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Self-limiting sociablity: food, alcohol, coffee, and the three principles of hospitality economics

Ariel Modrzyk
Kultura i Społeczeństwo | 2020 | No 1 | 108-127
Keywords hospitality sociology of everyday life alcohol coffee food
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Abstract

The author of the text focuses on the economics of everyday life as defined by a contextual and qualitative measuring of various aspects of hospitality through the use of terms such as “more,” “less,” and “just right.” He analyzes the presence of food, alcohol, and coffee during the visit of guests. Each of these three material components of hospitality is regulated according to specific principles: “too much is better than too little” in regard to food, “too little is better than too much” for alcohol, and there has to be “at least” coffee. A detailed analysis of these principles leads to the conclusion that Polish hospitality is today oriented toward moderation. The popular belief in the abundance of Polish hospitality as a national feature is thus called into question.
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Authors and Affiliations

Ariel Modrzyk
1
ORCID: ORCID
  1. Uniwersytet im. Adama Mickiewicza

The Use of Coffee Waste in the Reduction of Metallurgical Slags

T. Matuła Ł. Kortyka Ł. Myćka J. Łabaj T. Wojtal
Archives of Foundry Engineering | 2023 | vol. 23 | No 1 | 103-109 | DOI: 10.24425/afe.2023.144285
Keywords Solid coffee grounds reduction Copper slag Calorimeter
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Abstract

Coffee is grown in over 50 countries around the world, and its sale is the largest in the world trade after crude oil. In the case of coffee beans, after consumption remains a solid waste in the form of a waste plant extract. At present, coffee waste is not fully managed, which means that it is often deposited in landfills. Taking into account their availability on the market and the content of significant amounts of carbon in them, it was proposed to use them as a reducing agent in the processing of copper slags. The use of Solid Coffee Grounds (SCG) as an alternative reducing agent for coke and coke breeze can be beneficial in two aspects. The first is the reduction of carbon dioxide emissions in the process, and the second is due to the possible release of hydrocarbons from these wastes at high temperatures, which, apart from participating in the reduction process itself, causes also mixing of the bath in the melting unit, which facilitates the process of copper sedimentation in the slag. The experiments carried out on a laboratory scale showed the possibility of reducing the copper content in the slag after the reduction process from 10.3 to 0.41 % by mass. The obtained values of the relative degree of copper splashing for all experiments ranged from 88.4 to 96.0 %. The presented solution is an innovative approach to the use of SCG in the processing of copper slags.
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Authors and Affiliations

T. Matuła
1
ORCID: ORCID
Ł. Kortyka
Ł. Myćka
2
J. Łabaj
1 2
ORCID: ORCID
T. Wojtal
1
  1. Silesian University of Technology, Faculty of Materials Engineering, Krasińskiego 8, 40-019 Katowice, Poland
  2. Łukasiewicz Research Network - Institute of Non-Ferrous Metals, Sowińskiego 5, 44-100 Gliwice, Poland

Effect of feeding spent coffee grounds on the methane production in bovine rumen

K. Yamada K. Kawai Y. Inui K. Oda T. Kurumisawa Y. Shimizu Y Shinozuka
Polish Journal of Veterinary Sciences | 2024 | vol. 27 | No 2 | 271-278 | DOI: 10.24425/pjvs.2024.149357
Keywords bovine rumen coffee grounds greenhouse gases methane measurement
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Abstract

The environmental impact of methane, a greenhouse gas emitted from ruminants, is a pressing issue and methods to control methane emissions from ruminants are being investigated worldwide. In this study, we investigated the effects of the administration of spent coffee grounds (SCG) on methane production in the rumen in two cows. In the control condition (days 1 and 2), the cows were fed a basic diet twice daily (roughage and concentrate), and in the SCG condition (days 1 and 2) sequentially, the cows were fed the same basic diet and administered SCG into the rumen twice daily. The methane and carbon dioxide concentrations in rumen gas were measured via a fistula after feeding on days 2 in both cases of the study. The measurements were made using a newly developed gas measurement system with a portable gas monitor, and data were obtained for the control condition and SCG condition at each measurement time. The methane ratio at each measurement time was calculated from the methane and carbon dioxide concentrations, and compared between the two conditions. Statistical analysis showed no significant difference between the two conditions in the methane ratios after the morning (P=0.108) and afternoon feedings (P=0.345). However, the methane ratios before the morning (P=0.043) and afternoon feedings (P=0.008) were significantly lower in the SCG condition than in the control condition, suggesting that the administration of SCG may suppress methane production in the rumen.
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Bibliography

Bell MJ, Craigon J, Saunders N, Goodman JR, Garnsworthy PC (2018) Does the diurnal pattern of enteric methane emissions from dairy cows change over time? Animal 12: 2065-2070.

Bhatta R, Enishi O, Kurihara M (2007) Measurement of methane production from ruminants. Asian-Aust J Anim Sci 20: 1305-1318.

Czerkawski JW (1986) An introduction to rumen studies, Chapter 10, Transfer of metabolic hydrogen in the rumen. Pergamon Press, Oxford, pp 173-189.

European Commission (2015) Ban on antibiotics as growth promoters in animal feed enters into effect. https://ec.europa.eu/commission/presscorner/detail/en/IP_05_1687

Food and agricultural materials inspection center (FAMIC) (2020) Analytical standards of feeds, Chapter 3 (No.1-3, 7). FAMIC, Saitama, Japan, http://www.famic.go.jp/ffis/feed/bunseki/bunsekikijun.html

Johnson KA, Johnson DE (1995) Methane emissions from cattle. J Anim Sci 73: 2483-2492.

