Into the net zero emissions and climate change control: From solid carbon waste to effective solar convertors

López-Sosa, Luis Bernardo; Zárate‐Medina, J.; González-Avilés, Mauricio; Servín-Campuzano, Hermelinda; Calderón-Benavides, Héctor Alfredo; Hernández, Francisco C. Robles

doi:10.1016/j.carbon.2022.01.066

Cited by 8 publications

(4 citation statements)

References 73 publications

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“…The addition of small amounts of different carbon nanostructures has demonstrated a positive influence on improving mechanical properties. − The reinforcement of the chitosan matrix has been reported for carbon nanostructures like nanotubes and graphene, showing enhancements in the mechanical behavior with no negative effects toward the environment . Similarly, part of our contribution in this work is to demonstrate the benefits of soot and morphed graphene (MG) as effective reinforcement , and heat absorber …”

Section: Introductionmentioning

confidence: 80%

“…16 Similarly, part of our contribution in this work is to demonstrate the benefits of soot and morphed graphene (MG) as effective reinforcement 11,17 and heat absorber. 18 Here we propose the development of new biocomposites using a chitosan matrix with additions of morphed graphene. We identify our composites as "chitosan-morphed graphene composites" or CMGCs.…”

Section: ■ Introductionmentioning

confidence: 99%

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Sustainable Biocomposites for Structural Applications with Environmental Affinity

Raghatate

Cortes-Vega

Meraz

et al. 2022

ACS Appl. Mater. Interfaces

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In this work, we report a facile preparation of biocomposites using a chitosan matrix that is reinforced with morphed graphene in amounts from 1 to 5 wt % C. The composites are processed by milling and conventional sintering. The morphed graphene additions show clear improvements in mechanical properties, having a direct correlation with temperature in particular for 180 °C. Higher temperatures are detrimental to chitosan and the properties drop because chitosan degrades. Mechanical properties in the composite such as yield strength and compressive strength increase between 40 and 50% with respect to the pure chitosan samples. The Young's modulus presents a drop of approximately 10%, but the fracture toughness increases up to 3.5 fold. The properties of our sustainable composites are comparable to those seen in polymers such as polyethylene, polypropylene, nylon, and poly(methyl methacrylate), among other commodity or single use plastics. The enhancement in the mechanical properties is attributed to the morphed graphene embedded chitosan matrix that generates a network of intergranular "anchors" that hold the chitosan crystals in place, preventing failure. The composites can be molded into near-net-shape products, machined, or shaped using various methods including laser lithography. These studies demonstrate the feasibility of fabricating biocomposites with different architectures and sizes for disposable structural components. Both chitosan and the composites are compostable and biodegradable with the potential to sustain plant growth when discarded. In addition, morphed graphene and chitosan are produced from byproducts or waste, which may result in a negative carbon footprint on the environment.

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Section: Introductionmentioning

confidence: 80%

Section: ■ Introductionmentioning

confidence: 99%

Sustainable Biocomposites for Structural Applications with Environmental Affinity

Raghatate

Cortes-Vega

Meraz

et al. 2022

ACS Appl. Mater. Interfaces

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“…The construction incorporated locally available materials, which make it possible for the repair of this technology to be achieved without difficulties (Figure 7). It has an aluminum structure, polycarbonate walls with a UV protection cover, the surface solar collector is a glass cover on a metal sheet plate with a low environmental impact absorbent film made with materials derived from combustion (López-Sosa et al, 2020, 2022), and the drying trays are made of food grade aluminum and mesh (Figure 7(a)–(d)). The device works indirectly the sun's rays reach a solar absorbing cover made of black galvanized sheet, which transfers the heat to the drying chamber where the trays containing medicinal plants are located.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, in this safeguarding approach, the contemporary articulation between traditional knowledge and technological co-development can coexist, to generate improvements in medicinal plant processing practice through efficient and sustainable drying mechanisms, with community available materials, and responding from ecotechniques that satisfy needs and adapt to local ways of life, as has happened with some experiences reported in the literature (L.B. López-Sosa, A. Ortíz-Carrión, D. Espinoza-Gómez, J. Zárate-Medina, 2021; López-Sosa et al, 2019, 2022; Morales-Máximo et al, 2022; Morales et al, 2020; Sosa et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Use of design thinking in the proposal of a multi-compound solar dryer applied to processes of traditional P'urhépecha Medicine

Núñez-Montiel,

Cira-Ramos,

Corral-Huacuz

et al. 2024

Energy Exploration & Exploitation

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The development of small-scale solar thermal technologies is useful to address specific energy needs; however, there is a gap between the technology that is developed and the one that is accepted and achieves its use in a sustained long-term manner. In this sense, the development of a double-inclination solar dryer for the dehydration of medicinal plants used in traditional P'urhépecha medicine is presented. From a participatory and consensual perspective of technological co-creation with the user that allows promoting its long-term use, the solar dryer was generated from the Design Thinking methodology and the conventional technological development process. The stages of the proposed process considered the identification of the energy need, the design, sizing and simulation, the prototyping, and the characterization and implementation of the technology in a group of traditional doctors for the drying of local medicinal plants. The result is a solar dryer with thermal efficiency of 23% and exergy efficiency of 3%, which achieves the dehydration of medicinal plants in 1 day with 4.7 kWh of average solar irradiance, and removes more than 80% of the humidity from a maximum load of 5 kilograms. The temperature of the drying chamber exceeds 50°C, and the energy distribution is homogeneous, being a natural convection device, easy to build and with affordable materials. This technology has been implemented in the home of a traditional doctor and it is expected that it can be replicated to satisfy the demand for drying products in indigenous community families in Mexico.

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Polyethylene glycol infiltrated biomass-derived porous carbon phase change composites for efficient thermal energy storage

Hu,

Zhang,

Quan

et al. 2024

Adv Compos Hybrid Mater

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With the sharp increase in modern energy consumption, phase change composites with the characteristics of rapid preparation are employed for thermal energy storage to meet the challenge of energy crisis. In this study, a NaCl-assisted carbonization process was used to construct porous Pleurotus eryngii carbon with ultra-low volume shrinkage rate of 2%, which providing enormous space for encapsulation of phase change materials. Such composite possesses exceptional thermal stability, with an absorption rate of 88.24%, a melting enthalpy of 174.87 J/g, and a relative enthalpy e ciency of 97.78%. Consequently, the resultant composites exhibit outstanding performances in storing and releasing thermal energy for photo-thermal, electric-thermal and magnetic-thermal conversion. This study presents a highly valuable strategy into the quick fabrication of phase change composites, facilitating their practical applications in thermal energy storage.

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Into the net zero emissions and climate change control: From solid carbon waste to effective solar convertors

Cited by 8 publications

References 73 publications

Sustainable Biocomposites for Structural Applications with Environmental Affinity

Sustainable Biocomposites for Structural Applications with Environmental Affinity

Use of design thinking in the proposal of a multi-compound solar dryer applied to processes of traditional P'urhépecha Medicine

Polyethylene glycol infiltrated biomass-derived porous carbon phase change composites for efficient thermal energy storage

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