scholarly journals Analysis of the possibility for obtaining oil from the spend coffee grounds as potential raw material for biodiesel production

2012 ◽  
Vol 66 (4) ◽  
pp. 581-586 ◽  
Author(s):  
Zoran Ilickovic ◽  
Eldin Redzic ◽  
Franc Andrejas ◽  
Gordan Avdic ◽  
Vedran Stuhli
Keyword(s):  
Petroleum Ether ◽  
Process Parameters ◽  
Raw Material ◽  
Biodiesel Production ◽  
Oil Yield ◽  
Solvent Ratio ◽  
Spent Coffee Grounds ◽  
Weight Percentage ◽  
Soxhlet Apparatus ◽  
Coffee Grounds

The aim of this paper was to investigate the possibility of obtaining oil from spent coffee grounds, which are left behind after the coffee is prepared, as the potential feedstock for biodiesel production. The effect of process parameters, such as are the type of solvent, the ratio of spent coffee grounds/solvent and the extraction time on oil yielded from coffee grounds was examined. The oil was obtained by maceration and extraction in the Soxhlet apparatus. The obtain results show that the spent coffee grounds could be used as an alternative raw material for biodiesel production, because it contains a significant amount of oil that can be extracted. The oil yield depends on the extraction (maceration) process parameters. The maximum oil yield obtained by the Soxhlet extraction with the n-hexane for the period of 5 h was 11.85% (the weight percentage of oil on dry mater), whereas with petroleum ether the oil yield was slightly lower and amounted to 10.44%. The yield of the oil extracted by maceration increases with the decrease of spent coffee grounds/solvent ratio from 1/3 to 1/7 g/cm3, and other parameters being constant. The oil yield increases with the duration of the maceration. Greater oil yield, ranging from 3 to 8.5%, can be obtained with n-hexane compared to the extraction with petroleum ether. Furthermore, n-hexane is less volatile and flammable, compared to petroleum ether, so it is more convenient to use.

scholarly journals Identifying bioactive phytochemicals in spent coffee grounds for cosmetic application through global metabolite analysis

2017 ◽  
Author(s):  
◽  
Jihyun Park
Keyword(s):  
Bioactive Compounds ◽  
Raw Materials ◽  
Costa Rican ◽  
Raw Material ◽  
Spent Coffee Grounds ◽  
Metabolite Analysis ◽  
Coffee Grounds ◽  
Chemical Profiles ◽  
Anti Oxidant ◽  
Anti Inflammatory

Annually, more than 6 million tons of spent coffee grounds (SCG) are generated worldwide. The present study explores the possible use of spent coffee grounds as the raw materials for cosmetics industry. The main objective of this project are to investigate the chemical profiles and identify the bioactive compounds for cosmetics application through global metabolite analysis. The compounds extracted from SCG of Ethiopia coffee (Yirgacheffe), Costa Rican coffee (Tarrazu) and Hawaiian coffee (Kona) were analyzed by ultra-high pressure liquid chromatography coupled with mass spectrometry (UPLC-MS). The ion chromatograms were submitted to XCMS platform operated by Center for Metabolomics at the Scripps Research Institute. The peak detection, peak grouping, spectra extraction, and retention alignment were processed by XCMS. The spectra were annotated and the compounds were identified and categorized by integration with METLIN, the world's largest metabolite database. Multivariate and univariate statistical analysis including PCA and cloud-plot were performed by XCMS to compare the chemical profiles between the three coffee cultivars. These analyses indicated that each cultivar showed a specific cluster. Over 200 compounds related to anti-oxidant, anti-inflammatory, anti-tyrosinase and anti-tumor for skin care application were identified by XCMS. Therefore, the presence of bioactive compounds in SCG makes it a potential source of raw material for cosmetic application (e.g., anti-oxidant, anti-inflammatory, skin-whiting, and anti-aging).

