Marcia R. Silva, Yiming Yang, Kwendo Mwaniki

Journal of Sustainable Bioenergy Systems • 2022

The Microbial Fuel Cell (MFC) is a bioelectrical system that can convert chemical energy into electrical energy. The anode plays an important role in the improvement of power generation. Zeolite and carbon-based materials were coated in graphene felt anode in this study for proof of concept that the modified material could enhance power generation. Preliminary results showed that the maximum power density with the modified material was 2 - 2.5 times higher than the unmodified material using RAS as a substrate and 1.4 times higher using algae as a substrate in our single chamber model, whereas the dual-chamber model displayed a maximum power density of the modified material to be roughly 3 - 4 times higher than in the unmodified microbial fuel cell.

Shuai Luo, Lucas John Waller, Brian D. Badgley et al.

The Science of The Total Environment • 2020

Saroj Sharma, Amit Bhattacharya

Applied Water Science • 2016

Water is of fundamental importance for life on earth. The synthesis and structure of cell constituents and transport of nutrients into the cells as well as body metabolism depend on water. The contaminations present in water disturb the spontaneity of the mechanism and result in long/short-term diseases. The probable contaminations and their possible routes are discussed in the present review. Continued research efforts result in some processes/technologies to remove the contaminations from water. The review includes concepts and potentialities of the technologies in a comprehensible form. It also includes some meaningful hybrid technologies and promising awaited technologies in coming years.

Hassan Mohammadi Khalfbadam, Ka Yu Cheng, Ranjan Sarukkalige et al.

Bioresource Technology • 2016

Swati Das, Akash Tripathi, Makarand M. Ghangrekar

Chemosphere • 2024

Akanksha Mishra, Meenu Chhabra

Bioresource Technology Reports • 2022

Devu Pengadeth, Sneha Prakash Naik, Aswin Sasi et al.

Chemical Engineering Journal • 2024

Wiktoria Rajewicz, Donato Romano, Joshua Cherian Varughese et al.

Biological Cybernetics • 2021

Facing the threat of rapidly worsening water quality, there is an urgent need to develop novel approaches of monitoring its global supplies and early detection of environmental fluctuations. Global warming, urban growth and other factors have threatened not only the freshwater supply but also the well-being of many species inhabiting it. Traditionally, laboratory-based studies can be both time and money consuming and so, the development of a real-time, continuous monitoring method has proven necessary. The use of autonomous, self-actualizing entities became an efficient way of monitoring the environment. The Microbial Fuel Cells (MFC) will be investigated as an alternative energy source to allow for these entities to self-actualize. This concept has been improved with the use of various lifeforms in the role of biosensors in a structure called "biohybrid" which we aim to develop further within the framework of project Robocoenosis relying on animal-robot interaction. We introduce a novel concept of a fully autonomous biohybrid agent with various lifeforms in the role of biosensors. Herein, we identify most promising organisms in the context of underwater robotics, among others Dreissena polymorpha, Anodonta cygnaea, Daphnia sp. and various algae. Special focus is placed on the "ecosystem hacking" based on their interaction with the electronic parts. This project uses Austrian lakes of various trophic levels (Millstättersee, Hallstättersee and Neusiedlersee) as case studies and as a "proof of concept".

Jiunian Guan, Xu Cao, Yuan Yuan et al.

Chemical Engineering Journal • 2023

Allison Z. Werner, Corey D. Broeckling, Ashok Prasad et al.

The Plant Journal • 2019

Cyanobacteria are a model photoautotroph and a chassis for the sustainable production of fuels and chemicals. Knowledge of photoautotrophic metabolism in the natural environment of day/night cycles is lacking, yet has implications for improved yield from plants, algae and cyanobacteria. Here, a thorough approach to characterizing diverse metabolites-including carbohydrates, lipids, amino acids, pigments, cofactors, nucleic acids and polysaccharides-in the model cyanobacterium Synechocystis sp. PCC 6803 (S. 6803) under sinusoidal diurnal light:dark cycles was developed and applied. A custom photobioreactor and multi-platform mass spectrometry workflow enabled metabolite profiling every 30-120 min across a 24-h diurnal sinusoidal LD ('sinLD') cycle peaking at 1600 μmol photons m -2 sec -1 . We report widespread oscillations across the sinLD cycle with 90%, 94% and 40% of the identified polar/semi-polar, non-polar and polymeric metabolites displaying statistically significant oscillations, respectively. Microbial growth displayed distinct lag, biomass accumulation and cell division phases of growth. During the lag phase, amino acids and nucleic acids accumulated to high levels per cell followed by decreased levels during the biomass accumulation phase, presumably due to protein and DNA synthesis. Insoluble carbohydrates displayed sharp oscillations per cell at the day-to-night transition. Potential bottlenecks in central carbon metabolism are highlighted. Together, this report provides a comprehensive view of photosynthetic metabolite behavior with high temporal resolution, offering insight into the impact of growth synchronization to light cycles via circadian rhythms. Incorporation into computational modeling and metabolic engineering efforts promises to improve industrially relevant strain design.

