Article
Engineering, Multidisciplinary
Ilkcan Coskun, Serhat Ikizoglu
Summary: The study investigates the possibility of using the open-area test site (OATS) of Turkish Standard Institution (TSE) for antenna calibrations, finding that despite physical size limitations, the site can be used for calibrations according to ANSI-C63.5-2006. The conclusion is that one should not expect near-ideal conditions when starting the calibration process.
Article
Engineering, Civil
Marc Fina, Celine Lauff, Matthias G. R. Faes, Marcos A. Valdebenito, Werner Wagner, Steffen Freitag
Summary: This paper proposes a framework to calculate the bounds on failure probability of linear structural systems affected by random and interval variables. The framework uses the maximum standard deviation of the structural response as a proxy for detecting the crisp values of interval parameters and obtaining failure probability bounds. The proposed approach is applicable to linear structural systems with aleatoric and epistemic uncertainty and Gaussian loading.
Article
Computer Science, Information Systems
Petra Groselj, Gregor Dolinar
Summary: This study presents a new group analytic hierarchy process (AHP) framework called GSD-IJ, which emphasizes group satisfaction with the final decision. GSD-IJ uses geometric mean and geometric standard deviation to aggregate individual scalar valued judgments into interval group judgments. The width of the group interval judgments is controlled by the parameter k, ensuring an acceptable degree of uncertainty while maximizing the group satisfaction index.
INFORMATION SCIENCES
(2023)
Article
Chemistry, Physical
Mpumelelo T. Matsena, Buyisile Kholisa, Evans M. N. Chirwa
Summary: This study assessed the key operational parameters of a hexavalent chromium reducing MFC and found that a parallel configuration has higher current and power density compared to a series configuration. The study also showed that the precipitation of Cr(III) can potentially decrease MFC performance and operating at high Cr(VI) pHs should be avoided.
JOURNAL OF POWER SOURCES
(2024)
Article
Engineering, Aerospace
Majed Swaid, Tobias Marks, Florian Linke, Volker Gollnick
Summary: The operational concept of aerodynamic formation flight, known as aircraft wake-surfing for efficiency (AWSE), has the potential for fuel savings and climate impact reduction. However, it involves technological and operational challenges. By adapting flight planning procedures to the requirements of AWSE, fuel consumption and expenses for a designated follower aircraft in a two-aircraft formation can be reduced.
Article
Environmental Sciences
Huiyang Wen, Hui Zhu, Yingying Xu, Baixing Yan, Brian Shutes, Gary Banuelos, Xinyi Wang
Summary: This study found that glucose outperformed other carbon sources in MFC-CWs, with moderate concentration (200 mg L-1) resulting in the best removal of SMX and TC. The highest removal percentages of SMX and TC were obtained in MFC-CWs with an external resistance of 700 Omega. Aeration for 12 hours was shown to improve the removal efficiency of antibiotics in MFC-CWs.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Dunzhu Li, Yunhong Shi, Zeena Wang, Fei Gao, Luming Yang, Yifan Sun, Liwen Xiao
Summary: A low-cost cylindrical cathode was developed for microbial fuel cells (MFC) to achieve a large cathode area and high operational performance. However, long-term operation revealed that excessive cathode area could lead to oxygen crossover and reduced power stability. Potential controlling methods were proposed to address this issue.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Chemistry, Physical
Shahjalal Khandaker, Sudipto Das, Md Tofazzal Hossain, Aminul Islam, Mohammad Raza Miah, Md Rabiul Awual
Summary: Microbial Fuel Cells (MFCs) offer a sustainable solution for wastewater treatment by transforming chemical energy into electricity, providing environmental-friendly and carbon neutral wastewater treatment. Extensive research over the past few decades has significantly improved the electrochemical mechanisms of MFCs, reducing environmental pollution and fossil fuel depletion.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Chemistry, Physical
Xiangru Song, ChungHyok Jo, Lujie Han, Minghua Zhou
