Nordic Pulp & Paper Research Journal最新文献_第6页

Preparation and properties of a novel decorative base paper for formaldehyde-free adhesive impregnation 一种新型无甲醛胶粘剂浸渍装饰原纸的制备及性能研究

4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-10-17 DOI: 10.1515/npprj-2023-0027

Min Liang, Jingya Gong, Jianfeng Xu, Ru Liu, Ling Long

引用次数: 0

Effects of programmed maintenance shutdowns on effluent quality of a bleached kraft pulp mill 程序化停机维护对漂白硫酸盐纸浆厂出水水质的影响

4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-10-17 DOI: 10.1515/npprj-2023-0043

Nelson Rubens Nascimento Del’Antonio, Mariele Fioreze, Márcio Caliari, João Pedro Amaral, Claudio Mudadu Silva

{"title":"Effects of programmed maintenance shutdowns on effluent quality of a bleached kraft pulp mill","authors":"Nelson Rubens Nascimento Del’Antonio, Mariele Fioreze, Márcio Caliari, João Pedro Amaral, Claudio Mudadu Silva","doi":"10.1515/npprj-2023-0043","DOIUrl":"https://doi.org/10.1515/npprj-2023-0043","url":null,"abstract":"Abstract Routinely, the mills perform programmed maintenance shutdowns (PMS) that can affect the characteristics of the effluents and the performance of the effluent treatment plant (ETP). A careful planning of the PMS, along with the use of industrial process sectorial spill control and the use of the emergency spill lagoon have considerably minimized these effects. The Suzano pulp mill located in Aracruz (Brazil) has three production lines and carry out, on average, PMS of each production line separately, every 15 months of operation. The purpose of the study was to evaluate the effects of the PMS on the effluent characteristics and performance of the ETP compared to the periods of normal operation. The results showed that during the PMS, the physicochemical characteristics of the raw and treated effluents were like those found during normal operation. The lower organic loads found in the effluents during the PMS periods were associated with the decrease of the flow rates and the increase of the hydraulic retention time of the ETP, causing a better performance of COD, BOD, TSS and AOX removal. A proper planning of the PMS improved the performance of the ETP and the treated effluent quality remained similar to those during the normal operating period.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135944352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of flexible and binder-free lignin-based carbon nanofiber electrode materials by electrospinning in aqueous system 水体系静电纺丝制备柔性无粘结剂木质素基纳米碳纤维电极材料

4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-09-29 DOI: 10.1515/npprj-2023-0026

Yunxia Wang, Pengfei Hao, Lirong Lei, Yi Hou

{"title":"Preparation of flexible and binder-free lignin-based carbon nanofiber electrode materials by electrospinning in aqueous system","authors":"Yunxia Wang, Pengfei Hao, Lirong Lei, Yi Hou","doi":"10.1515/npprj-2023-0026","DOIUrl":"https://doi.org/10.1515/npprj-2023-0026","url":null,"abstract":"Abstract Lignin, as a widely distributed, renewable and environmentally friendly source of carbon, could been utilized for carbon nanofibers to not only maximize the usage of resources, but also expand the energy-related opportunities. In this research, flexible lignin-based carbon nanofibers are prepared by electrospinning lignin nanofibers in a new green aqueous solution of lignin and polyvinyl alcohol (PVA), which is then characterized by physical and chemical characterizations. The results reveal that optimal carbonization temperature of 800 °C shows great improvements on the structural properties of lignin-based carbon nanofibers, which can be applied as binder-free electric double layer capacitor (EDLC) electrodes with good flexibility. The 2032 type button battery has a superior electrochemical performance with a large specific capacitance of 217.2 F g −1 at a 0.2 A g −1 current density, and remarkable cyclic stability of 94.9 % capacitance retention even after 10,000 charge and discharge cycles, due to the abundance of mesoporous volume and large microporous surface area of lignin-based carbon nanofiber electrodes carbonized in 800 °C.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135132376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of cellulose nanofibril concentration and diameter on the quality of bicomponent yarns 纤维素纳米纤维浓度和直径对双组份纱线质量的影响

4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-09-26 DOI: 10.1515/npprj-2023-0039

Fernando Alves, Michel De Oliveira Picanço, Jair Rogerio Colares Neto, Tatiana de Fátima Martins Pires, Pedro Ygor Correia, Danillo Wisky Silva, Jordão Cabral Moulin

