Lime pretreatment to improve methane production of smooth cordgrass (Spartina alterniflora)

Liang, Yue-gan; Zhang, Zheng; Luo, Xingzhang; Si, Youbin; Cao, De-ju; Nie, Er; Cheng, Beijiu

doi:10.1016/j.cej.2012.11.135

Cited by 16 publications

(8 citation statements)

References 34 publications

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“…In order to assess the best pretreatment condition, two lime (Akdolit ® Q90; purity ≥ 92%) doses were tested: 4 and 10% CaO on a TS basis, based on the common doses used when applying this pretreatment [21]. According to the literature, lime pretreatment requires long exposure times, ranging from several days to weeks, which can be reduced by increasing temperature [18].…”

Section: Microalgae Pretreatmentmentioning

confidence: 99%

Enhancement of microalgae anaerobic digestion by thermo-alkaline pretreatment with lime (CaO)

et al. 2017

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The aim of this study was to evaluate for the first time the effect of a thermo-alkaline pretreatment with lime (CaO) on microalgae anaerobic digestion. The pretreatment was carried out by adding different CaO doses (4 and 10%) at different temperatures (room temperature (25 °C), 55 and 72 °C). The exposure time was 4 days for pretreatments at 25 °C, and 24 h for pretreatments at 55 and 72 °C. Following, a biochemical methane potential test was conducted with pretreated and untreated microalgae. According to the results, the pretreatment enhanced proteins solubilisation by 32.4% and carbohydrates solubilisation by 31.4% with the highest lime dose and temperature (10% CaO and 72 °C). Furthermore, anaerobic digestion kinetics were improved in all cases (from 0.08 to 0.14 day- 1 for untreated and pretreated microalgae, respectively). The maximum biochemical methane potential increase (25%) was achieved with 10% CaO at 72 °C, in accordance with the highest biomass solubilisation. Thus, lime pretreatment appears as a potential strategy to improve microalgae anaerobic digestion.Peer ReviewedPostprint (author's final draft

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Section: Microalgae Pretreatmentmentioning

confidence: 99%

Enhancement of microalgae anaerobic digestion by thermo-alkaline pretreatment with lime (CaO)

et al. 2017

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“…This indicates pretreatment removed much of the polysaccharide, but not the lignin. In wet-state lime pretreatment, 10.2e36.2% lignin and all of acetyl group were removed, so the biodegradation of lignocelluloses biomass and the methane yield was improved [28]. This is because of the low mass transfer in the solid-state conditions [29] and the short-term pretreatment of weak alkali in this study.…”

Section: Changes In Rice Straw Compositionmentioning

confidence: 96%

Physicochemical changes of rice straw after lime pretreatment and mesophilic dry digestion

Liang

Cheng

et al. 2014

Biomass and Bioenergy

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“…The pretreatment conditions and biomass components are shown in Table 1. The pretreatment operation was reported in detail elsewhere (Liang et al 2013). The dried samples (about 10 g) were then ground and passed through a 100-mesh screen for TGA, FTIR, and NMR analyses.…”

Section: Smooth Cordgrassmentioning

confidence: 99%

Thermogravimetric analysis and structure change of lime-pretreated Spartina alterniflora

Liang

Cheng

Liang

et al. 2016

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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The thermal behavior and structure change of Spartina alterniflora pretreated with lime were investigated with raw and water-soaked samples for comparisons. Pretreatment significantly changed thermal decomposition behavior and activation energy. The activation energy of S. alterniflora ranged from 100.7 to 128 kJ/mol at the main decomposition stage. FTIR and solid-state 13 C NMR analyses revealed that pretreatment disrupted the carboxyl carbons attached to the lignin side chain. Compared with water soaking, lime pretreatment resulted in more modifications of structure and composition. Furthermore, structure breakage and composition removal change the pyrolysis characteristics of pretreated samples.

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Lime pretreatment to improve methane production of smooth cordgrass (Spartina alterniflora)

Cited by 16 publications

References 34 publications

Enhancement of microalgae anaerobic digestion by thermo-alkaline pretreatment with lime (CaO)

Enhancement of microalgae anaerobic digestion by thermo-alkaline pretreatment with lime (CaO)

Physicochemical changes of rice straw after lime pretreatment and mesophilic dry digestion

Thermogravimetric analysis and structure change of lime-pretreated Spartina alterniflora

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