Swedish Pulp Research Articles

Chemical characterization of green liquor dregs from 16 Swedish pulp and paper mills between 2017 and 2019

Green liquor dregs (GLD) is an alkaline by-product from the pulp and paper industry with a pH between 10 and 14. Today most of the produced GLD in Sweden is landfilled. As a fine-grained alkaline material, it might be possible to use it for acid-generating mining waste remediation. To increase the utilization, quality characteristics and environmental performance need to be determined. In this study samples were collected 5 times from 16 mills during a period of 2.5 years, and were characterized by analyzing dry matter content, loss on ignition (LOI) 550 °C and LOI 950 °C, elemental analysis, pH, electrical conductivity, and calorific value. The results were then evaluated using multivariate statistics (PCA) as well as being compared to other studies and Swedish till. The results show that even if GLD is heterogenous (both within a mill and between different mills) trends can be seen for samples from most mills. When samples do stand out, it is predominately related to the same four mills. Most of the studied parameters showed characteristics favorable for use as a remediant; however, TOC, sulfur, and some of the elements require further study. In general, this study concludes that GLD can be a viable option for the remediation of small orphaned sulfidic mining sites and thus worthy of further studies on the interaction between GLD and acidic mining waste.Overall, GLD can be a good alternative for cost-effective remediation of smaller orphaned mining sites. It is readily available in large quantities, has the qualities needed for remediation of many orphaned acidic mining sites, and can often be locally sourced near the mining site. The use of GLD for mining site remediation is likely also a more sustainable method compared to traditional remediation methods.

Industry restructuring and environmental performance – Decomposing the drivers of water pollution reduction in the Swedish pulp and paper industry, 1969-1989

This paper analyses the reduction of biochemical oxygen demand (BOD) emissions in the Swedish pulp and paper industry between 1969-1989. To that end, I have constructed pollution records for a large sample of Swedish chemical pulp producers and decomposed the observed changes in BOD emissions into (i) scale, (ii) technique, (iii) composition, and (iv) plant entry and (v) plant exit effects. In contrast to previous decomposition analyses of industrial pollution reduction, which have mainly emphasised the technique effect and/or compositional changes across surviving plants, this study finds that the majority of the pollution reduction was due to the exit of numerous (predominantly emission-intensive sulfite) plants, in combination with a continuous reallocation of production from such plants towards the surviving (predominantly sulfate) plants. The divergence in results can be attributed to the industry’s market structure, which is an important factor to consider when assessing the potential for successful pollution reduction.

Using Fish as a Sentinel in Risk Management of Contaminated Sediments

Sediments polluted by historical emissions from anthropogenic point sources are common in industrialized parts of the world and pose a potential threat to the function of aquatic ecosystems. Gradient studies using fish as a bioindicator are an option to assess the ecological impact of locally polluted areas. This study investigates the remaining effects of historical emissions on sediments outside ten Swedish pulp and paper mills using perch (Perca fluviatilis). The aim has been to obtain a general picture of the impact area of local deposits of cellulose fiber-rich sediments containing elevated levels of trace metals, e.g., Hg, and organochlorines, e.g., dioxins. In addition to analyzing contaminant levels in muscle and liver tissue, morphological measures in the fish that constitute biomarkers for health and reproductivity were measured. Another aim was to augment existing historical data sets to observe possible signs of environmental recovery. Overall, the results indicate only a minor elevation in contaminant levels and a minor impact on the fish health status in the polluted areas, which in several cases is an improvement from historical conditions. However, exceptions exist. Differences in the ecosystems' responses to pollution loads are primarily explained by abiotic factors such as water turnover rate, bottom dynamic conditions, and water chemistry. Weaknesses in the sampling methodology and processing of data were identified. After minor modifications, the applied survey strategy has the potential to be a management tool for decision-makers working on the remediation of contaminated areas.

