Journal articles: 'Papermaking'

1

Shimizu, Ryozo. "Papermaking. NextLevel." JAPAN TAPPI JOURNAL 72, no. 3 (2018): 304–7. http://dx.doi.org/10.2524/jtappij.72.304.

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Gao, Biao. "Application Research on Cleaner Production Auditing in Papermaking Enterprise." Advanced Materials Research 1033-1034 (October 2014): 378–81. http://dx.doi.org/10.4028/www.scientific.net/amr.1033-1034.378.

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In order to achieve sustainable development of the papermaking industry, the papermaking enterprises must devote major efforts to implement cleaner production and cleaner production auditing. Based on the objectives and basic ideas of cleaner production auditing, the article took one papermaking enterprise in Baicheng city of Jilin Province as an example and studied deeply how to implement cleaner production auditing in papermaking enterprise, in order to hold a mirror to papermaking enterprise in cleaner production auditing.

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Allen, Nancy S. "JAPANESE PAPERMAKING: PAPERMAKING TRADITIONS, TOOLS, AND TECHNIQUES. Timothy Barrett." Art Documentation: Journal of the Art Libraries Society of North America 4, no. 3 (October 1985): 133. http://dx.doi.org/10.1086/adx.4.3.27947483.

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Zhu, Xiu Lian, Feng Chen, Bing Yue, Jie Wang, Yan Jun Cheng, and Ming Heng Tong. "Circulation Economic Model is the Necessary Selection Sustainable Development of Chinese Paper Industry." Applied Mechanics and Materials 174-177 (May 2012): 3527–30. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.3527.

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Constructing papermaking industry eco-industrial park is a importance way which can solve the dilemma of resource, environment, and economic development from enterprise group hierarchy. By ecological theories of “key specises” and eco-industrial chain, this paper analyses the feasibility of china’s papermaking industry constructing eco-industrial park. By way of case analysis, prove that constructing papermaking industry eco-industrial park is a feasible way of realizing sustainable development of china’s papermaking industry.

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Rosenband, Leonard N. "The Industrious Revolution: A Concept Too Many?" International Labor and Working-Class History 90 (2016): 213–43. http://dx.doi.org/10.1017/s014754791600017x.

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AbstractMuch of the recent debate in early modern European labor and economic history has centered on Jan de Vries’s concept of the industrious revolution. Briefly, he claimed that workers during the period 1650-1800 chose to labor longer hours, often at greater intensity, in order to consume novel manufactured goods and imported commodities. Moreover, plebeian families increasingly pursued new employments beyond the household to pay for these objects. As a result, men, women, and children spent ever more hours in waged labor, and their growing purchasing power proved decisive in stimulating large-scale European industrialization. My work on the history of French and English papermaking raises fundamental challenges to this model. First, paperworkers already labored exhausting hours at the outset of de Vries’s period of newfound industriousness. Second, masters and workers alike knew that they had to both “speed up” and “take their time” to turn out quality paper at the expected rate. Third, women and adolescent workers toiled for wages in paper mills long before the seventeenth and eighteenth centuries. On the eve of large-scale mechanization, enduring shopfloor realities, skills, and quotas prevented a surge of productivity beyond papermaking’s familiar standards. With the demand for paper rising rapidly, it was the absence of an industrious revolution in papermaking that turned the manufacturers’ attention first to enlarged mills and small technological shifts, and finally, to the development of a papermaking machine.

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Kon, Mun Yue, and Liang Hsing Chou. "The Eco-Concrete with the Papermaking Sludge." Applied Mechanics and Materials 670-671 (October 2014): 454–57. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.454.

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Porous concrete planted with grass is attractive both environmentally and esthetically for applications in residential driveway, sidewalk and parking lots. Disposal of papermaking sludge is a challenging environmental problem. As a possible solution, grass cultivation in porous concrete filled with mixtures of papermaking sludge and soil was studied. Bermuda grass, Perennial ryegrass, and Tall Fescue were tested. Experimental results showed that the papermaking sludge retarded the germination of grass seeds only slightly, while promoted the growth of grass stems and the development of grass roots significantly. The optimum ratio of the papermaking sludge to soil appears to be in the range of 25 to 50%. Therefore, it is believed that papermaking sludge is suitable for grasses cultivation in the porous concrete.

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Cai, Mengling. "Overview of paper and papermaking in Xinjiang, China." Z Badań nad Książką i Księgozbiorami Historycznymi 14, no. 3 (November 18, 2020): 411–25. http://dx.doi.org/10.33077/uw.25448730.zbkh.2020.631.

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Papermaking in Xinjiang has a long history beginning during the Han Dynasty, to which a good many ancient documents excavated there bear witness. As an important transmitter of culture along the Silk Road, paper bears the imprint of the historical development of Xinjiang. Paper and papermaking techniques in Xinjiang are therefore of great historical and cultural importance. This article gives an overview of the development of traditional papermaking in Xinjiang, especially the mulberry papermaking in the Hotan area, by presenting its history, the raw materials used, papermaking and processing techniques, usages and the revival of handmade mulberry paper today in order to demonstrate its diverse values.