Xiao-Li Yang, Li Tao, Yang-Guang Xia et al.

International Journal of Hydrogen Energy • 2020

Rajendran Lakshmidevi, N. Nagendra Gandhi, Karuppan Muthukumar

Applied Biochemistry and Biotechnology • 2020

Rushika Patel, Purvi Zaveri, Nasreen S. Munshi

Biofuels • 2017

The growth of developing countries such as India depends on the generation of energy required for industrial and agricultural sectors, and the energy-use efficiency of their processes. In the current energy crisis it is now a major concern of governments and researchers to look for alternative and sustainable sources of energy for the future. Fuel cell technologies offer dual-purpose solutions for electricity generation and wastewater treatment. This review gives insight into the basic functioning of microbial fuel cell (MFC) technology and its current status in India. Researchers have put in efforts toward the development and optimization of single, dual and stacked fuel cells using various Gram-negative heterotrophic bacteria and marine algae. These cells are no longer restricted to lab studies; field applications are now being planned by researchers. This review looks into details of MFCs developed by research groups of India from the perspective of structure, configuration, substrate, various electrogenic bacteria and, ultimately, the output generated. This allows the reader not only to know the current status but also to understand limitations, loopholes and further scope of development in the field of MFC technology.

Minoru Wada, Yukiko Takano, Saki Nagae et al.

Journal of Oceanography • 2017

Felix Offei, Moses Mensah, Francis Kemausuor et al.

Journal of Applied Phycology • 2019

Sara Monasterio, Michele Mascia, Mirella Di Lorenzo

Separation and Purification Technology • 2017

Xavier Mayali, Ty Samo, Jeffrey A. Kimbrel et al.

Nature Communications • 2023

Bacterial remineralization of algal organic matter fuels algal growth but is rarely quantified. Consequently, we cannot currently predict whether some bacterial taxa may provide more remineralized nutrients to algae than others. Here, we quantified bacterial incorporation of algal-derived complex dissolved organic carbon and nitrogen and algal incorporation of remineralized carbon and nitrogen in fifteen bacterial co-cultures growing with the diatom Phaeodactylum tricornutum at the single-cell level using isotope tracing and nanoSIMS. We found unexpected strain-to-strain and cell-to-cell variability in net carbon and nitrogen incorporation, including non-ubiquitous complex organic nitrogen utilization and remineralization. We used these data to identify three distinct functional guilds of metabolic interactions, which we termed macromolecule remineralizers, macromolecule users, and small-molecule users, the latter exhibiting efficient growth under low carbon availability. The functional guilds were not linked to phylogeny and could not be elucidated strictly from metabolic capacity as predicted by comparative genomics, highlighting the need for direct activity-based measurements in ecological studies of microbial metabolic interactions.

Deguang Wu, Baocai Zhang, Sicheng Shi et al.

Journal of Hazardous Materials • 2023

Jae-Hoon Hwang, Hodon Ryu, Kelsey L. Rodriguez et al.

Journal of Power Sources • 2020

Abdolvahhab Fetanat, Mohsen Tayebi, Hossein Mofid

Sustainable Energy Technologies and Assessments • 2020

Jingjing Zhang, Wei Wang, Shijie You et al.

