Microbial electrosynthesis: is it sustainable for bioproduction of acetic acid?

Gadkari, Siddharth; Beigi, Behzad Haji Mirza; Aryal, Nabin; Sadhukhan, Jhuma

doi:10.1039/d1ra00920f

Cited by 23 publications

(13 citation statements)

References 60 publications

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“…The base equations (eqn (1)-( 3)) were used to conduct a quick check for the effect of varying initial COD concentration on chromium conversion, and consequently the LCA output. The effect of electrode type was investigated by Gadkari et al (2021) in MES used for acetic acid production. 39 The electrode sensitivity of the LCA output was also tested by replacing the carbon cloth electrode (Fig.…”

Section: Life Cycle Assessmentmentioning

confidence: 99%

Hexavalent chromium waste removal via bioelectrochemical systems – a life cycle assessment perspective

Muazu

Sadhukhan

Mohan

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Life Cycle Assessmentmentioning

confidence: 99%

Hexavalent chromium waste removal via bioelectrochemical systems – a life cycle assessment perspective

Muazu

Sadhukhan

Mohan

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…In the case of ethanol production, the fermentation processes usually generate carbon dioxide (CO 2 ) 144 . Aiming to mitigate the CO 2 emission, microbial electrosynthesis based on bio‐electrochemical systems offers one such potentially sustainable route to produce useful chemicals 145 . This technology uses microorganisms' metabolism to reduce CO 2 to a wide range of chemicals, such as different acids (formic, acetic, caproic, butyric, succinic, etc.…”

Section: Perspectives For the Valorization Of Apple Waste In A Bioref...mentioning

confidence: 99%

Sustainable valorization of apple waste in a biorefinery: a bibliometric analysis

Oliveira

Ampese

Sforça

et al. 2022

Biofuels Bioprod Bioref

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This bibliometric study explored the scientific publications of apple waste over the period from 2000 to 2020, aiming to contribute to the sustainable development of the apple industry toward waste-biorefinery implementation, advocating a circular economy. The bibliometric study covered the publications' evolution, research areas, top-cited papers, international collaborative networks, top countries and journals. The results demonstrate that 628 documents (604 articles and 24 reviews) studied apple waste over the last 20 years, and the number of publications exponentially increased after 2010. The most used keywords revealed that the main studied topics in the field were associated with technologies to manage apple pomace, the main solid waste generated from juice production, demonstrating a research trend toward renewable energy and bio-based products. The bibliometric study indicated that the most productive countries are China, India and the USA. Apple waste could be an environmentally friendly feedstock for biorefinery design and implementation. The biorefinery could produce value-added products (polyphenols, pectin, sugars and essential oils) and bioenergy (ethanol, methane, electricity and heat) in different industrial arrangements. The main technological routes described in the literature have been associated with the production of lactic acid, xylitol, ethanol, bioactive compounds, xyloglucan, films, pectin, acetic acid, acetone-butanol-ethanol, emulsifiers and inulinase enzyme. In conclusion, this review contributes to the decision-making for the industrial implementation of a waste biorefinery, advocating circular economy transition based on the sustainable valorization of apple waste.

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“…To mitigate the climate impact potential of the battery, phosphorous recycling is needed. Microbial electrosynthesis [29][30][31] is a potential process for the recovery of phosphorous from wastewater sludge. Alternative organic solvents can be investigated that can be sourced from waste resources applying the circular economy principle [32,33].…”

Section: Hotspot Analysis Of Bess Componentsmentioning

confidence: 99%

An In-Depth Life Cycle Assessment (LCA) of Lithium-Ion Battery for Climate Impact Mitigation Strategies

Sadhukhan

Christensen²

2021

Energies

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Battery energy storage systems (BESS) are an essential component of renewable electricity infrastructure to resolve the intermittency in the availability of renewable resources. To keep the global temperature rise below 1.5 °C, renewable electricity and electrification of the majority of the sectors are a key proposition of the national and international policies and strategies. Thus, the role of BESS in achieving the climate impact mitigation target is significant. There is an unmet need for a detailed life cycle assessment (LCA) of BESS with lithium-ion batteries being the most promising one. This study conducts a rigorous and comprehensive LCA of lithium-ion batteries to demonstrate the life cycle environmental impact hotspots and ways to improve the hotspots for the sustainable development of BESS and thus, renewable electricity infrastructure. The whole system LCA of lithium-ion batteries shows a global warming potential (GWP) of 1.7, 6.7 and 8.1 kg CO2 eq kg−1 in change-oriented (consequential) and present with and without recycling credit consideration, scenarios. The GWP hotspot is the lithium-ion cathode, which is due to lithium hexafluorophosphate that is ultimately due to the resource-intensive production system of phosphorous, white, liquid. To compete against the fossil economy, the GWP of BESS must be curbed by 13 folds. To be comparable with renewable energy systems, hydroelectric, wind, biomass, geothermal and solar (4–76 g CO2 eq kWh−1), 300 folds reduction in the GWP of BESS will be necessary. The areas of improvement to lower the GWP of BESS are as follows: reducing scopes 2–3 emissions from fossil resource use in the material production processes by phosphorous recycling, increasing energy density, increasing lifespan by effective services, increasing recyclability and number of lives, waste resource acquisition for the battery components and deploying multi-faceted integrated roles of BESS. Achieving the above can be translated into an overall avoided GWP of up to 82% by 2040.

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Microbial electrosynthesis: is it sustainable for bioproduction of acetic acid?

Abstract: Detailed LCA study of acetic acid production using microbial electrosynthesis to explore scenarios when this process could become sustainable.

Cited by 23 publications

References 60 publications

Hexavalent chromium waste removal via bioelectrochemical systems – a life cycle assessment perspective

Hexavalent chromium waste removal via bioelectrochemical systems – a life cycle assessment perspective

Sustainable valorization of apple waste in a biorefinery: a bibliometric analysis

An In-Depth Life Cycle Assessment (LCA) of Lithium-Ion Battery for Climate Impact Mitigation Strategies

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