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Liu, Yong Min, Ce Shi, and Ling Ling Shang. "Effects of Influent pH on Papermaking Black Liquor Treatment with WAO Method." Applied Mechanics and Materials 260-261 (December 2012): 1257–62. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.1257.

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Papermaking black liquor was processed with WAO method，Chroma of papermaking black liquor water was 1,250,000 times and COD concentration was7028 mg/L. Effects of influent pH on its treatment were researched. The CODCr, absorbance, turbidity and pH of effluent water were determined. COD removal, decolorization removal, turbidity removal were analyzed. The results showed that: treatment effects gradually weakened with the increase of influent pH in the treatment of papermaking black liquor with WAO method. Influent pH was in between 3.0 to 7.0 appropriate. When papermaking black liquor was processed by wet air oxidation after, COD removal, decolorization and turbidity removal basically improved with the extension of time, reaction time set at 60 min was appropriate.

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Zhou, Yan Ming, Ji Geng Li, and Huan Bin Liu. "The Abstract Device Models and the General Mathematical Models for Energy and Exergy Analyse in Papermaking Mill." Advanced Materials Research 499 (April 2012): 160–64. http://dx.doi.org/10.4028/www.scientific.net/amr.499.160.

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There are huge potential energy-saving in the papermaking mill. However the modelling and simulation of papermaking mills currently mainly focus on the material flow in the papermaking process, there are few energy analyses of the whole papermaking mill and even fewer exergy analyses. In order to achieve the goals of energy-saving, this paper presents the basic works before establish the general framework of modelling and online simulation in papermaking mill, which are how to abstract the specific device and construct their corresponding mathematics models, not only for material analyze, but also for energy and exergy analyze, and at the same time, for different materials’ energy and exergy analyze, this paper gives the general mathematics models respectively. Use these models, it can do the energy and exergy analysis of the flux material, such as coal, diesel oil, natural gas, liquefied petroleum gas, water, condensate, dry atmosphere, wet atmosphere, steam, dope, slurry, wet and dry paper etc,. Base on those models, it can establish the specific device mathematical models to diagnose, analyze, optimize and simulate online the energy system of the papermaking factory. For calculating energy and exergy automatically, this paper established the property database of the water, water vapor, dry and wet atmosphere, flue gas, boiler heat dissipation and ash.

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Abd El-Sayed, Essam S, Mohamed El-Sakhawy, and Mohamed Abdel-Monem El-Sakhawy. "Non-wood fibers as raw material for pulp and paper industry." Nordic Pulp & Paper Research Journal 35, no. 2 (June 25, 2020): 215–30. http://dx.doi.org/10.1515/npprj-2019-0064.

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AbstractPulp and paper industry in the world have been growing fast. As a result, there has been a massive request for pulp and paper raw materials. The raw materials used in papermaking can be classified into three groups: wood, non-wood, and recycled wastepaper. The Non-wood raw material is an important fiber resource in the regions where forest resources are limited. The current usage of non-wood plant fibers, as rice straws, corn stalks, cotton stalks, and bagasse would play a chief role in increasing papermaking raw materials. Using of non-wood plant fibers in the paper industry associated with some problems, including collection, transportation, storage and handling, washing, bleaching, papermaking, chemical recovery, supply of raw material and the properties of finished paper. Recently, a high-tech innovation in all the fields of papermaking has made non-wood more reasonable with wood as a raw material for papermaking. Although till now, use of non-wood fibers for pulp and paper manufacture was focused in countries with limited wood supply, it is now showing a growing effort even in countries with acceptable wood source due to environmental concerns. Consequently, the future of non-wood plant fibers as pulping and papermaking raw material looks bright.

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11

Shimizu, Ryozo. "Papermaking 4.0 Concept of VOITH Paper." JAPAN TAPPI JOURNAL 70, no. 3 (2016): 263–67. http://dx.doi.org/10.2524/jtappij.70.263.

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12

Dang, Shihong, and Wei Tang. "Real-Time Data Scheduling of Flexible Job in Papermaking Workshop Based on Deep Learning and Improved Fuzzy Algorithm." Mobile Information Systems 2021 (April 9, 2021): 1–12. http://dx.doi.org/10.1155/2021/9930740.

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The traditional real-time data scheduling method ignores the optimization process of job data that leads to delayed delivery, high inventory cost, and low utilization rate of equipment. This paper proposes a novel real-time data scheduling method based on deep learning and an improved fuzzy algorithm for flexible operations in the papermaking workshop. The algorithm is divided into three parts: the first part describes the flexible job shop scheduling problem; the second part constructs the fuzzy scheduling model of flexible job data in papermaking workshop; and finally the third part uses a genetic algorithm to obtain the optimal solution of fuzzy scheduling of flexible job data in papermaking workshop. The results show that the optimal solution is obtained in 48 seconds at the 23rd attempt (iteration) under the application of the proposed method. This result is much better than the three traditional scheduling methods with which we compared our results. Hence, this paper improves the work efficiency and quality of papermaking workshop and reduces the operating cost of the papermaking enterprise.

