Spent Coffee Grounds and Coffee Silverskin as Potential Materials for Packaging: A Review

2021 ◽  
Author(s):  
Coralia V. Garcia ◽  
Young-Teck Kim
Keyword(s):  
Spent Coffee Grounds ◽  
Coffee Silverskin ◽  
Coffee Grounds

scholarly journals Chemical, Functional, and Structural Properties of Spent Coffee Grounds and Coffee Silverskin

2014 ◽  
Vol 7 (12) ◽  
pp. 3493-3503 ◽  
Author(s):  
Lina F. Ballesteros ◽  
José A. Teixeira ◽  
Solange I. Mussatto
Keyword(s):  
Structural Properties ◽  
Spent Coffee Grounds ◽  
Coffee Silverskin ◽  
Coffee Grounds

scholarly journals Sustainable Exploitation of Coffee Silverskin in Water Remediation

2018 ◽  
Vol 10 (10) ◽  
pp. 3547 ◽  
Author(s):  
Angela Malara ◽  
Emilia Paone ◽  
Patrizia Frontera ◽  
Lucio Bonaccorsi ◽  
Giuseppe Panzera ◽  
...  
Keyword(s):  
Adsorption Equilibrium ◽  
Water Remediation ◽  
Isotherm Models ◽  
Adsorption Efficiency ◽  
Spent Coffee Grounds ◽  
Ion Removal ◽  
Coffee Silverskin ◽  
Coffee Grounds ◽  
Adsorption Data ◽  
Potential Toxic Metals

Coffee silverskin (CS), the main solid waste produced from the coffee industry, has efficiently been used as adsorbent material to remove potential toxic metals (PTMs). In order to assess its suitability in water remediation, kinetic adsorption experiments of Cu2+, Zn2+, and Ni2+ ions from wastewater were carried out and the adsorption performance of the waste material was compared with that of another well-known waste from coffee industry, spent coffee grounds (SCG). By using CS as sorbent material, ion removal follows the order Cu2+ > Zn2+ > Ni2+ with the adsorption equilibrium occurring after about 20 min. The adsorption efficiency of Ni2+ ions is the same for both investigated materials, while Cu2+ and Zn2+ ions are removed to a lesser extent by using CS. Equilibrium-adsorption data were analyzed using two different isotherm models (Langmuir and Freundlich), demonstrating that monolayer-type adsorption occurs on both CS and SCG surfaces. The overall results support the use of coffee silverskin as a new inexpensive adsorbent material for PTMs from wastewater.

scholarly journals Feasibility of Vermicomposting of Spent Coffee Grounds and Silverskin from Coffee Industries: A Laboratory Study

Agronomy ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1125
Author(s):  
M.A. González-Moreno ◽  
B. García Gracianteparaluceta ◽  
S. Marcelino Sádaba ◽  
J. Zaratiegui Urdin ◽  
E. Robles Domínguez ◽  
...  
Keyword(s):  
Total Biomass ◽  
Eisenia Andrei ◽  
Spent Coffee Grounds ◽  
Germination Test ◽  
Cocoon Production ◽  
Coffee Silverskin ◽  
Production And Consumption ◽  
Coffee Grounds ◽  
Seed Germination Test ◽  
By Products

In the coffee industry, several by-products are generated during the production and consumption of coffee and represent an important waste from an environmental viewpoint. For improving the knowledge about this issue, a laboratory vermicomposting study of coffee silverskin (CS) and spent coffee grounds (SCG) spiked with mature horse manure (HM) in different proportions and using earthworm Eisenia andrei was carried out. The 60-day study focused on biological parameters such as total biomass gain, growth rate, cocoon production, and mortality. This study also investigated whether the vermicompost obtained could be useful and lacked toxicity through a seed germination test using hybrid wheat seeds. Results showed a disparity depending on the type of residue and the mixture used. Best options were those treatments with a medium–low amount of residue; 25% for SCG and 25% or 50% for CS. In addition, lack of toxicity was confirmed in all treatments. In conclusion, it is possible to carry out a vermicomposting of SCG and CS with some specific features.

