Guang Yang, Jianlong Wang

Fuel • 2019

Gabriele Soggia, Andrea Goglio, Elisa Clagnan et al.

ACS Omega • 2026

Due to the intermittency of solar and wind energy generation, efficient energy storage solutions are essential to ensure a global transition to renewable energy sources. Bioelectrochemical Power-to-Hydrogen systems are a promising storage pathway, yet their development is limited by high costs and low productivity compared to conventional hydrogen production. Novel, sustainable, and cost-effective materials, such as carbon-based electrodes, can help to overcome these challenges. This study evaluates five cathodes for hydrogen and methane production in microbial electrolysis cells (MECs) operated at 600 and 800 mV: stainless steel mesh (SSM), two custom-made biochars derived from olive mill waste (OMW-1, OMW-2), and two commercial carbon-based materials (Carbon Black and Black Pearls). OMW-1 achieved a H 2 yield of 257 ± 62 mL L -1 d -1 at 800 mV, showing the potential of noncommercial biochar. CB and SSM performed better, reaching 493 ± 57 and 496 ± 9 mL L -1 d -1 H 2 , respectively. Cyclic voltammetry and next-generation sequencing revealed that hydrogen-oxidizing bacteria colonization negatively impacted H 2 yields. At 600 mV, increased CH 4 production was observed for OMW-2, BP, and CB. Energetically, OMW-2 (3.0 ± 0.2 kWh L -1 d -1 ) performed comparably to CB and BP (both 3.3 kWh L -1 d -1 ), outperforming SSM at both voltages. These findings support the viability of carbon-based cathodes as sustainable alternatives to metal-based ones with the potential to reduce electrode costs while maintaining or improving energy productivity.

Shoujie Ren, X. Philip Ye, Abhijeet P. Borole

Journal of Analytical and Applied Pyrolysis • 2017

Luguang Wang, Kevin Linowski, Muhaiminul Islam et al.

Chemical Engineering Journal • 2025

Medhat A. Nemitallah, Abdulrahman A. Alnazha, Usama Ahmed et al.

Results in Engineering • 2024

This review presents a broad exploration of the techno economic evaluation of different technologies utilized in the production of hydrogen from both renewable and non-renewable sources. These encompass methods ranging from extracting hydrogen from fossil fuels or biomass to employing microbial processes, electrolysis of water, and various thermochemical cycles. A rigorous techno-economic evaluation of hydrogen production technologies can provide a critical cost comparison for future resource allocation, priorities, and trajectory. This evaluation will have a great impact on future hydrogen production projects and the development of new approaches to reduce overall production costs and make it a cheaper fuel. Different methods of hydrogen production exhibit varying efficiencies and costs: fast pyrolysis can yield up to 45% hydrogen at a cost range of $1.25 to $2.20 per kilogram, while gasification, operating at temperatures exceeding 750 °C, faces challenges such as limited small-scale coal production and issues with tar formation in biomass. Steam methane reforming, which constitutes 48% of hydrogen output, experiences cost fluctuations depending on scale, whereas auto-thermal reforming offers higher efficiency albeit at increased costs. Chemical looping shows promise in emissions reduction but encounters economic hurdles, and sorption-enhanced reforming achieves over 90% hydrogen but requires CO2 storage. Renewable liquid reforming proves effective and economically viable. Additionally, electrolysis methods like PEM aim for costs below $2.30 per kilogram, while dark fermentation, though cost-effective, grapples with efficiency challenges. Overcoming technical, economic barriers, and managing electricity costs remains crucial for optimizing hydrogen production in a low-carbon future, necessitating ongoing research and development efforts.

Xiaohong Xie, Miao Song, Luguang Wang et al.

