Mini-review of waste shell-derived materials’ applications

2020 ◽  
Vol 38 (5) ◽  
pp. 514-527 ◽  
Author(s):  
Abarasi Hart
Keyword(s):  
Environmental Sustainability ◽  
Scale Up ◽  
Blended Cement ◽  
Mineral Elements ◽  
Future Research ◽  
Carbonate Content ◽  
Concrete Aggregate ◽  
Manufacturing Cost ◽  
High Calcium ◽  
Waste Shell

This mini-review reports curbing waste shells (i.e. seashells, eggshells, snail shells, etc.), environmental health issues and liabilities by using them as material for heterogenous catalysts, blended cement manufacture, concrete aggregate, ceramics and plastics additives, biofilter medium and biomedical applications. The traditional materials used in the manufacture of these products could be relatively cheap; however, there are considerable environmental issues (i.e., ecological damage, disruption of eco-system and air contamination) as well as intense energy consumption associated with the exploitation of depleting natural resources. Waste shells are a renewable and cheap alternative, and will simultaneously decrease manufacturing cost while reducing their burden on the environment. This paper emphasizes environmental sustainability by summarizing articles published on various applications of waste shell-derived biomaterials. The properties of waste shell-derived biomaterials are presented and discussed. The materials’ properties suggest they are similar to limestone and their biological–natural origin and the high calcium carbonate content with a trace amount of other mineral elements makes them highly favorable for cement production, heterogenous catalysts and hydroxyapatite manufacture for biomedical and wastewater treatment applications. The purpose of this work is to offer new perspectives and direction for future research on waste shell-derived biomaterials while existing areas of applications demanding scale up are highlighted.

scholarly journals Cultivation and Biorefinery of Microalgae (Chlorella sp.) for Producing Biofuels and Other Byproducts: A Review

2021 ◽  
Vol 13 (23) ◽  
pp. 13480
Author(s):  
Chiu-Mei Kuo ◽  
Yu-Ling Sun ◽  
Cheng-Han Lin ◽  
Chao-Hsu Lin ◽  
Hsi-Tien Wu ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Co2 Fixation ◽  
Scale Up ◽  
Co2 Reduction ◽  
Feed Additives ◽  
Future Research ◽  
Microalgal Biomass ◽  
Microalgal Cultivation ◽  
Chlorella Sp ◽  
Co2 Biofixation

Microalgae-based carbon dioxide (CO2) biofixation and biorefinery are the most efficient methods of biological CO2 reduction and reutilization. The diversification and high-value byproducts of microalgal biomass, known as microalgae-based biorefinery, are considered the most promising platforms for the sustainable development of energy and the environment, in addition to the improvement and integration of microalgal cultivation, scale-up, harvest, and extraction technologies. In this review, the factors influencing CO2 biofixation by microalgae, including microalgal strains, flue gas, wastewater, light, pH, temperature, and microalgae cultivation systems are summarized. Moreover, the biorefinery of Chlorella biomass for producing biofuels and its byproducts, such as fine chemicals, feed additives, and high-value products, are also discussed. The technical and economic assessments (TEAs) and life cycle assessments (LCAs) are introduced to evaluate the sustainability of microalgae CO2 fixation technology. This review provides detailed insights on the adjusted factors of microalgal cultivation to establish sustainable biological CO2 fixation technology, and the diversified applications of microalgal biomass in biorefinery. The economic and environmental sustainability, and the limitations and needs of microalgal CO2 fixation, are discussed. Finally, future research directions are provided for CO2 reduction by microalgae.

scholarly journals Pursuing Frugal Innovation for Sustainability at the Grassroots Level

2021 ◽  
pp. 1-8
Author(s):  
Mokter Hossain ◽  
Jarkko Levänen ◽  
Marleen Wierenga
Keyword(s):  
Developing Countries ◽  
Environmental Sustainability ◽  
Business Models ◽  
Business Strategies ◽  
Future Research ◽  
Frugal Innovation ◽  
New Business ◽  
Grassroots Level ◽  
Societal Problems ◽  
New Business Models

