Energetic and economic evaluation of Chlamydomonas reinhardtii hydrothermal liquefaction and pyrolysis through thermochemical models

Hognon, Céline; Delrue, Florian; Boissonnet, Guillaume

doi:10.1016/j.energy.2015.09.021

Cited by 28 publications

(15 citation statements)

References 30 publications

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“…There are however few evaluations of HTL processes, most on the conversions of biomass into biofuel. The majority of the evaluations of the HTL process are done on either algae (Hognon et al 2015;Ou, Thilakaratne, Brown, & Wright, 2015) or wood (Goudriaan & Peferoen, 1990;Zhu et al, 2014). Other studies exist on swine manure as a resource (Buisonjé et al, 2010;Minarick et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Other studies exist on swine manure as a resource (Buisonjé et al, 2010;Minarick et al, 2011). Typical production costs for diesel type fuels from cultivated algae are in the 2-3 € L -1 range (Hognon et al, 2015) considering a fully integrated production site. Prices of defatted (waste) algae are much lower as the extracted lipids are sold at a premium price.…”

Section: Introductionmentioning

confidence: 99%

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Economic Evaluation of a Hydrothermal Liquefaction Process

et al. 2018

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Wet waste streams include a wide variety of products such as food processing residues, sewage sludge, but also the organic fraction of municipal solid waste. Hydrothermal liquefaction is a thermochemical conversion in hot compressed water that produces a hydrophobic product. This paper gives presents how hydrothermal liquefaction can produce a biocrude or a heavy fuel oil from blackcurrant pomace, grape marc and sewage sludge. The paper presents experimental results as well as a technical and economic evaluation of the process. The results from hydrothermal liquefaction depend on the resource. Typical biocrude yield is 50% of the dry resource while bio-oil yield can be up to 25%. High ash resources are however less interesting for this technology. The production costs are high compared to their fossil counterparts but gate fees in the order of 50 to 130 € tonne-1 could ensure economic competitiveness compared to fossil fuels.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Economic Evaluation of a Hydrothermal Liquefaction Process

et al. 2018

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“…The plant viability is determined through a Techno-Economic Assessment (TEA) based on the methodology described in [19]. Several reports of TEAs have been presented in literature for a wide range of potential industrial and waste slurries: woody biomass [20][21][22], algae [23,24], food waste [25] and agricultural waste [26], with a primary focus thus far towards upgraded liquid fuel production for the transportation sector.…”

Section: Introductionmentioning

confidence: 99%

Techno-economic Assessment of Integrated Hydrothermal Liquefaction and Combined Heat and Power Production from Lignocellulose Residues

Magdeldin

Kohl

Järvinen

2017

J. sustain. dev. energy water environ. syst.

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Waste biomass as a mean for global carbon dioxide emissions mitigation remains under-utilized. This is mainly due to the low calorific value of virgin feedstock, characterized generally with high moisture content. Aqueous processing, namely hydrothermal liquefaction in subcritical water conditions, has been demonstrated experimentally to thermally densify solid lignocellulose into liquid fuels without the pre-requisite and energy consuming drying step. This study presents a techno-economic evaluation of an integrated hydrothermal liquefaction system with downstream combined heat and power production from forest residues. The utilization of the liquefaction by-products and waste heat from the elevated processing conditions, coupled with the chemical upgrading of the feedstock enables the poly-generation of biocrude, electricity and district heat. The plant thermal efficiency increases by 3.5 to 4.6% compared to the conventional direct combustion case. The economic assessment showed that the minimum selling price of biocrude, based on present co-products market prices, hinders commercialization and ranges between 138 EUR to 178 EUR per MWh. A sensitivity analysis and detailed discussion on the techno-economic assessment results are presented for the different process integration and market case scenarios.

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“…The concept is represented on Figure 2. Additionally, HTL pathways are getting closer to economic viability with estimated biofuel production cost around 2.5 €/L of biofuel [101]. Microalgal biomass grown on wastewater may not conform to chemical and biological safety regulations to be reused in the raw state, for example, in instances when the biochemical composition does not meet the desired criteria, or when there is too much fouling by pathogenic organisms or by toxic pollutants.…”

Section: Biomass Valorizationmentioning

confidence: 99%

Section: Biomass Valorizationmentioning

confidence: 99%

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

et al. 2016

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Abstract:Microalgae have been shown to be a source of multiple bio-based products ranging from high value molecules to commodities. Along with their potential to produce a large variety of products, microalgae can also be used for the depollution of wastewaters of different origins (urban, industrial, and agricultural). This paper is focused on the importance of harnessing the bioremediation capacity of microalgae to treat wastewaters in order to develop the microalgae industry (especially the microalgae biofuel industry) and to find other alternatives to the classic wastewater treatment processes. The current research on the potential of microalgae to treat a specific wastewater or a targeted pollutant is reviewed and discussed. Then, both strategies of selecting the best microalgae strain to treat a specific wastewater or pollutant and using a natural or an artificial consortium to perform the treatment will be detailed. The process options for treating wastewaters using microalgae will be discussed up to the final valorization of the biomass. The last part is dedicated to the challenges which research need to address in order to develop the potential of microalgae to treat wastewaters.

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Energetic and economic evaluation of Chlamydomonas reinhardtii hydrothermal liquefaction and pyrolysis through thermochemical models

Cited by 28 publications

References 30 publications

Economic Evaluation of a Hydrothermal Liquefaction Process

Economic Evaluation of a Hydrothermal Liquefaction Process

Techno-economic Assessment of Integrated Hydrothermal Liquefaction and Combined Heat and Power Production from Lignocellulose Residues

The Environmental Biorefinery: Using Microalgae to Remediate Wastewater, a Win-Win Paradigm

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