scholarly journals Performance Optimisation of Fuel Pellets Comprising Pepper Stem and Coffee Grounds through Mixing Ratios and Torrefaction

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4667
Author(s):  
Sunyong Park ◽  
Hui-Rim Jeong ◽  
Yun-A Shin ◽  
Seok-Jun Kim ◽  
Young-Min Ju ◽  
...  
Keyword(s):  
Calorific Value ◽  
Basic Information ◽  
Spent Coffee Grounds ◽  
Mixing Ratios ◽  
Moisture Contents ◽  
Fuel Pellets ◽  
Coffee Grounds ◽  
Coffee Ground ◽  
Fuel Characteristics ◽  
By Products

Agricultural by-products have several disadvantages as fuel, such as low calorific values and high ash contents. To address these disadvantages, this study examined the mixing of agricultural by-products and spent coffee grounds, for use as a solid fuel, and the improvement of fuel characteristics through torrefaction. Pepper stems and spent coffee grounds were first dried to moisture contents of <15% and then combined, with mixing ratios varying from 9:1 to 6:4. Fuel pellets were produced from these mixtures using a commercial pelletiser, evaluated against various standards, and classified as grade A, B, or Bio-SRF. The optimal ratio of pepper stems to spent coffee grounds was determined to be 8:2. The pellets were torrefied to improve their fuel characteristics. Different torrefaction temperatures improved the mass yields of the pellets to between 50.87% and 88.27%. The calorific value increased from 19.9% to 26.8% at 290 °C. The optimal torrefaction temperature for coffee ground pellets was 230 °C, while for other pellets, it was 250 °C. This study provides basic information on the potential enhancement of agricultural by-products for fuel applications.

scholarly journals Statistical Optimization of Alkali Pretreatment to Improve Sugars Recovery from Spent Coffee Grounds and Utilization in Lactic Acid Fermentation

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 494 ◽  
Author(s):  
Kang Hyun Lee ◽  
Ye Won Jang ◽  
Jeongho Lee ◽  
Seunghee Kim ◽  
Chulhwan Park ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Enzymatic Hydrolysis ◽  
Lactic Acid Production ◽  
Complex Loading ◽  
Lactic Acid Fermentation ◽  
Optimum Conditions ◽  
Spent Coffee Grounds ◽  
Alkali Pretreatment ◽  
Acid Fermentation ◽  
Coffee Grounds

Biorefinery, which utilizes carbon-neutral biomass as a resource, is attracting attention as a significant alternative in a modern society confronted with climate change. In this study, spent coffee grounds (SCGs) were used as the feedstock for lactic acid fermentation. In order to improve sugar conversion, alkali pretreatment was optimized by a statistical method, namely response surface methodology (RSM). The optimum conditions for the alkali pretreatment of SCGs were determined as follows: 75 °C, 3% potassium hydroxide (KOH) and a time of 2.8 h. The optimum conditions for enzymatic hydrolysis of pretreated SCGs were determined as follows: enzyme complex loading of 30-unit cellulase, 15-unit cellobiase and 50-unit mannanase per g biomass and a reaction time of 96 h. SCG hydrolysates were used as the carbon source for Lactobacillus cultivation, and the conversions of lactic acid by L. brevis ATCC 8287 and L. parabuchneri ATCC 49374 were 40.1% and 55.8%, respectively. Finally, the maximum lactic acid production by L. parabuchneri ATCC 49374 was estimated to be 101.2 g based on 1000 g of SCGs through the optimization of alkali pretreatment and enzymatic hydrolysis.

scholarly journals Spent coffee grounds and tea leaf residues: Characterization, evaluation of thermal reactivity and recovery of high-value compounds

2021 ◽  
Vol 150 ◽  
pp. 106141
Author(s):  
Ekaterina Sermyagina ◽  
Clara Lisseth Mendoza Martinez ◽  
Markku Nikku ◽  
Esa Vakkilainen
Keyword(s):  
Spent Coffee Grounds ◽  
Thermal Reactivity ◽  
Coffee Grounds ◽  
Tea Leaf
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