Hydrothermal liquefaction of four brown macro-algae commonly found on the UK coasts: An energetic analysis of the process and comparison with bio-chemical conversion methods

Anastasakis, Konstantinos; Ross, Andrew B.

doi:10.1016/j.fuel.2014.09.006

Cited by 116 publications

(63 citation statements)

References 33 publications

(54 reference statements)

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“…In general, AD from seaweeds was proven to be a valuable option from an energy point of view [42]. The use of a mechanical pretreatment is justified when it benefits the system by increasing the methane yield or lowering the digestion time.…”

Section: Energy Evaluationmentioning

confidence: 99%

Optimisation of biogas production from the macroalgae Laminaria sp. at different periods of harvesting in Ireland

et al. 2016

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h i g h l i g h t sAutumn was the best harvesting period of Laminaria sp. as feedstock for AD, in Ireland. During spring, the system was improved by applying the pretreatment and at a VS concentration of 2.5%. Higher methane yields were observed at short pretreatment times and at VS concentration below 2.5%. A positive energy balance was estimated in autumn and early spring. a b s t r a c tBrown seaweeds are a suitable substrate for biogas production through anaerobic digestion (AD). Since the carbohydrates' content is subjected to a seasonal variation, this research aimed to select the best harvesting period of beach cast brown seaweed Laminaria sp. for methane production, while optimising the use of a beating pretreatment and the organic substrate concentration. Response surface methodology (RSM) was used to estimate the effect of the beating pretreatment in terms of pretreatment time (5-10-15 min) and organic matter concentration in terms of volatile solids (VS) (1-2.5-4%) on methane production. The highest methane yield of 342 ± 17 ml g À1 VS was observed during November at 1% of VS and after 5 min of pretreatment, while the lowest yields were registered in March with an average of 163 ± 28 ml g À1 VS. However, an enhancement of 47% with respect to the untreated sample was achieved at 2.5% of VS and after 15 min of pretreatment, in March.

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Section: Energy Evaluationmentioning

confidence: 99%

Optimisation of biogas production from the macroalgae Laminaria sp. at different periods of harvesting in Ireland

et al. 2016

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“…A comparison of energy output between the products of thermochemical processing and products of bio-chemical conversions such as fermentation and anaerobic digestion (AD) indicate that the thermochemical processing (34 MJ/kg brown algae ) has higher energy output than those of bio-chemical conversions (7.9 MJ/kg brown algae for fermentation and 8.3 MJ/kg brown algae for AD) [68]. However, the high energy density for drying of feedstock, combustion reaction, distillation, and catalytic upgrading need to be carefully reduced for expanding large scale production.…”

Section: Bio-oilmentioning

confidence: 99%

Marine brown algae: A conundrum answer for sustainable biofuels production

Song

Pham

Seon

et al. 2015

Renewable and Sustainable Energy Reviews

112

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“…In order to study the energy of the resultant products compared to the energy input of the material the energy recovery ratio (ERR) was used as proposed by Anastasakis and Ross (2015). The energy recovery of starting material to bio-oil and to solid residue was calculated according to the following equation:…”

Section: Energy Recoverymentioning

confidence: 99%