This page has only limited features, please log in for full access.
I am a senior scientist at Flemish Institute for Technological Research (VITO) currently working on electrosynthesis and resource recovery, specifically, the design and optimization of (bio)electrochemical cells for CO2 conversion and microbial electrosynthesis. I have a PhD in environmental biotechnology and have 126 peer-reviewed publications (h-Index 54), 4 books, 5 patents and 28 book chapters to my credit. Feel free to get in touch about any research or collaboration query on CO2 conversion, gas diffusion electrodes (GDEs), microbial fuel cells, electrosynthesis, electroconversion and sustainable chemistry in general.
Nanosized metal derivatives (NMDs), referring to metals and their oxides, are extensively utilized as additives for anaerobic digestion (AD) and dark fermentation (DF) processes, for enhancing the production of methane (CH4) and hydrogen (H2), respectively. NMDs-derived positive impacts were widely confirmed in many previous studies; however, no consensus exists about how these have been acquired. Undoubtedly, NMDs affect extracellular electron transfer (EET). Consequently, we explore how biotic–biotic interactions, referring to direct interspecies electron transfer (DIET) among AD partners, and biotic–abiotic exchanges, which are mediated by redox reactions with metals, are affected. In this perspective, the mechanisms behind all those effects are reviewed and explained in detail, considering the specific properties of each NMD, e.g., size and type. We discuss previous studies that offer contradicting interpretations about which process dominates metal oxidation, metal reduction, or DIET. In addition, the fate of NMDs residues in the digestate after the treatment process is discussed, focusing on NMDs toxicity. From previous literature, the environmental impacts are evaluated for the production process of NMDs that are utilized in AD and DF processes via life-cycle assessment. This review provides a comprehensive understanding of NMDs–microbes interactions, which are mandatory for (i) building clear scientific knowledge about processes in play and (ii) engineering favorable conditions to achieve optimum yields in AD and DF processes.
Mohamed Elsamadony; Ahmed Elreedy; Alsayed Mostafa; Manabu Fujii; Johannes Gescher; Sepehr Shakeri Yekta; Anna Schnürer; Jean-François Gaillard; Deepak Pant. Perspectives on Potential Applications of Nanometal Derivatives in Gaseous Bioenergy Pathways: Mechanisms, Life Cycle, and Toxicity. ACS Sustainable Chemistry & Engineering 2021, 9, 9563 -9589.
AMA StyleMohamed Elsamadony, Ahmed Elreedy, Alsayed Mostafa, Manabu Fujii, Johannes Gescher, Sepehr Shakeri Yekta, Anna Schnürer, Jean-François Gaillard, Deepak Pant. Perspectives on Potential Applications of Nanometal Derivatives in Gaseous Bioenergy Pathways: Mechanisms, Life Cycle, and Toxicity. ACS Sustainable Chemistry & Engineering. 2021; 9 (29):9563-9589.
Chicago/Turabian StyleMohamed Elsamadony; Ahmed Elreedy; Alsayed Mostafa; Manabu Fujii; Johannes Gescher; Sepehr Shakeri Yekta; Anna Schnürer; Jean-François Gaillard; Deepak Pant. 2021. "Perspectives on Potential Applications of Nanometal Derivatives in Gaseous Bioenergy Pathways: Mechanisms, Life Cycle, and Toxicity." ACS Sustainable Chemistry & Engineering 9, no. 29: 9563-9589.
The current enthusiasm for circular economy (CE) offers a unique opportunity to advance the impact of research on sustainability transitions. Diverse interpretations of CE by scholars, however, produce partly opposing assessments of its potential benefits, which can hinder progress. Here, we synthesize policy-relevant lessons and research directions for a sustainable CE and identify three narratives – optimist, reformist and skeptical – that underpin the ambiguity in CE assessments. Based on 54 key CE scholars’ insights, we identify three research needs: the articulation and discussion of ontologically distinct CE narratives; bridging of technical, managerial, socio-economic, environmental and political CE perspectives; and critical assessment of opportunities and limits of CE science-policy interactions. Our findings offer practical guidance for scholars to engage reflexively with the rapid expansion of CE knowledge, identify and pursue high-impact research directions, and communicate more effectively with practitioners and policymakers.
Sina Leipold; Anna Petit-Boix; Anran Luo; Hanna Helander; Machteld Simoens; Weslynne Ashton; Callie Babbitt; Alba Bala; Catharina Bening; Morten Birkved; Fenna Blomsma; Casper Boks; Alessio Boldrin; Pauline Deutz; Teresa Domenech; Navarro Ferronato; Alejandro Gallego-Schmid; Damien Giurco; Kersty Hobson; Roope Husgafvel; Cynthia Isenhour; Mait Kriipsalu; Donato Masi; Joan Manuel F Mendoza; Leonidas Milios; Monia Niero; Deepak Pant; Keshav Parajuly; Stefan Pauliuk; Marina Pieroni; Jessika Richter; Michael Saidani; Marzena Smol; Laura Talens Peiró; Stijn Van Ewijk; Walter Vermeulen; Dominik Wiedenhofer; Bing Xue. Lessons, narratives and research directions for a sustainable circular economy. 2021, 1 .