Advanced Functional Materials • 2019

Abstract Biological wastewater treatment (BWT), which is used to manage global wastewater, suffers from a sharp decrease in microbial activity at low temperature (<10 °C). Photothermal technology with a high energy efficiency theoretically exceeding 80% has the potential to activate low‐temperature BWT. However, photothermal BWT is threatened by the propagation of photosynthetic algae in wastewater under irradiation, and these microorganisms can suppress the functional bacteria or even kill anaerobic species by photosynthetically releasing oxygen. Herein, taking microbial fuel cells (MFCs) as a representative biological reactor, a photothermal Janus anode (PTJA) is designed, composed of a carbon black/polydimethylsiloxane photothermal nonporous layer and a graphite felt porous layer to promote low‐temperature BWT. Unlike traditional symmetrical porous anodes, the nonporous layer of the PTJA can isolate the wastewater in the porous layer from light irradiation during photothermal conversion, thus preventing photosynthetic algae from poisoning anaerobic functional microbes. Under ≈1 sun illumination, the PTJA MFC exhibits 1.6 and 24.2 times higher organic pollutant removal rate and power density generation, respectively, than MFCs using traditional anodes for low‐temperature BWT (7.0 ± 2.0 °C). This development can allow novel utilization of solar energy and is a promising resolution for low‐temperature BWT.

Sanath Kondaveeti, Gunda Mohanakrishna, Raviteja Pagolu et al.

Indian Journal of Microbiology • 2018

Yacheng Wang, Quyet Van Le, Han‐Seung Yang et al.

Chemosphere • 2021

Nicole Longtin, Daniela A. Oliveira, Aishwarya Mahadevan et al.

Journal of Power Sources • 2020

Ainara Domínguez‐Garay, Abraham Esteve‐Núñez

Bioelectrochemistry • 2018

Haiquan Zhan, Hong Wang, Yanzeng Li et al.

Water • 2026

Photosynthetic algae–microbial fuel cells (PAMFCs) are attractive for energy-positive wastewater treatment and carbon mitigation. However, PAMFC performance under continuous flow is often constrained by limited cathodic electron-acceptor supply and unstable photosynthetic biofilms, while the extent to which cathode interfacial engineering can stabilize diurnal power output and assimilative NH4+–N removal remains unclear. In this study, the sponge-like and petal-like ZnO0.2-NiO@rGO-modified carbon fibers (ZnO0.2-NiO@rGO-pCFs and ZnO0.2-NiO@rGO-pCFp) and pre-fabricated carbon felt (pCF) were used as cathode materials to construct three sets of PAMFC systems. Under light–dark cycling, the engineered cathodes reached steady operation within about 6.5 d and increased the steady-state voltage to approximately 0.35 V, compared with approximately 0.08 V for pCF. Under continuous-flow conditions, cathodic NH4+–N removal exhibited a stable diurnal rhythm, with higher removal during illumination at about 43–51% than in the dark at about 29–30%, consistent with algal assimilation as the primary nitrogen sink, while cathode modification mainly improved the cathodic microenvironment and response stability. Compared with pCF, the ZnO0.2–NiO@rGO cathode enriched a more even, Chlorophyta-dominated algal biofilm with an approximate relative abundance of 80%, indicating that its selective interfacial environment favors biofilm stabilization and sustains in situ oxygen production and cathodic electron-acceptor supply. Consequently, the composite cathode enhanced voltage output and stabilized light-enhanced, assimilative NH4+–N removal under aeration-free operation, while establishing an interpretable link between electrochemical performance and 18S rDNA-derived community assembly features, thereby providing a low-cost cathode design basis for nitrogen removal in wastewater treatment.

Ruma Arora Soni, K. Sudhakar, R.S. Rana

International Journal of Environment and Sustainable Development • 2016

In today's world, the prices of fossil fuels are increasing day-by-day, the availability of non-renewable fuels is depleting and pollution is causing major harm to the environment and health of living organisms. There is a crucial need for using new ecofriendly and renewable fuels. Bioenergy production from microalgae has attracted the most attention as increasing energy access and energy security are seen as key actions for reducing poverty, and access to modern energy services as electricity or liquid fuels is a basic requirement to improve living standards. Biophotovoltaics are "living solar panels" which generate electricity by capturing sunlight. They are biological electrochemical systems that function in a way similar to microbial fuel cell. Biophotovoltaics use photosynthesis of algae and moss along with light and water to generate electricity or renewable energy along with some by-products. Algae based solar panels and algae covered lily pads can play a significant role in offshore power generation. As algal cells have excess electrons being stored inside during daylight hours, biophotovoltaics power station can generate energy during the night also. This article discusses the potential of algae, moss, lotus and lily as biosubstrate for hydrogen and green electricity production.