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13

Su, Na. "Spherical Polyelectrolyte Brushes as Flocculants and Retention Aids in Wet-End Papermaking." Molecules 28, no. 24 (December 7, 2023): 7984. http://dx.doi.org/10.3390/molecules28247984.

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As the criteria of energy conservation, emission reduction, and environmental protection become more important, and with the development of wet-end papermaking, developing excellent retention aids is of great significance. Spherical polyelectrolyte brushes (SPBs) bearing polyelectrolyte chains grafted densely to the surface of core particle have the potential to be novel retention aids in wet-end papermaking not only because of their spherical structure, but also due to controllable grafting density and molecular weight. Such characteristics are crucial in order to design multi-functional retention aids in sophisticated papermaking systems. This review presents some important recent advances with respect to retention aids, including single-component system and dual-component systems. Then, basic theory in papermaking is also briefly reviewed. Based on these advances, it emphatically describes spherical polyelectrolyte brushes, focused on their preparation methods, characterization, conformation, and applications in papermaking. This work is expected to contribute to improve a comprehensive understanding on the composition, properties, and function mechanisms of retention aids, which helps in the further investigation on the design of novel retention aids with excellent performance.

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Nambisan, Padma. "Utilization of weeds and agriwaste by popularizing handpapermaking in Kerala, India." BioResources 5, no. 3 (2010): 1332–35. http://dx.doi.org/10.15376/biores.5.3.1332-1335.

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Kerala in south India grows several cash crops such as banana and pineapple, the crop residues of which are sources of natural fibres that can be used in hand papermaking. Kerala, however, does not have a tradition in hand papermaking. The following is an account of an attempt to popularize the art and craft of hand papermaking among self-help groups as a means of self-employment and waste utilization, using fibres extracted from agriwaste and local plants.

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15

Liu, Quan Xiao, and Wen Cai Xu. "Study on Cationic Starch Graft Copolymer in Papermaking Wastewater Treatment." Advanced Materials Research 356-360 (October 2011): 1990–93. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1990.

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Paper industry is one of the major environmental pollution industries in china, pulp and paper industry wastewater discharge amount is from 10% to 12% of the national total wastewater discharge amount. Cationic starch graft copolymer was prepared in laboratory and used to treat papermaking wastewater. The effects of its cationic degree, dosage, flocculation temperature, flocculation time and the combination with alum on papermaking wastewater treatment were investigated. It was found that the best flocculation in the treatment of papermaking wastewater is achieved when cationic degree of cationic starch graft copolymer is 27.38%, adding amount is 15mL, flocculation temperature is 50°C and the mass ratio of alum to cationic starch graft copolymer is 2: 1. The flocculation of composite flocculant made up with alum to cationic starch graft copolymer to papermaking wastewater is much better than only cationic starch graft copolymer is used.

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16

Arnson, Thomas R. "The chemistry of aluminum salts in papermaking." April 2022 21, no. 4 (May 1, 2022): 229–34. http://dx.doi.org/10.32964/tj65.3.125.

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Alum and related aluminum salts are used extensively in a variety of papermaking operations. The versatility of these aluminum additives stems from the ability of the various aluminum species to adsorb and interact with the other materials in the papermaking system. Underlying these interactions is the aqueous chemistry of the aluminum ion. A review of the current views on the aqueous chemistry of the aluminum ion and papermaking aluminum chemistry is presented. Application of the aqueous aluminum equilibria to aluminum adsorption and alum-rosin sizing are also discussed.

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Shimizu, Ryozo. "Papermaking 4.0 New Concept of VOITH Paper." JAPAN TAPPI JOURNAL 71, no. 7 (2017): 765–69. http://dx.doi.org/10.2524/jtappij.71.765.

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Kaunonen, Antti, and Kiyoshi Hamada. "Embedded Papermaking Process Management." JAPAN TAPPI JOURNAL 53, no. 3 (1999): 342–51. http://dx.doi.org/10.2524/jtappij.53.342.

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19

Buikis, A., J. Cepitis, H. Kalis, A. Reinfelds, A. Ancitis, and A. Salminš. "Mathematical Models of Papermaking." Nonlinear Analysis: Modelling and Control 6, no. 1 (April 1, 2001): 9–19. http://dx.doi.org/10.15388/na.2001.6.1.15221.

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The mathematical model of wood drying based on detailed transport phenomena considering both heat and moisture transfer have been offered in article. The adjustment of this model to the drying process of papermaking is carried out for the range of moisture content corresponding to the period of drying in which vapour movement and bound water diffusion in the web are possible. By averaging as the desired models are obtained sequence of the initial value problems for systems of two nonlinear first order ordinary differential equations.