ACS Catalysis • 2019

Electrolysis in neutral pH solutions (e.g., wastewater and seawater) presents a transformative way for environmentally friendly, cost-effective hydrogen production. However, one of the biggest challenges is the lack of active, robust hydrogen evolution reaction (HER) catalysts. In this work, we present a catalyst with dual-active sites of MoP 2 and MoP, which function synergistically to promote HER in neutral pH solutions. In our microbial electrolysis cell (MEC) test, which uses neutral pH wastewater as feedstock, this catalyst delivers an average HER current density of 157 A m –2 cathode-surface-area , higher than Pt catalyst (145 A m –2 cathode-surface-area )—with the same amount of catalyst loading, ~5 times higher than the state-of-art Pt group metal-free catalysts in MECs. Our catalyst also outperforms Pt in natural seawater with ~10% higher and more stable HER current density. The fundamental reason for the enhanced HER performance is identified to be the synergy between MoP2 and MoP phases, with MoP 2 promoting H 2 O dissociation and MoP efficiently converting H ad into H 2 .

Patricia Zamora, Tanya Georgieva, Annemiek ter Heijne et al.

Journal of Power Sources • 2017

A two-step treatment system for nutrient and energy recovery from urine was successfully operated for six months. In the first step, phosphorus (P) was recovered as struvite (magnesium ammonium phosphate or MAP) in a MAP reactor. The effluent of this MAP reactor was used for total ammonia-nitrogen (TAN) recovery and hydrogen production in a Microbial Electrolysis Cell (MEC). This MEC was coupled to a Transmembranechemisorption (TMCS) module, in which the TAN was recovered as an ammonium sulphate solution. The MEC had a projected surface area of 0.5 m2 and was operated at different urine dilutions. The system was stable during the operation on 2 times diluted and undiluted urine at an applied voltage of 0.5 V with an average current density of 1.7 ± 0.2 A m−2. During stable current production, the TAN transport efficiency over the CEM was 92 ± 25% and the TAN recovery was 31 ± 59%. In terms of energy efficiency, the electrical energy required for the TAN recovery was 4.9 ± 1.0 MJ kgN−1, which is lower than competing electrochemical nitrogen removal/recovery technologies. Overall, this study shows, for the first time, the application of a scaled-up MEC for nutrient recovery from urine.

Abdullah Almatouq, Akintunde Babatunde, Mishari Khajah et al.

Journal of Water Process Engineering • 2020

Aida Afify, M. M. Kassem, A. Abd El Gwad et al.

Journal of Agricultural Chemistry and Biotechnology • 2017

Industrial wastewater was used as the substrate for bio-hydrogen ( Bio-H2 ) production in Microbial Electrolysis Cells (MECs) by Escherichia coli NRRL B-3008 and Pseudomonas aeruginosa ATCC 27853. Three volumes of anode chamber in MECs 300ml, 400 ml and 500 ml were applied. Salt bridge was used for the exchange of protons from anode to cathode chamber. External voltage of 0.4 V, 0.6 V and 0.8 V was used applied to MECs using a regulated power supply. The highest volume of Bio-H2 358.24 cm3 and 343.57cm3 at the anode chamber 500 ml with power supply 0.8 V by Escherichia coli NRRL B-3008 and Pseudomonas aeruginosa ATCC 27853 respectively .

Chaoming Rao, Zhifeng Zhao, Zhenhai Wen et al.

Sustainable Energy & Fuels • 2023

Hybrid neutral-alkaline microbial fuel cells with a newly fabricated Mo 2 C based cathode catalyst can release a current density of 14.0 A m −2 at an applied voltage of 0.8 V.

Ahmad Hosseinzadeh, John L. Zhou, Xiaowei Li et al.

Renewable and Sustainable Energy Reviews • 2021

Qizi Fu, Dongbo Wang, Siwei Li et al.

Renewable and Sustainable Energy Reviews • 2020

José de Jesús Colín Robles, Ixbalank Torres, V. Alcaraz‐González

2021 European Control Conference (ECC) • 2021

The production of hydrogen by microbial electrolysis cell from organic matter is a very promising new technology with a better performance and a lower generation of greenhouse gases compared to other biological processes such as dark fermentation and with lower required energy compared to the classical water electrolysis. In this paper, the optimization of a microbial electrolysis cell to maximize the hydrogen production rate is presented. The maximum productivity is computed using the golden section search algorithm. The optimum flow rate is then online computed by a discrete-time super-twisting controller. The feasibility of the optimization method is demonstrated by numerical simulations.