Enrica Uggetti, Jaume Puigagut

Bioresource Technology • 2016

Dishit P. Ghumra, Chandrodai Agarkoti, Parag R. Gogate

Process Safety and Environmental Protection • 2021

Bimastyaji Surya Ramadan, Purwono Purwono

MATEC Web of Conferences • 2017

Indonesian government has committed to realize the goals of sustainable development in the field of energy as stipulated in Government Regulation Number 79/2014 on national energy policy. A feasibility study of the utilization of alternative energy is important for developing countries like Indonesia. It is expected to reduce dependence on fossil fuel use and meet the energy needs on rural areas in Indonesia. Microbial fuel cells (MFCs) is a potential source of electrical energy from waste that is rich in organic matter. Trends in research and development of Microbial Fuel Cells (MFCs) technology are increasing every year due to great opportunity to address a wide range of issues related to renewable energy needs, restoration of contaminated environment, water treatment electricity generators in remote areas and many more. MFCs can be used to treat domestic waste, biomass, algae, landfill leachate, agricultural runoff, and industrial waste. MFCs technology is a technology solution for cheap, fast, simple. MFCs use of technical challenges including low electricity production, current instability, and high internal resistance. Many challenges must be address, including a more detailed analysis in energy production, consumption, and application, understanding the relationship between the amount of electricity and contaminant removal, promoting the elimination of nutrients and optimizing system configuration and operations.

Priyanka Sarkar, Apurba Dey

Process Safety and Environmental Protection • 2020

Jiaqi Sun, Liu Lifen, Yang Fenglin

The Science of The Total Environment • 2020

Fernando G. Torres, Gabriel Enrique De-la-Torre

Sustainable Energy Technologies and Assessments • 2022

Dong Huang, Yi-Wen Yang

SSRN Electronic Journal • 2023

Matthew N. Abonyi, Christopher Chiedozie, Joseph Tagbo Nwabanne et al.

ENVIRONMENTAL SYSTEMS RESEARCH • 2024

Abstract The quest for sustainable agricultural practices has led to a surge in research focused on innovative wastewater treatment methods. This review explores the emerging biological treatment approaches designed to address the challenges of eco-friendly agricultural wastewater treatment and subsequent reuse. The investigation centers around three novel techniques: constructed wetlands, algae-based systems, and microbial fuel cells. Constructed wetlands (CWs) mimic natural processes to treat agricultural wastewater, providing habitat for various plant species that collaboratively remove contaminants. Algae-based systems(ABs) harness the photosynthetic prowess of algae to absorb nutrients and pollutants, producing biomass that can be repurposed. Meanwhile, microbial fuel cells (MFCs) employ microorganisms to break down organic matter in wastewater while generating electricity as a valuable byproduct. This review aims to provide insights into the potential of these biological treatment methods to revolutionize wastewater management in agriculture. By mitigating environmental impact, conserving water resources, and yielding reusable outputs, these techniques will offer a sustainable pathway towards addressing the pressing challenges of agricultural wastewater treatment and enhancing the overall ecological balance.

Rintu Banerjee‬‬‬‬‬‬‬‬‬, S. P. Jeevan Kumar, Ninad Mehendale et al.

Renewable and Sustainable Energy Reviews • 2018

Catherine Doan, Jules Sansonnens, Michele Morgante et al.

Sustainable Energy Technologies and Assessments • 2023

Stacked algae microbial fuel cells (AMFC) combine the strategic use of light and microbial energy to generate usable electricity. It generates oxygen directly at the electrodes, providing CO2 cycling, algal biomass, and value-added biomolecules. In this work a 12 Liter LED-Algae-Microbial-Fuel-Cell-Stack with maximum power tracking was investigated for voltage balancing and reversal resolution, enabling up to 1200 mV stable stack voltage under closed circuit conditions. The experiment was run in a municipal wastewater treatment plant for 152 days. A new type of data control computer device was used to block voltage reversals and maintaining power with unit resistances between 42 and 99 Ohm. It also allowed the detection of previously unreported light starvation effects in 16 process variants with voltage drops ranging from 14 to 240 mV switching off lights. Algae generated an oxygen concentration of 1.9–3.7 mg/L during power generation. Extending all light-on conditions significantly reduced the voltage reversal frequency. All light-on in combination with assisted oxygenation using 0.25 L/min air bubbling per unit resolved voltage reversals and balanced the AMFC-Stack. The results obtained are relevant to the study of stacked bioelectric systems that use low substrate concentrations and yet aim to generate stable power and minimize voltage reversals.

Haiyan Pei, Zhigang Yang, Changliang Nie et al.

Bioresource Technology • 2018

Dong Huang, Xin Yan

Renewable Energy • 2025

Magdalini Tsarpali, Neha Arora, John N. Kuhn et al.

Algal Research • 2021