Hydrothermal processing of duckweed: Effect of reaction conditions on product distribution and composition

Duan, Pei-Gao; Chang, Zhoufan; Xu, Yu-Ping; Bai, Xiujun; Wang, Feng; Zhang, Lei

doi:10.1016/j.biortech.2012.08.106

Cited by 100 publications

(44 citation statements)

References 26 publications

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“…About 21.3 wt.% gas yield was obtained at a catalyst loading of 30 wt.%. A similar gas yield trend as a function of catalyst loading was also observed in the hydrothermal processing of duckweed with K 2 CO 3 [23]. Possibly, the major component (CO 2 ) of gaseous product reacted with the catalyst to form bicarbonate, thereby decreasing the total gaseous product yield.…”

Section: Effect Of Catalyst Loadingsupporting

confidence: 62%

“…Previous studies [22,23] suggested that processing temperature was always the most influential factor affecting the yields of product fractions during the hydrothermal conversion of biomass. Therefore, the effect of temperature was investigated by varying the temperature from 250 to 390°C with fixed reaction time and an A/W mass ratio of 60 min and 2.5/8.4, respectively.…”

Section: Effect Of Temperaturementioning

confidence: 99%

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Hydrothermal processing of macroalgae for producing crude bio-oil

Duan

Wang

2015

Fuel Processing Technology

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Section: Effect Of Catalyst Loadingsupporting

confidence: 62%

Section: Effect Of Temperaturementioning

confidence: 99%

Hydrothermal processing of macroalgae for producing crude bio-oil

Duan

Wang

2015

Fuel Processing Technology

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“…Kandukuri et al (2009) reported alkaloids, phenols, and steroids in methanol extracts from water hyacinth. Squalene has been reported in other aquatic plants, such as duckweed (Duan et al 2012), although no references were found regarding the presence of this terpenoid in water hyacinth.…”

Section: Resultsmentioning

confidence: 95%

GC/MS Analysis of Some Extractives from Eichhornia crassipes

et al. 2015

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Eichhornia crassipes (water hyacinth) is an invasive weed that causes serious issues for rivers, lakes, and other reservoirs around the world, although it can be an excellent source for bioactive compounds such as phytosterols and some steroids found in many plants. In this study, water hyacinth samples from both Durango and Distrito Federal in Mexico were collected. Ascendant extracts (cyclohexane, hexane, acetone, and methanol) from their leaves, stems, and roots were analyzed. Using boron trifluoride (~10% [~1.3 M] in 1-butanol), all extracts were derivatized. Twenty-four derivatized samples were analyzed using a gas chromatography-mass spectrometry (GC/MS) method. Twenty carboxylic acids were found, as well as squalene, which was found in nine extract samples: four cyclohexane extracts, one hexane extract, three acetone extracts, and two methanol extracts. A compound not reported before, -stigmasterol, was identified on three hexane extracts, an acetone extract, and a methalonic extract. Spirostane in acetone root extract and cholestane in cyclohexane stem-leaf extract were also identified.

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“…So, in this process, there is possibility of upgrading process in order to maximize the quality yield of the system. Duan et al [57] in their study upgraded the liquefaction process coupling it with pyrolysis system to convert Lemna sp. biomass into alternative energy products.…”

Section: Potential Of Duckweed Biomass In Renewable Energy Operationsmentioning

confidence: 99%

“…Besides having several benefits, the production and utilization of duckweed feedstock also admit several challenges that need to get target for better resource utilization. An improved biomass collection network and storage is the main challenge for the establishment of commercial bioenergy feedstock platform [57]. Transportation, storage and logistic requirements need address for economically viable bioenergy production.…”

Section: Biomass-based Energy Production and Duckweed: Challenges Andmentioning

confidence: 99%

Utility of Duckweeds as Source of Biomass Energy: a Review

Verma

Suthar

2015

Bioenerg. Res.

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The quest for alternative sources of energy has evoked the interest in exploring potentials of living biological wastes as new energy materials. Duckweeds are produced abundantly as weeds in freshwater surface bodies and can be a source of biomass for bioenergy productions. There are approximately 40 species of this group worldwide belonging to five genera (Spirodela, Lemna, Wolfiella, Wolffia and Landoltia). The structural peculiarities (small plant size, limited life cycle, high duplication rate, etc.) and chemical characteristics (dry weight basis): 17.6-35 % (carbohydrate), 21-38 % (starch), 16-41.7 % (crude protein), 8.8-15.6 % (crude fibre) and 4.5-9 % (lipid) make duckweed as possible feedstock for biomass-based energy operations. The high contents of valuable fatty acids (palmitic acid and linoleic acid) and starch (3-75 %) in duckweed biomass suggest its utility in biorefinery. Recent lab-scale studies have shown remarkable results in terms of energy yield during the processes like anaerobic digestion, incineration, pyrolysis, gasification, oxidation, etc. Another good quality of duckweeds is its hyperaccumulative properties for a variety of water pollutants. Therefore, this group of weeds has been recommended widely for designing on-site phytoremediation system for community wastewater treatment. Thus, duckweed technology can be adopted as coupled technology to harness two environmental approaches, i.e. wastewater treatment and energy biomass production for sustainable development of the human society.

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Hydrothermal processing of duckweed: Effect of reaction conditions on product distribution and composition

Cited by 100 publications

References 26 publications

Hydrothermal processing of macroalgae for producing crude bio-oil

Hydrothermal processing of macroalgae for producing crude bio-oil

GC/MS Analysis of Some Extractives from Eichhornia crassipes

Utility of Duckweeds as Source of Biomass Energy: a Review

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