Peerawat Khongkliang, Aminee Jehlee, Prawit Kongjan et al.

International Journal of Hydrogen Energy • 2019

Ramachandran Sivaramakrishnan, Sabarathinam Shanmugam, Manigandan Sekar et al.

Fuel • 2021

Ayesha Aslam, Ali Bahadar, Rabia Liaquat et al.

Process Safety and Environmental Protection • 2024

Bing Zhang, Suixin Zhang, Rui Yao et al.

Journal of Electronic Science and Technology • 2021

This study presents an overview of the current status of hydrogen production in relation to the global requirement for energy and resources. Subsequently, it symmetrically outlines the advantages and disadvantages of various production routes including fossil fuel/biomass conversion, water electrolysis, microbial fermentation, and photocatalysis (PC), in terms of their technologies, economy, energy consumption, and costs. Considering the characteristics of hydrogen energy and the current infrastructure issues, it highlights that onsite production is indispensable and convenient for some special occasions. Finally, it briefly summarizes the current industrialization situation and presents future development and research directions, such as theoretical research strengthening, renewable raw material development, process coupling, and sustainable energy use.

Eunjin Jwa, Sanghyeon Kim, Namjo Jeong et al.

Chemical Engineering Journal • 2025

Jun-Ho Cha, Yunjeong Choi, Huiju Park et al.

Process Safety and Environmental Protection • 2024

Ling Wang, Chunxue Yang, Sangeetha Thangavel et al.

Frontiers of Environmental Science & Engineering • 2020

Jeff R. Beegle, Abhijeet P. Borole

Environmental Science Water Research & Technology • 2017

This paper explores an integrated anaerobic digestion/microbial electrolysis cell process (ADMEC) with alkaline or thermal hydrolysis pretreatment methods to improve COD conversion to hydrogen gas.

Mengdi Ji, Jianlong Wang

International Journal of Hydrogen Energy • 2021

Victoria Brooks, Alex J. Lewis, Parker Dulin et al.

Biomass and Bioenergy • 2018

Huajun Feng, Lijie Huang, Meizhen Wang et al.

International Journal of Hydrogen Energy • 2018

M. Mitov, Elitsa Chorbadzhiyska, L. Nalbandian et al.

Journal of Power Sources • 2017

Zhe Yu, Wenzong Liu, Yingjun Shi et al.

The Science of The Total Environment • 2020

Antonella Marone, Olga Rocío Ayala-Campos, Éric Trably et al.

International Journal of Hydrogen Energy • 2016

Wilson S. Fernandes‐Junior, Leticia Fernanda Zaccarin, Geiser Gabriel Oliveira et al.

Journal of Sensors • 2021

The use of nanostructured materials is already well‐known as a powerful tool in the development of electrochemical sensors. Among several immobilization strategies of nanomaterials in the development of electrochemical sensors, the use of low‐cost and environmentally friendly polymeric materials is highlighted. In this context, a new nanostructured biocomposite electrode is proposed as an electrochemical sensor for the analysis and determination of tetracycline. The composite electrode consists of a modified glassy carbon electrode (GCE) with a nanodiamond‐based (ND) and manioc starch biofilm (MS), called ND‐MS/GCE. The proposed sensor showed better electrochemical performance in the presence of tetracycline in comparison to the unmodified electrode, which was attributed to the increase in the electroactive surface area due to the presence of nanodiamonds. A linear dynamic range from 5.0 × 10 −6 to 1.8 × 10 −4 mol L −1 and a limit of detection of 2.0 × 10 −6 mol L −1 were obtained for the proposed sensor. ND‐MS/GCE exhibited high repeatability and reproducibility for successive measurements with a relative standard deviation (RSD) of 6.3% and 1.5%, respectively. The proposed electrode was successfully applied for the detection of tetracycline in different kinds of water samples, presenting recoveries ranging from 86 to 112%.

Bowen Qiao, Jiaxin Wang, Lipeng Qiao et al.

