Pulp And Paper
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2021 ◽  
Vol 44 ◽  
pp. 102330
Author(s):  
Akbar Eslami ◽  
Mohammad Reza Khavari Kashani ◽  
Ahmad Khodadadi ◽  
Gamze Varank ◽  
Abudukeremu Kadier ◽  
...  

2021 ◽  
Vol 3 ◽  
Author(s):  
Elin Svensson ◽  
Holger Wiertzema ◽  
Simon Harvey

The pulp and paper industry has a high potential to contribute to negative emissions through carbon capture and storage (CCS) applied to existing processes. However, there is a need to investigate how CCS solutions also can be combined with implementation of other emerging technologies in pulp and paper mills. This paper investigates the integration of a novel calcination process in two kraft mills and evaluates its potential combination with capture and storage of CO2 from the calcination plant. The alternative calcination process uses electric gas-plasma technology combined with steam slaking and allows replacing the conventional fuel-driven lime kilns with a process driven by electricity. The novel calcination process generates a pure, biogenic, CO2 stream, which provides an opportunity to achieve negative emissions at relatively lower costs. The potential reduction of greenhouse gas emissions when replacing the lime kiln with the plasma calcination concept depends strongly on the emissions intensity of grid electricity, and on whether fossil fuel or biomass was used as a fuel in the lime kiln. If fossil fuel is replaced and electricity is associated with very low emissions, avoided CO2 emissions reach ~50 kt/a for the smaller mill investigated in the paper (ca 400 kt pulp per year) and almost 100 kt/a for the larger mill (ca 700 kt pulp per year). Further emission reductions could then be achieved through CCS from the electrified calcination process, with capture potentials for the two mills of 95 and 164 kt/a, respectively, and capture and storage costs estimated to 36–60 EUR/tCO2.


2021 ◽  
Vol 5 (47) ◽  
pp. 11-11
Author(s):  
Alexander Saakian ◽  
◽  

This paper presents the results of a study of changes in the heavy metals content of soils of Karelia (podzolic loamy and peats high moor). Waste from wood processing, pulp and paper industry was added to the soils as organic additives using sodium lignosulfonate as an example. The results showed that no correlation with the additive dose was found in the series of total (Fe, Mn, Cu, Zn, Ti, Al, Ni, Co, Cr, Cd, Mo) and available forms of metals (Cu, Zn, Ti, Al, Ni, Co, Cr, Cd, Mo). Nevertheless, there is a positive correlation between the total and available forms of Pb and the available forms of Fe and Mn (r = 0.9), which can be explained by their initial content in the industrial plant material. It should be noted that the content of all forms of the studied metals did not exceed the requirements of sanitary-hygienic standards and geochemical background typical for soils in Karelia. Keywords: PODZOLIC LOAMY SOIL, PEATS HIGH MOOR SOIL, SODIUM LIGNOSULFONATE, HEAVY METALS


Author(s):  
Viktoriya Alikina ◽  
◽  
Elena Tipisova ◽  
Aleksandra Elfimova ◽  
◽  
...  

Introduction. Maintaining good health and working capacity of the population is one of the main tasks of the healthcare system. Living under adverse climatic conditions of the North and being exposed to dangerous production factors of the pulp and paper industry, strongly represented in the Arkhangelsk Region, can significantly reduce the adaptive capacity of the body. Major role in providing an adequate response to the action of irritators and initiating the adaptation process is played by the neuroendocrine, cardiovascular, and circulatory systems, which reflect qualitative and quantitative changes in the body while being reliable markers of homeostasis. The aim was to study the adaptive potential of workers showing the level of functioning of the circulatory system and to evaluate their endocrine profile depending on the revealed functional capabilities of the body. Materials and methods. The study involved 50 men aged 22–60 years working in the production departments of Solombala Pulp and Paper Mill (Arkhangelsk) with a body mass index of 19–25 and without earlier history of endocrine pathology. Serum levels of thyroxine-binding globulin and oestradiol were determined by means of radioimmunoassay, while serum concentrations of total cortisol, thyrotropin, thyroxine, triiodothyronine, progesterone, testosterone, insulin, C-peptide, and somatotropin were determined by enzyme-linked immunosorbent assay. Results. The research demonstrated that in 2/3 of the examined employees of the pulp and paper mill the adaptation mechanisms were under strain, while the condition of two subjects corresponded to the physiological norm, which is characterized by good and satisfactory adaptation. Workers with decreased adaptive capabilities to the point of unsatisfactory adaptation showed increased levels of cortisol, thyroxine-binding globulin, oestradiol, C-peptide, and insulin against the background of a decrease in testosterone, progesterone, and the testosterone/oestradiol ratio. The authors recommend conducting periodic medical examinations of pulp and paper workers, including endocrine profile assessment, and monitoring changes that occur over time.