AMA StyleSina Leipold, Anna Petit-Boix, Anran Luo, Hanna Helander, Machteld Simoens, Weslynne Ashton, Callie Babbitt, Alba Bala, Catharina Bening, Morten Birkved, Fenna Blomsma, Casper Boks, Alessio Boldrin, Pauline Deutz, Teresa Domenech, Navarro Ferronato, Alejandro Gallego-Schmid, Damien Giurco, Kersty Hobson, Roope Husgafvel, Cynthia Isenhour, Mait Kriipsalu, Donato Masi, Joan Manuel F Mendoza, Leonidas Milios, Monia Niero, Deepak Pant, Keshav Parajuly, Stefan Pauliuk, Marina Pieroni, Jessika Richter, Michael Saidani, Marzena Smol, Laura Talens Peiró, Stijn Van Ewijk, Walter Vermeulen, Dominik Wiedenhofer, Bing Xue. Lessons, narratives and research directions for a sustainable circular economy. . 2021; ():1.
Chicago/Turabian StyleSina Leipold; Anna Petit-Boix; Anran Luo; Hanna Helander; Machteld Simoens; Weslynne Ashton; Callie Babbitt; Alba Bala; Catharina Bening; Morten Birkved; Fenna Blomsma; Casper Boks; Alessio Boldrin; Pauline Deutz; Teresa Domenech; Navarro Ferronato; Alejandro Gallego-Schmid; Damien Giurco; Kersty Hobson; Roope Husgafvel; Cynthia Isenhour; Mait Kriipsalu; Donato Masi; Joan Manuel F Mendoza; Leonidas Milios; Monia Niero; Deepak Pant; Keshav Parajuly; Stefan Pauliuk; Marina Pieroni; Jessika Richter; Michael Saidani; Marzena Smol; Laura Talens Peiró; Stijn Van Ewijk; Walter Vermeulen; Dominik Wiedenhofer; Bing Xue. 2021. "Lessons, narratives and research directions for a sustainable circular economy." , no. : 1.
Katy Armstrong; André Bardow; Xiangkun Elvis Cao; Flavia Cassiola; Nico Fischer; Colin Hills; Ali Reza Kamali; John Kerr; Shaihroz Khan; Walter Leitner; Dharmjeet Madhav; Haresh Manyar; Stephen McCord; Deepak Pant; Ah-Hyung Alissa Park; Jeffrey Poon; Andrea Ramirez; Volker Sick; Peter Styring; Samantha Eleanor Tanzer; Nimisha Tripathi; Keith Whiston. Accelerated mineralisation: general discussion. Faraday Discussions 2021, 230, 213 -226.
AMA StyleKaty Armstrong, André Bardow, Xiangkun Elvis Cao, Flavia Cassiola, Nico Fischer, Colin Hills, Ali Reza Kamali, John Kerr, Shaihroz Khan, Walter Leitner, Dharmjeet Madhav, Haresh Manyar, Stephen McCord, Deepak Pant, Ah-Hyung Alissa Park, Jeffrey Poon, Andrea Ramirez, Volker Sick, Peter Styring, Samantha Eleanor Tanzer, Nimisha Tripathi, Keith Whiston. Accelerated mineralisation: general discussion. Faraday Discussions. 2021; 230 ():213-226.
Chicago/Turabian StyleKaty Armstrong; André Bardow; Xiangkun Elvis Cao; Flavia Cassiola; Nico Fischer; Colin Hills; Ali Reza Kamali; John Kerr; Shaihroz Khan; Walter Leitner; Dharmjeet Madhav; Haresh Manyar; Stephen McCord; Deepak Pant; Ah-Hyung Alissa Park; Jeffrey Poon; Andrea Ramirez; Volker Sick; Peter Styring; Samantha Eleanor Tanzer; Nimisha Tripathi; Keith Whiston. 2021. "Accelerated mineralisation: general discussion." Faraday Discussions 230, no. : 213-226.
Carbon dioxide conversion into useful products has been gaining considerable attention as a global-warming-mitigation technique. The electrochemical conversion of CO2 into high-value chemicals involves the utilization of electrical energy in the presence of an effective catalyst. The process products depend on the number of transferred electrons during the reaction and the characteristics of the electrode. Recently, electrodes coupled with active catalysts have been used to convert CO2 into valuable products including formic acid, hydrocarbons, and syngas. This review offers an overview of the recent literature on the electrochemical conversion of CO2 to valuable products, with an emphasis on the production of formate/formic acid. In addition, it compares the main features of electrochemical conversion to other techniques and summarizes their key advantages. It also provides future perspective for research and development, such as the need for novel and selective catalysts to obtain high conversion and product yield with low energy consumption.
Shaima A. Al‐Tamreh; Mohamed H. Ibrahim; Muftah H. El‐Naas; Jan Vaes; Deepak Pant; Abdelbaki Benamor; Abdulkarem Amhamed. Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review. ChemElectroChem 2021, 1 .