ABSTRACT Firms are often criticized for their reluctance to embrace sustainability in their business strategies. Frugal innovation is a recent concept that represents a new way for firms to serve underserved customers in developing countries while also promoting sustainability. Based on three cases of frugal innovation at the grassroots level in India, this article demonstrates how frugal innovation presents a promising way to tackle some of today's pressing societal problems with new business models. We use a range of parameters for economic, social, and environmental sustainability to strengthen the case for frugal innovation. This article attempts to inspire scholars to consider frugal innovation further in their future research endeavors and encourage firms to integrate it into their existing business models.

scholarly journals Effects of Steel Fiber Percentage and Aspect Ratios on Fresh and Harden Properties of Ultra-High Performance Fiber

2021 ◽  
Vol 2 (3) ◽  
pp. 501-515
Author(s):  
Rajib Kumar Biswas ◽  
Farabi Bin Ahmed ◽  
Md. Ehsanul Haque ◽  
Afra Anam Provasha ◽  
Zahid Hasan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aspect Ratio ◽  
High Performance ◽  
Steel Fiber ◽  
Setting Time ◽  
Fiber Reinforced Concrete ◽  
Future Research ◽  
Manufacturing Cost ◽  
Aspect Ratios ◽  
High Performance Fiber

Steel fibers and their aspect ratios are important parameters that have significant influence on the mechanical properties of ultrahigh-performance fiber-reinforced concrete (UHPFRC). Steel fiber dosage also significantly contributes to the initial manufacturing cost of UHPFRC. This study presents a comprehensive literature review of the effects of steel fiber percentages and aspect ratios on the setting time, workability, and mechanical properties of UHPFRC. It was evident that (1) an increase in steel fiber dosage and aspect ratio negatively impacted workability, owing to the interlocking between fibers; (2) compressive strength was positively influenced by the steel fiber dosage and aspect ratio; and (3) a faster loading rate significantly improved the mechanical properties. There were also some shortcomings in the measurement method for setting time. Lastly, this research highlights current issues for future research. The findings of the study are useful for practicing engineers to understand the distinctive characteristics of UHPFRC.

The Corporate Governance of Environmental Sustainability: A Review and Proposal for More Integrated Research

2021 ◽  
pp. 014920632199121
Author(s):  
Ruth V. Aguilera ◽  
J. Alberto Aragón-Correa ◽  
Valentina Marano ◽  
Peter A. Tashman
Keyword(s):  
Corporate Governance ◽  
Environmental Sustainability ◽  
Boards Of Directors ◽  
Global Dimension ◽  
Top Management Teams ◽  
Future Research ◽  
Environmental Initiatives ◽  
Integrative Framework ◽  
Integrated Research ◽  
Systematic Understanding

As corporations’ environmental impact comes under greater scrutiny by global financial, regulatory, and societal stakeholders, management scholars have increasingly focused on the role of corporate governance as a tool for driving environmental initiatives. Still, we lack a comprehensive and systematic understanding of this emergent body of inquiry and a holistic agenda for future research. To address this gap, our integrative framework relates the key corporate governance actors to environmental sustainability outcomes from the extant literature and highlights its main methodological approaches and theoretical arguments. Our framework provides a critical analysis of what we know and points to the knowledge gaps around owners, boards of directors, CEOs, top management teams, and employees as corporate governance actors. We then highlight limitations in the existing literature as significant opportunities for further research to resolve its ambiguous conceptualizations of environmental sustainability constructs, various methodological and theoretical challenges, incomplete engagement with the global dimension of environmental sustainability, and limited analysis of how corporate governance actors may interact to shape environmental sustainability outcomes. We conclude by proposing novel approaches for addressing these issues, which we believe could generate a better way forward on studying the corporate governance of environmental sustainability.

scholarly journals Sustainability in Participatory Sports Events: The Development of a Research Instrument and Empirical Insights

