Article
Environmental Sciences
Qile Zhu, Xiaoyue Li, Zhenchuan Nie, Yiwen Wang, Tianqi Dang, Vagelis G. Papadakis, Maria A. Goula, Wen Wang, Ziyi Yang
Summary: Upgrading waste nitrogen sources is an important approach to promote sustainable development. In this study, a multifunctional bio-electrochemical system was established, achieving high microbial protein production, CO2 consumption, and electricity generation. The migration of NH4+-N in the system followed kinetic models, and the hydrogen-oxidizing bacteria in the protein chamber produced high-quality amino acids.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Neeraj Kumar Singh, Rajesh Singh
Summary: This study investigated the impact of ammonia pre-treated electrodes on hydrogen production in a bioelectrochemical system enriched with sulfate-reducing bacteria. The results showed that the ammonia pre-treated electrodes inhibited the growth of methanogens, leading to higher hydrogen production efficiency, and the Richard model was the best-fitted model for cumulative hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
S. Georg, A. T. Puari, M. P. G. Hanantyo, T. Sleutels, P. Kuntke, A. ter Heijne, C. J. N. Buisman
Summary: This research presents an integrated BES and HRES system for ammonium recovery, combining the advantages of both systems to achieve high removal efficiency at low energy input. The HRES compensates for BES instability, resulting in overall high removal efficiency of 89-95%, but with an increased energy demand of 5.2-10.2 MJ/kgN.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Samarjeet Singh Siwal, Qibo Zhang, Adesh Kumar Saini, Vijai Kumar Gupta, Dave Roberts, Vipin Saini, Frederic Coulon, Bhawna Pareek, Vijay Kumar Thakur
Summary: This article discusses the importance of the food-energy-water nexus, with a focus on the structure and application in biorefineries and bioelectro-chemical systems. Through analysis of energy efficiency and valuable product recoveries, technologies for enhancing resource utilization efficiency and reducing environmental impacts are explored.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Jing-Xian Wang, Xue-Jin Yang, Yan-Zhai Wang, Kai Yang, Huayou Chen, Yang-Chun Yong
Summary: A signal amplification system for electrochemical sensing was established using bio-nanohybrid cells based on bacterial self-assembly and biomineralization. This system showed high transmembrane electron transfer efficiency and achieved ultrasensitive detection of riboflavin.
ANALYTICAL CHEMISTRY
(2022)
Article
Polymer Science
Johannes Jorda, Emanuele Cesprini, Marius-Catalin Barbu, Gianluca Tondi, Michela Zanetti, Pavel Kral
Summary: This study introduces a completely bio-based adhesive formulation consisting of Quebracho extract and furfural for the production of special plywood products. The experimental results demonstrate that this formulation exhibits good mechanical properties under suitable press parameters, but shows delamination after water immersion.
Article
Engineering, Environmental
Hao Jiang, Lizhang Wang, Bai Gao, Yiran Li, Yadan Guo, Mengning Zhuo, Kaixuan Sun, Binyu Lu, Meiyu Jia, Xiaoxia Yu, Huidong Wang, Yongge Li
Summary: Utilizing OH- oxidation as a counter reaction to CO2 electroreduction can increase formate production rate and faradic efficiency. Alkaline anolyte helps stabilize catholyte pH, avoiding competitive hydrogen evolution reaction, and has the lowest power consumption compared to other anolytes.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Hao Wan, Alexander Bagger, Jan Rossmeisl
Summary: In this study, the possible reaction mechanisms of electrocatalytic N2 oxidation reaction (NOR) and its competition with oxygen evolution reaction (OER) were investigated using density functional theory simulations. The rate-determining step of converting N2 to N2O was proposed and a microkinetic model was used to study the rate of NOR on metal oxides. Design strategies were suggested to promote electrochemical NOR.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Agricultural Engineering