AMA StyleShaima A. Al‐Tamreh, Mohamed H. Ibrahim, Muftah H. El‐Naas, Jan Vaes, Deepak Pant, Abdelbaki Benamor, Abdulkarem Amhamed. Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review. ChemElectroChem. 2021; ():1.
Chicago/Turabian StyleShaima A. Al‐Tamreh; Mohamed H. Ibrahim; Muftah H. El‐Naas; Jan Vaes; Deepak Pant; Abdelbaki Benamor; Abdulkarem Amhamed. 2021. "Electroreduction of Carbon Dioxide into Formate: A Comprehensive Review." ChemElectroChem , no. : 1.
Biomass as a resource is present in large quantities and offers environmental benefits from sequestration of carbon to bioenergy production. Production of renewable and sustainable biofuel (bioethanol) from biomass is gaining overwhelming interest globally. Biofuels are important and beneficial from environmental and economic points of view. The gasohol, ethanol blended gasoline, utilization for the transportation sector significantly reduces greenhouse gas (GHG) emissions as well as consumption of fossil fuels. Bioethanol produced from renewable biomass especially lignocellulosic biomass (LCB) provides opportunities for a sustainable, cleaner, environmentally safe, carbon-neutral fuel, and green alternatives for fossil fuel. Although LCB is present in the massive amounts on planet earth, it is not utilized properly for bioethanol production due to many hurdles in the bioconversion process like pretreatment, high cost of enzymes, mixed sugar conversion, fermentation etc. Great efforts have been devoted in technological improvement in the bioconversion process including biotechnological and metabolic engineering fields. This review focuses on the current status, technological advances, and new interventions in the bioconversion process of LCB into bioethanol with special focus on pre-treatment methods, fermentation approaches, and detoxification processes.
Arti Devi; Anita Singh; Somvir Bajar; Deepak Pant; Zaheer Ud Din. Ethanol from lignocellulosic biomass: An in-depth analysis of pre-treatment methods, fermentation approaches and detoxification processes. Journal of Environmental Chemical Engineering 2021, 9, 105798 .
AMA StyleArti Devi, Anita Singh, Somvir Bajar, Deepak Pant, Zaheer Ud Din. Ethanol from lignocellulosic biomass: An in-depth analysis of pre-treatment methods, fermentation approaches and detoxification processes. Journal of Environmental Chemical Engineering. 2021; 9 (5):105798.
Chicago/Turabian StyleArti Devi; Anita Singh; Somvir Bajar; Deepak Pant; Zaheer Ud Din. 2021. "Ethanol from lignocellulosic biomass: An in-depth analysis of pre-treatment methods, fermentation approaches and detoxification processes." Journal of Environmental Chemical Engineering 9, no. 5: 105798.
Jinlong Gong; Niall J. English; Deepak Pant; Greta R. Patzke; Stefano Protti; Tao Zhang. Power-to-X: Lighting the Path to a Net-Zero-Emission Future. ACS Sustainable Chemistry & Engineering 2021, 9, 7179 -7181.
AMA StyleJinlong Gong, Niall J. English, Deepak Pant, Greta R. Patzke, Stefano Protti, Tao Zhang. Power-to-X: Lighting the Path to a Net-Zero-Emission Future. ACS Sustainable Chemistry & Engineering. 2021; 9 (21):7179-7181.
Chicago/Turabian StyleJinlong Gong; Niall J. English; Deepak Pant; Greta R. Patzke; Stefano Protti; Tao Zhang. 2021. "Power-to-X: Lighting the Path to a Net-Zero-Emission Future." ACS Sustainable Chemistry & Engineering 9, no. 21: 7179-7181.
Plant photosynthesis is one of nature’s best gifts to humankind for converting solar energy into chemical energy in the form of carbohydrates and energy. Plant microbial fuel cells (PMFCs) or photosynthetic MFCs integrate the principles of photosynthesis and fuel cell to convert such synthesized carbohydrates and organic matter into electricity by microbial oxidation in the rhizosphere of plants. Also, plants utilize nutrients from effluent streams for self-growth and metabolism, reducing the nutrient load and heavy metal concentration, and are capable to degrade contaminants. Performance of PMFC is governed by various parameters such as selection of plant species, rhizodeposits, design of MFC, electrode properties, inoculum characteristics, wastewater properties, etc. This chapter discussed the basics of PMFC to applications for real field. According to applications, PMFC designs can be varied as constructed MFC, microbial carbon capture cells, microbial solar cells, floating islands, hydroponics-MFC, and paddy field MFC. Thus, simultaneous organic matter degradation, biomass recovery, oxygen release for cathodic reduction, CO2 sequestrations, nutrient removal, and heavy metal removal along with electricity generation can be achieved in PMFC.
D. A. Jadhav; D. Ghosal; A. D. Chendake; S. Pandit; T. K. Sajana. Plant Microbial Fuel Cell as a Biomass Conversion Technology for Sustainable Development. Catalysis for Clean Energy and Environmental Sustainability 2021, 135 -147.