2021 ◽  
Vol 13 (11) ◽  
pp. 6034
Author(s):  
Ine Hugaerts ◽  
Jeroen Scheerder ◽  
Kobe Helsen ◽  
Joris Corthouts ◽  
Erik Thibaut ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Environmental Sustainability ◽  
Online Survey ◽  
Three Dimensions ◽  
Future Research ◽  
Validity And Reliability ◽  
Research Instrument ◽  
Sports Events ◽  
The Social ◽  
Development Goals

The United Nations (UN) considers sports as an important enabler of sustainable development. The popular and fast-growing Participatory Sports Event (PSE) sector can play an important role in this regard, however, research that measures and reports sustainability in PSEs is scarce. Therefore, the aim of this paper was to construct and validate a research instrument based on the UN’s sustainable development goals, and to examine sustainability in PSEs. To this end, an online survey was administered among a representative sample of 303 PSE organisers, located in Flanders, Belgium. A confirmatory factor analysis affirmed the social, economic and environmental dimensions of the instrument and provided evidence for its validity and reliability. The results reveal significant discrepancies between the three dimensions, with a noticeable lower score for environmental sustainability compared to social and economic sustainability. Furthermore, challenges are highlighted in the field of the civil society sector and in walking sports events. The findings also indicate that large-sized events are more likely to be sustainable. The current study can act as a foundation for future research on sustainability in PSEs and can assist PSE organisers and policymakers to increase the sustainability-related performance of the sector.

scholarly journals Folk Theories of Artifact Creation: How Intuitions About Human Labor Influence the Value of Artifacts

2020 ◽  
Vol 24 (3) ◽  
pp. 195-211 ◽  
Author(s):  
Madeline Judge ◽  
Julian W. Fernando ◽  
Angela Paladino ◽  
Yoshihisa Kashima
Keyword(s):  
Environmental Sustainability ◽  
Industrial Production ◽  
Production Systems ◽  
Future Research ◽  
Folk Theory ◽  
Folk Physics ◽  
Lay Beliefs ◽  
Human Labor ◽  
Sociohistorical Context ◽  
Material Artifacts

What are the consequences of lay beliefs about how things are made? In this article, we describe a Western folk theory of artifact creation, highlighting how intuitive dualism regarding mental and physical labor (i.e., folk psychology) can lead to the perceived transmission of properties from makers to material artifacts (i.e., folk physics), and affect people’s interactions with material artifacts. We show how this folk theory structures the conceptual domain of material artifacts by differentiating the contemporary lay concepts of art/craft and industrial production, and how it influences people’s evaluations of different types of artifacts and their makers. We propose that the folk theory and lay concepts of art/craft and industrial production are best understood within a specific sociohistorical context, and review potential sources of cross-cultural and cross-temporal variation. We conclude by making recommendations for future research and examining the implications for promoting environmental sustainability and social justice in production systems.

scholarly journals High-growth firms and scale-ups: a review and research agenda

2019 ◽  
Vol 54 (1) ◽  
pp. 96-111
Author(s):  
Guilherme Fowler A. Monteiro
Keyword(s):  
Research Agenda ◽  
Design Methodology ◽  
Scale Up ◽  
High Growth ◽  
Levels Of Analysis ◽  
Future Research ◽  
Content Type ◽  
Growth Firms ◽  
Different Levels

Purpose This paper aims to conduct an extensive review and advances a framework for the literature of high-growth firms (HGFs) and scale-ups. Design/methodology/approach This paper takes the form of a literature review. Findings The author makes three specific contributions. First, he presents a broad review of high growth in firms, shedding light on the different levels of analysis. Second, he advances a characterization of scale-up companies to enable a better basis for discussion. Finally, he identifies gaps in the existing literature and suggest paths for future research. Originality/value The interest in HGFs and those referred to as scale-ups has increased considerably in recent years. Despite this trend, existing studies still have conceptual divergences and a gap separating theoretical inputs from the actual experiences of entrepreneurs.

