scispace - formally typeset
Search or ask a question

Why caffeine degradation using microbial fuel cells is to be studied? 


Best insight from top research papers

The study of caffeine degradation using microbial fuel cells is crucial due to the environmental threat posed by coffee wastewater containing caffeine. Caffeine, a common pollutant in coffee industry effluents, hinders complete wastewater treatment. Microbial fuel cells offer a sustainable solution by utilizing caffeine as a fuel source for electricity generation while degrading it effectively. Research indicates that operational parameters such as organic substrate loading concentration, initial caffeine concentration, and circuit connection significantly impact the efficiency of caffeine removal in microbial fuel cells. Moreover, the ability of microbial communities in wastewater from coffee processing to degrade caffeine and generate electrical energy demonstrates the potential of bioelectrochemical systems for agricultural waste treatment. Studying caffeine degradation in microbial fuel cells not only aids in environmental protection but also explores the potential for sustainable energy generation from organic pollutants.

Answers from top 5 papers

More filters
Papers (5)Insight
Caffeine degradation using microbial cells is studied due to its eco-friendly and economical nature, focusing on wastewater treatment efficiency, as shown by Pseudomonas sp. NCIM 5235 in this research.
Caffeine degradation using microbial fuel cells is studied due to its potential in treating coffee wastewater, where Pseudomonas sp. shows promise in degrading caffeine effectively.
Caffeine degradation using microbial fuel cells is studied to optimize removal efficiency and power generation by evaluating operational parameters like substrate concentration, initial caffeine levels, and external resistance.
Caffeine degradation using microbial fuel cells is studied for bioelectricity generation, high decaffeination efficiency, COD removal, toxicity reduction, and elucidating the degradation pathway in wastewater treatment.
Studying caffeine degradation using microbial fuel cells is crucial for efficient organic matter removal from industrial coffee wastewater, enhancing treatment processes and energy generation.

Related Questions

What are the specific secondary metabolites produced by bacterial cells during the degradation of cell polymers?5 answersDuring the degradation of cell polymers, bacterial cells produce specific secondary metabolites such as polyhydroxyalkanoates (PHAs) and alginate. PHAs, including poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), are produced by various bacterial isolates like Azotobacter chroococcum, Azospirillum lipoferum, and Alcaligenes eutrophus. Additionally, alginate is another secondary metabolite observed during the degradation of polysaccharides like alginate by marine bacterium Vibrio cyclitrophicus ZF270. This bacterium grows on alginate, forming large groups that cooperatively break down the polymer, and exposure to digested alginate triggers motility and dispersal from cell groups towards new polysaccharide hotspots. These secondary metabolites play crucial roles in the degradation and utilization of cell polymers by bacterial cells.
Does caffeine have negative effect on the environment?5 answersCaffeine does have negative effects on the environment. It is a common pollutant found in natural water resources due to domestic waste from caffeinated drinks and chocolates. Caffeine's presence in water bodies, including agricultural soil, has increased due to its widespread consumption, impacting flora, fauna, and human health. Studies highlight the need for urgent attention to remove caffeine and its derivatives from the environment. Bioremediation using materials like chitosan and alginate hydrogel beads shows promise in eliminating caffeine from aqueous solutions, with factors like pH and salinity affecting the adsorption process. The global assessment of stimulant production, including caffeine, reveals significant resource use implications, emphasizing the environmental burden associated with stimulant cultivation and consumption.
What is the potential of microbial fuel cell in wastewater treatment and power generation?5 answersMicrobial fuel cells (MFCs) have significant potential in wastewater treatment and power generation. MFCs can convert organic wastes into bioelectricity through electrochemical reactions, leading to energy savings and decreased sludge production. MFCs can generate bioelectricity from wastewater by harnessing the metabolic activity of microorganisms, while also removing pollutants and producing clean water as a byproduct. Different types of MFCs, such as algal-based MFCs and plant-based MFCs, offer variations in design and function, allowing for indoor or outdoor implementation and the use of solar power. MFCs in wastewater treatment plants can increase sustainability by improving energy efficiency, reducing operational costs, and decreasing greenhouse gas emissions. Despite some challenges, such as cost-effectiveness and continuous bioelectricity generation, MFCs hold great promise for generating bioelectricity from natural wastes and wastewater, contributing to a cleaner and more environmentally friendly ecosystem.
Performance of Yeast Microbial Fuel Cell Integrated with Sugarcane Bagasse Fermentation for COD Reduction and Electricity Generation?5 answersThe integration of yeast microbial fuel cell (MFC) with sugarcane bagasse fermentation has shown promising results in terms of COD reduction and electricity generation. In one study, the MFC system incorporated with fermentation using sugarcane bagasse extract as a substrate resulted in an average COD removal of 39.68% per cycle and a maximum power generation of 14.88 mW/m2. Another study demonstrated that the addition of the co-biocatalyst glucose oxidase (GOx) enzyme significantly enhanced the performance of the yeast MFC, with a maximum power density of 146.65 mW/m2 and a COD reduction of 75%. Additionally, the integration of MFC with dark fermentation using cane molasses as a substrate resulted in a power output of 3.02 W/m3 and reductions in COD and total carbohydrates of about 85% and 88% respectively. These findings suggest that the integration of yeast MFC with sugarcane bagasse fermentation can effectively reduce COD and generate electricity.
What are the conditions that favor the degradation of ibuprofen by bacteria?4 answersThe conditions that favor the degradation of ibuprofen by bacteria include pH, temperature, and the presence of specific bacterial strains. Optimum pH conditions for the growth of Citrobacter freundii strain PYI-2 and Citrobacter portucalensis strain YPI-2 were found to be 6.9 and 5.8, respectively. The optimum temperature for the degradation of ibuprofen by these strains was 42°C and 32°C, respectively. Another study found that the optimum conditions for ibuprofen degradation by a selected bacterial strain were a dextrose and peptone concentration of 1.5% (w/v), an inoculum size of 2% (w/v), pH 7, and incubation at 25 °C and 150 rpm. These conditions resulted in a degradation rate of more than 78% in terms of chemical oxygen demand (COD) removal. Therefore, the degradation of ibuprofen by bacteria is favored under specific pH, temperature, and nutrient conditions.
What are the negative effects of the caffeine came from coffee?4 answersCaffeine from coffee can have negative effects on health. High doses of caffeine can lead to anxiety, insomnia, restlessness, and tachycardia. Caffeine can also induce insulin resistance, which can disrupt glucose homeostasis. Additionally, long-term consumption of caffeine can suppress energy metabolism and lead to adrenal fatigue. It can also reduce blood flow to the brain, causing headaches, dizziness, and reduced fine motor coordination. Pregnant and post-menopausal women are advised to limit their caffeine intake. Vulnerable populations, such as children, adolescents, and individuals with underlying health conditions, may experience impairments in cardiovascular function, sleep, and substance use due to caffeine consumption.