Large-Scale Implementation of Bioenergy With Carbon Capture and Storage in the Swedish Pulp and Paper Industry Involving Biomass Supply at the Regional Level

Bioenergy with carbon capture and storage (BECCS) has been identified as a possible major contributor to efforts to reach ambitious climate targets through the provision of negative emissions–offsetting residual fossil emissions in “hard-to-abate” sectors and accomplishing net-negative emissions. The pulp and paper industry is the single largest consumer of biomass in Sweden, with many large point sources of biogenic CO2 emissions that could be captured. This work investigates the biomass supply required for large-scale implementation of BECCS in the pulp and paper industry. Logging residues are considered as a fuel to supply the additional energy demand imposed by the capture plant, and the potential of these residues is evaluated in a case study that includes four pulp and paper mills located in regions of Sweden with different conditions for biomass supply. Two of the mills are located in southern Sweden, where there is strong competition for logging residues from the heating sector, and two of the mills are located in northern Sweden, where the competition is weaker. We show that implementing carbon capture at the four pulp and paper mills using regional logging residues to supply the additional heat demand required by the capture process (the reboiler heat demand) has the potential to capture around 4.6 Mt CO2/year. The results also show that the fuel share of the capture cost, i.e., the cost to supply the reboiler heat demand with regional logging residues, is 22–30 €/tCO2 captured, where the lower value corresponds to regions with weaker competition for logging residues (in this study, northern Sweden). In regions that have competition for logging residues, the possibility to increase the regional supply of logging residues to fuel the capture process while maintaining mill production output is limited, which in turn limits the possibilities to generate negative emissions via BECCS. In contrast, in regions with a low level of competition and strong availability of logging residues, there is an additional potential for logging residues to cover the additional heat demand required for CCS implementation.

Transformation in a mature industry: The role of business and innovation strategies

This paper investigates how business and innovation strategies explain companies' responses to transformational pressures in a mature industry. The analytical framework combines two perspectives on business and innovation strategies: competitive position and resource position. Based on an embedded case study of eight companies in the Swedish pulp and paper industry, the paper contributes to previous innovation literature by connecting companies' innovation responses to their business and innovation strategies. Most notably, it reveals a new type of ambidextrous innovation strategy, i.e. “market-driven exploitation”, and shows that the responses by incumbent companies in the pulp and paper industry are the result of deliberate and justifiable strategic choices rather than path dependency and inertia. The study also confirms the value of integrating the two perspectives on strategy. On the one hand, the explanations provided by each perspective overlap with the other, so that they together provide a more nuanced understanding of the companies’ choices and activities. On the other hand, the perspectives complement each other, so that one perspective explains observations that cannot be explained by the other. The results of the paper inform both managers and policy makers about the trade-offs involved in changing a strategic direction while retaining core capabilities.

Industrial Energy Transitions and the Dynamics of Innovation Systems: The Swedish Pulp and Paper Industry, 1970–2010

This article provides a sectoral innovation system perspective of the development of energy efficient and clean process technologies in the Swedish pulp and paper industry. Specifically, the analysis elaborates the importance of knowledge development, actor networks, and institutions (including policy) for progressing and diffusing novel technologies related to energy use. The empirical analysis also sheds light on how significant changes in the sectoral innovation system have influenced the relevant research, development and demonstration activities in the Swedish pulp and paper industry over the period 1970–2010. The results are based on various sources—e.g., industry magazines, reports from industrial consultants and associations, minutes from meetings—and illustrate the importance of well-functioning innovation systems for successful technological development and diffusion processes. They display, in particular, the importance of joint, industry-wide R&D activities, trust-based state—industry relationships, government R&D expenditures, and intense information sharing. One important implication is that the role of policy stretches beyond the funding of basic R&D. Policy also involves measures that strengthen existing actor networks, build competence, and secure the existence of research institutes that provide a bridge between basic knowledge generation (at the universities) on the one hand, and industrial application on the other.