Regenerative Biomaterials • 2023

For the treatment of MRSA-infected wounds, the spatiotemporally sequential delivery of antibacterial and anti-inflammatory drugs is a promising strategy. In this study, ROS-responsive HA-PBA/PVA (HPA) hydrogel was prepared by phenylborate ester bond cross-linking between hyaluronic acid-grafted 3-amino phenylboronic acid (HA-PBA) and polyvinyl alcohol (PVA) to achieve spatiotemporally controlled release of two kinds of drug to treat MRSA-infected wound. The hydrophilic antibiotic moxifloxacin (M) was directly loaded in the hydrogel. And hydrophobic curcumin (Cur) with anti-inflammatory function was first mixed with Pluronic F127 (PF) to form Cur-encapsulated PF micelles (Cur-PF), and then loaded into the HPA hydrogel. Due to the different hydrophilic and hydrophobic nature of moxifloxacin and Cur and their different existing forms in the HPA hydrogel, the final HPA/M&Cur-PF hydrogel can achieve different spatiotemporally sequential delivery of the two drugs. In addition, the swelling, degradation, self-healing, antibacterial, anti-inflammatory, antioxidant property, and biocompatibility of hydrogels were tested. Finally, in the MRSA-infected mouse skin wound, the hydrogel-treated group showed faster wound closure, less inflammation and more collagen deposition. Immunofluorescence experiments further confirmed that the hydrogel promoted better repair by reducing inflammation (TNF-α) and promoting vascular (VEGF) regeneration. In conclusion, this HPA/M&Cur-PF hydrogel that can spatiotemporally sequential deliver antibacterial and anti-inflammatory drugs showed great potential for the repair of MRSA-infected skin wounds.

Diana P. Baquero, Virginija Cvirkaitė‐Krupovič, Shengen Shawn Hu et al.

Cell • 2023

Sangmun Choi, Iruthayapandi Selestin Raja, Aravindha Raja Selvaraj et al.

Advanced Composites and Hybrid Materials • 2022

Raminder Kaur, Pooja Singh, Surya Tanwar et al.

Macromol—A Journal of Macromolecular Research • 2022

Among numerous synthetic macromolecules, polyurethane in its different forms has proven its sheer dominance and established a reputation as a reliable and trusted material due to its proficiency in terms of superior properties, which include: high mechanical strength and abrasion resistance, good durability, good adhesion, good thermal stability, excellent chemical and weathering resistance. Synthetic polyurethane materials are non-biodegradable, poisonous, and use petrochemical-based raw materials, which are now depleting, leading to a surge in polyurethane production costs. Bio-based polyurethanes (PU) have been synthesized by researchers in recent decades and have mostly overtaken petrochemical-based PU in terms of challenges such as solid pollution, economic effectiveness, and availability of raw materials. Enormous kinds of available bio-renewable sources as predecessors for the production of polyols and isocyanates have been explored for the development of “greener” PU materials; these bio-based polyurethanes have significant potential to be used as future PU products, with a partial or total replacement of petroleum-based polyurethanes, due to increasing concern about the environment, their relatively low cost and biodegradability. This critical review concentrates on the possibilities of renewable sources to be used for polyurethane production and gives a clear perspective on the journey, utilization, and recent advancements in the field of different bio-based polyurethane polymers that have arisen over the last decade.

Yongkang Dong, Zheng Wang

Frontiers in Bioengineering and Biotechnology • 2023

The intricate healing process of skin wounds includes a variety of cellular and molecular events. Wound healing heavily relies on reactive oxygen species (ROS), which are essential for controlling various processes, including inflammation, cell growth, angiogenesis, granulation, and the formation of extracellular matrix. Nevertheless, an overabundance of reactive oxygen species (ROS) caused by extended oxidative pressure may result in the postponement or failure of wound healing. It is crucial to comprehend the function of reactive oxygen species (ROS) and create biomaterials that efficiently eliminate ROS to enhance the healing process of skin wounds. In this study, a thorough examination is presented on the role of reactive oxygen species (ROS) in the process of wound healing, along with an exploration of the existing knowledge regarding biomaterials employed for ROS elimination. In addition, the article covers different techniques and substances used in the management of skin wound. The future prospects and clinical applications of enhanced biomaterials are also emphasized, highlighting the potential of biomaterials that scavenge active oxygen to promote skin repair. This article seeks to enhance the understanding of the complex processes of ROS in the healing of wounds and the application of ROS-scavenging materials. Its objective is to create novel strategies for effective treatment skin wounds.