Yan Tian, Da Li, Guohong Liu, Chao Li, Jia Liu, Jing Wu, Junfeng Liu, Yujie Feng
Summary: A microbial reverse-electrodialysis CO2 reduction cell was developed and successfully utilized to drive CO2-to-formate conversion. The optimal conditions were found to be 1 g NaAc L-1 COD load at the anode and 10 mL min(-1) CO2 flow rate at the cathode. MRECC showed a total energy efficiency of 4.6% and coulombic efficiency of 46.4%.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Tim Wissink, Alex J. W. Man, Wei Chen, Jason M. J. J. Heinrichs, Rim C. J. van de Poll, Marta C. Figueiredo, Emiel J. M. Hensen
Summary: This study investigated the evolution of various bismuth-based catalysts during reaction and found that their morphology changed with the formation of Bi2O2CO3 layers, which facilitated the reduction of metallic bismuth. The final phase and morphology depended on the size of the bismuth precursor. Quasi-in situ XPS analysis revealed the persistence of Bi2O2CO3 contribution on the surface of the reduced catalysts.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Engineering, Environmental
Mariana Rodrigues, R. Jensen Lund, Annemiek ter Heijne, Tom Sleutels, Cees J. N. Buisman, Philipp Kuntke
Summary: Nitrogen is an essential nutrient for plants and plays a crucial role in agriculture. However, the nitrogen cycle between agricultural input and wastewater content has been disrupted. Recent research has shown that nitrogen can be recovered from wastewater using an electrochemical system combined with a gas permeable membrane. The recovered fertilizers were tested on spinach and radish crops, and it was found that they significantly improved crop growth, indicating their potential as an alternative to commercial fertilizers.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Food Science & Technology
Giacomo Di Matteo, Paola Di Matteo, Matteo Sambucci, Jacopo Tirillo, Anna Maria Giusti, Giuliana Vinci, Laura Gobbi, Sabrina Antonia Prencipe, Andrea Salvo, Cinzia Ingallina, Mattia Spano, Anatoly P. Sobolev, Noemi Proietti, Valeria Di Tullio, Paola Russo, Luisa Mannina, Marco Valente
Summary: In this study, a multidisciplinary protocol was proposed to monitor the preservation of fresh pumpkin samples using different commercial polymeric films. Chemical, mechanical, and microbiological analyses were conducted on the fresh and packaged samples, showing promising results in terms of microbial counts and total microbial counts remaining below the threshold value for up to 7 or 11 days in different packaging films.
Article
Environmental Sciences
Dan Qu, Junhui Zhang, Dongjin Wan, Zhenhua Niu
Summary: A novel combined system of heterotrophic and bio-electrochemical hydrogen autotrophic (CHBHA) was developed for efficient removal of perchlorate using low chemical dosages and energy consumption. The system showed high perchlorate removal efficiency at different operational stages, with the heterotrophic part (H-part) playing a major role at optimal hydraulic retention times (HRTs) and acetate dosage. The system also demonstrated synergistic removal of perchlorate by the H-part and electrochemical hydrogen autotrophic part (E-part). The combined system significantly reduced energy costs compared to the single E-part system and improved effluent quality by converting perchlorate into active chlorine.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Physical
Shi He, Yufeng Chen, Mengdi Wang, Hanggai Nuomin, Peter Novello, Xueqian Li, Siyuan Zhu, Jie Liu
Summary: Ammonia is a promising hydrogen mediator that reduces the cost of hydrogen transportation, but improvements are needed for extracting hydrogen. Ammonia electrolysis is a convenient method for low-cost hydrogen production. Nickel-cobalt nitride nanosheets show high electrocatalytic activity for the ammonia oxidation reaction in non-aqueous solutions.