AMA StyleD. A. Jadhav, D. Ghosal, A. D. Chendake, S. Pandit, T. K. Sajana. Plant Microbial Fuel Cell as a Biomass Conversion Technology for Sustainable Development. Catalysis for Clean Energy and Environmental Sustainability. 2021; ():135-147.
Chicago/Turabian StyleD. A. Jadhav; D. Ghosal; A. D. Chendake; S. Pandit; T. K. Sajana. 2021. "Plant Microbial Fuel Cell as a Biomass Conversion Technology for Sustainable Development." Catalysis for Clean Energy and Environmental Sustainability , no. : 135-147.
The efficient energy recovery from wastewater through microbial fuel cells (MFC) depends on a comprehensive understanding of the electrochemical properties of the system. Different methods to infer electrochemical parameters can be applied. However, the absence of studies confirming the compatibility and inter-validity of these methods makes their comparison difficult. In this study six different electrochemical methods were compared in triplicate MFCs: i) varying circuit resistance (VCR); ii) linear sweep voltammetry (LSV); iii) current interruption (CI); iv) electrochemical impedance spectroscopy (EIS); v) pulse width modulation (R-PWM); and vi) the perturbation observation (P/O) algorithm. Comparative investigations of the ohmic resistances from CI (73.0 ± 11.4 Ω), EIS (70.8 ± 11.1 Ω) and R-PWM (73.3 ± 11.2 Ω) showed high agreement. Further analysis of the activation resistances using detailed model-based methods, such as EIS (26.0 ± 10.9 Ω) and R-PWM (25.0 ± 3.0 Ω) demonstrated that both methods provide identical results. The applicability of the R-PWM mode as a real-time optimization method can be supported by the calculated maximum power densities from VCR and LSV together with the adjusted resistance from the P/O algorithm. In R-PWM mode theoretical power densities up to 95% of the maximum power point can be achieved.
Tobias Littfinski; Edith Nettmann; Tito Gehring; Stefan Krimmler; Jürgen Heinrichmeier; Ernst Murnleitner; Manfred Lübken; Deepak Pant; Marc Wichern. A comparative study of different electrochemical methods to determine cell internal parameters of microbial fuel cells. Journal of Power Sources 2021, 494, 229707 .
AMA StyleTobias Littfinski, Edith Nettmann, Tito Gehring, Stefan Krimmler, Jürgen Heinrichmeier, Ernst Murnleitner, Manfred Lübken, Deepak Pant, Marc Wichern. A comparative study of different electrochemical methods to determine cell internal parameters of microbial fuel cells. Journal of Power Sources. 2021; 494 ():229707.
Chicago/Turabian StyleTobias Littfinski; Edith Nettmann; Tito Gehring; Stefan Krimmler; Jürgen Heinrichmeier; Ernst Murnleitner; Manfred Lübken; Deepak Pant; Marc Wichern. 2021. "A comparative study of different electrochemical methods to determine cell internal parameters of microbial fuel cells." Journal of Power Sources 494, no. : 229707.
Platinum has been used extensively in low-temperature fuel cells (LTFCs), including polymer electrolyte fuel cells and microbial fuel cells (MFCs). Still, its replacement with low-cost alternatives has been a matter of considerable conjecture for some time. This study investigates the possible use of an electrochemically synthesized CP/PANi-Cu cathode as a low-cost replacement for a Pt cathode in MFCs and LTFCs. Thorough and detailed characterization and evaluation of the CP/PANi-Cu cathode was undertaken by electrochemical and advanced surface analytical methods, including scanning electron microscopy (SEM), XPS, FTIR, 4-D X-ray microscopy, and 3D profilometry. Direct comparison of the proposed cathode with a CP/Pt cathode is used to justify its adequacy as a replacement for a platinum cathode. The PANi-Cu coating had a uniform nano-fibrous structure, which enhanced its performance as a cathode. In particular, the incorporation of copper into the coating enhanced its ORR activity. By comparison, the optimum CP/PANi-Cu cathode achieved a 170% higher j0apparent of 0.088 ± 0.003 mA cm–2 than obtained with a standard CP/Pt cathode with a Pt loading of 0.5 mg cm–2. Even when a higher Pt loading of 1.5 mg cm–2 was used, the CP/PANi-Cu cathode performance was still slightly better. The superiority of the CP/PANi-Cu cathode was also reflected in the obtained Rct value of 1.456 Ω cm–2 compared with 3.95 and 1.485 Ω cm–2 obtained with the CP/Pt cathode, which has a Pt loading of 0.5 and 1.5 mg cm–2, respectively. The results obtained by SEM, XPS, FTIR, 4D X-ray microscopy, and 3D profilometry confirmed the unique nature, composition, and presence of copper in the CP/PANi-Cu composite. The results of this study clearly demonstrate that the proposed CP/PANi-Cu cathode can be adopted as a suitable low-cost replacement for a Pt cathode in LTFCs.
