Article
Chemistry, Multidisciplinary
Amit Kumar Singh, Tarini Basireddy, Jeffrey L. Moran
Summary: Water pollutants, such as oil spills, industrial dyes, and microplastics, pose threats to public health and aquatic ecosystems. Traditional water purification methods face challenges in removing these contaminants. This study presents a facile method for synthesizing magnetic microrobots derived from spent coffee ground to remove oil, organic dyes, and microplastic pollution from contaminated seawater. The CoffeeBots hold potential as sustainable, recyclable, and low-cost remediation agents for water treatment.
Article
Materials Science, Composites
Vy H. T. Nguyen, M. N. Prabhakar, Dong-Woo Lee, Jung-il Song
Summary: This study investigates the functional properties of bioplastic blends prepared through hot compressing molding of thermoplastic starch and spent coffee grounds. The study found that the addition of spent coffee grounds improves the optical, antioxidant, and thermal properties of the bioplastic blends without compromising their mechanical performance.
POLYMER COMPOSITES
(2022)
Review
Food Science & Technology
Massimiliano Errico, Jose A. P. Coelho, Roumiana P. Stateva, Knud V. Christensen, Rime Bahij, Stefania Tronci
Summary: This paper explores the transformation of biowastes from food industry and agriculture into high-value products through four examples. The goal is to provide insight into the principles of green transition and a circular economy. The study thoroughly analyzes different extraction methods, with a particular emphasis on cutting-edge green technologies. The objective is to promote the sustainable utilization of biowaste and support the green transition to a more environmentally conscious economy.
Article
Agricultural Engineering
Ales Hanc, Tereza Hrebeckova, Alena Grasserova, Tomas Cajthaml
Summary: The study focused on vermicomposting of spent coffee grounds (SCG) and its mixtures with straw pellets, evaluating the biological and physico-chemical properties of the process. The treatment with 25% vol. SCG + 75% vol. straw pellets showed the highest number and biomass of earthworms. Earthworm weight decreased as layer age increased, with the oldest treatment layer having suitable agrochemical properties. Earthworms were effective in reducing caffeine stimulant content during the vermicomposting process.
BIORESOURCE TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Vuyokazi Zungu, Lungile Hadebe, Philani Mpungose, Izzeldin Hamza, James Amaku, Bhekumuzi Gumbi
Summary: This study successfully produced biochar from biowaste coffee grounds through pyrolysis and found that it has a strong adsorption capacity for pharmaceuticals in water. These results indicate that biochar can serve as an effective adsorbent to enhance the removal of emerging contaminants from wastewater.
Article
Chemistry, Multidisciplinary
Hyeok-Jin Kim, Sea-Cheon Oh
Summary: The study showed that hydrothermal carbonization with subcritical water can improve the fuel characteristics of spent coffee grounds, increasing fixed carbon content and heating value, making the fuel characteristics similar to coal as the reaction temperature increases.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Environmental
Alberto Adan-Mas, Lorena Alcaraz, Pablo Arevalo-Cid, Felix. A. Lopez-Gomez, Fatima Montemor
Summary: The electrochemical energy storage performance of activated carbons derived from coffee biowastes were evaluated, showing promising potential for supercapacitor applications.