Summary: This review summarizes recent advances in reactor configuration and coupling technology of MFC in treating antibiotics, analyzing their characteristics in pollutant removal and power output. Comparing removal quantities, the double chamber MFC and membrane-MFC exhibit better performance in removing antibiotics.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Environmental Sciences
Hirra Zafar, Sadia Ishaq, Nicolas Peleato, Deborah Roberts
Summary: This study conducts a meta-analysis to examine the impact of design and operating factors on the performance of microbial fuel cells (MFCs). The results indicate that dual-chamber MFCs generally achieve higher COD removal and coulombic efficiencies compared to single-chamber MFCs. MFCs using a solid operating phase also show higher coulombic efficiencies than those using a liquid operating phase. Furthermore, brush anodes are found to have higher power density than flat surface anodes. The use of a platinum catalyst improves power density, while coulombic efficiency is more dependent on the presence of a membrane separator.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agricultural Engineering
Na Chu, Qinjun Liang, Wen Hao, Yong Jiang, Raymond Jianxiong Zeng
Summary: The development of low-cost biosensors for water monitoring is expected to reduce potential risks from contamination accidents. This study reported a novel micro-microbial electrochemical sensor using combined bioanode and biocathode as the sensing element. By adjusting the ratio of bioanode to biocathode, a lower power generation can be achieved with a similar or even higher toxic response. Additionally, the voltage output is affected by both flow rate and acetate concentration.
BIORESOURCE TECHNOLOGY
(2021)
Review
Environmental Sciences
Chong Xu, Shiquan Sun, Yifu Li, Yang Gao, Wei Zhang, Liu Tian, Tian Li, Qing Du, Jingju Cai, Lean Zhou
Summary: Sediment is a major source of water pollution, and its remediation is crucial for water purification. Sediment microbial fuel cells (SMFCs) have gained attention for their ability to remove organic pollutants, compete with methanogens, and recover energy. This paper provides a comprehensive review on the recent advances of SMFCs in sediment remediation, including the advantages and disadvantages of current technologies, the principles and influencing factors of SMFCs, their applications in pollutant removal and remote monitoring, and strategies for enhancing their performance in sediment bioremediation. The drawbacks of SMFCs and future development directions are also discussed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Biotechnology & Applied Microbiology
Kea-Lee Yap, Li-Ngee Ho, Soon-An Ong, Kun Guo, Yun-Ming Liew, Yoong-Sin Oon, Shen-Hui Thor, Sing-Mei Tan, Tean-Peng Teoh
Summary: A series of studies were conducted to evaluate the optimal performance of a double chambered microbial fuel cell for the treatment of caffeine. The results showed that operational parameters including organic substrate loading concentration, initial caffeine concentration, external resistance, and salinity had significant effects on the performance.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Review
Chemistry, Physical
Laszlo Kook, Nandor Nemestothy, Katalin Belafi-Bako, Peter Bakonyi
Summary: Biohydrogen production from dark fermentation is a practical pathway for scaling-up, but incomplete conversion of feedstock leaves behind process effluent with notable organic strength. The main components of dark fermentation effluents are volatile fatty acids that can be utilized by integrated applications involving microbial fuel cells (MFCs) for generating electrical energy.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Na Chu, Jiayi Cai, Zhigang Li, Yu Gao, Qinjun Liang, Wen Hao, Panpan Liu, Yong Jiang, Raymond Jianxiong Zeng
Summary: This study fabricated microbial electrochemical sensors with interdigitated electrode arrays and found that only the peak of cyclic voltammetry was highly linearly correlated with the commonly used current indicator, while the resistance from electrochemical impedance spectroscopy provided a comparable or even higher inhibition ratio. Differential pulse voltammetry did not exhibit a higher sensitivity compared to cyclic voltammetry peak. Real-time impedance analysis did not show a clear response for water biotoxicity monitoring.