Jayesh M. Sonawane; Deepak Pant; Prakash C. Ghosh; Samuel B. Adeloju. Polyaniline–Copper Composite: A Non-precious Metal Cathode Catalyst for Low-Temperature Fuel Cells. Energy & Fuels 2021, 35, 3385 -3395.
AMA StyleJayesh M. Sonawane, Deepak Pant, Prakash C. Ghosh, Samuel B. Adeloju. Polyaniline–Copper Composite: A Non-precious Metal Cathode Catalyst for Low-Temperature Fuel Cells. Energy & Fuels. 2021; 35 (4):3385-3395.
Chicago/Turabian StyleJayesh M. Sonawane; Deepak Pant; Prakash C. Ghosh; Samuel B. Adeloju. 2021. "Polyaniline–Copper Composite: A Non-precious Metal Cathode Catalyst for Low-Temperature Fuel Cells." Energy & Fuels 35, no. 4: 3385-3395.
We report the application of gas diffusion electrodes and catalyst deactivation processes in aprotic CO2 reduction flow cells.
Maximilian König; Shih-Hsuan Lin; Jan Vaes; Deepak Pant; Elias Klemm. Integration of aprotic CO2 reduction to oxalate at a Pb catalyst into a GDE flow cell configuration. Faraday Discussions 2021, 230, 360 -374.
AMA StyleMaximilian König, Shih-Hsuan Lin, Jan Vaes, Deepak Pant, Elias Klemm. Integration of aprotic CO2 reduction to oxalate at a Pb catalyst into a GDE flow cell configuration. Faraday Discussions. 2021; 230 ():360-374.
Chicago/Turabian StyleMaximilian König; Shih-Hsuan Lin; Jan Vaes; Deepak Pant; Elias Klemm. 2021. "Integration of aprotic CO2 reduction to oxalate at a Pb catalyst into a GDE flow cell configuration." Faraday Discussions 230, no. : 360-374.
The anaerobic technology plays a fundamental role in both energy recovery and pollutant removal from wastes. However, it usually suffers from several bottlenecks, such as low reaction rates and poor system stability. To compensate for these limitations, the use of electrical stimulation to promote the anaerobic process, named as electricity-stimulated anaerobic system (ESAS), has been recently proposed. It has been demonstrated that the ESAS can improve energy recovery and pollutant removal substantially, through the regulation of metabolic pathways and electron transfer process by electrical stimulation. This paper comprehensively reviews the research progress of ESASs, covering the application of this system for energy recovery and pollutant removal, the possible enhancement mechanisms in the view of electron transfer process, response of microorganisms under electrical stimulation, as well as the strategies to manipulate such systems. Perspectives on future trends in the development of ESASs are also discussed. It is expected that the review will attract more attention to this promising technology and contribute to its further development.
Xinbai Jiang; Dan Chen; Yang Mu; Deepak Pant; Haoyi Cheng; Jinyou Shen. Electricity-stimulated anaerobic system (ESAS) for enhanced energy recovery and pollutant removal: A critical review. Chemical Engineering Journal 2021, 411, 128548 .
AMA StyleXinbai Jiang, Dan Chen, Yang Mu, Deepak Pant, Haoyi Cheng, Jinyou Shen. Electricity-stimulated anaerobic system (ESAS) for enhanced energy recovery and pollutant removal: A critical review. Chemical Engineering Journal. 2021; 411 ():128548.
Chicago/Turabian StyleXinbai Jiang; Dan Chen; Yang Mu; Deepak Pant; Haoyi Cheng; Jinyou Shen. 2021. "Electricity-stimulated anaerobic system (ESAS) for enhanced energy recovery and pollutant removal: A critical review." Chemical Engineering Journal 411, no. : 128548.
Carbon foam was used as a substrate for NiO and growing carbon nanofibers. The synthesized NiO-CNF-CF electrode was successfully used as an efficient electrode for a microbial fuel cell.
Shiv Singh; Amol Pophali; Rishabh Anand Omar; Rajeev Kumar; Pradip Kumar; Dehi Pada Mondal; Deepak Pant; Nishith Verma. A nickel oxide-decorated in situ grown 3-D graphitic forest engrained carbon foam electrode for microbial fuel cells. Chemical Communications 2020, 57, 879 -882.
AMA StyleShiv Singh, Amol Pophali, Rishabh Anand Omar, Rajeev Kumar, Pradip Kumar, Dehi Pada Mondal, Deepak Pant, Nishith Verma. A nickel oxide-decorated in situ grown 3-D graphitic forest engrained carbon foam electrode for microbial fuel cells. Chemical Communications. 2020; 57 (7):879-882.
Chicago/Turabian StyleShiv Singh; Amol Pophali; Rishabh Anand Omar; Rajeev Kumar; Pradip Kumar; Dehi Pada Mondal; Deepak Pant; Nishith Verma. 2020. "A nickel oxide-decorated in situ grown 3-D graphitic forest engrained carbon foam electrode for microbial fuel cells." Chemical Communications 57, no. 7: 879-882.
