Loop bioenergy production and carbon sequestration of polymeric waste by integrating biochemical and thermochemical conversion processes: A conceptual framework and recent advances

Lü, Fan; Zhang, Hua; Shao, Liming; He, Pinjing

doi:10.1016/j.renene.2017.10.084

Cited by 53 publications

(17 citation statements)

References 126 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Anaerobic digestion (AD) has been highlighted as an important organic waste treatment technology for bioenergy production. Acetate is a main intermediate during AD processes and can be accumulated to high concentrations, due to the rapid fermentation of easily biodegradable waste [1]. The high acetate concentration is identified as a significant cause of inhibition in AD processes [2–4].…”

Section: Introductionmentioning

confidence: 99%

Responses of Methanosarcina barkeri to acetate stress

Duan

Han

et al. 2019

Biotechnol Biofuels

Self Cite

View full text Add to dashboard Cite

BackgroundAnaerobic digestion of easily degradable biowaste can lead to the accumulation of volatile fatty acids, which will cause environmental stress to the sensitive methanogens consequently. The metabolic characteristics of methanogens under acetate stress can affect the overall performance of mixed consortia. Nevertheless, there exist huge gaps in understanding the responses of the dominant methanogens to the stress, e.g., Methanosarcinaceae. Such methanogens are resistant to environmental deterioration and able to utilize multiple carbon sources. In this study, transcriptomic and proteomic analyses were conducted to explore the responses of Methanosarcina barkeri strain MS at different acetate concentrations of 10, 25, and 50 mM.ResultsThe trend of OD600 and the regulation of the specific genes in 50 mM acetate, indicated that high concentration of acetate promoted the acclimation of M. barkeri to acetate stress. Acetate stress hindered the regulation of quorum sensing and thereby eliminated the advantages of cell aggregation, which was beneficial to resist stress. Under acetate stress, M. barkeri allocated more resources to enhance the uptake of iron to maintain the integrities of electron-transport chains and other essential biological processes. Comparing with the initial stages of different acetate concentrations, most of the genes participating in acetoclastic methanogenesis did not show significantly different expressions except hdrB1C1, an electron-bifurcating heterodisulfide reductase participating in energy conversion and improving thermodynamic efficiency. Meanwhile, vnfDGHK and nifDHK participating in nitrogen fixation pathway were upregulated.ConclusionIn this work, transcriptomic and proteomic analyses are combined to reveal the responses of M. barkeri to acetate stress in terms of central metabolic pathways, which provides basic clues for exploring the responses of other specific methanogens under high organics load. Moreover, the results can also be used to gain insights into the complex interactions and geochemical cycles among natural or engineered populations. Furthermore, these findings also provide the potential for designing effective and robust anaerobic digesters with high organic loads.

show abstract

Section: Introductionmentioning

confidence: 99%

Responses of Methanosarcina barkeri to acetate stress

Duan

Han

et al. 2019

Biotechnol Biofuels

Self Cite

View full text Add to dashboard Cite

show abstract

“…Lü et al (2016) [44] revealed that BC can support AD under high ammonium stress (up to 7 g-N L -1 ). The above-mentioned studies suggest a positive effect of BC towards ammonia inhibition, however, there isn't full agreement on the mitigation mechanisms hypothesized: cation exchange capacity [34,151]; chemical and/or physical adsorption capacity and surface functional groups [33,34,151]; promotion of direct interspecies electron transfer (DIET) [44,153]; immobilization of microorganisms [43,44].…”

Section: Adsorption Of Inhibitorsmentioning

confidence: 99%

Review of biochar role as additive in anaerobic digestion processes

Chiappero

Norouzi

et al. 2020

Renewable and Sustainable Energy Reviews

200

View full text Add to dashboard Cite

Anaerobic digestion (AD) could be considered as a mature technology and nowadays it can still play a pivot role because of the urgent need to provide renewable energy sources and efficiently manage the continuously growing amount of organic waste. Biochar (BC) is an extremely versatile material, which could be produced by carbonization of organic materials, including biomass and wastes, consistently with Circular Economy principles, and "tailor-made" for specific applications. The potential BC role as additive in the control of the many well-known critical issues of AD processes has been increasingly

show abstract

“…APL is a water-based solution containing numerous organic compounds with a high COD concentration ranging from 30 to 500 gCOD/L (Seyedi et al 2019;Zhou et al 2019;Wen et al 2020). During some pyrolysis conditions, the yield of APL can be high, representing about 70 to 100% of the total weight of the pyrolysis liquids and up to 60% of the original biomass carbon, creating the need to carefully manage the large quantities of this liquid waste (Torri and Fabbri 2014;Liu et al 2017;Mukarakate et al 2017;Lü et al 2018). The carbon fractions, mass balance, energy balance, and product yields during pyrolysis can vary considerably depending on feedstock, pyrolysis temperatures, and extraction procedures.…”

Section: Pyrolysismentioning

confidence: 99%

Current status of biomethane production using aqueous liquid from pyrolysis and hydrothermal liquefaction of sewage sludge and similar biomass

Seyedi

Venkiteshwaran

2020

Rev Environ Sci Biotechnol

View full text Add to dashboard Cite

Pyrolysis and hydrothermal liquefaction (HTL) are potential technologies for renewable energy production and waste valorization using municipal wastewater sewage sludge and other lignocellulosic biomass. However, the organic-rich aqueous pyrolysis liquid (APL) and HTL aqueous phase (HTL-AP) produced currently have no apparent use and are challenging to manage. Furthermore, the toxic organic compounds in them can be harmful to the environment. Anaerobic digestion (AD) may be a viable method to manage the liquids and recover energy in APL and HTL-AP in form of methane-rich biogas. Integrating thermochemical processes with AD could promote a circular economy by recovering resources and reducing environmental pollution. The challenge, however, is the presence of toxic compounds recalcitrant to anaerobic biodegradation such as phenols and nitrogen-containing organics that can inhibit methaneproducing microbes. This review presents information

show abstract

Loop bioenergy production and carbon sequestration of polymeric waste by integrating biochemical and thermochemical conversion processes: A conceptual framework and recent advances

Cited by 53 publications

References 126 publications

Responses of Methanosarcina barkeri to acetate stress

Responses of Methanosarcina barkeri to acetate stress

Review of biochar role as additive in anaerobic digestion processes

Current status of biomethane production using aqueous liquid from pyrolysis and hydrothermal liquefaction of sewage sludge and similar biomass

Contact Info

Product

Resources

About