Article
Engineering, Chemical
Xi-Er Chen, Dave Mangindaan, Hsiu-Wen Chien
Summary: This study discovered that spent coffee grounds (SCG) possess photothermal properties under near-infrared laser irradiation, making them suitable for applications as photothermal materials. Additionally, when incorporated into polyNIPAM hydrogels, SCGs can induce thermal shrinkage and bending, indicating their potential as photothermal actuators. These findings provide new insights for the recycling and reuse of SCGs.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Materials Science, Multidisciplinary
Victoria Bejenari, Alexandra Marcu, Alina-Mirela Ipate, Daniela Rusu, Nita Tudorachi, Ion Anghel, Ioana-Emilia Sofran, Gabriela Lisa
Summary: The study demonstrates that firelighters containing coffee grounds have superior combustion performance and can serve as an alternative utilization method. Additionally, these firelighters produce less residue and have a longer burning time.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Environmental
Anass Oulkhir, Karim Lyamlouli, Mohammed Danouche, Rachid Benhida
Summary: This research investigated the utilization of Chenopodium quinoa pericarp bio-waste as a biosorbent to remove methylene blue dye from aqueous solution. The modified biosorbent showed high efficiency in removing the dye. The study also found that the biosorption followed the pseudo-second-order kinetics and Langmuir isotherm. The findings suggest that the Chenopodium quinoa pericarp waste has great potential as an environmentally friendly biosorbent.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
J. Rajesh Banu, R. Yukesh Kannah, M. Dinesh Kumar, Preethi, S. Kavitha, M. Gunasekaran, Guangyin Zhen, Mukesh Kumar Awasthi, Gopalakrishnan Kumar
Summary: Coffee consumption leads to the generation of large amounts of spent coffee grounds (SCG), which contains various valuable components. Valorisation of SCG through integrated biorefinery approach not only brings more valuable products, but also enhances environmental sustainability and economic benefits. The future perspective of SCG biorefinery shows the potential for higher production of bioactive compounds and bioenergy, contributing to the development of a circular bioeconomy.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Review
Engineering, Environmental
Coralia V. Garcia, Young-Teck Kim
Summary: Coffee waste, including spent coffee grounds and coffee silverskin, contains valuable substances like oils, polyphenols, and caffeine, but is mostly discarded by the industry. These wastes show potential for producing biocomposites, but chemical modification is often necessary. Extracted oils from spent coffee grounds can be cultured with bacteria for producing biopolymers.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Chemistry, Applied
Everton Ribeiro, Thais de Souza Rocha, Sandra Helena Prudencio
Summary: Protein extracts from green and roasted coffee beans, as well as spent coffee grounds, were evaluated for bioactive peptides. In silico analysis showed high occurrence of dipeptidyl peptidase-IV (DPP-IV) and angiotensin I-converting enzyme (ACE) inhibitor peptides in the 11S coffee globulin, which could be released after digestion. In vitro digestion revealed that green bean and spent coffee ground proteins were more susceptible to proteolysis, releasing small peptides with high anti-hypertensive potentials.
Article
Agronomy
Min-Sueng Kim, Sang-Ho Kim, Minsoo Jeong, Min-Kyu Park, YoungJae Jo, GI-Ung Kang, Da-Ryung Jung, Chang-Il Lee, Jae-Ho Shin
Summary: The study investigated the use of fermented coffee grounds to control odors in a dairy cow barn, showing a significant reduction in odor compounds and an increase in rare microbial families. Furthermore, network analysis revealed potential odor-reducing bacterial families present in fermented coffee grounds.
Review
Green & Sustainable Science & Technology
Mohammad Saberian, Jie Li, Anita Donnoli, Ethan Bonderenko, Paolo Oliva, Bailey Gill, Simon Lockrey, Rafat Siddique
Summary: Through literature review, it can be concluded that SCGs have the potential to be used as aggregates in construction materials across a wide range of civil engineering applications. However, further comprehensive studies are needed in this specific area due to limited research and lack of evidence of successful practical applications.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Pei-Ling Yen, Chun Ming How, Vivian Hsiu-Chuan Liao
Summary: The study found that early-life and chronic exposure to DEHP may increase the toxicity of A beta in C. elegans, which may be associated with the autophagy-lysosomal degradation pathway.
Article
Environmental Sciences
Mei-Lun Huang, Pei-Ling Yen, Vivian Hsiu-Chuan Liao
Summary: The study evaluated the feasibility of using acidophilic sulfur-oxidizing bacterium SV5 and untreated coffee ground for the remediation of Cd-contaminated sediment, and found that coffee ground exhibited high adsorption efficiency for Cd(II).
Article
Environmental Sciences
Chi-Wei Huang, Wan-Ru Liao, Chun Ming How, Pei-Ling Yen, Chia-Cheng Wei
Summary: The study found that ZEN significantly decreased locomotive behaviors in C. elegans. Lifespan and aging markers were also adversely affected by ZEN, which increased ROS levels and downregulated antioxidant genes. Long-term exposure to ZEN induced aging-related decline in C. elegans, associated with oxidative stress and inhibition of antioxidant defense.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Pei -Ling Yen, Cai-Ru Yang, Mei-Lun Huang, Ting -An Lin, Vivian Hsiu-Chuan Liao
Summary: This study aims to evaluate the effects of chronic DEHP exposure on innate immunosenescence in C. elegans. The length of the exposure period significantly impacts DEHP-induced age-related declines, which is linked to immunosenescence and oxidative stress. DEHP exposure increases the expression of riok-1, a human RIO kinase homolog, which is associated with DEHP-induced HLH-30/TFEB translocation.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2023)