{"title":"Effect of cellulose nanofibril concentration and diameter on the quality of bicomponent yarns","authors":"Fernando Alves, Michel De Oliveira Picanço, Jair Rogerio Colares Neto, Tatiana de Fátima Martins Pires, Pedro Ygor Correia, Danillo Wisky Silva, Jordão Cabral Moulin","doi":"10.1515/npprj-2023-0039","DOIUrl":"https://doi.org/10.1515/npprj-2023-0039","url":null,"abstract":"Abstract The industrial sector is increasingly interested in the production of yarns based on renewable, efficient, innovative, and ecological resources. Among these precursors, cellulose nanofibrils (NFC) have gained attention due to their interesting characteristics for the development of new products. However, their dimensions pose challenges in their use. Therefore, this study aimed to analyze the influence of NFC concentrations and dimensions on the quality of bicomponent yarns. The bicomponent yarns were produced using a coaxial needle and the dry–wet-spinning method. The outer layer was made of guar gum (3 % w/v) and the inner layer of NFC bleached at two different degrees of refining (NFC A and NFC B). Yarn production involved varying concentrations of NFC (4.5 %, 3.5 % and 2.5 % w/v) NFC, which were characterized by real density analyses, tensile strength, water absorption, thermogravimetry, and scanning electron microscopy. Guar gum showed more hydrophilic characteristics, and its delay in hardening caused a less circular section and flaps on the side of the yarn. NFC B exhibited the smallest average diameter, and higher concentrations resulted in yarns with greater mechanical strength, more circular cross-sections, and fewer microstructural defects.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134885162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using guaiacol as a capping agent in the hydrothermal depolymerisation of kraft lignin 用愈创木酚作为水热解聚硫酸盐木质素的封盖剂

4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-09-26 DOI: 10.1515/npprj-2023-0013

Anders Ahlbom, Marco Maschietti, Rudi Nielsen, Merima Hasani, Hans Theliander

引用次数: 0

Water-dispersible paper for packaging applications – balancing material strength and dispersibility 包装用水分散纸。平衡材料强度和分散性

4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-09-26 DOI: 10.1515/npprj-2023-0048

Andrea Christine Pfennich, Elisabeth Anna Schoeffmann, Herfried Lammer, Ulrich Hirn

{"title":"Water-dispersible paper for packaging applications – balancing material strength and dispersibility","authors":"Andrea Christine Pfennich, Elisabeth Anna Schoeffmann, Herfried Lammer, Ulrich Hirn","doi":"10.1515/npprj-2023-0048","DOIUrl":"https://doi.org/10.1515/npprj-2023-0048","url":null,"abstract":"Abstract Water-dispersible paper is useful for packaging applications as it disintegrates into its fibers after usage, and also is a fully biodegradable material. Here, we first introduce a laboratory testing method for the disintegration performance of different paper grades under low agitation in water. Then a quantitative analysis on the technological and physical mechanisms responsible for dispersibility of paper is performed. We identify lignin content, degree of refining and addition of starch as relevant factors reducing paper dispersibility. Addition of a debonding agent, a non-ionic surfactant, was not found to be effective here. We found a strong correlation of both, wet- and dry tensile strength to dispersibility. From all water absorption related paper properties only ultrasonic liquid penetration measurements were correlated to paper dispersibility. Principal component analysis revealed that paper strength and water penetration speed are not governed by different latent variables but instead are all strongly associated with the first principal component. This suggests that the same mechanisms are responsible for reduction of water penetration speed and wet/dry strength. Hence we suggest to decouple network strength and water penetration, e.g. by identifying suitable additives imparting bonding strength without reducing the access of water which is required to break the fiber–fiber bonds.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134886051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Great potentials of lignin-based separator for Li-ion battery with electrospinning in aqueous system 木质素基静电纺丝分离机在水系锂离子电池中的应用前景广阔

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-09-04 DOI: 10.1515/npprj-2023-0028