Yuxia Wei, Qingqing Liu, Wei-Ping Li et al.

Journal of environmental chemical engineering • 2025

Dinesh Rokaya, Hans Erling Skallevold, Viritpon Srimaneepong et al.

Journal of Composites Science • 2023

Shape memory polymers (SMPs) are emerging smart materials that have the ability to change to a shape and revert to their permanent shape on application of external stimulus. SMPs can be divided into four types based on their permanent shape, elasticity origin, and temporary shape fixing mechanism: chemically cross-linked glassy thermosets, chemically cross-linked semi-crystalline, physically cross-linked glassy copolymers, and physically cross-linked block copolymers. The broad overview of recent developments on SMPs for biomedical applications proves their wide applicability in the field of general medicine, drug delivery, regenerative medicine, dentistry, neuromedicine, cancer therapy, orthopedics, and corrosion protection. Herein, a comprehensive analysis of SMPs and their composites with focus on their types, mechanism, functionality and biomedical applications is presented. Relevant biomedical technologies based on SMPs and their future advancement towards biomedical applications are also discussed.

Kritika, Indrajit Roy

Materials Advances • 2022

Magnetic nanoparticles (MNPs) show tremendous possibilities in the field of biomedicine, especially as therapeutic agents for use over a prolonged duration.

Omar Mohammad Atta, Sehrish Manan, Abeer Ahmed Qaed Ahmed et al.

Polymers • 2021

The unique properties and advantages of edible films over conventional food packaging have led the way to their extensive exploration in recent years. Moreover, the incorporation of bioactive components during their production has further enhanced the intrinsic features of packaging materials. This study was aimed to develop edible and bioactive food packaging films comprising yeast incorporated into bacterial cellulose (BC) in conjunction with carboxymethyl cellulose (CMC) and glycerol (Gly) to extend the shelf life of packaged food materials. First, yeast biomass and BC hydrogels were produced by Meyerozyma guilliermondii (MT502203.1) and Gluconacetobacter xylinus (ATCC53582), respectively, and then the films were developed ex situ by mixing 30 wt.% CMC, 30 wt.% Gly, 2 wt.% yeast dry biomass, and 2 wt.% BC slurry. FE-SEM observation showed the successful incorporation of Gly and yeast into the fibrous cellulose matrix. FTIR spectroscopy confirmed the development of composite films through chemical interaction between BC, CMC, Gly, and yeast. The developed BC/CMC/Gly/yeast composite films showed high water solubility (42.86%). The yeast-incorporated films showed antimicrobial activities against three microbial strains, including Escherichia coli , Pseudomonas aeruginosa , and Saccharomyces aureus, by producing clear inhibition zones of 16 mm, 10 mm, and 15 mm, respectively, after 24 h. Moreover, the films were non-toxic against NIH-3T3 fibroblast cells. Finally, the coating of oranges and tomatoes with BC/CMC/Gly/yeast composites enhanced the shelf life at different storage temperatures. The BC/CMC/Gly/yeast composite film-coated oranges and tomatoes demonstrated acceptable sensory features such as odor and color, not only at 6 °C but also at room temperature and further elevated temperatures at 30 °C and 40 °C for up to two weeks. The findings of this study indicate that the developed BC/CMC/Gly/yeast composite films could be used as edible packaging material with high nutritional value and distinctive properties related to the film component, which would provide protection to foods and extend their shelf life, and thus could find applications in the food industry.

Laurine D. W. Burdorf, Anton Tramper, Dorina Seitaj et al.