Kawai K, Kuruhara K, Matano Y, Akiyama K, Hashimura S, Tanaka S, Kiku Y, Watanabe A, Shinozuka Y (2018) Effects of coffee ground silage feeding in reducing somatic cell count in bovine subclinical mastitis milk. Asian J Anim Vet Adv 13: 377-382.

Kebreab E, Clark K, Wagner-Riddle C, France J (2006) Methane and nitrous oxide emissions from canadian animal agriculture: A review. Can J Anim Sci 86: 135-158.

Knapp JR, Laur GL, Vadas PA, Weiss WP, Tricarico JM (2014) Invited review: Enteric methane in dairy cattle production: Quantifying the op-portunities and impact of reducing emissions. J Dairy Sci 97: 3231-3261.

Kume S, Konaka K, Oshita T (2003) Effect of roughage on methane production and excretion of nitrogen and mineral in dry cattle. Res Bull Natl Agric Res Cent For Hokkaido Reg 178: 21-34.

Murthy PS, Madhava Naidu M (2012) Sustainable management of coffee industry by-products and value addition – A review. Resources, Con-servation and Recycling 66: 45-58.

Rodhe H (1990) A Comparison of the contribution of various gases to the greenhouse effect. Science 248: 1217-1219.

Russell JB, Strobel HJ (1989) Effect of ionophores on ruminal fermentation. Appl Environ Microbiol 55: 1-6.

Shiba N, Tsuneishi E, Matsuzaki M, Shioya S (2003) Effect of linseed oil calcium salt on the methane emission and carcass characteristics of beef cattle. Nihon Chikusan Gakkaiho 74: 37-42.

Socała K, Szopa A, Serefko A, Poleszak E, Wlaź P (2021) Neuroprotective effects of coffee bioactive compounds: A Review. Int J Mol Sci 22: 107. Storm IMLD, Hellwing ALF, Nielsen NI, Madsen J (2012) Methods for measuring and estimating methane emission from ruminants. Animals 2: 160-183.

UNFCCC GHG Data Interface (2019) https://di.unfccc.int/ detailed_data_by_party [accessed on Jan 18, 2022]

Van Soest PJ, McQueen RW (1973) The chemistry and estimation of fibre. Proc Nutr Soc 32: 123-130.

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Authors and Affiliations

K. Yamada
1
K. Kawai
2
Y. Inui
1
K. Oda
1
T. Kurumisawa
2
Y. Shimizu
2
Y Shinozuka
  1. Tsukuba Research Laboratories, Tokuyama Corporation, 40 Wadai, Tsukuba, Ibaraki, 300-4247, Japan
  2. School of Veterinary Medicine, Azabu University, 1-17-1 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan

Dynamic modelling of an anaerobic reactor treating coffee wet wastewater via multiple regression model

Yans Guardia-Puebla Edilberto Llanes-Cedeño Ana Velia Domínguez-León Quirino Arias-Cedeño Víctor Sánchez-Girón Gert Morscheck Bettina Eichler-Löbermann
Journal of Water and Land Development | 2021 | No 50 | 229-239 | DOI: 10.24425/jwld.2021.138178
Keywords coffee wet wastewater modelling multiple regression model upflow anaerobic sludge blanket (UASB)
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Abstract

A multiple regression model approach was developed to estimate buffering indices, as well as biogas and methane productions in an upflow anaerobic sludge blanket (UASB) reactor treating coffee wet wastewater. Five input variables measured (pH, alkalinity, outlet VFA concentration, and total and soluble COD removal) were selected to develop the best models to identify their importance on methanation. Optimal regression models were selected based on four statistical performance criteria, viz. Mallow’s Cp statistic (Cp), Akaike information criterion ( AIC), Hannan– Quinn criterion ( HQC), and Schwarz–Bayesian information criterion ( SBIC). The performance of the models selected were assessed through several descriptive statistics such as measure of goodness-of-fit test (coefficient of multiple determination, R2; adjusted coefficient of multiple determination, Adj-R2; standard error of estimation, SEE; and Durbin–Watson statistic, DWS), and statistics on the prediction errors (mean squared error, MSE; mean absolute error, MAE; mean absolute percentage error, MAPE; mean error, ME and mean percentage error, MPE). The estimated model reveals that buffering indices are strongly influenced by three variables (volatile fatty acids (VFA) concentration, soluble COD removal, and alkalinity); while, pH, VFA concentration and total COD removal were the most significant independent variables in biogas and methane production. The developed equation models obtained in this study, could be a powerful tool to predict the functionability and stability for the UASB system.
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Authors and Affiliations

Yans Guardia-Puebla
1
ORCID: ORCID
Edilberto Llanes-Cedeño
2
ORCID: ORCID
Ana Velia Domínguez-León
3
Quirino Arias-Cedeño
1
ORCID: ORCID
Víctor Sánchez-Girón
4
ORCID: ORCID
Gert Morscheck
5
Bettina Eichler-Löbermann
5
ORCID: ORCID
  1. University of Granma, Study Center for Applied Chemistry, Cuba
  2. Faculty of Architecture and Engineering, International SEK University, Quito, Ecuador
  3. Language Center, University of Granma, Cuba
  4. College of Agricultural, Food and Biosystems Engineering, Technical University of Madrid, Spain
  5. Faculty of Agronomy and Crop Science, University of Rostock, Germany

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