Trail-Blazer Dependency – A Roadmap for the Sustainability Revolution

Abstract While geologists are still considering whether the Anthropocene should be accepted as a formal geological epoch, it is up to us humanists to search for ways making this human era a good one. In this article, I will examine how we can use historical research to provide such tracks based on past regularities or similarities. Positive success stories from the past can at least provide faith that we can do something about our current environmental problems. This investigation is based on two case studies: the Tesla Model S electric car, and the Swedish pulp and paper industry’s transition to chlorine-free bleaching. It argues that the sustainability revolution doesn’t just share similarities with the quality movement of the 1970s and 1980s, but is essentially a continuation of it. In concordance with previous megatrends, the major benefit of the sustainability revolution will be reaped by countries and companies running ahead of the curve. A new term, ‘trail-blazer dependency’ is introduced; by setting an example, the first-movers are opening a trail for late-comers to follow.

Utilization of fly ash and waste lime from pulp and paper mills in the Argon Oxygen Decarburization process

Fly ash and waste lime are solid wastes generated in pulp and paper mills. Due to high CaO contents, these secondary lime materials can be potentially utilized in the steelmaking process to partially replace primary lime. In this study, fly ash and waste lime from Swedish pulp and paper mills were made into briquettes and for the first time utilized as slag formers to replace primary lime in a pilot-scale Argon Oxygen Decarburization (AOD) stainless steelmaking process. The purpose was to evaluate how these CaO-containing materials could affect the AOD process and the steel quality. The results show that the S, P and CaO contents in the fly ash and waste lime are important concerns for metallurgical application. Firstly, due to lower CaO contents (61.5% CaO in fly ash and 90.6% CaO in waste lime versus 95.2% CaO in primary lime), utilization of these secondary lime materials could lead to higher slag amounts in the AOD converter. Secondly, due to higher S and P contents (0.40% S and 0.26% P2O5 in fly ash, 0.11% S and 0.75% P2O5 in waste lime versus 0.08% S and 0.01% P2O5 in primary lime), utilization of these secondary lime materials could increase the S and P contents in the steel. The S content in the steel can be controlled during the reduction and desulfurization stages; however, the P content in the steel increases with an increased use of these secondary lime materials. Thirdly, the metallurgical performance of fly ash and waste lime is as good as primary lime when considering the aspects that: (a) utilization of fly ash and waste lime doesn’t have negative effects on the decarburization stage nor on the reduction stage during the AOD process; and (b) fly ash and waste lime are as efficient desulfurization agents as primary lime. In future industrial applications, the alkali content and the variations of chemical compositions (especially with respect to S, P and CaO) of these secondary lime materials need to be carefully controlled to ensure a sound metallurgical operation.

Brønsted and Lewis acid catalyzed conversion of pulp industry waste biomass to levulinic acid

Enormous amounts of fiber sludge are generated annually by the pulp industry as a by-product. As a cellulose-rich material, its current usage, mainly as fuel, is inefficient from a material efficiency point of view. This work studied the utilization of fiber sludge from a Finnish and a Swedish pulp mill as a potential feedstock to produce levulinic acid, a valuable platform chemical. The conversion experiments of fiber sludge to levulinic acid were performed in a microwave reactor with a mixture of H2SO4 and Lewis acid as the catalyst. The reaction conditions, which included reaction time and temperature as well as the H2SO4 and Lewis acid concentrations, were studied in detail. The highest levulinic acid yield, 56%, was obtained with Swedish fiber sludge after 60 min at 180 °C with the H2SO4 concentration of 0.3 mol/L and a CrCl3 concentration of 7.5 mmol/L which indicated that the fiber sludge had the potential to be used as feedstock for levulinic acid production.

Natural Capital Statements: a case study on SCA, a Swedish paper and pulp company

ABSTRACTCompanies and investors have an important role to play in preventing further degradation of the natural environment and supporting its improvements. This requires decision-useful, readily available corporate reporting and investment analysis on environmental impacts and dependencies. There are pressures on providing such information, driven by movements within climate change reporting, uptake of the UN Sustainable Development Goals and increasing expectation for more transparency in reporting and analysis. Although sustainability reporting and environmental social and governance (ESG) analysis are evolving, they are not deemed ‘fit for purpose’ to meet all the changes currently on the horizon. eftec developed the Natural Capital Statements to fill this gap. The ‘NatCapStatementsTM’ are a combination of the income statement and balance sheet for natural capital assets, mostly using the data already being collected by companies and analysts. Based on the relatable structure of traditional financial accounts, the NatCapStatementsTM report (i) the impacts of a company on natural capital; (ii) how dependent a company is on natural capital and (iii) whether the company is prepared for future risks and opportunities from the environment. To demonstrate this approach, this article presents an independent assessment of the NatCapStatementsTM of Swedish paper and pulp company SCA.

