Disposal of acid-bearing and acid-generating sludges in the fertilizer manufacturing industry

1987 ◽  
Vol 14 (1) ◽  
pp. 1-6
Author(s):  
Adrian Smith
Keyword(s):  
Water Pollution ◽  
Manufacturing Industry ◽  
Calcium Sulphate ◽  
Pollution Potential ◽  
Waste Products ◽  
Chemical Attack ◽  
Tailings Impoundment ◽  
Similarities And Differences ◽  
Acid Sludge ◽  
The Impact

Major waste products from fertilizer manufacture are calcine and so-called phosphogypsum, calcium sulphate. The oxidation and leaching of calcine produces a liquid with a high acidity and hence is acid generating. Disposal of phosphogypsum, an acid-bearing waste, is normally effected by construction of a tailings impoundment, similar in nature to those utilized for tailings disposal in the mining industry.This paper addresses the general chemistry, pollution potential, and chemical attack potential of both calcine and phosphogypsum and the impact these have on their disposal. The similarities and differences in the design philosophy for acid-bearing and acid-generating waste facilities are then discussed. Key words: phosphogypsum, acid sludge, fertilizer manufacture, water pollution, waste disposal, calcine, sulphuric acid manufacture.

A Study on the Impact of Family-friendly Certification on Financial Performance of SMEs: Focusing on the Manufacturing Industry

2019 ◽  
Vol 118 (2) ◽  
pp. 7-12
Author(s):  
Ok-Hee Park ◽  
Kwan-sik Na ◽  
Seok-Kee Lee
Keyword(s):  
Financial Performance ◽  
Family Life ◽  
Manufacturing Industry ◽  
Work And Family ◽  
Family Friendly ◽  
The Future ◽  
The Impact

Background/Objectives: The purpose of the paper is to examine how family-friendly certificates introduced to pursue the compatibility of work and family life affect the financial performance of small and medium-sized manufacturers, and to provide useful information to companies considering the introduction of this system in the future.

Interpreting Revelation through African American Cultural Studies

2020 ◽  
pp. 482-498
Author(s):  
Thomas B. Slater
Keyword(s):  
African American ◽  
Cultural Studies ◽  
Identity Construction ◽  
Social History ◽  
Liberation Theology ◽  
Biblical Interpretation ◽  
Resistance Literature ◽  
Political Perspective ◽  
Similarities And Differences ◽  
The Impact

African American scholarship on Revelation makes fruitful use of cultural studies as a discipline. This approach draws on the field of sociology, social history, literature, anthropology, linguistics, and other cultural markers. As a method for biblical interpretation it values both the ancient context and the current cultural contexts of readers, and is open to multiple interpretations. This essay considers the various ways Revelation has functioned in African American congregations, the impact of Liberation theology, womanist and postcolonial perspectives, and the notion that Revelation is subversive or resistance literature. Attention is given to similarities and differences between African American scholars concerning Revelation’s political perspective, its approach to identity construction, and the way in which the book might engage current readers.

scholarly journals Association of temporary Environmental Protection Agency regulation suspension with industrial economic viability and local air quality in California, United States

2021 ◽  
Vol 33 (1) ◽  
Author(s):  
Emily Chang ◽  
Kenneth Zhang ◽  
Margaret Paczkowski ◽  
Sara Kohler ◽  
Marco Ribeiro
Keyword(s):  
United States ◽  
Air Quality ◽  
Environmental Protection ◽  
Environmental Protection Agency ◽  
Manufacturing Industry ◽  
Economic Viability ◽  
Treatment Control ◽  
Oil Refineries ◽  
Pollution Levels ◽  
The Impact