Biogeosciences • 2017

Abstract. Recently, long filamentous bacteria have been reported conducting electrons over centimetre distances in marine sediments. These so-called cable bacteria perform an electrogenic form of sulfur oxidation, whereby long-distance electron transport links sulfide oxidation in deeper sediment horizons to oxygen reduction in the upper millimetres of the sediment. Electrogenic sulfur oxidation exerts a strong impact on the local sediment biogeochemistry, but it is currently unknown how prevalent the process is within the seafloor. Here we provide a state-of-the-art assessment of its global distribution by combining new field observations with previous reports from the literature. This synthesis demonstrates that electrogenic sulfur oxidation, and hence microbial long-distance electron transport, is a widespread phenomenon in the present-day seafloor. The process is found in coastal sediments within different climate zones (off the Netherlands, Greenland, the USA, Australia) and thrives on a range of different coastal habitats (estuaries, salt marshes, mangroves, coastal hypoxic basins, intertidal flats). The combination of a widespread occurrence and a strong local geochemical imprint suggests that electrogenic sulfur oxidation could be an important, and hitherto overlooked, component of the marine cycle of carbon, sulfur and other elements.

Sajad Bahrami, Nafiseh Baheiraei, Mostafa Shahrezaee

Scientific Reports • 2021

A variety of bone-related diseases and injures and limitations of traditional regeneration methods require new tissue substitutes. Tissue engineering and regeneration combined with nanomedicine can provide different natural or synthetic and combined scaffolds with bone mimicking properties for implantation in the injured area. In this study, we synthesized collagen (Col) and reduced graphene oxide coated collagen (Col-rGO) scaffolds, and we evaluated their in vitro and in vivo effects on bone tissue repair. Col and Col-rGO scaffolds were synthesized by chemical crosslinking and freeze-drying methods. The surface topography, and the mechanical and chemical properties of scaffolds were characterized, showing three-dimensional (3D) porous scaffolds and successful coating of rGO on Col. The rGO coating enhanced the mechanical strength of Col-rGO scaffolds to a greater extent than Col scaffolds by 2.8 times. Furthermore, Col-rGO scaffolds confirmed that graphene addition induced no cytotoxic effects and enhanced the viability and proliferation of human bone marrow-derived mesenchymal stem cells (hBMSCs) with 3D adherence and expansion. Finally, scaffold implantation into rabbit cranial bone defects for 12 weeks showed increased bone formation, confirmed by Hematoxylin-Eosin (H&E) and alizarin red staining. Overall, the study showed that rGO coating improves Col scaffold properties and could be a promising implant for bone injuries.

Muhammad Hassan Sarfraz, Muhammad Zubaır, Bilal Aslam et al.

Frontiers in Microbiology • 2023

The aim of this study was to provide a comparative analysis of chitosan (CH), copper oxide (CuO), and chitosan-based copper oxide (CH-CuO) nanoparticles for their application in the healthcare sector. The nanoparticles were synthesized by a green approach using the extract of Trianthema portulacastrum . The synthesized nanoparticles were characterized using different techniques, such as the synthesis of the particles, which was confirmed by UV-visible spectrometry that showed absorbance at 300 nm, 255 nm, and 275 nm for the CH, CuO, and CH-CuO nanoparticles, respectively. The spherical morphology of the nanoparticles and the presence of active functional groups was validated by SEM, TEM, and FTIR analysis. The crystalline nature of the particles was verified by XRD spectrum, and the average crystallite sizes of 33.54 nm, 20.13 nm, and 24.14 nm were obtained, respectively. The characterized nanoparticles were evaluated for their in vitro antibacterial and antibiofilm potential against Acinetobacter baumannii isolates, where potent activities were exhibited by the nanoparticles. The bioassay for antioxidant activity also confirmed DPPH scavenging activity for all the nanoparticles. This study also evaluated anticancer activities of the CH, CuO, and CH-CuO nanoparticles against HepG2 cell lines, where maximum inhibitions of 54, 75, and 84% were recorded, respectively. The anticancer activity was also confirmed by phase contrast microscopy, where the treated cells exhibited deformed morphologies. This study demonstrates the potential of the CH-CuO nanoparticle as an effective antibacterial agent, having with its antibiofilm activity, and in cancer treatment.