Key performance indicators for energy management in the Swedish pulp and paper industry

The pulp and paper industry is one of the five most energy-intensive industries world-wide. In Sweden, most pulp and paper mills were certified with a standardized energy management system already in 2005. As Swedish mills have more than a decade of experience with energy management systems and energy key performance indicators (KPIs), studying KPIs within Swedish pulp and paper mills will enable both a state-of-the-art positioning of best-practice in relation to energy KPIs in pulp and paper mills, but also spot potential barriers and drivers in the utilization of energy KPIs.This paper studies the current level of implementation and operationalization of energy-related KPIs in the Swedish pulp and paper industry. The results show a potential for improvement.

Drivers, barriers and success factors for energy management in the Swedish pulp and paper industry

Research has revealed the existence of an energy-efficiency gap – the difference between optimal and actual energy end-use, suggesting that energy efficiency can be improved. Energy management (EnM) is a means for improving industrial energy efficiency. However, due to various barriers, the full potential of EnM is not realised. Several studies have addressed drivers and barriers to energy efficiency but few to EnM. This study aims to identify EnM practices, the most important perceived drivers and barriers for EnM, and relations among them in the energy-intensive Swedish pulp and paper industry (PPI), which has the longest experience internationally of practising EnM systems, and has worked according to the standards since 2004. Our results show that, altogether, the PPI works regularly and continuously with EnM, with a clear division of responsibilities. The highest maturity for EnM practices was for energy policy, followed by organization, investments, and performance measurement. The study also shows that communication between middle management and operations personnel has potential for improvement. The most important categories of drivers were economic, whereas for barriers they were organizational. Nevertheless, knowledge-related barriers and drivers were amongst the most important, suggesting that the absorptive capacity for energy issues could be improved.

Second wind for exploitation: Pursuing high degrees of product and process innovativeness in mature industries

This paper investigates to what extent and how an exploitation-oriented innovation logic can enable innovations characterised by a high degree of newness. The paper is based on an embedded case study of 11 innovation initiatives by the Swedish pulp and paper companies and uses a multi-dimensional framework that takes into account both product and process innovation dimensions as well as multiple stages in the value chain. The results show that the studied initiatives are characterised by new to the companies or new to the industry products and processes in the primary or final steps in the value chain (or both). It is also shown that such high degrees of novelty can be the result of an exploitation innovation logic, where novelty is enabled and facilitated by unchanged or slightly modified products and processes in other parts of the value chain. It can therefore be concluded that exploitation strategies can contribute to more than incremental innovation outcomes and, consequently, that mature industries hold considerably higher innovation potential than the previous literature assumes.

The innovation and performance effects of well-designed environmental regulation: evidence from Sweden

This paper provides novel empirical insights into the Porter hypothesis (PH) and its dynamic nature. The PH posits that well-designed environmental regulations induce eco-innovations at polluting firms that improve both their environmental and business performance via ‘innovation offsets.’ We conduct an econometric test of this proposition, using Swedish pulp and paper plants as empirical application. Swedish environmental regulation of polluting industries provides an interesting case because it has been praised, due to containing elements of ‘well-designed’ regulations, for being conducive to accomplishing the ‘win-win’ situation of mutual environmental and economic benefits. The empirical results indicate that flexible and dynamic command-and-control regulation and economic incentive instruments have induced innovation offsets through improved energy efficiency. Our study bears important implications: empirical tests of the PH that do not account for its dynamic nature, and that do not measure ‘well-designed’ regulations, might provide misleading conclusions as to its validity.

