Principles of minimal wrecking and maximum separation of solid waste to innovate tanning industries and reduce their environmental impact: The case of paperboard manufacture

Bufalo, Gennaro; Florio, Claudia; Cinelli, Giuseppe; Lopez, Francesco; Cuomo, Francesca; Ambrosone, Luigi

doi:10.1016/j.jclepro.2017.11.006

Cited by 16 publications

(14 citation statements)

References 19 publications

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“…The rising interest in the valorizing of industrial by-products is one of the main reasons for exploring different separation methods of leather waste along the production-chain in the tanning industry. Recently, we showed that through a detailed and accurate separation of waste, during leather processing, an optimal zero-waste condition may be attained [25]. The main reason that led to this success is that the tanned leather waste raw material was made economically advantageous for other production cycles.…”

Section: Discussionmentioning

confidence: 99%

“…For OT samples, a stabilization procedure was not necessary because the stability was ensured by its humidity. Chemical analyzes on raw materials were discussed in a previous paper [25].…”

Section: Methodsmentioning

confidence: 99%

“…Several efforts to enhance the interfacial adhesion of natural tanned leather fibers have been proposed [22], but their industrial implementations are often complicated by the large amounts of chemicals involved or the multiple processing steps required. The aim of the work is to stress that a strategy can be carried out to use, without any pretreatment, the most suitable tanned waste for the production of specific rubber products, the choice is made according to zero-waste condition [24], which may be achieved by applying the requirements of maximum separation and minimal wrecking [25]. A very careful separation of leather waste, along the entire production chain, leads to the identification of homogeneous classes of by-products, which behave as raw materials.…”

Section: Introductionmentioning

confidence: 99%

“…A very careful separation of leather waste, along the entire production chain, leads to the identification of homogeneous classes of by-products, which behave as raw materials. These can be used for manufacturing novel products without wrecking the intrinsic structure of leather waste, with a net economic saving [25]. Furthermore, the life cycle material is lengthened and the environmental impact significantly reduced.…”

Section: Introductionmentioning

confidence: 99%

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Selection of Tanned-Leather Waste in Recovering Novel Raw Material for Manufacturing Rubber Artifacts: Towards a Zero-Waste Condition

2020

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Zero-waste is an ambitious goal to encourage sustainable production, consumption optimum recycling and resource recovery. The recycling and resource recovery of chrome-tanned leather waste is a difficult proposition because of the three-dimensional chemical network of collagen, which renders leather waste incompatible to polymer matrices. Many attempts have been undertaken to reuse leather waste, most of them require technological processes and challenging chemical pretreatments, which make the reuse an economically disadvantageous industrial operation. The paper aims to show how a very fine separation of leather solid waste leads to raw materials suitable for mixtures with natural rubber, without any chemical pretreatment. In other words, the paper intends to be a stimulus to manage leather solid waste carefully to start a cleaner and more profitable production. In particular, various industrial compounds containing different concentrations of post-tanning dyeing, or chrome shaving or oil-tanning and natural rubber were vulcanized through a standard preparation. Some compounds were also reinforced with carbon black and the vulcanization kinetics were monitored through rheometer. Experimental results indicate that there exists an optimal concentration of waste such that post-tanning dyeing post-tanning and chrome shaving are suitable for manufacture floor mats, soles and heels while oil-tanning waste can be used for making hose or conveyor belts. The mechanical performances of the articles prepared by direct mixing with leather waste are the same as those of commercially distributed rubber products.

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Section: Discussionmentioning

confidence: 99%

“…For OT samples, a stabilization procedure was not necessary because the stability was ensured by its humidity. Chemical analyzes on raw materials were discussed in a previous paper [25].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Selection of Tanned-Leather Waste in Recovering Novel Raw Material for Manufacturing Rubber Artifacts: Towards a Zero-Waste Condition

2020

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“…The leather manufacturing processes, such as trimming, buffing, shaving, and splitting, generate a large amount of leather solid wastes, which are usually incinerated or discarded in landfills or inappropriate places . The major component of these leather solid wastes mainly was fibrous collagen …”

Section: Introductionmentioning

confidence: 99%

Physico‐mechanical, thermal, and ultraviolet light barrier properties of collagen hydrolysate films from leather solid wastes incorporated with nano TiO₂

Erciyes

Ocak

2019

Polymer Composites

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In the present research, titanium dioxide (TiO2) nanoparticles (NPs) were prepared by using sol‐gel technique, and the phase structure and morphology of obtained TiO2 NPs were characterized by using X‐ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The XRD patterns of the TiO2 NPs indicated the formation of anatase phase. A new nanocomposite film has been developed by solvent casting method from collagen hydrolysate (CH) and TiO2 NPs at different concentrations for use in packaging industry. Fourier transform infrared (FTIR) spectra showed the intermolecular reactions between CH and TiO2 NPs in the films. SEM micrographs revealed a clear dispersion of TiO2 NPs on the surface of the films especially at low concentrations. Thermal analyses showed that after incorporation of TiO2 NPs in polymer matrix, heat susceptibility of films were changed and weight loss of films was decreased. The results revealed that incorporation of TiO2 NPs significantly decremented water vapor permeability (WVP), water solubility, and elongation at break (EAB) of the films, whereas tensile strength (TS) significantly incremented. The findings pointed out that TiO2 NPs can be successfully incorporate to the CH films and the reutilization of CH in nanocomposite films will be a promising alternative material in non‐food packaging industry.

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Long-Term Water Management Model for Preserving Sustainable Useful Capacity of Reservoirs

Molino

Vincenzo

Minó

et al. 2023

Water Resour Manage

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In this study, we present a long-term water management model which can be an important tool for the ordinary management of a reservoir. The model can be made simple and applicable in a graphic form. The key point of the model is that the sedimentation rate of solids can be modeled according to a power law. The basic equation of the model is tested using bathymetric surveys of different dams located in different parts of the world. Robustness and predictive power are evaluated both numerically and by comparison with satellite results. Then the model is transformed into the form of a management plot and applied to the real case of the Camastra dam.

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Principles of minimal wrecking and maximum separation of solid waste to innovate tanning industries and reduce their environmental impact: The case of paperboard manufacture

Cited by 16 publications

References 19 publications

Selection of Tanned-Leather Waste in Recovering Novel Raw Material for Manufacturing Rubber Artifacts: Towards a Zero-Waste Condition

Selection of Tanned-Leather Waste in Recovering Novel Raw Material for Manufacturing Rubber Artifacts: Towards a Zero-Waste Condition

Physico‐mechanical, thermal, and ultraviolet light barrier properties of collagen hydrolysate films from leather solid wastes incorporated with nano TiO₂

Long-Term Water Management Model for Preserving Sustainable Useful Capacity of Reservoirs

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Principles of minimal wrecking and maximum separation of solid waste to innovate tanning industries and reduce their environmental impact: The case of paperboard manufacture

Cited by 16 publications

References 19 publications

Selection of Tanned-Leather Waste in Recovering Novel Raw Material for Manufacturing Rubber Artifacts: Towards a Zero-Waste Condition

Selection of Tanned-Leather Waste in Recovering Novel Raw Material for Manufacturing Rubber Artifacts: Towards a Zero-Waste Condition

Physico‐mechanical, thermal, and ultraviolet light barrier properties of collagen hydrolysate films from leather solid wastes incorporated with nano TiO2

Long-Term Water Management Model for Preserving Sustainable Useful Capacity of Reservoirs

Contact Info

Product

Resources

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Physico‐mechanical, thermal, and ultraviolet light barrier properties of collagen hydrolysate films from leather solid wastes incorporated with nano TiO₂