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SHIRAISHI, Masato. "High-Speed Papermaking Technology." Journal of the Society of Mechanical Engineers 109, no. 1054 (2006): 726–27. http://dx.doi.org/10.1299/jsmemag.109.1054_726.

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21

Morton, Julia F. "Plant fiber for papermaking." Economic Botany 40, no. 1 (January 1986): 102. http://dx.doi.org/10.1007/bf02858950.

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Skočaj, Matej. "Bacterial nanocellulose in papermaking." Cellulose 26, no. 11 (June 14, 2019): 6477–88. http://dx.doi.org/10.1007/s10570-019-02566-y.

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Lundell, Fredrik, L. Daniel Söderberg, and P. Henrik Alfredsson. "Fluid Mechanics of Papermaking." Annual Review of Fluid Mechanics 43, no. 1 (January 21, 2011): 195–217. http://dx.doi.org/10.1146/annurev-fluid-122109-160700.

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Goedvriend, G. J. M. "Papermaking past and present." Endeavour 12, no. 1 (January 1988): 38–43. http://dx.doi.org/10.1016/0160-9327(88)90209-8.

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Hämäläinen, Jari, Elina Madetoja, and Henri Ruotsalainen. "Papermaking: Simulation-based Optimization and Decision Support for Conflicting Objectives in Papermaking." Nordic Pulp & Paper Research Journal 25, no. 3 (August 1, 2010): 405–10. http://dx.doi.org/10.3183/npprj-2010-25-03-p405-410.

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Zhu, Yong Qiang, Dong An, Wei Hong Xia, Ping Cao, and Zhan Jun Zhang. "Strengthening Effects of Cleaner Papermaking Additives WEC on Papermaking with Second Fiber." Advanced Materials Research 1065-1069 (December 2014): 3201–5. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.3201.

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Effects of additives WEC on strength properties of second fiber were investigated in this study. For single use of WEC02A, the improvement of ring crush index was most remarkable, which increased by 21% for bottom pulp and 31% for surface pulp. Significant increase was also achieved in burst index while the improvement of tightness and folding endurance was not obvious. Besides, combined use of 0.2% WEC02 and 0.3% WEC03S improved folding endurance, burst index and ring crush index of pulp by remarkable 105%, 23% and 52%, respectively, showing a great performance for pulp strength enhancement, being beneficial to broadening the utilization of second fiber.

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Ming, Xianglan, Qichao Li, and Wei Jiang. "Application of aluminum sulfate in the treatment of papermaking white water." BioResources 16, no. 1 (January 6, 2021): 1382–93. http://dx.doi.org/10.15376/biores.16.1.1382-1393.

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Physical chemical methods were used to treat papermaking white water used to produce plant fiber mulch sheet that contained fine fibers and inorganic fillers as suspended solids. The ordinary chemical oxygen demand (CODCr) was obviously reduced after the papermaking white water was treated by the flocculant. By comparing three different coagulants (aluminum sulfate (Al2(SO4)3), poly-aluminum chloride (PAC), and poly(diallyldimethylammonium chloride) (PDADMAC)) and flocculant (poly-acrylamide copolymer (PAM)) to process papermaking white water, it was found that Al2(SO4)3 had the best coagulation effect and the lowest cost. The best flocculation conditions were 2,733 mg/L of Al2(SO4)3 and 4.52 mg/L of PAM to treat the papermaking white water. Under the best flocculation conditions, the CODCr was less than 300 mg/L. The goal of closed recycling and zero discharge of white water in the production process of plant fiber mulch sheet was realized.

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Miao, Zong Cheng, Fang Wang, Deng Deng, Lei Wang, and Jian Zhou Yang. "Removal Effect of Potassium Ferrate to COD in Different Wastewater." Advanced Materials Research 550-553 (July 2012): 2288–90. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2288.

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In order to research the removal effect of potassium ferrate to COD in the different wasterwater, the papermaking wastewater and the tanning wastewater were used as research objects. This paper was focused on evaluating the effectiveness of potassium ferrate preoxidation on COD removal by coagulation in different wastewater of papermaking and tanning. Potassium ferrate is a strong oxidant in the entire pH range: its redox potentials are 2.20 and 0.72 V in acidic and basic media, respectively ferrate (VI) ions will be reduced to Fe (III) ions or ferric hydroxide during the oxidation process, potassium ferrate has also the ability to act as coagulant. The removal efficiency was 78.21% to the papermaking wastewater and 85.51% to the tanning wastewater, respectively, when the dosage concentration of potassium ferrate was 20 mg/L. Altogether, potassium ferrate is a perfect sewage treatment agent to papermaking wastewater and tanning wastewater.

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Zhang, Sen, Guangyuan Qin, Ling Wang, Baodong Cheng, and Yuan Tian. "Evolutionary Game Research between the Government Environmental Regulation Intensities and the Pollution Emissions of Papermaking Enterprises." Discrete Dynamics in Nature and Society 2021 (September 9, 2021): 1–13. http://dx.doi.org/10.1155/2021/7337290.