Effects of firm characteristics and energy management for improving energy efficiency in the pulp and paper industry

The Swedish pulp and paper industry (PPI) must increase energy efficiency to remain competitive on the global market, which has experienced entries from countries with cheaper energy and raw material supplies. Interactions among variables for energy use, production, energy management, electricity price and firm characteristics (FC), in different types of mills, i.e., pulp, paper and integrated mills, in Sweden from 2006 to 2015 indicate that correlations among the studied variables were different in different types of mills. This difference between types of mills seemed to originate partly from varying accessibility to production residue that could be used for energy. For all types of mills, variation of electricity prices did not correlate significantly with energy efficiency during the study period. The studied FC were firm's age, number of employees, number of companies in company group, net sales and profit for the year. Energy efficiency was more affected by the variables characterizing energy and production compared to the variables representing FC. This study also suggested presence of possible discrepancies between FC that were perceived as barriers to energy management towards energy efficiency, according to previous studies, and what was shown by the data combining variables representing energy use, production and FC.

The transition to chlorine free pulp revisited: Nordic heterogeneity in environmental regulation and R&D collaboration

The purpose of this paper is to analyze the development paths leading to the transition to cleaner bleaching technologies in the pulp industry. It devotes particular attention to the key features of the Swedish transition, but also compares this to the Finnish experiences. The empirical investigation builds on an analytical framework highlighting the conditions under which pollution regulations can provide efficient incentives for deep emission reductions at industrial plants. Existing and new archive material, including not least comprehensive license trial acts for Swedish pulp mills over an extended time period, are studied. Based on this historical analysis our findings contradict previous literature, the latter emphasizing that pressures from consumers and the public were the most significant driving forces behind the adoption of–and innovation in–alternative bleaching technologies during the late 1980s. Instead, this paper asserts, the green pulp transition was characterized by regulation-induced technological change and was made possible by long history of industry-wide cooperation in environmental R&D. Furthermore, while previous research has emphasized the leading role of the Nordic countries in green pulp innovation, we identify a number of profound differences between Finland and Sweden. These emerge from various national contexts in terms of, for instance, industry structures and strategies, political cultures, and regulatory styles. Finally, at a more general level the paper provides a few policy implications for supporting the ongoing transition towards a forest-based bioeconomy.

Chronic Eosinophilic Pneumonia in a Cardboard Factory Worker With Inadequate Response to Prednisone

SESSION TITLE: Student/Resident Case Report Poster - Occupational and Environmental Lung Diseases SESSION TYPE: Student/Resident Case Report Poster PRESENTED ON: Tuesday, October 25, 2016 at 01:30 PM - 02:30 PM INTRODUCTION: Occupation related exposures in paper and pulp factory workers have been implicated in chronic bronchitis, asthma, and general symptoms of breathlessness. Symptoms have been attributed to exposure to paper dust as well as non-organic chemicals. We describe a case of chronic eosinophilic pneumonia (CEP) in a patient with prolonged employment at a cardboard factory. CASE PRESENTATION: A 62 year old male with 25 year history of working in a cardboard factory presented with complaints of dyspnea, cough, malaise. He has been symptomatic for 20 years but was diagnosed with asthma and treated with albuterol with poor control and frequent recurrence. Exam revealed bilateral rales. Computer tomography (CT) of the chest showed extensive upper lobe pulmonary interstitial and alveolar lung disease. Bronchoalveolar lavage (BAL) showed intense eosinophilia (99%) and pathology exam of wedge resection of right middle lobe was consistent with CEP with features of organizing pneumonia. Prednisone 40mg daily was started but tapered to 20 mg over 6 months with continued employment. He began requiring oxygen at 3 L/min, received short term disability, and stopped working. 4 months later, a repeat CT showed stable ground glass opacities and increased interstitial markings. Spirometry revealed FEV1 49%, FVC 45%, and DLCO was 29% predicted. BAL demonstrated persistent yet improved eosinophilia (30%). DISCUSSION: Patients with CEP improve quickly with systemic steroids and exposure avoidance. Our patient had poor response to prednisone which could be attributed to his continued work-related exposure. We hypothesize that even after exposure cessation the additional pathology of organizing pneumonia likely contributed to poor steroid responsiveness. CONCLUSIONS: Our aim is to describe a case of refractory chronic eosinophilic pneumonia probably caused by prolonged non-organic chemical and paper dust exposures from working in a cardboard factory. Reference #1: Westberg H, Elihn K, Andersson E, Persson B, Andersson L, Bryngelsson IL, Karlsson C, Sjögren B. Inflammatory markers and exposure to airborne particles among workers in a Swedish pulp and paper mill. Int Arch Occup Environ Health. 2016 Feb 13. Reference #2: Arakawa H, Kurihara Y, Niimi H, Nakajima Y, Johkoh T, Nakamura H. Bronchiolitis obliterans with organizing pneumonia versus chronic eosinophilic pneumonia: high-resolution CT findings in 81 patients. AJR Am J Roentgenol. 2001 Apr;176(4):1053-8. Reference #3: Murgia N, Torén K, Kim JL, Andersson E. Risk factors for respiratory work disability in a cohort of pulp mill workers exposed to irritant gases. BMC Public Health. 2011 Sep 6;11:689. DISCLOSURE: The following authors have nothing to disclose: Kirill Lipatov, Tasnim Lat, Rachael Pattison, Darwin Ashbaker, Shekhar Ghamande No Product/Research Disclosure Information