Weipan Zhang, Peng-Yuan Hao, Lirong Lei, Yi Hou

{"title":"Great potentials of lignin-based separator for Li-ion battery with electrospinning in aqueous system","authors":"Weipan Zhang, Peng-Yuan Hao, Lirong Lei, Yi Hou","doi":"10.1515/npprj-2023-0028","DOIUrl":"https://doi.org/10.1515/npprj-2023-0028","url":null,"abstract":"Abstract Separator plays a key role in the safety and performances of lithium-ion batteries with the needs of good thermal stability and wettability. Compared with the commercial separator mainly made by polyolefins in organic solvents, the electrospinning of lignin/polyvinyl alcohol in an aqueous solution has been investigated as a green and economically viable method to produce high-performance separators without any other chemical additives. Lignin/polyvinyl alcohol (mass ratio: 3:7) nanofiber separators outperform commercial polypropylene separators in terms of porosity (71 %), liquid absorption (373 %), and outstanding thermal stability at 200 °C. Additionally, Li-ion battery cells that were constructed using different separators were assessed to demonstrate favorable electrochemical performance. The results showed that fabricated Li-ion battery with Lignin/polyvinyl alcohol (mass ratio: 3:7) nanofiber separators possesses a superior capacitance of 154.1 mA h g−1 at 0.5 C, and maintained outstanding cycle stability after 50 times of charging and discharging process at 0.5 C with the capacitance retention rate up to 98.7 %. The facile and sustainable synthesis strategy of lignin-based separator materials for Li-ion batteries developed in this work provides new perspectives for related research, especially based on environmentally friendly aqueous systems.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41838876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The influence of creases on carton board package behavior during point loading 点装过程中折痕对纸箱板包装性能的影响

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-09-04 DOI: 10.1515/npprj-2023-0021

Camilla Persson, Henry Eriksson, Christer Korin

{"title":"The influence of creases on carton board package behavior during point loading","authors":"Camilla Persson, Henry Eriksson, Christer Korin","doi":"10.1515/npprj-2023-0021","DOIUrl":"https://doi.org/10.1515/npprj-2023-0021","url":null,"abstract":"Abstract Carton board packages with different creases have been manufactured and loaded with point loads to see if there is a difference in point load behavior depending on crease. A carton board was creased in four different ways. The differences of the creases were judged according to appearance and residual moment. Three of the four creases showed divergent appearances. The residual moment was as expected lowest for the hardest creased sample and vice versa. The packages with the different creases were loaded with a point load. The registered force – displacement curves were analyzed according to stiffness and collapse load. No statistically significant difference could be seen in the collapse load of the package or in the stiffness measured, indicating that with a standard point load measurement it was hard to distinguish a difference in packaging behavior due to creasing. In future work it might be interesting to further study the average stiffness, since a trend of higher average stiffness for lower matrix channel depth exists in the measurements, however not statistically ensured. One possibility to discern possibly existing differences in the resistance of packaging to point load due to crease differences could be to study the interaction in more detail.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46328497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frontmatter 头版头条

4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-09-01 DOI: 10.1515/npprj-2023-frontmatter3

引用次数: 0

Effects of trace elements (Fe, Cu, Ni, Co and Mg) on biomethane production from paper mill wastewater 微量元素(Fe、Cu、Ni、Co和Mg)对造纸厂废水生产生物甲烷的影响

IF 1.2 4区农林科学

Nordic Pulp & Paper Research Journal Pub Date : 2023-08-29 DOI: 10.1515/npprj-2023-0009

D. Toprak, Tulay Yilmaz, Kerem Gülpınar, A. Yücel, Yakup Çakmak, D. Ucar

{"title":"Effects of trace elements (Fe, Cu, Ni, Co and Mg) on biomethane production from paper mill wastewater","authors":"D. Toprak, Tulay Yilmaz, Kerem Gülpınar, A. Yücel, Yakup Çakmak, D. Ucar","doi":"10.1515/npprj-2023-0009","DOIUrl":"https://doi.org/10.1515/npprj-2023-0009","url":null,"abstract":"Abstract Trace elements have a significant effect on biochemical reactions and therefore the presence of optimum levels of trace elements is essential for bioreactor performances. In this study, the effects of five trace elements on biomethane production have been investigated. Experimental studies have been carried out with multiple batch reactors at 15 day HRT and mesophilic temperatures. The optimum concentrations for each of the trace elements Fe, Cu, Ni, Co and Mg were found as 5, 0.5, 0.5, 0.5 and 100 mg/L, respectively. Among tested trace elements, Cu was the one which provided the highest biomethane production. Cu addition was resulted in a 46 % increase in biomethane production followed by Co with 24 %. The biomethane production rate for these two trace elements was 191.70 and 110.77 ml CH4/g COD, respectively. Optimum levels for Ni, Fe and Mg increased biomethane production rate by approximately 14.3, 10 and 17 % compared to control groups, respectively. Because the exact amount of trace element requirement for each industry/reactor is different, specific case studies should be performed for each application. These results could be used as initial trace element concentrations for further continuous studies.","PeriodicalId":19315,"journal":{"name":"Nordic Pulp & Paper Research Journal","volume":" ","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43486176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0