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Environmental regulations of different intensities may have different impacts on polluting enterprises. The purpose of this article is to analyze how different environmental regulations affect the pollution discharge strategies of papermaking enterprises. By establishing an evolutionary game model between the government environmental regulation intensities and the pollutant emissions from papermaking enterprises, this thesis further solves the model and performs stability analysis and finally uses MATLAB to conduct simulation studies. And the researching results show that papermaking enterprises will take risks to choose the illegal pollutant discharge strategies when the illegal profits are large. Further analysis shows that the increase in the successful probability of the strong environmental regulations does not necessarily force papermaking enterprises to choose to comply with pollution discharge regulations. However, papermaking enterprises may choose to comply with discharge pollution regulations not only by increasing the successful probability of strong environmental regulations but also by increasing the rewards and punishments for papermaking enterprises as well as by increasing the probability of reporting violations of pollutants. Based on the above results, the author proposes several countermeasures, such as establishing a specialized pollution monitoring agency, encouraging third-party supervision, reporting pollution behaviors, and increasing penalties for polluting companies for violations. China is in a critical period of transition from rapid development to high-quality development. It will provide some reliable references for the construction of a green economy and an ecological economy that the characteristics and relationships between the intensity of government environmental regulations and corporate pollution emissions revealed in this article.

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Mohammadi Nematabad, Sina, Shademan Pourmousa, Ajang Tajdini, Ahmad Jahan Latibari, and Amir Lashgari. "Identifying and ranking components of manufacturing sustainability in the Iranian papermaking industry." BioResources 18, no. 1 (November 15, 2022): 382–99. http://dx.doi.org/10.15376/biores.18.1.382-399.

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Factors of manufacturing sustainability in the papermaking industry were identified and ranked using qualitative analysis and nonparametric tests. Based on a review of the literature on sustainable development and production, seven main factors of economic, environmental, technological, social, human, material and product, and regulations were identified to underpin the manufacturing sustainability in the papermaking industry, as well as some sub-factors. Then, a self-designed questionnaire was developed to take a poll among papermaking managers and experts regarding the effectiveness of the factors and sub-factors in manufacturing sustainability and their status. The factors affecting manufacturing sustainability in the papermaking industry were confirmed by the standard and significance coefficients in the structural equations and the predictive criterion. The cross-validated redundancy index showed that the data were valid enough for prediction. The research factors were ranked by the ordinal average affecting sustainability, current status, and distance to sustainability. The materials and product, environmental, technological, and economic factors had the greatest influence on manufacturing sustainability, and the regulation and human factors had the highest distance to sustainability. To achieve manufacturing sustainability in the papermaking industry, regulations and human factors need to be further studied. Their improvement has potential to achieve manufacturing sustainability.

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Jiang, Yan, Nai Yan Wang, Jian Wei Huang, Tao Hu, Ming Xin Zhang, Yao Feng Zhang, and Yao Gang Li. "Biodegradability Enhancement of Papermaking Wastewater by Electron Beam Irradiation." Applied Mechanics and Materials 454 (October 2013): 246–49. http://dx.doi.org/10.4028/www.scientific.net/amm.454.246.

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Papermaking wastewater is one of six industry polluted sources. It generally contains various pollutants which can cause many problems during biological treatment. The biodegradability of papermaking wastewater was enhanced by electron beam irradiation with an activated sludge process. The value of the BOD5/COD ratio increased at a 20kGy dose. The non-biodegradable organic compounds were converted into biodegradable compounds. High organic removal efficiencies and high microbial activities were achieved in activated sludge process. The application of an integrated system can be a powerful process which contains electron beam irradiation and a biological treatment to papermaking wastewater.

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Linnala, Mikko, Henri Ruotsalainen, Elina Madetoja, Jouni Savolainen, and Jari Hämäläinen. "Dynamic simulation and optimization of an SC papermaking line – illustrated with case studies." Nordic Pulp & Paper Research Journal 25, no. 2 (May 1, 2010): 213–20. http://dx.doi.org/10.3183/npprj-2010-25-02-p213-220.

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Abstract Dynamic modeling and simulation software can be used to simulate the industrial processes such as papermaking in order to improve the efficiency of the process. A dynamic simulation model can be combined with an optimization method to maximize the advantages which simulation tools can offer. In this paper, we combine dynamic process simulation and optimization to see how it can benefit a papermaking process which was envisaged to consist of a TMP mill, stock preparation, short circulation, a paper machine, and a reel. The aim is to increase the efficiency and minimize the costs involved in papermaking.

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Teacă, Carmen-Alice. "Making paper from materials that are essential to our lives/making paper without trees is the new “Must”." BioResources 18, no. 3 (May 2, 2023): 4379–82. http://dx.doi.org/10.15376/biores.18.3.4379-4382.