Abstract Background This study seeks to answer two questions about the impacts of the 2020 Environmental Protection Agency’s enforcement regulation rollbacks: is this suspension bolstering the economic viability of industries as oil and manufacturing executives claim they will and are these regulations upholding the agency’s mission of protecting the environment? Results To answer the former question, we utilized 6 months of state employment level data from California, United States, as a method of gauging the economic health of agency-regulated industries. We implemented a machine learning model to predict weekly employment data and a t-test to indicate any significant changes in employment. We found that, following California's state-issued stay-at-home order and the agency’s regulation suspension, oil and certain manufacturing industries had statistically significant lower employment values. To answer the latter question, we used 10 years of PM2.5 levels in California, United States, as a metric for local air quality and treatment–control county pairs to isolate the impact of regulation rollbacks from the impacts of the state lockdown. Using the agency’s data, we performed a t-test to determine whether treatment–control county pairs experienced a significant change in PM2.5 levels. Even with the statewide lockdown—a measure we hypothesized would correlate with decreased mobility and pollution levels—in place, counties with oil refineries experienced the same air pollution levels when compared to historical data averaged from the years 2009 to 2019. Conclusions In contrast to the expectation that the suspension would improve the financial health of the oil and manufacturing industry, we can conclude that these industries are not witnessing economic growth with the suspension and state shutdown in place. Additionally, counties with oil refineries could be taking advantage of these rollbacks to continue emitting the same amount of PM2.5, in spite of state lockdowns. For these reasons, we ask international policymakers to reconsider the suspension of enforcement regulations as these actions do not fulfill their initial expectations. We recommend the creation and maintenance of pollution control and prevention programs that develop emission baselines, mandate the construction of pollution databases, and update records of pollution emissions.

scholarly journals The Role of Internal Control in Firms’ Coping with the Impact of the COVID-19 Pandemic: Evidence from China

2021 ◽  
Vol 13 (11) ◽  
pp. 6294
Author(s):  
Peiqing Zhu ◽  
Jianbo Song
Keyword(s):  
Internal Control ◽  
Manufacturing Industry ◽  
Firm Heterogeneity ◽  
Negative Impact ◽  
Risk Prevention ◽  
High Tech ◽  
Obvious Effect ◽  
The Difference ◽  
The Impact

Internal control plays a role in risk prevention for firms when dealing with serious emergencies, which ensures the sustainable development of firms during a crisis. Based on the rapid outbreak of COVID-19 in China, this paper empirically tests whether internal control alleviates the negative impact of the pandemic on firm performance. Using a sample of Chinese listed firms from the first quarter of 2019 to the third quarter of 2020 and employing the difference-in-difference (DID) method, we find that the firms with a higher quality of internal control achieve better financial performance during the pandemic period; the more serious the pandemic is, the more obvious effect internal control plays. Furthermore, we consider the industry heterogeneity and firm heterogeneity of the risk resistance effect of internal control. In the manufacturing industry, which is a “disaster zone” of the pandemic, and the non-high-tech industry with a low degree of digitization, internal control can play a more important role in firms’ performance. Moreover, for state-owned enterprises, and firms with strong financing constraints, the role of internal control is more prominent. The above results provide empirical evidence for the risk prevention function of internal control and shed new light on the measures for firms to resist emergencies in the future.

Does investment in innovation impact firm performance in emerging economies? An empirical investigation of the Indian food and agricultural manufacturing industry

2021 ◽  
Vol 13 (2) ◽  
pp. 233-248
Author(s):  
Manogna R.L. ◽  
Aswini Kumar Mishra
Keyword(s):  
Firm Performance ◽  
Manufacturing Industry ◽  
Emerging Market ◽  
Developed Countries ◽  
Emerging Economy ◽  
Content Type ◽  
Agricultural Industry ◽  
Indian Food ◽  
The Impact ◽  
The Relationship

