Progress in sustainable technologies of leather wastes valorization as solutions for the circular economy

Chojnacka, Katarzyna; Skrzypczak, Dawid; Mikula, Katarzyna; Witek‐Krowiak, Anna; Izydorczyk, Grzegorz; Kuligowski, Ksawery; Bandrów, Paulina; Kułażyński, Marek

doi:10.1016/j.jclepro.2021.127902

Cited by 77 publications

(33 citation statements)

References 106 publications

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“…Circular economy term, designed as a cyclic flow of raw materials and energy consumption, considers the systems defined in sustainability, and enabling a cost-effective improvement and resilience. Cyclic flow in the circular economy focuses on economic development by resource utilization, sustainable consumption of resources, re-manufacturing, and environmental protection (Chojnacka et al, 2021;Silva et al, 2022). Circular economy can be an alternative solution to the ever-increasing demand to fixed quantity natural resources due rapid growth in population, urbanization and industrialization by providing a continuous flow of recycled raw materials.…”

Section: From Linear To Circular Flow In Economy Strategiesmentioning

confidence: 99%

Industrial Waste Management: Economical Benefits of the Resource Utilization of Phosphogypsum

Avşar¹,

Gezerman²

2022

ijim

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There are many publications in the literature on the reuse of waste gypsum in material production. In this study, in which the analysis of these existing publications is made through the determinations, the data examined are limited to the article and these are not included. However, to understand the general framework of the research in this field better, a few of these in the related literature are given below as examples. It is seen that industrial waste gypsum, which is a type of waste gypsum, has been examined more. Phosphogypsum, which is included in this waste group, reduces the water requirement for adjusting the cement consistency by adding phosphogypsum in cement production. As a result of the addition of phosphogypsum in wall element production, it was determined that the addition of phosphogypsum caused a decrease in mechanical strength, a decrease in unit weight and an increase in water requirement. It has been concluded that the addition of 15% phosphogypsum in soil stabilization of phosphogypsum, which is in the chemical waste class, causes an increase in water demand and pressure strength. In addition, 5.4% gypsum board waste with recycling potential is generated in the production of building elements made with waste gypsum boards formed at a construction site.

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Section: From Linear To Circular Flow In Economy Strategiesmentioning

confidence: 99%

Industrial Waste Management: Economical Benefits of the Resource Utilization of Phosphogypsum

Avşar¹,

Gezerman²

2022

ijim

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“…The combined annual generation of keratin waste associated with wool and feathers has been estimated as 30 billion tons [49]. The valorisation of these wastes to obtain sustainable source of keratin will reduce the issues of residue disposal and offer a solution for circular economy [50]. Keratin extracted from wool or hair can be formed into various forms and shapes, such as film and coating [51], scaffold [52], hydrogel [53], and nanofibre.…”

Section: Keratinmentioning

confidence: 99%

Waste Reutilization in Polymeric Membrane Fabrication: A New Direction in Membranes for Separation

2021

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In parallel to the rapid growth in economic and social activities, there has been an undesirable increase in environmental degradation due to the massively produced and disposed waste. The need to manage waste in a more innovative manner has become an urgent matter. In response to the call for circular economy, some solid wastes can offer plenty of opportunities to be reutilized as raw materials for the fabrication of functional, high-value products. In the context of solid waste-derived polymeric membrane development, this strategy can pave a way to reduce the consumption of conventional feedstock for the production of synthetic polymers and simultaneously to dampen the negative environmental impacts resulting from the improper management of these solid wastes. The review aims to offer a platform for overviewing the potentials of reutilizing solid waste in liquid separation membrane fabrication by covering the important aspects, including waste pretreatment and raw material extraction, membrane fabrication and characterizations, as well as the separation performance evaluation of the resultant membranes. Three major types of waste-derived polymeric raw materials, namely keratin, cellulose, and plastics, are discussed based on the waste origins, limitations in the waste processing, and their conversion into polymeric membranes. With the promising material properties and viability of processing facilities, recycling and reutilization of waste resources for membrane fabrication are deemed to be a promising strategy that can bring about huge benefits in multiple ways, especially to make a step closer to sustainable and green membrane production.

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“…The first implementing act of the CE Action Plan was "Proposal laying down rules on the making available on the market of CE marked fertilizing products", published in 2016 [26]. The innovative fertilizing products, including waste-based fertilizers, were clearly indicated as products which are in line with the CE model [27]. However, they have difficulties accessing the internal market as a consequence of the diversity of national rules and standards on fertilizers and fertilization.…”

Section: Waste-based Fertilizers In the European Strategic Documentsmentioning

confidence: 99%

Transition to Circular Economy in the Fertilizer Sector—Analysis of Recommended Directions and End-Users’ Perception of Waste-Based Products in Poland

Smol

2021

Energies

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Circular economy (CE) is an economic model, in which raw materials remain in circulation as long as possible and the generation of waste is minimized. In the fertilizer sector, waste rich in nutrients should be directed to agriculture purposes. This paper presents an analysis of recommended directions for the use of nutrient-rich waste in fertilizer sector and an evaluation of possible interest in this kind of fertilizer by a selected group of end-users (nurseries). The scope of research includes the state-of-the-art analysis on circular aspects and recommended directions in the CE implementation in the fertilizer sector (with focus on sewage-based waste), and survey analysis on the potential interest of nurseries in the use of waste-based fertilizers in Poland. There are more and more recommendations for the use of waste for agriculture purposes at European and national levels. The waste-based products have to meet certain requirements in order to put such products on the marker. Nurserymen are interested in contributing to the process of transformation towards the CE model in Poland; however, they are not fully convinced due to a lack of experience in the use of waste-based products and a lack of social acceptance and health risk in this regard. Further actions to build the social acceptance of waste-based fertilizers, and the education of end-users themselves in their application is required.

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Progress in sustainable technologies of leather wastes valorization as solutions for the circular economy

Cited by 77 publications

References 106 publications

Industrial Waste Management: Economical Benefits of the Resource Utilization of Phosphogypsum

Industrial Waste Management: Economical Benefits of the Resource Utilization of Phosphogypsum

Waste Reutilization in Polymeric Membrane Fabrication: A New Direction in Membranes for Separation

Transition to Circular Economy in the Fertilizer Sector—Analysis of Recommended Directions and End-Users’ Perception of Waste-Based Products in Poland

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