Potential biodiesel production from Brazilian plant oils and spent coffee grounds by Beauveria bassiana lipase 1 expressed in Aspergillus nidulans A773 using different agroindustry inputs

2020 ◽  
Vol 256 ◽  
pp. 120513 ◽  
Author(s):  
Enrico Cerioni Spiropulos Gonçalves ◽  
Malena Martínez Pérez ◽  
Ana Claudia Vici ◽  
Jose Carlos Santos Salgado ◽  
Mariana de Souza Rocha ◽  
...  
Keyword(s):  
Aspergillus Nidulans ◽  
Beauveria Bassiana ◽  
Biodiesel Production ◽  
Plant Oils ◽  
Spent Coffee Grounds ◽  
Coffee Grounds

Biodiesel production by direct transesterification of wet spent coffee grounds using switchable solvent as a catalyst and solvent

2020 ◽  
Vol 296 ◽  
pp. 122334 ◽  
Author(s):  
Hoang Chinh Nguyen ◽  
My Linh Nguyen ◽  
Fu-Ming Wang ◽  
Horng-Yi Juan ◽  
Chia-Hung Su
Keyword(s):  
Biodiesel Production ◽  
Spent Coffee Grounds ◽  
Direct Transesterification ◽  
Coffee Grounds

scholarly journals Biodiesel Production from Spent Coffee Grounds

2017 ◽  
Vol 25 (40) ◽  
pp. 113-121 ◽  
Author(s):  
Lenka Blinová ◽  
Alica Bartošová ◽  
Maroš Sirotiak
Keyword(s):  
Organic Solvents ◽  
Oil Extraction ◽  
Waste Material ◽  
Biodiesel Production ◽  
Spent Coffee Grounds ◽  
Drying Oil ◽  
Biodiesel Feedstock ◽  
Coffee Grounds ◽  
Coffee Oil

Abstract The residue after brewing the spent coffee grounds is an oil-containing waste material having a potential of being used as biodiesel feedstock. Biodiesel production from the waste coffee grounds oil involves collection and transportation of coffee residue, drying, oil extraction, and finally production of biodiesel. Different methods of oil extraction with organic solvents under different conditions show significant differences in the extraction yields. In the manufacturing of biodiesel from coffee oil, the level of reaction completion strongly depends on the quality of the feedstock oil. This paper presents an overview of oil extraction and a method of biodiesel production from spent coffee grounds.

scholarly journals Using biochar from spent coffee grounds to treat pollution in livestock wastewater

2020 ◽  
Vol 61 (5) ◽  
pp. 135-144
Author(s):  
Huong Thu Thi Tran ◽  
Tong Xuan Nguyen ◽  
Yen Hai Thi Trinh ◽  
Hang Thi To ◽  
Huyen Thanh Thi Dang ◽  
...  
Keyword(s):  
Interplanar Spacing ◽  
Reaction Times ◽  
Raw Material ◽  
Lattice Plane ◽  
Treatment Efficiency ◽  
Spent Coffee Grounds ◽  
Technical Regulation ◽  
Livestock Wastewater ◽  
Coffee Grounds ◽  
Material Sample

Four types of biochar material synthesized from spent coffee grounds by slow pyrolysis process CF1 (500(C/0.5h); CF2 (500(C/1.5h); CF3 (500(C/3h); CF4 (500(C/6h) is studied to treat two pollution parameters (COD and TSS) in livestock wastewater. Material characteristics were determined by SEM, EDX and BET methods. The results showed that the 4 samples of biochar materials were structured fiber clearly, the interplanar spacing which corresponds to the lattice plane. The C content in the biochar sample is higher than the initial raw material sample; the highest value recorded reaches 90.61% C (CF2). 100 mL of the original livestock waster water is filtered through columns with 4g of biochar CF1-CF4 during reaction times varied from 0h, 1h, 4h and 8h, the COD treatment efficiency and adsorption content of CF4 sample is highest of 96.41% and 188 mg/g after 8h, and the lowest value is 76.67% and 149.5 mg/g after 1h recorded in CF3 sample, however the COD value after treatment is still higher from 1.2 to 1.46 times than Vietnamese standard 62: 2016/MONRE - national technical regulation on the effluent of livestock. The CF3 material samples have the highest TSS treatment efficiency and adsorption content of 95.19% and 6.425 mg/g after 8h and the lowest of 66.78% and 4.575 mg/g recorded in CF1 samples after 1h, response the requirements of QCVN 62: 2016/MONRE. The results showed that biochar is a potential sorbent to removed pollutants from waste water.

scholarly journals Biodiesel Production from Spent Coffee Grounds Oil

2022 ◽  
Author(s):  
Chelselyn Chuaca ◽  
Elza Karenina ◽  
Kezia Yusuf ◽  
Shafwah Dzahabiyya ◽  
Alwan Raihan ◽  
...  
Keyword(s):  
Biodiesel Production ◽  
Spent Coffee Grounds ◽  
Coffee Grounds
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