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Paper, which is in fact a very complex cellulose-based product derived from different lignocellulosic resources, is usually regarded as a simple omnipresent commodity in our lives. Wood fibers derived from trees are the most employed sources for papermaking purposes. From an environmental protection perspective, and for their essential role in our life (they give us the life itself through their foliar system supporting the photosynthesis process), trees should not be extensively cut down and they should be used less and less for papermaking. Thus, employment of non-woody alternative sources for papermaking could be exploited more as an attractive and feasible option.

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PRUSZYNSKI, PRZEMYSLAW, LEBO XU, and PETER W. HART. "Water chemistry challenges in pulping and papermaking – fundamentals and practical insights: Part 2: Conductivity, charge, and hardness." June 2023 22, no. 6 (July 1, 2023): 423–37. http://dx.doi.org/10.32964/tj22.6.423.

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Although water is essential to the papermaking process, papermakers often overlook its importance and focus on fibers, fillers, and chemical additives. A better understanding of water properties and chemical interactions associated with water at the wet end leads to a sound foundation for high-quality paper production and smooth operation. Water is an excellent solvent for ionic substances, both organic and inorganic. These substances contribute to system conductivity, charge, and hardness and significantly impact the papermaking process. Part 1 of this paper, published in TAPPI J. 21(6): 313(2022), discussed fundamental water properties, water chemistry, and the impact of pH on pulping and papermaking operations. In this paper, we review definitions, sources, and the typical symptoms of the effect of conductivity, charge, and hardness on the productivity of the papermaking process. Sources of conductivity, charge, and hardness impacting these factors, measurement methods, and available correction strategies for their control are also discussed.

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Su, Dong Hai, and Zhi Zhang. "Paper Machine Boots Type Press Control System Analysis." Advanced Materials Research 711 (June 2013): 291–93. http://dx.doi.org/10.4028/www.scientific.net/amr.711.291.

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In the papermaking process, improve the efficiency of dehydration is the most important part of the control system of the paper machine press section, in order to improve the the papermaking efficiency and the quality of paper, the paper analyzed, the shoe working hydraulic oil passage analyzed.

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Zhu, Yong Qiang, Yu Ling Feng, Hai Ying Zhang, and Zhan Jun Zhang. "Advanced Processing of Biologically-Treated Papermaking Wastewater by Poly-Aluminum Chloride (PAC)." Applied Mechanics and Materials 409-410 (September 2013): 129–32. http://dx.doi.org/10.4028/www.scientific.net/amm.409-410.129.

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In this study, biologically treated paper-making wastewater was treated using PAC to study removal efficiency of color as a function of pH and dosage of PAC. It was found that PAC was relatively effective in removing color from biologically papermaking wastewater. The optimal dosage, pH and stirring time were 40 mL L-1, 5 and 30 min, respectively. Effluent color after coagulation at the optimal conditions was 40 PCU, meeting requirements of Industrial Wastewater Discharge Standard of Pulping and Papermaking (GB3544-2008) . Therefore, PAC dosage of 40 mL L-1 and pH of 5 were recommended for treatment of biologically treated papermaking wastewater.

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Meng, Xian Lin, Jian Hua Qu, and Liang Hua Yu. "Study on the Assessment Method of Wastewater Treatment Technologies Based on Comprehensive Scoring Method." Advanced Materials Research 788 (September 2013): 418–21. http://dx.doi.org/10.4028/www.scientific.net/amr.788.418.

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Technology assessment is one of the important means of technology management. To assess and screen out the optimal papermaking wastewater treatment technology, this paper proposed an assessment method based on comprehensive scoring method, and an index system contains four aspects including processing effect, cost-benefit, processing time and sustainability and ten indexes was established through analytic hierarchy process. Take the papermaking wastewater treatment technologies in region A for example, four typical technologies was assessed. The result reflected that flotation technology was superior to electrodialysis, which was superior to chemical oxidation technology. It showed the assessment method could be well applied to assess papermaking wastewater treatment technologies in region A.

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Liu, Xing Ping, and Zhong Jun Xiao. "Application of Distributed Control System in Papermaking Process Based on CIPS Technology." Applied Mechanics and Materials 236-237 (November 2012): 186–91. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.186.

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According to the user’s high technical requirement in papermaking process, advanced control system has been supplied to satisfy the performances. Meanwhile, energy consumption and cost are considered. The computer integrated process system (CIPS) of process industry which could effectively integrate enterprise resource planning, management execution system and process control system information is necessary and suitable for papermaking process. Here based on the analysis of pulp and paper process, we put forward the papermaking process computer integrated process system and try to obtain the optimal control project and execution system. And a novel optimized application project based on SIMATIC PCS7 distributed control system proves the excellence of computer integrated process system.

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Madani, Ario, James A. Olson, D. Mark Martinez, and Alan Fung. "Paper Chemistry and papermaking suspensions: Novel methods to characterize and fractionate papermaking fibres." Nordic Pulp & Paper Research Journal 25, no. 4 (December 1, 2010): 448–55. http://dx.doi.org/10.3183/npprj-2010-25-04-p448-455.

