Environmental concerns due to excessive use of synthetic or petroleum-based materials have encouraged scientists to develop novel, sustainable, and multifunctional material using abundant lignocellulosic biomass. In this work, a study was conducted on the isolation of cellulose from wheat straw using two different methods: acidified sodium chlorite and alkaline hydrogen peroxide. A comparative study was carried out based on the yield and properties of extracted cellulose. The final product (after treatments) was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA) for the identification of properties. Both the treatments isolated pure white color cellulose. However, the yield of cellulose isolated through acidified sodium chlorite treatment (81.4%) was higher than alkaline hydrogen peroxide treatment (79%). Moreover, no huge difference was observed in the crystallinity and thermal properties of extracted cellulose.

Research on Production of Hand Towel from the Poplar Extruding Mechanical Pulp (EMP)

2012 ◽  
Vol 550-553 ◽  
pp. 3253-3257
Author(s):  
Xian Qi Sun ◽  
Chuan Shan Zhao ◽  
Hui Rong Yang
Keyword(s):  
Kraft Pulp ◽  
Lower Cost ◽  
Raw Materials ◽  
Raw Material ◽  
Public Places ◽  
Mechanical Pulp ◽  
Tissue Paper ◽  
Chemical Pulp ◽  
Bleached Kraft Pulp ◽  
High Level

Hand towel is one kind of disposable tissue paper which has characteristic of soaking up water quickly and lower cost. It becomes increasingly popularity in families, at work, and public places. There are many kinds of raw materials to produce hand towel according to its level. Some researches showed that bleached chemical pulp could be partially used to the production of hand towel and some other household paper. In this study, some kinds of raw material which be used to produce hand towel were analyzed and trying to looking for new one. Poplar Extruding Mechanical Pulp (EMP) had characteristics of long fiber, high level of strength and brightness. Different ratio of poplar EMP and certain Bleached Kraft Pulp were tested to make hand towel. The effects of poplar EMP on whiteness, tensile strength, bulkiness, absorbability were discussed. The results showed that characteristic targets of hand towel made from poplar EMP and Bleached Kraft Pulp met the quality requirements of GBT22455-2009 and satisfied the high-end hand towel. The new hand towel had lower cost, higher stiffness and higher bulkiness. It was feasible from the technique and economy point.

Influences of Laccase Mediator System on Bleachability and Fiber Properties of APMP Pulp

2014 ◽  
Vol 1081 ◽  
pp. 299-303
Author(s):  
Hui Mei Wang ◽  
Yu Liu ◽  
Jia Chuan Chen ◽  
Zhen Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Populus Tomentosa ◽  
Fiber Morphology ◽  
Alkaline Hydrogen Peroxide ◽  
Obvious Effect ◽  
Peroxide Bleaching ◽  
Fiber Properties ◽  
Mediator System ◽  
Laccase Mediator System ◽  
Triploid Populus Tomentosa

In this research, the laccase mediator system (LMS) was used to modify the unbleached triploid populus tomentosa alkaline hydrogen peroxide pulp (APMP). The changes of pulp brightness were measured and the effects of LMS on the subsequent hydrogen peroxide bleaching were also determined. Besides, the fiber morphology was analyzed by ESEM, and then the obvious changes of pulp have been recovered. In a word, the LMS has obvious effect on cellulose.

Comparative study of the efficiency of pretreatment with alkaline hydrogen peroxide in pineapple bagasse in different granulometries submitted to acid and enzymatic saccharification

2021 ◽  
Vol 10 (1) ◽  
pp. e4921019902
Author(s):  
Danielle Pires Nogueira ◽  
Lorena Costa Vasconcelos ◽  
Gabriel Luis Castiglioni ◽  
Fernanda Ferreira Freitas ◽  
Araceli Aparecida Seolatto
Keyword(s):  
Hydrogen Peroxide ◽  
Enzymatic Saccharification ◽  
Raw Material ◽  
Particle Sizes ◽  
Alkaline Hydrogen Peroxide ◽  
Concentration Time ◽  
Total Reducing Sugars ◽  
Pre Treatment ◽  
High Concentrations ◽  
Acid Saccharification

This work had the purpose of evaluating the efficiency of the pretreatment with alkaline hydrogen peroxide of pineapple bagasse in order to obtain fermentable sugars by applying acid and enzymatic hydrolysis to said residue. Four experimental designs were applied to study the best conditions for the pre-treatment. Total reducing sugars (TRS) concentration was the response and hydrogen peroxide concentration, time and temperature were the independent variables. The studies were conducted using pineapple bagasse with particle sizes of 20 mesh and 48 mesh. Acid saccharification, with 2.9% sulfuric acid (v/v), following the pre-treatment, yielded TRS concentrations that reached 0.094 g of TRS/g of raw bagasse for 20 mesh and 0.101 g of TRS/g of raw bagasse for 48 mesh. The enzymatic saccharification, with 9 FPU/g cellulase and 2% (m/v) of bagasse, reached 0.063 g of TRS/g of raw bagasse for both particle sizes. The peroxide concentration showed a significant influence, the use of high concentrations reduced the TRS output in both hydrolysis. With the results found in this work, it is possible to infer the feasibility of applying pineapple bagasse as a lignocellulosic raw material. 

