Sustainable application of recycled espresso coffee capsules: Natural composite development for a home composter product

Bomfim, Anne Shayene Campos de; Voorwald, Herman Jacobus Cornelis; Benini, Kelly Cristina Coelho de Carvalho; Oliveira, Daniel Magalhães de; Fernandes, Martin Ferreira; Cioffi, Maria Odila Hilário

doi:10.1016/j.jclepro.2021.126647

Cited by 17 publications

(12 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… 29 Authors have also proposed a maleic anhydride coupling agent to facilitate adhesion between polypropylene and coffee grounds, increasing elastic modulus while tensile strength decreased. 31 The reported observation of composites filled with 20% of coffee grounds identified the appearance of stress concentrators as voids and pullouts in fractured tensile surfaces. Other authors report a decrease in the mechanical performances by adding the coffee grounds into the pectin biopolymer due to higher water absorption in humid environments.…”

Section: Resultsmentioning

confidence: 99%

“…At every loading, different effects of SCG on the PBS crystallization process were observed, where 20 wt% remained closer to PBS, while 40 wt% promoted the crystallization process the most, even achieving higher crystallinity compared to PBS. According to de Bomfim, 31 30% of coffee filler can decrease the melting enthalpy by 50% and crystallinity by 40% of the polypropylene. The enhancement of the polymer matrix's amorphous phase content after SCG incorporation into the biopolymer was discussed.…”

Section: Resultsmentioning

confidence: 99%

“… 30 Reusing the post-consumer waste espresso coffee capsule waste as raw recycled PP material for the preparation of 30–40% coffee grounds composite is reported recently. 31 Wang used up to 40% of the coffee hull to reinforce polyethylene (PE) matrix composites processed with masterbatch extrusion process. 32 …”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Spent coffee waste as a renewable source for the production of sustainable poly(butylene succinate) biocomposites from a circular economy perspective

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Spent coffee waste as a renewable source for the production of sustainable poly(butylene succinate) biocomposites from a circular economy perspective

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, these composites were developed for a specific application on home composters. The authors conclude that the composite with 30 wt.% of SCG and without MAPP was the most suitable for this application, which was aiming for an environmentally friendly product [ 127 ].…”

Section: Scg Polymer Compositesmentioning

confidence: 99%

Valorization of Spent Coffee Grounds as Precursors for Biopolymers and Composite Production

et al. 2022

View full text Add to dashboard Cite

Spent coffee grounds (SCG) are a current subject in many works since coffee is the second most consumed beverage worldwide; however, coffee generates a high amount of waste (SCG) and can cause environmental problems if not discarded properly. Therefore, several studies on SCG valorization have been published, highlighting its waste as a valuable resource for different applications, such as biofuel, energy, biopolymer precursors, and composite production. This review provides an overview of the works using SCG as biopolymer precursors and for polymer composite production. SCG are rich in carbohydrates, lipids, proteins, and minerals. In particular, carbohydrates (polysaccharides) can be extracted and fermented to synthesize lactic acid, succinic acid, or polyhydroxyalkanoate (PHA). On the other hand, it is possible to extract the coffee oil and to synthesize PHA from lipids. Moreover, SCG have been successfully used as a filler for composite production using different polymer matrices. The results show the reasonable mechanical, thermal, and rheological properties of SCG to support their applications, from food packaging to the automotive industry.

show abstract

“…The equations that model these finite elements are assembled into a system of equations that models the entire problem. The FEA application covers a wide range of engineering and scientific problems [18][19][20][21]. Owolabi et al studied the notch root radius effect on the probability of failure [18].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Analysis of Threaded Components with Cd and Zn-Ni Anticorrosive Coatings

Santos

Fernandes

Velloso

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

The influence of the electrodeposition of cadmium and zinc-nickel and the stress concentration effect on the fatigue behavior of AISI 4140 steel threaded components were studied. Axial fatigue tests at room temperature with a stress ratio of R = 0.1 were performed using standard and threaded specimens with and without nut interface under base material, cadmium, and zinc-nickel-coated conditions. Finite element analysis (FEA) was used, considering both elastic and elastoplastic models, to quantify the stress distribution and strain for threaded specimens with and without a nut interface. The numeric results were correlated to the experimental fatigue data of threaded components with and without the nut interface, to allow the oil & gas companies to extrapolate the results for different thread dimensions, since the experimental tests are not feasible to be performed for all thread interfaces. Scanning electron microscopy (SEM) was used to analyze the fracture surfaces. The stress concentration factor had a greater influence on the fatigue performance of threaded components than the effect of the Cd and Zn-Ni coatings. The fatigue life of studs reduced by about 58% with the nut/stud interface, compared to threaded components without nuts. The elastoplastic FEA results showed that studs with a stud/nut interface had higher stress values than the threaded specimens without a nut interface. The FEA results showed that the cracks nucleated at the regions with higher strain, absorbed energy, and stress concentration. The substitution of Cd for a Zn-Ni coating was feasible regarding the fatigue strength for threaded and smooth components.

show abstract

Sustainable application of recycled espresso coffee capsules: Natural composite development for a home composter product

Cited by 17 publications

References 60 publications

Spent coffee waste as a renewable source for the production of sustainable poly(butylene succinate) biocomposites from a circular economy perspective

Spent coffee waste as a renewable source for the production of sustainable poly(butylene succinate) biocomposites from a circular economy perspective

Valorization of Spent Coffee Grounds as Precursors for Biopolymers and Composite Production

Fatigue Analysis of Threaded Components with Cd and Zn-Ni Anticorrosive Coatings

Contact Info

Product

Resources

About