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Wang, Mei, Ming Yang, Ke Wu Pi, and Lin Xia Gao. "Analysis and Practice of Cleaner Production in a Wastepaper Papermaking Enterprise." Applied Mechanics and Materials 535 (February 2014): 237–40. http://dx.doi.org/10.4028/www.scientific.net/amm.535.237.

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Cleaner production is one of sustainable development approaches for wastepaper papermaking industry. Current situation of a wastepaper papermaking enterprise was analyzed, and it showed that the unit product energy consumption, pollutant generation had large cleaner production potential. 16 cleaner production solutions were generated through material balance analysis, advanced technologies collection, experts consultation and other ways. After the plans were carried out, 7.83% of pollutants were cut down, 7.62% of energy was saved, 1.57% of waste paper was reduced, 1.68% of dry fiber raw material was decreased, and 8.80% of reused industrial water increased equally. Cleaner production was an effective way for wastepaper papermaking industry to save energy, reduce energy consumption, reduce pollution, and increase benefit.

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41

Robertson, A. A. "Investigation of the cellulose-water relationship by the pressure plate method." October 1965 48, no. 10 (August 1, 2022): 568–73. http://dx.doi.org/10.32964/tj48.10.568.

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The water retention properties of papermaking fibers have been investigated by a "pressure plate" technique which permits a measurement of equilibrium moisture contents of pulp samples at precisely controlled relative vapor pressures between 0.99 and 1.00. This range encompasses the water contents of interest in papermaking from the table to the middle of the drier section. Water retention isotherms are drawn and are satisfactorily related to desorption isotherms which have been reported in the literature. Isotherms for a variety of pulps are reported. These are related to the papermaking properties of the fibers and show the effects of wood species, cooking method, pulp yield, bleaching, drying, and beating on the cellulose-water relationship.

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Bai, Wei Guo, Xiao Si Ma, and Yi Jing. "Research on Effect of Paper Containing OBA on Color Reproduction." Advanced Materials Research 463-464 (February 2012): 138–42. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.138.

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Adding Optical Brightening Agent (OBA) during papermaking has been widely used in modern papermaking industry in order to improve paper whiteness. Because of ISO standard data is based on the paper without OBA, it makes a great diversity of result in color reproduction, and causes the printing production not to meet international standards. This research contrasted ISO whiteness and chroma value of paper with different amount of OBA, analyzed spectral data and tone in color reproduction of paper with different amount of OBA, then got the law of the effect of the ratio of OBA on ISO whiteness and chroma value, and the effect on color reproduction tone level in printing process. It can provide the reference for adding OBA during papermaking.

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Liu, Zhuang, and Yanhua Chen. "Cultural Study on traditional Chinese Papermaking: Problem Awareness and Research Review." Revista Brasileira de Pesquisas Jurídicas (Brazilian Journal of Law Research) 2, no. 2 (May 25, 2021): 183–209. http://dx.doi.org/10.51284/rbpj.02.liu.

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Papermaking is one of the outstanding creations of the Chinese nation, from the “Cai Lun’s Technique” of the Eastern Han Dynasty to the “Four Great Inventions” of modern times and further to the present academic hotspot of “intangible cultural heritage”. The naming and expression of this object reflect the cultural cognition and interpretation of papermaking in different periods of time. It is important to note that, in the context of the intercommunication between Eastern and Western discourses, the study of papermaking is not only about the exploration of the scientific value of a traditional technique, but also is the re-examination of the communication and dissemination of cultures and technologies between the East and the West, in order to form a new understanding of “Sinicized Europe”.

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Wan Daud, Wan Rosli, and Kwei-Nam Law. "Oil palm fibers as papermaking material: Potentials and challenges." BioResources 6, no. 1 (December 7, 2010): 901–17. http://dx.doi.org/10.15376/biores.6.1.901-917.

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This paper reviews the physical and chemical characteristics of fibers from the stem, fronds, and empty fruit bunches of oil palm tree in relation to their papermaking properties. Challenges regarding the use of this nonwood material for papermaking are raised, and possible solutions to them are given. A vision for the complete utilization of oil palm biomass is also outlined.

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Jiang, Shiyue, Binjie Li, and Yufei Shen. "The Influence of Pulp and Paper Industry on Environment." E3S Web of Conferences 308 (2021): 02007. http://dx.doi.org/10.1051/e3sconf/202130802007.