The inhibition of the anaerobic digestion (AD) process, caused by long chain fatty acids (LCFAs), has been considered as an important issue in the wastewater treatment sector. Proper understanding of mechanisms behind the inhibition is a must for further improvements of the AD process in the presence of LCFAs. Through analyzing recent literature, this review extensively describes the mechanism of LCFAs degradation, during AD. Further, a particular focus was directed to the key parameters which could affect such process. Besides, this review highlights the recent research efforts in mitigating LCFAs-caused inhibition, through the addition of commonly used additives such as cations and natural adsorbents. Specifically, additives such as bentonite, cation-based adsorbents, as well as zeolite and other natural adsorbents for alleviating the LCFAs-induced inhibition are discussed in detail. Further, panoramic evaluations for characteristics, various mechanisms of reaction, merits, limits, recommended doses, and preferred conditions for each of the different additives are provided. Moreover, the potential for increasing the methane production via pretreatment using those additives are discussed. Finally, we provide future horizons for the alternative materials that can be utilized, more efficiently, for both mitigating LCFAs-based inhibition and boosting methane potential in the subsequent digestion of LCFA-related wastes.
Mohamed Elsamadony; Alsayed Mostafa; Manabu Fujii; Ahmed Tawfik; Deepak Pant. Advances towards understanding long chain fatty acids-induced inhibition and overcoming strategies for efficient anaerobic digestion process. Water Research 2020, 190, 116732 .
AMA StyleMohamed Elsamadony, Alsayed Mostafa, Manabu Fujii, Ahmed Tawfik, Deepak Pant. Advances towards understanding long chain fatty acids-induced inhibition and overcoming strategies for efficient anaerobic digestion process. Water Research. 2020; 190 ():116732.
Chicago/Turabian StyleMohamed Elsamadony; Alsayed Mostafa; Manabu Fujii; Ahmed Tawfik; Deepak Pant. 2020. "Advances towards understanding long chain fatty acids-induced inhibition and overcoming strategies for efficient anaerobic digestion process." Water Research 190, no. : 116732.
Carbon dioxide (one of the main greenhouse gases) can be used as a raw material in microbial electrosynthesis system (MES) for the production of valuable organic compounds. However, one of the major drawbacks associated with the MES is the mass transfer limitation of CO2 in the aqueous phase. In order to overcome this limitation, several operational strategies such as the increase of CO2 flow rate have been proposed. Therefore, the present paper assessed an H-type MES (H-Cell) carried out under CO2 pure gas supplied at 5, 10 and 20 mL min-1, and a gas diffusion electrode (GDE) MES (VITO-Cell) under 5 and 20 mL min-1. In both the MESs, the increase of the CO2 flow rate led to the improvement of inorganic carbon concentration, reaching until 1068 ± 115 mg L-1 in VITO-Cell. Consequently, in H-Cell the maximum acetate production rate increased from 45 to 270 mg L-1 d-1 when the CO2 flow varied from 5 to 20 mL min-1. In VITO-Cell the maximum acetate production rate reached 85 mg L―1 d―1 at 5 mL min-1 CO2 flow rate due to a better gas-liquid mass transfer coefficient of CO2 provided by the GDE.
Mélida Del Pilar Anzola Rojas; Marcelo Zaiat; Ernesto Rafael González; Heleen De Wever; Deepak Pant. Enhancing the gas–liquid mass transfer during microbial electrosynthesis by the variation of CO2 flow rate. Process Biochemistry 2020, 101, 50 -58.
AMA StyleMélida Del Pilar Anzola Rojas, Marcelo Zaiat, Ernesto Rafael González, Heleen De Wever, Deepak Pant. Enhancing the gas–liquid mass transfer during microbial electrosynthesis by the variation of CO2 flow rate. Process Biochemistry. 2020; 101 ():50-58.
Chicago/Turabian StyleMélida Del Pilar Anzola Rojas; Marcelo Zaiat; Ernesto Rafael González; Heleen De Wever; Deepak Pant. 2020. "Enhancing the gas–liquid mass transfer during microbial electrosynthesis by the variation of CO2 flow rate." Process Biochemistry 101, no. : 50-58.
A cost and time saving strategy for the recovery of biomethane from rice straw using a novel phase-separated pretreatment.
S. Kavitha; R. Yukesh Kannah; S. Kasthuri; M. Gunasekaran; Arulazhagan Pugazhendi; Eldon R. Rene; Deepak Pant; Gopalakrishnan Kumar; J. Rajesh Banu. Profitable biomethane production from delignified rice straw biomass: the effect of lignin, energy and economic analysis. Green Chemistry 2020, 22, 8024 -8035.
AMA StyleS. Kavitha, R. Yukesh Kannah, S. Kasthuri, M. Gunasekaran, Arulazhagan Pugazhendi, Eldon R. Rene, Deepak Pant, Gopalakrishnan Kumar, J. Rajesh Banu. Profitable biomethane production from delignified rice straw biomass: the effect of lignin, energy and economic analysis. Green Chemistry. 2020; 22 (22):8024-8035.