Purpose The study aims to analyze the impact of Research & Development (R&D) intensity on the firm’s performance, measured by growth of sales in the emerging market like India. Innovation strategy and its outcomes for firms may be different in developing countries as compared to developed countries. Thus, a study that focuses on the emerging economy like India, with a majority of the population dependent on agriculture, is of prime importance to the firm performance in the food and agricultural manufacturing industry. For this study, the broader focus will be on one widely recognised factor which may influence the growth rate of firms, i.e. investment in innovations which is in terms of R&D expenditure. Design/methodology/approach The paper investigates the relationship between the R&D efforts and growth of firms in the Indian food and agricultural manufacturing industry during 2001–2019. To empirically test the relationship between firm’s growth (FG) and R&D investments, system generalised method of moments technique has been used, hence enabling to avoid problems related to endogeneity and simultaneity. Findings The findings reveal that investments in innovations have a positive effect on the growth of firms in the Indian food and agricultural manufacturing industry. Investment in R&D also enables the firms to reap benefits from externalities present in the industry. Further analysis reveals that younger firms grow faster when they invest in R&D. More specifically, this paper finds evidence in the case of the food and agricultural industry that import of raw materials negatively affects the FG and export intensity positively affects the growth in the case of R&D firms. Research limitations/implications This study suggests that the government should encourage the industries to invest optimally in R&D projects by providing favourable fiscal treatments and R&D subsidies which are observed to have positive effects in various developed countries. Originality/value To the best of the author’s knowledge, the current paper is the first to analyse the impact of innovation in food and agricultural industry on firm’s performance in an emerging economy context with the latest data. This paper agrees that a government initiative to increase private R&D expenditure would have favourable effects on FG as growing investments in R&D lead to further growth of the firms.

PROJECT MANAGEMENT IN THE TRANSITION TO A CIRCULAR ECONOMY

2021 ◽  
pp. 21-26
Author(s):  
Sergey Bushuyev ◽  
Denis Bushuiev ◽  
Victoria Bushuieva ◽  
Olena Verenych
Keyword(s):  
Project Management ◽  
Best Practices ◽  
Organizational Development ◽  
Circular Economy ◽  
Cost Effective ◽  
Life Cycles ◽  
Development Projects ◽  
Waste Products ◽  
The World ◽  
The Impact

The problem of creating effective models, methods and tools for strategic management of projects and programs for the development of organizations in the transition to a circular economy. Global trends in the development of organizations prove that the world is transforming with acceleration. The life cycle of knowledge and technologies for managing complex projects and programs is significantly reduced. The technical and technological complexity of organizational development projects increases due to innovations. These trends create significant challenges in the development of project management systems and programs for the formation of a circular economy in Ukraine. This is especially true of projects and programs in conditions of uncertainty about the impact of COVID 19 and anticipation of a global crisis after a pandemic. Today, the application of proven best practices (benchmarking) is no longer a way forward. Forming a vision, goals and strategy for the implementation of organizational development projects in advance makes our actions rigid, not flexible. When creating a project or program begins with focusing on what is valuable to our customers and the country, it is enough for us to use best practices. But the complexity and innovative orientation of development projects of organizations in the transition to a circular economy creates a number of challenges. One of the answers to these challenges is cost-effective work on project management and development programs, taking into account the trends of transition to a circular economy. Project management teams learn to distinguish between what is valuable and what doesn't matter, this is the path that management methodologies have taken for decades. A number of projects have taken the first steps in implementing the necessary cost-effective / flexible transition that supports sustainability and adaptability to turbulent environmental changes. In the conditions of modern destructive economic relations in the world community the problem of a choice of strategy of projects as drivers of development of the organizations is vital. One of the key approaches to the development of the EU is the transition to a circular economy with maximum utilization of both waste products and projects, and the disposal of project products after the end of product life cycles.

Differences in the impact of AMO bundles of line managers and frontline workers on the performance of manufacturing firms

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Alberto Bayo-Moriones ◽  
Alejandro Bello-Pindado
Keyword(s):  
Manufacturing Industry ◽  
Manufacturing Firms ◽  
Manufacturing Companies ◽  
Linear Regression Models ◽  
Line Managers ◽  
Content Type ◽  
Frontline Workers ◽  
Hrm Practices ◽  
Manufacturing Performance ◽  
The Impact

PurposeThe purpose of this paper is to analyse the impact on manufacturing performance of human resource management (HRM) practices across two job levels within manufacturing firms in Argentina and Uruguay: that of line managers and frontline workers. HRM practices are categorised into three bundles defined by the AMO theoretical framework: ability, motivation and opportunity.Design/methodology/approachThe article uses data from a survey to 301 manufacturing plants in Uruguay and Argentina. Given the characteristics of the dependent variable, linear regression models have been estimated in order to test the hypotheses.FindingsThe results show that the ability and opportunity bundles for line managers are positively associated with manufacturing performance. However, only the motivation bundle affects manufacturing performance for frontline workers.Research limitations/implicationsThe main limitations are the use of cross-sectional data, the focus on two specific countries and the analysis of two employee categories that are not completely homogenous. The paper extends the contingency perspective in HRM by examining the relevance of job level as a contingent factor in the HRM-performance relationship in the manufacturing industry.Practical implicationsThe results suggest that manufacturing companies should target HR investments more towards line managers than to frontline employees. More specifically, they should concentrate efforts on the ability and opportunity bundles.Originality/valueThe article contributes to the very limited empirical evidence on the impact of HRM differentiation on firm performance by analysing sub-dimensions in a context not previously analysed.