2021 ◽  
Vol 26 (3) ◽  
pp. 66-74
Author(s):  
G. G. Mitrukova ◽  
◽  
L. L. Kapustina ◽  
E. A. Kurashov ◽  
◽  
...  

Introduction. The Shchuchiy Bay is located in the western part of the skerry area of Lake Ladoga near the town of Priozersk. For almost 20 years, the bay has experienced an anthropogenic impact from the ingress of untreated wastewater from the Priozersk Pulp and Paper Mill (PPM). Systematic microbiological studies of the Shchuchiy Bay ecosystem were started in the middle of the 1970s by the Institute of Limnology of the Russian Academy of Sciences and continued after the PPM closure in 1986. Materials and methods. The ecosystem of the bay was studied in detail during the growing season of 2013–2014; periodic studies were carried out in 2015–2018. Retrospective data were also used for the analysis. Water samples were taken at four stations from the surface horizon. The following microbiological indicators were determined: the abundance of bacterioplankton and the percentages of various morphological types of bacterial cells. Results and discussion. A comparison of the quantitative level of development of the bacterial community in the bay in different periods showed a gradual decrease in the abundance of bacterioplankton as the anthropogenic impact weakened after the closure of the Priozersky PPM from 12.40 million cells ml–1 in 1987 to an average value of 2.62±1.03 million cells ml–1 in 2013–2018. A positive correlation was found between the concentration of bacteria and water temperature. The percentage of rod-shaped microorganisms in the water of the bay also decreased as the anthropogenic impact weakened from 73.4 % in 1987 to 53.1±7.6 % in 2013–2018, which indicated an improvement in water quality. Conclusion. A stable decrease in the abundance of bacteria from the level characteristic of highly polluted and eutrophic water bodies to the level characteristic of mesotrophic and mesotrophic-eutrophic water bodies is a reliable criterion for the restoration of the ecosystem of the Shchuchiy Bay to the state characteristic of similar bays of Lake Ladoga.


Author(s):  
Guddu Kumar Gupta ◽  
Mandeep Dixit ◽  
Rajeev Kumar Kapoor ◽  
Pratyoosh Shukla

Author(s):  
Jane Adamma Chukwudebelu ◽  
Jonah Agunwamba

The pulp and paper industry is considered as one of the major potential sources of pollution in the environment and a consumer of wood. Environmental effects have been attributed to chemicals introduced during the manufacturing process. This paper investigated the influence of cooking chemicals, concentration and time on the properties of effluent generated during pulping of agricultural residue. A stem of kenaf which is an agricultural residue was pulped with 20%, 60% and 90% concentrations of formic acid and sodium hydroxide at 1 hour, 2 hours and 3 hours intervals to determine the characteristics of their effluents. The lowest Chemical Oxygen Demand (COD) obtained from formic acid effluent for the 3 hours cooking at 20%, 60% and 90% concentrations was 324mg/l at 60% concentration after cooking for 2 hours while sodium hydroxide effluent has 3050mg/l at 20% concentration after 1hour cooking as its lowest. Formic acid effluent showed lowest Biological Oxygen Demand (BOD) of 10.63mg/l at 60% concentration after cooking for 2 hours while sodium hydroxide has 13.75mg/l at 90% after 1 hour cooking. The value of Total Solid (TS) from formic acid effluent was lowest (16890mg/l) at 60% concentration after cooking for 2 hours while sodium hydroxide lowest value (15524mg/l) was recorded at 20% after 3 hours cooking. Sodium hydroxide effluent has lowest Total Suspended Solid (TSS) of 3165mg/l while formic acid has 2245mg/l both at 90% concentrations after 2 and 3 hours cooking.


2021 ◽  
Vol 13 (18) ◽  
pp. 10285
Author(s):  
Amaia Sopelana ◽  
Camille Auriault ◽  
Anurag Bansal ◽  
Karmen Fifer ◽  
Helena Paiva ◽  
...  

According to recent literature in the field of sustainability, the circular economy (CE) appears to be a thriving opportunity for creating new businesses, although less attention has been paid to the form in which its principles fit into a comprehensive framework that enables companies to design it in a practical way. This paper presents the methodology that has been adopted to pave the way to a coherent reference framework for circular business model innovation and its outstanding design and implementation, taking into consideration the entire value and supply chain. A unique analysis of recent innovations in circular economy models is provided herein, together with an exhaustive analysis of those elements that enable or hinder their implementation. The main interactions among all those critical elements influencing how organisations innovate and operate cooperatively within a CE ecosystem are also evaluated. In addition, a study of five industrial cases in the pulp and paper industry allowed searching for industrial insights and empirical evidence of the relevance of those elements, including observation, document analysis, and interviews. Lastly, the main outcomes of this research are illustrated using the CE reference framework designed when applied to the aforementioned industrial cases, and relevant insights into future improvements are also provided.


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