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Currently, paper consumption is globally increasing and at an unsustainable level. However, traditional paper production could release excessive greenhouse gas emissions or wastewater, resulting in environmental contamination. To make the result more visual and persuasive, this study takes Time magazine as an example to analyze the impacts of the papermaking process on the environment. This study analyzes energy consumption from several sectors in the paper industry, carbon dioxide emissions, and discharge of condensed wastewater to show current consumption during traditional pulp and paper production. Results show that the papermaking process would consume a lot of electricity during the pulp preparing, pulp condition, pulp preparation, manufacture paper with pulp, and pulp processing stages. Meanwhile, various degree of carbon emissions is generated based on the physical and chemical changes in materials during the papermaking process. Two kinds of wastewater, including black and white liquor, are produced in the papermaking process. Several countermeasures are suggested to achieve a low consumption and sustainable development of the pulp and paper industry to solve these environmental problems. The suggestion includes the surrogate of electronic paper, carbon capture and storage, and wastewater recycling.

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Kmiotek, Magdalena, Katarzyna Dybka-Stepien, Roman Molas, Anna Kiełtyka-Dadasiewicz, Magdalena Gapinska, Sława Glinska, Mariusz Sicinski, and Mateusz Imiela. "Sida hermaphrodita Rusby as a papermaking raw material – Chemical and morphological characteristics." BioResources 19, no. 3 (May 16, 2024): 4381–95. http://dx.doi.org/10.15376/biores.19.3.4381-4395.

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A continually increasing demand for papermaking materials and simultaneously growing disproportion between the request for fiber and the limited resources of wood have forced scientists and the papermaking industry to search for the new sources of fibrous raw materials. A new promising set of raw materials for papermaking comes from energy crops. This paper presents Sida hermaphrodita Rusby L., as a non-woody raw material for papermaking. From the studies of chemical composition, it follows that cellulose content of more than 40% characterizes phloem of stems and branches, whereas in xylem exhibits more than 32%. The lowest is the concentration of cellulose in leaves and flowers of Sida. The content of lignin is lower than 24% and 16% in stem xylem and phloem, respectively. In Sida, hemicelluloses and mineral substances stand for being not more than 30% and 2%, respectively. The morphology of Sida cells is similar to hardwood, with fiber length of 0.383, 0.470 and 1.025 mm for parenchyma, xylem, and phloem, respectively. The chemical composition of Sida hermaphrodita together with its morphological characteristics make this raw material suitable for a production of papers intended for printing, writing and tissue.

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Cohen, Jeffrey H. "Traditional Papermaking and Paper Cult Figures of Mexico:Traditional Papermaklng and Paper Cult Figures of Mexico." Latin American Anthropology Review 1, no. 1 (March 1989): 11–12. http://dx.doi.org/10.1525/jlat.1989.1.1.11.2.

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Zhao, Li Juan, Yong Feng Zhang, Jian Feng Hong, and Wei Wei Tu. "Papermaking Wastewater Treatment - A Brief Review." Advanced Materials Research 926-930 (May 2014): 4276–79. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.4276.

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Papermaking industry generates a considerable amount of wastewater including varieties of pollutants. This paper reviews the ordinary processes of treating papermaking wastewater, and introduces the merits and demerits of these processes. The latest technologies are summed up. A forecast is made through all the methods in recent years. The waste to waste process is particularly promising because of its remarkable economic and environmental benefits.

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Wang, Yongsheng, Haiyan Huo, Xueren Qian, and Jing Shen. "Colloids, nanostructures, and supramolecular assemblies for papermaking." BioResources 15, no. 3 (May 1, 2020): 4646–49. http://dx.doi.org/10.15376/biores.15.3.4646-4649.

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The dominating role of colloid science in papermaking processes, as exemplified by wet-end chemistry, is now well known. The concept of colloids dates back to about 160 years ago. In certain cases, however, the term “colloids” can have an overlapping meaning with the modern terms “nanomaterials” and “supramolecular assemblies”. The latter terms, and the scientists who have gravitated to those terms, have enriched colloid science, providing new insights into colloidal systems. It is proposed here that reconsidering papermaking in light of these multi-disciplinary sciences has potential to facilitate effective teaching and learning pertaining to universities that have pulp and paper programs. Enhanced integration of basic sciences with papermaking may further our understanding and broaden existing research areas, which is likely to create breakthroughs in basic research, applied research, and product development.

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Hao, Gui Xia, Zhan Rou Zhong, and Wei Ming Liao. "Influence of Reaction Pressure on Papermaking Black Liquor Treatment with Wet Oxidation Method." Applied Mechanics and Materials 260-261 (December 2012): 1109–14. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.1109.

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The papermaking black liquor of one Paper Mill in ChaoZhou, GuangDong Province was treated with the wet oxidation method and the influence on treatment effect with the reaction pressure was researched. Experimental results showed that the papermaking black liquor was treated by the wet oxidation method; the treatment effect was showed upward trend with the increase of the reaction pressure, and the reaction pressure of 3.5 MPa is appropriate. The papermaking black liquor was treated by the wet oxidation method, the influent pH about 8.00 showing weakly alkaline basically. The decolorization removal and turbidity removal first increases and then slightly decreases basically with the increase of reaction time.When the reaction time is 60 min, the treatment effect is overall best. The decolorization removal can reach 61.1 % and the turbidity removal can reach 73.8 %.

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Journal articles on the topic 'Papermaking'

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