Pulp mill process closure: a review of global technology developments and mill experiences in the 1990s

2004 ◽  
Vol 50 (3) ◽  
pp. 183-194 ◽  
Author(s):  
S.C. Stratton ◽  
P.L. Gleadow ◽  
A.P. Johnson
Keyword(s):  
Manufacturing Industry ◽  
Pollution Prevention ◽  
Optimal Solution ◽  
Pulp Mill ◽  
Thermomechanical Pulp ◽  
Pulp Mills ◽  
Oxygen Delignification ◽  
Manufacturing Operations ◽  
The Impact ◽  
Mill Process

The impact of effluent discharges continues to be an important issue for the pulp manufacturing industry. Considerable progress has been made in pollution prevention to minimize waste generation, so-called manufacturing “process closure.” Since the mid-1980s many important technologies have been developed and implemented, many of these in response to organochlorine concerns. Zero effluent operation is now a reality for a few bleached chemi-thermomechanical pulp (BCTMP) pulp mills. In kraft pulp manufacturing, important developments include widespread adoption of new cooking techniques, oxygen delignification, closed screening, improved process control, new bleaching methods, and systems that minimize pulping liquor losses. Coupled to this is a commitment to reduce water use and maximize reuse of in-mill process streams. Some companies pursued bleach plant closure, and many have been successful in eliminating a portion of their bleaching wastewaters. However, the difficulties inherent in closing bleach plants are considerable. For many mills the optimal solution has been found to be a high degree of closure coupled with external biological treatment of the remaining process effluent. No bleach plants at papergrade bleached kraft mills are known to be operating effluent-free on a continuous basis. This paper reviews the important worldwide technological developments and mill experiences in the 1990s that were focused on minimizing environmental impacts of pulp manufacturing operations.

scholarly journals A New Ex Vivo Model to Evaluate the Hair Protective Effect of a Biomimetic Exopolysaccharide against Water Pollution

Cosmetics ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 78
Author(s):  
Claire Tubia ◽  
Alfonso Fernández-Botello ◽  
Jan Dupont ◽  
Eni Gómez ◽  
Jérôme Desroches ◽  
...  
Keyword(s):  
Water Pollution ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Adverse Effects ◽  
Inductively Coupled Plasma ◽  
Ex Vivo ◽  
Polluted Water ◽  
Ex Vivo Model ◽  
Fiber Damage ◽  
The Impact

As an external appendage, hair is exposed to multiple stresses of different origins such as particles and gases in air, or heavy metals and chemicals in water. So far, little research has addressed the impact of water pollution on hair. The present study describes a new ex vivo model that allowed us to document the adverse effects of water pollutants on the structure of hair proteins, as well as the protective potential of active cosmetic ingredients derived from a biomimetic exopolysaccharide (EPS). The impact of water pollution was evaluated on hair from a Caucasian donor repeatedly immersed in heavy metal-containing water. Heavy metal retention in and on hair was then quantified using Inductively Coupled Plasma Spectrometry (ICP/MS). The adverse effects of heavy metals on the internal structure of hair and its prevention by the EPS were assessed through measurement of keratin birefringence. Notably, the method allows the monitoring of the organization of keratin fibers and therefore the initial change on it in order to modulate the global damage in the hair. Results revealed an increasing amount of lead, cadmium and copper, following multiple exposures to polluted water. In parallel, the structure of keratin was also altered with exposures. However, heavy metal-induced keratin fiber damage could be prevented in the presence of the tested EPS, avoiding more drastic hair problems, such as lack of shine, or decrease in strength, due to damage accumulation.

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