Chicago/Turabian StyleS. Kavitha; R. Yukesh Kannah; S. Kasthuri; M. Gunasekaran; Arulazhagan Pugazhendi; Eldon R. Rene; Deepak Pant; Gopalakrishnan Kumar; J. Rajesh Banu. 2020. "Profitable biomethane production from delignified rice straw biomass: the effect of lignin, energy and economic analysis." Green Chemistry 22, no. 22: 8024-8035.
There has been a considerable increment in the atmospheric CO2 concentration, which has majorly contributed to the problem of global warming. This issue can be extenuated by effectively developing microbial electrosynthesis (MES) for the sequestration of CO2 with the concurrent production of biochemical and biofuels. Though the MES technology is in its infancy, it has exhibited enormous potential for sustainable mitigation of CO2 and bioelectrosynthesis of multi-carbon organic compounds. The problem of storage of excess renewable electrical energy by conventional means can also be alleviated by employing MES, which stores it in the form of C-C bonds of chemicals. This review focuses on the various aspects of MES and recent developments made in this field to overcome its bottlenecks, such as the lower yield of organic compounds, separation of products of higher chain organic compounds, etc. In particular, the microbial catalysts and cathode materials employed in MES have also been emphasized. Keeping in mind the potential of this innovative technology, researchers should focus on improving the yield of MES by developing novel low-cost cathode materials and discovering efficient and robust microorganisms for MES, which would be a significant step forward towards the further advancement of this technology.
Sovik Das; Ludo Diels; Deepak Pant; Sunil A. Patil; M. M. Ghangrekar. Review—Microbial Electrosynthesis: A Way Towards The Production of Electro-Commodities Through Carbon Sequestration with Microbes as Biocatalysts. Journal of The Electrochemical Society 2020, 167, 155510 .
AMA StyleSovik Das, Ludo Diels, Deepak Pant, Sunil A. Patil, M. M. Ghangrekar. Review—Microbial Electrosynthesis: A Way Towards The Production of Electro-Commodities Through Carbon Sequestration with Microbes as Biocatalysts. Journal of The Electrochemical Society. 2020; 167 (15):155510.
Chicago/Turabian StyleSovik Das; Ludo Diels; Deepak Pant; Sunil A. Patil; M. M. Ghangrekar. 2020. "Review—Microbial Electrosynthesis: A Way Towards The Production of Electro-Commodities Through Carbon Sequestration with Microbes as Biocatalysts." Journal of The Electrochemical Society 167, no. 15: 155510.
Several pre-treatment approaches have been explored to enhance the anaerobic fermentation kinetics and efficiency, which include thermal-alkaline treatment, free ammonia, sequential ultrasound techniques as well as grinding, and sieving. Additionally, valorization of mineralized compounds and production of reusable water can also be achieved via post-treatments. The post-treatment concept allows preserving or recovery of value-added byproducts in the form of manures, soil conditioners, and renewable energy. In this chapter, we explain the recent advancement in the pre-treatment and post-treatment of anaerobic digestate to enhance the anaerobic process and for the removal of undesirable compounds, recovery of energy, nutrients, and waste stabilization before disposal.
Suman Bajracharya; Nabin Aryal; Jayesh M. Sonawane; Suman Kharel; Shalik Ram Sharma; Deepak Pant. Prime Techniques for Pre- and Post-Treatments of Anaerobic Effluents and Solids. Environmental Microbiology and Biotechnology 2020, 255 -289.
AMA StyleSuman Bajracharya, Nabin Aryal, Jayesh M. Sonawane, Suman Kharel, Shalik Ram Sharma, Deepak Pant. Prime Techniques for Pre- and Post-Treatments of Anaerobic Effluents and Solids. Environmental Microbiology and Biotechnology. 2020; ():255-289.
Chicago/Turabian StyleSuman Bajracharya; Nabin Aryal; Jayesh M. Sonawane; Suman Kharel; Shalik Ram Sharma; Deepak Pant. 2020. "Prime Techniques for Pre- and Post-Treatments of Anaerobic Effluents and Solids." Environmental Microbiology and Biotechnology , no. : 255-289.
Sanitation is the basic quality index of life and proper sanitation practices play a vital role in maintaining the hygienic conditions. Use of human waste (urine and faeces) as a substrate for microbial oxidation is found to be sustainable approach towards improving the sanitation facilities. Advancement in microbial fuel cell (MFC) system towards field-scale application for treatment of human waste is restricted by several technological, social, economical, material science and bio-electrochemical limitations. However, recently developed Pee-power urinal and Bioelectric toilet demonstrated the field-scale applicability of MFC for human waste treatment and simultaneous electricity generation for onsite use. This review mainly focuses on suitability and applicability of human waste as a substrate in MFC to improve the sanitation facilities and also the challenges faced while scaling-up of this system for field applications are being discussed along with possible solutions. Recent advancement towards field-scale application of MFC demonstrated that this technology is getting ready for the commercialization in sanitation infrastructure.