scholarly journals Optimization of medical waste routing problem: The case of TRB1 region in Turkey

2019 ◽  
Vol 9 (2) ◽  
pp. 197-207
Author(s):  
Suleyman Mete ◽  
Faruk Serin
Keyword(s):  
Environmental Sustainability ◽  
Fundamental Problem ◽  
Medical Waste ◽  
Future Research ◽  
Risk Of Infection ◽  
Routing Problem ◽  
Solution Approach ◽  
Potential Risks ◽  
Health Institutions

A fundamental problem concerning medical waste disposal is the evaluation of the real and potential risks arising from waste with the focus on the risk of infection. Therefore, the optimization of medical waste routing from collection to disposal center can minimize the risk of infection. The routing of medical waste considers significant to determine potential routes and select the route with minimum distance. The management of the medical waste is important decision for environmental sustainability and includes the collection, transportation and disposal of these materials. In this paper, a geographic information system (GIS) solution approach is proposed to determine the best location of disposal center. Proposed approach is applied to medical waste transportation between 167 health institutions (collection centers) and predetermined 5 disposal centers through TRB1 region in Turkey, which consist of Malatya, Elaz??, Bingöl and Tunceli provinces. The results of case study are examined and suggestions for future research are provided.

scholarly journals Role of Responsible Leadership for Organizational Citizenship Behavior for the Environment in Light of Psychological Ownership and Employee Environmental Commitment: A Moderated Mediation Model

2021 ◽  
Author(s):  
Ali Abbas ◽  
Bilal Bilal ◽  
Ye Chengang ◽  
Shahid Manzoor ◽  
Irfan Ullah ◽  
...  
Keyword(s):  
Organizational Citizenship ◽  
Organizational Citizenship Behavior ◽  
Environmental Sustainability ◽  
Service Sector ◽  
Psychological Ownership ◽  
Citizenship Behavior ◽  
Future Research ◽  
Responsible Leadership ◽  
Environmental Commitment

The world is looking towards organizations for social responsibility to contribute to a sustainable environment. Employees’ organizational citizenship behavior for the environment (OCBE) is a voluntary environmental-oriented behavior that is important for organizations’ environmental performance. Based on social learning theory, the study examined the effects of responsible leadership in connection with OCBE by using a sample of 520 employees of manufacturing and service sector including engine manufacturing, petroleum plants banking and insurance sector organizations of China. Further, the role of psychological ownership and employee environmental commitment were used as mediators and moderators simultaneously. The direct, mediation, and moderation model results exposed a positive relationship between responsible leadership and OCBE via employee psychological ownership and employee environmental commitment. The study also revealed that the indirect effect is stronger when employees hold higher employee environmental commitment. The theoretical and practical implications for environmental sustainability in respect of organizations as well as future research directions are discussed.

scholarly journals How children living in poor informal settlements in the Greater Accra Region, Ghana, perceive global citizenship

2020 ◽  
Vol 12 (1) ◽  
pp. 69-83
Author(s):  
Jane Leithead ◽  
Steve Humble
Keyword(s):  
Social Justice ◽  
Environmental Sustainability ◽  
Structural Equation ◽  
Global Citizenship ◽  
Informal Settlements ◽  
Future Research ◽  
Global Awareness ◽  
Global Citizen ◽  
Equation Modelling ◽  
Greater Accra Region

This investigation looks at the antecedents and outcomes of 141 children living in poor informal settlements in the Greater Accra Region of Ghana identifying with global citizenship. It finds that the model of global citizenship devised by Reysen and Katzarska-Miller (2013) is a moderately good fit for this group of children. Structural equation modelling demonstrates that antecedents of global awareness as well as friends and family supporting global citizenship (normative environment) predict the child’s self-identification as a global citizen. This in turn predicts six prosocial traits: intergroup empathy, valuing diversity, social justice, environmental sustainability, intergroup helping and responsibility to act. The research suggests that there may be other elements to a global citizenship model that could be investigated in future research.

Sign in / Sign up

Export Citation Format

Share Document