Article
Electrochemistry
Yolina Hubenova, Eleonora Hubenova, Blagoy Burdin, Daria Vladikova, Mario Mitov
ELECTROCHIMICA ACTA
(2019)
Article
Chemistry, Physical
Elitsa Chorbadzhiyska, Ivo Bardarov, Yolina Hubenova, Mario Mitov
Article
Biochemistry & Molecular Biology
Yolina Hubenova, Eleonora Hubenova, Mario Mitov
BIOELECTROCHEMISTRY
(2020)
Article
Electrochemistry
Mario Mitov, Ivo Bardarov, Elitsa Chorbadzhiyska, Krassimir L. Kostov, Yolina Hubenova
Summary: The study presents the proof-of-principle of metal recovery using microbial electrochemical snorkel (MES) for the first time. Experimental comparison of MES setups with and without proton exchange membrane (PEM) isolation and MFC revealed that MES shows superior performance in copper removal and recovery efficiency, surpassing MFC in copper regeneration.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Yolina Hubenova, Galin Borisov, Evelina Slavcheva, Mario Mitov
Summary: A novel strain of Gram-positive bacteria Paenibacillus profundus YoMME was identified to possess exoelectrogenicity, capable of generating electricity. The bioanodes formed by this bacteria showed good performance in microbial fuel cells and microbial electrolysis cells, assisting electrolysis processes at a significantly lower voltage to produce hydrogen gas.
BIOELECTROCHEMISTRY
(2022)
Article
Electrochemistry
Mario Mitov, Elitsa Chorbadzhiyska, Ivo Bardarov, Krassimir L. Kostov, Yolina Hubenova
Summary: This study demonstrates the use of microbial electrochemical snorkel (MES) for silver recovery from aqueous solutions for the first time. The results show that MES mode is more advantageous than MFC mode in terms of silver removal and recovery.
ELECTROCHIMICA ACTA
(2022)
Article
Microbiology
Yolina Hubenova, Eleonora Hubenova, Yordan Manasiev, Slavil Peykov, Mario Mitov
Summary: In this study, the draft genome sequence of Paenibacillus profundus YoMME, isolated from the anodic biofilm of a sediment microbial fuel cell, was reported. This bacterium is recognized as one of the few exoelectrogenic Gram-positive bacteria capable of extracellular electron transfer.
MICROBIOLOGY RESOURCE ANNOUNCEMENTS
(2022)
Article
Biochemistry & Molecular Biology
Yolina Hubenova, Elitsa Chorbadzhiyska, Krassimir L. Kostov, Mario Mitov
Summary: The applicability of microbial electrochemical technologies for gold recovery was investigated. It was found that the microbial electrochemical snorkel (MES) mode outperforms the traditional two-chamber microbial fuel cell (MFC) mode in terms of gold removal and recovery. Additionally, gold can be recovered from printed circuit board waste using MES.
BIOELECTROCHEMISTRY
(2023)
Article
Electrochemistry
Yolina Hubenova, Mina Todorova, Rumyana Bakalska, Mario Mitov
Summary: This study examined the spectral and electrochemical properties of three newly synthesized stilbazolium dyes with an enlarged 3t-conjugated system. The dyes were synthesized through Knoevenagel condensation and their composition was confirmed by NMR spectroscopy, elemental analysis, and IR spectroscopy. The solvatochromism, optical band-gap values, HOMO, LUMO energy levels, and electrochemical oxidation/reduction mechanism of the dyes were investigated using UV-Vis and fluorescence spectroscopy, cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy.
Article
Electrochemistry
Yolina Hubenova, Eleonora Hubenova, Mario Mitov
Summary: This study investigates the use of the rootless duckweed Wolffia globosa as a biocatalyst in Plant-based Biofuel Cells (P-BFC) for electricity generation. It is found that W. globosa can produce an electric current, and its metabolic changes lead to increased carbohydrate and protein content. This suggests that W. globosa can be a potential catalyst for P-BFCs.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Pharmacology & Pharmacy
Aleksandra Tencheva, Radoslav Chayrov, Petko Mandjukov, Dancho Danalev, Ivanka Stankova
SCIENTIA PHARMACEUTICA
(2020)