Profits, dividends and industry restructuring: the Swedish paper and pulp industry between 1945 and 1977

ABSTRACTThis paper explores the role of profit distribution in the restructuring of the Swedish paper and pulp (P&P) industry between 1945 and 1977. In addressing this issue, we will draw on the life-cycle theory and market imperfection arguments to examine whether the less profitable firms shared more of their profits as dividends, or remained on the market longer by reinvesting the majority of the profits. Our study shows that an increasing share of the profits was distributed to owners over time, and thus less profit was reinvested in industrial renewal. We find that the observed general upward trend in dividends can be attributed to the decline in profit and firm legacy, as firms in the Swedish P&P industry kept dividends up while reducing reinvestment as their profit margins decreased over time. Our study shows that the market imperfections related to capital taxation and investment funds increased rather than decreased dividends.

Regulation versus deregulation. Policy divergence between Swedish forestry and the Swedish pulp and paper industry after the 1990s

This article reviews the divergence of environmental regulatory arrangements in the Swedish forestry sector in relation to the closely-linked Swedish pulp and paper industry. The study finds that while the Swedish forestry sector was deregulated in 1993, with decreased state intervention in forest management, the pulp and paper sector has remained controlled by strong national mandatory requirements which have been further strengthened by European Union Directives after the 1990s. We suggest that one reason for the persistent, strict mandatory regulation of the pulp and paper sector is that conflicting goals between environmental protection and production growth have been aligned through technological change, while such a strong alignment of conflicting interests has not been possible to achieve in the forestry sector. Thus, policy divergence between the forestry and the pulp and paper industries may be explained by the success of established regulatory paths in the case of the pulp and paper industry, while in forestry deregulation has instead been used to, at least formally, increase focus on protection of the environment while maintaining a high level of productivity. Further studies in other sectors and countries will be necessary to clarify the specific role of, for example, discourses of deregulation and concepts of competitive advantage concerning e.g. particular actor's roles in specific elements of regulative change.

Internalising external environmental effects in efficiency analysis: The Swedish pulp and paper industry 2000–2007

This paper investigates the efficiency in the Swedish pulp and paper industry using national account data. By using a directional distance function approach we are able to investigate different aspects of efficiency relating to the direction of scaling. In the first analysis, desired output (pulp and paper) and undesired output (pollution) are considered equally important. This analysis shows that there is a 12% potential to simultaneously reduce pollution and increase the production of pulp and paper. In the second analysis, only undesired output is considered. The analysis shows an average potential reduction in pollution of 22%. If, on the other hand, this potential is computed in terms of desired output, keeping undesired output constant, the average potential increase in desired output is 14%. In a fourth analysis we discuss the potential to evaluate the costs of environmental regulations using the DEA methodology. Finally, our paper demonstrates that data from national accounts can be used to investigate different aspects of environmental efficiency.