See what other people are reading

Is boron coming from sewage?
5 answers
Yes, boron is indeed present in sewage. Research indicates that boron can be found in sewage waste contamination, with concentrations varying depending on the source. Studies have focused on the spatial distribution of boron in aquifers subjected to sewage waste disposal, showing that boron concentrations in groundwater samples near sewage disposal facilities can range from 3.70 to 44.98 mg/L. Additionally, isotopic analysis of boron in partially clarified liquid from septic tanks has revealed a distinguishable δ11B signature, with an average of 96 µg L−1 total boron in residential septic tanks. Furthermore, methods for reclaiming boron from wastewater, such as chemical oxo-precipitation, have been explored, demonstrating the presence of boron in sewage-derived sludge.
What are the biological methods of biological waste water treatment plant?
5 answers
Biological methods in a biological waste water treatment plant include various approaches such as efficient biological treatment to remove organic nitrogen, promoting granulation of microbial sludge in an oxygen-free treatment step, accelerating the rate of an oxygen-free sulfur oxidation reaction without continuous addition of substances, utilizing denitrifying sulfur oxidation bacteria under specific conditions, employing aeration columns and tray aerators for oxygenation and automatic control systems for oxygen content regulation, and implementing a deep biological treatment method involving aerobic reactions and recirculation of water through a bioreactor. These methods collectively aim to enhance the treatment efficiency, improve dewaterability, accelerate reactions, and ensure high-quality treated water output.
How do coastal circulations impact the transport of floating organisms?
5 answers
Coastal circulations play a crucial role in influencing the transport of floating organisms in marine environments. These circulations, driven by factors like tides, winds, and density gradients, can facilitate the dispersion of organisms introduced through ballast water or river discharges. Buoyant coastal currents, formed by fresh river inputs, can flow along the coast for long distances, carrying pollutants, nutrients, and marine organisms. Additionally, estuary-type circulations contribute to the accumulation of suspended matter and organic material near the coast, affecting nutrient gradients and organic matter fluxes. Understanding these circulation patterns is essential for predicting the spread of floating organisms, guiding management strategies, and monitoring coastal ecosystems. By utilizing numerical models and in-situ observations, researchers can track the movement of these organisms and assess their impact on coastal regions.
What is Convenient sampling?
5 answers
Convenient sampling refers to a method commonly used in social science research. It involves selecting participants based on their easy accessibility and proximity to the researcher, rather than through random selection. Various convenient sampling devices have been developed for different purposes. For instance, there are convenient-to-use sampling equipment for industrial sewage treatment, a convenient concrete sampling device for concrete detection, and a convenient-to-move soil sampling device for water conservancy construction exploration. Additionally, there are convenient sampling devices specifically designed for sampling petroleum pipelines, featuring components like electromagnetic valves and sliding rods for quick and efficient sampling processes. These devices aim to simplify the sampling process, making it easier and more convenient for researchers or workers to collect samples for analysis.
What is bioaccumulation and what is the mechanism?
5 answers
Bioaccumulation refers to the process where organisms absorb chemicals from their environment and diet, which then accumulate in their tissues, potentially leading to toxic effects. This phenomenon plays a crucial role in ecotoxicology by determining the maximum concentration of chemicals in an organism's tissues relative to exposure levels, influencing toxicity levels. Bioaccumulation can occur through various mechanisms like biosorption, bioaccumulation, and biotransformation, where pollutants are either accumulated by living biomass or transformed into nonpolluting products. Microorganisms such as algae, fungi, bacteria, and plants play a significant role in bioaccumulation and detoxification of heavy metals from the environment, utilizing genetic engineering and bioinformatics to enhance efficiency. Understanding bioaccumulation is essential for assessing risks associated with chemical presence in the environment and developing strategies for control and mitigation.
How to extracting eggshells?
4 answers