Article
Chemistry, Multidisciplinary
Xiyang Cai, Zulipiya Shadike, Xinyin Cai, Xingdian Li, Liuxuan Luo, Lu An, Jiewei Yin, Guanghua Wei, Fan Yang, Shuiyun Shen, Junliang Zhang
Summary: This study proposes a feasible membrane electrode assembly (MEA) configuration as a promising solution to overcome the limitations of the lithium-mediated process (LiNR) in ammonia synthesis via the electrochemical nitrogen reduction reaction (NRR). The MEA configuration offers the advantages of efficient gas transfer, reduced solvent consumption, and compact structure for LiNR.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Environmental
Rajeswari Selvaraj, Manikandan Santhanam, Vidhya Selvamani, Sundarapandiyan Sundaramoorthy, Maruthamuthu Sundaram
JOURNAL OF HAZARDOUS MATERIALS
(2018)
Article
Engineering, Environmental
Manikandan Santhanam, Rajeswari Selvaraj, Vinothkumar Veerasubbian, Maruthamuthu Sundaram
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Biotechnology & Applied Microbiology
Shanthi Vaithiyanathan, Karthikeyan Chandrasekaran, R. C. Barik
Article
Environmental Sciences
Karthikeyan Chandrasekaran, Hosimin Selvaraj, Maruthamuthu Sundaram
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Chemistry, Physical
Chandrasekaran Karthikeyan, G. N. Suresh Babu, Sundaram Maruthamuthu, Nallathamby Kalaiselvi
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Engineering, Environmental
Karthikeyan Chandrasekaran, Hema Sindhuja George, Lakshmi Venkideswaran, Hosimin Selvaraj, Maruthamuthu Sundaram
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Sridharan Dharmarajan, Karthikeyan Chandrasekaran, Maruthamuthu Sundaram, Palaniswamy Narayanan
Summary: The electrochemical response of stainless steel surface in the presence of natural freshwater biofilm at various temperatures was studied, with observations on biofilm adhesion and evaluations using cyclic voltammetry, impedance spectroscopy, and polarization studies. This research is expected to aid in the development of biosensors for industrial applications.
Article
Materials Science, Multidisciplinary
Sridharan Dharmarajan, Karthikeyan Chandrasekaran, Maruthamuthu Sundaram, Palaniswamy Narayanan
Summary: This research found that the nature of oxide films on alloy steels affects the electrochemical behavior of biofilms, with the biofilm on 316L SS showing distinct differences from other alloys.
Article
Chemistry, Physical
Karthikeyan Chandrasekaran, Monika Rajendran, Arumugasamy Krishnavelayutham, Rajasekar Arulliah, Manoharan Subbiah
Summary: The study found that phosphate increases the weight loss of the anode, while carbonate also influences the anode dissolution. Additionally, under dynamic conditions, the dissolution rate of the anode is 2.5 times higher.
SURFACES AND INTERFACES
(2021)
Article
Environmental Sciences
Sivasankar Annamalai, Karthikeyan Chandrasekaran, Won Sik Shin, Maruthamuthu Sundaram, Thaj Mohammed Khaleel
Summary: This study proposes a physicochemical method for treating tannery industrial waste salt. Through the addition of sodium hydroxide and sodium carbonate, calcium and magnesium removal efficiency was improved. The recovered sodium chloride, with a purity of over 98%, can be reused as a preservative salt and in the pickling process in the tannery industry.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Dharmarajan Sridharan, Chandrasekaran Karthikeyan, Sundaram Maruthamuthu, Narayanan Palaniswamy
Summary: This study investigated the electrophysiology of freshwater active biofilm using FTO electrodes. The attachment of biofilm on the FTO surface was revealed through open circuit potential and microscopic studies. Results showed a shift in potential to noble direction after 240 hours of exposure. Cyclic voltammetry and electrochemical impedance spectroscopy were used to analyze the electrochemical communications between FTO and biofilm interfaces.
Article
Environmental Sciences
C. Karthikeyan, R. C. Barik, V. Rajesh Kannan
Summary: During corrosion, a dense product formed on the surface of niobium acts as a catalyst for the degradation of methylene blue dye. The niobium catalyst can be easily synthesized at room temperature through simple precipitation in an alkali medium. The synthesized catalyst shows good thermal stability and contains sodium, niobium, and oxygen elements. It effectively degrades methylene blue following pseudo-first-order kinetics, with a degradation rate constant of 0.9934 min(-1).
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Karthikeyan Chandrasekaran, Hosimin Selvaraj, Sridharan Dharmarajan, Maruthamuthu Sundaram, Hema Sindhuja George
Summary: This study deals with the separation and recovery of thiosulfate using formate from industrial effluent. It involves the utilization of microorganisms to degrade organic compounds and reduce thiosulfate to sulfide. The impact of iron surface on thiosulfate reduction and the efficiency of sulfur recovery using different electrode patterns were also investigated.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Karthikeyan Chandrasekaran, Hosimin Selvaraj, Hema Sindhuja George, Maruthamuthu Sundaram, Thaj Mohammed Khaleel
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2020)
Article
Environmental Sciences
Manikandan Santhanam, Rajeswari Selvaraj, Sivasankar Annamalai, Maruthamuthu Sundaram