Effects of PEI as ATC on the Retention and Drainage of APMP

2011 ◽  
Vol 233-235 ◽  
pp. 1587-1591
Author(s):  
Fu Shan Chen ◽  
Huan Fei Xu ◽  
Xiu Ying Jiang ◽  
Song Lin Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Molecular Weight ◽  
Charge Density ◽  
Retention Rate ◽  
Alkaline Hydrogen Peroxide ◽  
Mechanical Pulp ◽  
The Impact ◽  
Retention And Drainage

The impact of highly cationic density polymers such as modified poly-ethyleneimine(PEI), as anionic trash catcher(ATC) on the drainage and retention properties of aspen alkaline hydrogen peroxide mechanical pulp(APMP) in different CPAM(/bentonite) systems was studied. The results showed that Modified PEI could improve the retention and drainage properties of CPAM/ bentonite systems; when adding 0.02% dosage of PEI, the drainage and retention rate were increased by 16.0% and 1.9% respectively as compared to control with 0.03% dosage of the CPAM with 1.55 meq/g cationic charge density and 4.9 million molecular weight, which denoted by CPAM(W/W); the drainage and retention rate were increased by 28.6% and 3.0% respectively as compared to the control with 0.03% dosage of CPAM(W/W) and 0.3% dosage of bentonite. The CPAM with more cationic charge density and higher molecular weight than the CPAM(W/W) is denoted by CPAM(W/O) in this paper. The microparticle system which consisted with PEI and the CPAM(W/O)(/bentonite) was slightly superior to the PEI/CPAM(W/W)/bentonite system. When 0.02% dosage of PEI and 0.03% dosage of CPAM were added respectively, PEI/CPAM(W/O) made the drainage and retention rate increased by 9.5% and 1.9% respectively as compared with PEI/CPAM(W/W).

scholarly journals DEVELOPMENT OF TECHNOLOGY FOR PRODUCTION OF DISSOLVING WOOD PULP

2020 ◽  
pp. 333-343
Author(s):  
Firdaves Kharisovna Khakimova ◽  
Konstantin Andreyevich Sinyayev ◽  
Ruslan Eduardovich
Keyword(s):  
Hydrogen Peroxide ◽  
Raw Materials ◽  
Alkali Treatment ◽  
Wood Pulp ◽  
Dissolving Pulp ◽  
Sodium Chlorite ◽  
Chemical Pulp ◽  
The World ◽  
Sulfite Pulp ◽  
Ecf Bleaching

The work is devoted to the study of possibility and expediency of ECF bleaching for semi-chemical pulp with production of dissolving pulp, which is very popular in Russia and in the world. Production of dissolving wood pulp is important to replace cotton pulp obtained from imported raw materials. The conditions of bleaching and alkali treatment of sulfite pulp are investigated. CA dissolving pulp grade P was produced. To this end, new environmentally reliable short bleaching and alkali treatment schemes of sulfite pulp have been developed using only two oxidizing reagents: hydrogen peroxide and sodium chlorite. The bleaching schemes are based on the ECF technology developed earlier by the authors. Bleached dissolving pulp CA grade P was obtained according to all proposed schemes, including the shortened scheme Pa–E–Ch1–HAT–Ch2–A; pulp with increased yield was obtained due to good selectivity of the used chemicals under the developed conditions of delignification and bleaching, which contributes to the economy of wood. The possibility of obtaining pulp for viscose according to the above scheme is also shown. The results of studies have shown the possibility of obtaining wood pulp CA grade P from these raw materials by TCF technology with the use for delignification and bleaching (after alkali treatment) of hydrogen peroxide in an acidic and traditional alkaline medium, respectively.

Comparative study of simultaneous saccharification and fermentation byproducts from sugarcane bagasse using steam explosion, alkaline hydrogen peroxide and organosolv pretreatments

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 13723-13729 ◽  
Author(s):  
Yanzhi You ◽  
Shujuan Yang ◽  
Lingxi Bu ◽  
Jianxin Jiang ◽  
Dafeng Sun
Keyword(s):  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Comparative Study ◽  
Acid Concentration ◽  
Steam Explosion ◽  
Simultaneous Saccharification And Fermentation ◽  
Steam Pretreatment ◽  
Acetic Acid Concentration ◽  
Alkaline Hydrogen Peroxide ◽  
Simultaneous Saccharification

Most of the hemicelluloses were removed and more acetyl groups were generated after steam pretreatment, and a high acetic acid concentration was observed during SSF.

scholarly journals Effect of Ozone Treatment on the Properties of Oil Palm Empty Fruit Bunch Sulfonated Chemi-Mechanical Pulp

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1085
Author(s):  
Xing Wan ◽  
Yang Ping ◽  
Jun Li
Keyword(s):  
Oil Palm ◽  
Raw Materials ◽  
Lignin Content ◽  
Paper Industry ◽  
High Surface ◽  
Poor Performance ◽  
Raw Material ◽  
Ozone Treatment ◽  
Empty Fruit Bunch ◽  
Mechanical Pulp

Oil palm empty fruit bunch (EFB) as an abundant waste material can be utilized for pulp production to alleviate the shortage of raw materials in the paper industry. Sulfonated chemi-mechanical pulp (SCMP) has great potential in paper making industry. However, its poor performance due to the high surface lignin content limits its application. In this study, we used EFB as raw material to produce SCMP and systematically studied the effect of ozone treatment on pulp properties. Results show that the surface structure and morphology of fibers exhibited distinct differences under different ozone dosage treatments. Compared to the control, the content of surface lignin of pulps was reduced by 2.56%, 4.64%, 13.24% and 25.24% when ozone consumption was 1, 3, 5 and 7 wt%, respectively. Meanwhile, the treated pulp had a lower drainability at the same refining energy level. Moreover, the physical and optical properties of handsheets were improved significantly after ozone treatment. Ozone treatment is a very efficient way to improve the performance of SCMP. Additionally, this method avoids complicated processes and chemical consumption. Therefore, as an effective, environmentally friendly and low-cost treatment method, ozone treatment can improve the performance of EFB SCMP and thus provide a high-quality pulp resource.

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