Eggshells can be extracted using various methods outlined in the research papers. One method involves cleaning the eggshell surface, obtaining eggshell powder, mixing it with water and lysate, conducting demineralization with acetic acid, and separating the organic matrices. Another approach includes enzymolysis, fermentation, and extraction to prepare organic calcium from eggshells, achieving a high extraction rate and calcium content. Additionally, extracting lysozyme from eggshells involves soaking in sodium chloride solution, adjusting pH, conducting extraction, and precipitating lysozyme crystals. Different methods exist for extracting various components from eggshells, each tailored to the specific target compound and desired outcome.
What are the potential applications of stainless steel electrodes modified with C-based nanolayers and transition metal catalysts,?
5 answers
Stainless steel electrodes modified with C-based nanolayers and transition metal catalysts show promise in various applications. These modifications enhance electrocatalytic activities for reactions like the oxygen evolution reaction (OER). The incorporation of materials like Ni-CeOx and NixFe oxyhydroxides on stainless steel substrates significantly improves OER performance, reducing overpotentials and enhancing stability. Additionally, surface modifications with conducting composites like PDMS doped with carbon nanofibers enhance interfacial electron transfer, biocompatibility, and corrosion resistance, making them suitable for microbial fuel cell (MFC) applications. These advancements highlight the versatility of stainless steel electrodes modified with C-based nanolayers and transition metal catalysts in energy conversion technologies, including water splitting and microbial fuel cells.
What are the different vermicomposting techniques?
5 answers
Vermicomposting techniques encompass various methods for converting organic waste into valuable fertilizer. Earthworms, particularly species like Eisenia fetida, play a crucial role in this process. Techniques include utilizing different organic waste sources such as agricultural crops, animal manure, and biochar. The combined action of earthworms and microbes mineralizes organic waste, transforming it into nutrient-rich vermicompost. Vermicomposting not only enhances soil fertility but also aids in waste management, offering a sustainable solution for agricultural and environmental sustainability. Additionally, vermicompost can be used as a bioremediation technique, promoting soil biodiversity and plant growth while minimizing yield loss. Integrating vermicomposting with other techniques like soilless culture systems can further enhance resource use efficiency and food production.
How shrinkage of organic deposites lead to land subsidence?
5 answers
Shrinkage of organic deposits contributes significantly to land subsidence by causing compression and consolidation of sediments. This shrinkage is often induced by factors like oxidation and organic matter mineralization. When organic sediments undergo shrinkage, they lose volume, leading to a decrease in the overall elevation of the land surface. Studies have shown that the major part of subsidence in areas like peatlands can be attributed to shrinkage of dredged sediments, with minimal changes in organic matter content. Additionally, the type of organic matter in these sediments can evolve from humification to mineralization, influencing the subsidence process. Therefore, understanding and managing the shrinkage of organic deposits is crucial in addressing and potentially reversing land subsidence issues in various regions.
How much of BG11 media is used per liter?
5 answers
The amount of BG11 medium used per liter varies depending on the specific experiment and the desired outcome. In the research on Scenedesmus quadricauda, the original BG11+ medium contained 1.10 gL−1 biomass, 161 μg mL−1 carbohydrate, and 28% (w/w) lipid, while the RSM-optimized medium had 1.94 gL−1 biomass, 450 μg mL−1 carbohydrate, and 48% (w/w) lipid. In the study on Chlorella vulgaris, a mixture of 25% BG11 and 75% sludge extract was used to achieve a maximum biomass of 1.404 g/L. Additionally, in the investigation of Chlamydopodium fusiforme, cultures grown in BG11 reached a cell dry weight of 1.94 ± 0.1 g L−1. Therefore, the amount of BG11 medium used per liter can range from 25% to full strength, depending on the specific experimental conditions and objectives.
What is the major pathway of carbon into soils?
5 answers
The major pathway of carbon into soils involves a complex interplay of plant traits, microbial activity, and soil aggregation processes. Plant root traits, such as root diameter and hemicellulose content, influence carbon accumulation in different soil pools, with microbial activity playing a crucial role in mediating this process. Soil aggregation processes, including the formation of macroaggregates and interactions between particulate organic matter (POM) and mineral particles, contribute significantly to carbon stabilization in soils. Additionally, the formation of mineral-associated organic matter (MAOM) is influenced by the spatial distribution of plant carbon sources and microbial abundance, with microbial turnover pathways and direct sorption to mineral surfaces playing key roles in MAOM dynamics. Overall, the intricate relationships between plant inputs, microbial processes, and soil aggregation mechanisms shape the major pathway of carbon into soils.