Dipak A. Jadhav; Indrasis Das; Makarand M. Ghangrekar; Deepak Pant. Moving towards practical applications of microbial fuel cells for sanitation and resource recovery. Journal of Water Process Engineering 2020, 38, 101566 .
AMA StyleDipak A. Jadhav, Indrasis Das, Makarand M. Ghangrekar, Deepak Pant. Moving towards practical applications of microbial fuel cells for sanitation and resource recovery. Journal of Water Process Engineering. 2020; 38 ():101566.
Chicago/Turabian StyleDipak A. Jadhav; Indrasis Das; Makarand M. Ghangrekar; Deepak Pant. 2020. "Moving towards practical applications of microbial fuel cells for sanitation and resource recovery." Journal of Water Process Engineering 38, no. : 101566.
The current climate awareness coupled with increased focus on renewable energy and biobased chemicals have led to an increased demand for such biomass derived products. Electrosynthesis is a relatively new approach that allows a shift from conventional fossil-based chemistry towards a new model of a real sustainable chemistry that allows to use the excess renewable electricity to convert biobased feedstock into base and commodity chemicals. The electrosynthesis approach is expected to increase the production efficiency and minimize negative health for the workers and environmental impact all along the value chain. In this review, we discuss the various electrosynthesis approaches that have been applied on carbohydrate biomass specifically to produce valuable chemicals. The studies on the electro-oxidation of saccharides have mostly targeted the oxidation of the primary alcohol groups to form the corresponding uronic acids, with Au or TEMPO as the active electrocatalysts. The investigations on electroreduction of saccharides focused on the reduction of the aldehyde groups to the corresponding alcohols, using a variety of metal electrodes. Both oxidation and reduction pathways are elaborated here with most recent examples. Further recommendations have been made about the research needs, choice of electrocatalyst and electrolyte as well as upscaling the technology.
Vincent Vedovato; Karolien Vanbroekhoven; Deepak Pant; Joost Helsen. Electrosynthesis of Biobased Chemicals Using Carbohydrates as a Feedstock. Molecules 2020, 25, 3712 .
AMA StyleVincent Vedovato, Karolien Vanbroekhoven, Deepak Pant, Joost Helsen. Electrosynthesis of Biobased Chemicals Using Carbohydrates as a Feedstock. Molecules. 2020; 25 (16):3712.
Chicago/Turabian StyleVincent Vedovato; Karolien Vanbroekhoven; Deepak Pant; Joost Helsen. 2020. "Electrosynthesis of Biobased Chemicals Using Carbohydrates as a Feedstock." Molecules 25, no. 16: 3712.
An increase in atmospheric CO2 concentration is directly associated with the rising concerns of climate change and energy issues. The development of effective technologies for capture and utilization of atmospheric CO2 is required to mitigate these global challenges. Electrochemical CO2 reduction (eCO2R) is one of the most promising approaches for the conversion of excess renewable energy sources into storable fuels and value-added chemicals. This field has recently advanced enormously with impressive research achievements aiming at bringing the technology on the brink of commercial realization. Herein, we present a comprehensive review analyzing the recent progress and opportunities of using different cell designs with the main focus on membrane-based flow cells for eCO2R, along with the required system-level strategies for optimal engineering to enhance electrocatalytic selectivity and efficiency. Research advance on the use of different polymer electrolyte membranes for CO2 electrolyzers is updated. Main achievements in new catalyst discoveries are assessed in terms of activity, selectivity, stability together with CO2R reaction kinetics. This was supported by the analysis of the computational studies performed to devise the effective catalyst design routes and to understand the pathways for CO2Rs. The interactive effect of the design of reactors and gas diffusion electrodes with catalysts is analyzed for different operating conditions (like pH, temperature and pressure) of CO2 electrolyzers. Finally, an outlook on future research directions in terms of material and process design for a breakthrough in eCO2R technologies is provided.
Ramato Ashu Tufa; Debabrata Chanda; Ming Ma; David Aili; Taye Beyene Demissie; Jan Vaes; Qingfeng Li; Shanhu Liu; Deepak Pant. Towards highly efficient electrochemical CO2 reduction: Cell designs, membranes and electrocatalysts. Applied Energy 2020, 277, 115557 .
AMA StyleRamato Ashu Tufa, Debabrata Chanda, Ming Ma, David Aili, Taye Beyene Demissie, Jan Vaes, Qingfeng Li, Shanhu Liu, Deepak Pant. Towards highly efficient electrochemical CO2 reduction: Cell designs, membranes and electrocatalysts. Applied Energy. 2020; 277 ():115557.
Chicago/Turabian StyleRamato Ashu Tufa; Debabrata Chanda; Ming Ma; David Aili; Taye Beyene Demissie; Jan Vaes; Qingfeng Li; Shanhu Liu; Deepak Pant. 2020. "Towards highly efficient electrochemical CO2 reduction: Cell designs, membranes and electrocatalysts." Applied Energy 277, no. : 115557.