The effect of pretreatment methods with acid (1.5% H2SO4), alkali (2% NaOH) and liquid hot water (180°C) on anaerobic digestion (AD) performance of Dicranopteris dichotoma and Phytolacca americana L were investigated in this paper. The results indicated that the removal rate of lignin varied with different pretreatments at order: alkali > acid > liquid hot water, 52.84% and 48.62% lignin were removed from the Dicranopteris dichotoma and Phytolacca americana L with alkali pretreatment, respectively. The yield of methane production with alkali pretreatment was also the highest, which was 134.62 mL/g VS and 260.40 mL/g VS, respectively, 53.62% and 79.38% higher than untreated. The lignin removal rate was lower by acid and liquid hot water with Dicranopteris dichotoma, which was 23.61% and 4.52%, respectively, 31.68% and 5.67% for Phytolacca americana L, respectively. In addition, acid and liquid hot water had good performance on methane production with Dicranopteris dichotoma as well, which was 33.08% and 38.62% higher than untreated; however, there was no obviously improvement with Phytolacca americana L (7.83% higher with acid and 3.42% lower with liquid hot water). The alkali pretreatment had significant effect on methane production, and Phytolacca americana L had better potential for methane production than Dicranopteris dichotoma.
LU Tao
,
XING Tao
,
SUN Yong-ming
,
HE Yu
,
REN Hai-wei
,
LI Jin-ping
. Effect of Different Pretreatments on Efficiency of Anaerobic Digestion of Dicranopteris Dichotoma and Phytolacca Americana L[J]. Advances in New and Renewable Energy, 2019
, 7(6)
: 473
-479
.
DOI: 10.3969/j.issn.2095-560X.2019.06.001
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