Enhanced Methane Production from Peat with Rare Earth Compounds

被引：0

作者：

Hao S. ^{[1
]}

Ma L. ^{[1
,2
]}

Wang Y. ^{[1
,3
]}

Li J. ^{[4
]}

机构：

[1] School of Chemistry and Chemical Engineering, Inner Mongolia University of Science and Technology, Baotou

[2] Inner Mongolia Autonomous Region Engineering Research Center for Bio-chemical Engineering, Baotou

[3] Key Laboratory of Coal Chemical and Coal Comprehensive Utilization, Inner Mongolia Autonomous Region, Baotou

[4] School of Life science and Technology, Inner Mongolia University of Science and Technology, Baotou

来源：

Ma, Litong (mlt0916@126.com) | 1600年 / Editorial Office of Chinese Rare Earths卷 / 39期

关键词：

Anaerobic fermentation; Biogenic methane; CeCl[!sub]3[!/sub; Peat; YbCl[!sub]3[!/sub;

D O I：

10.11785/S1000-4343.20210212

中图分类号：

学科分类号：

摘要：

In order to solve the issue of low methane production of peat biomethane conversion and increase methane yield, the effect of rare earth compounds on microbial activity in this process was explored. Rare earth compounds with different concentrations of CeCl3 and YbCl3 were added to the peat biomethanation reaction system with meadow peat as raw materials, and the changes in daily methane production, total methane production, alkalinity, coenzyme F420 concentration, COD and glucose concentration during the fermentation were analyzed. The research results showed that at 50 ℃ fermentation temperature, peat biomethane fermentation for 24 d, with 200 mg•L-1 CeCl3 added, total methane production is 246.33 mL, which increases 21.31% compared with the control group, in addition, the alkalinity increases by 122.22%, coenzyme F420 concentration maintains at 1.53×10-3~2.59×10-3 mmol•L-1 on the 1st~9th day, COD removal rate is 46.18%, and the glucose concentration is 7.42% higher than that of the control group; after adding 200 mg•L-1 YbCl3, total methane production is 235.67 mL, an increase of 16.06% comparing with the control group, besides, the alkalinity increases 126.15%, coenzyme F420 concentration is kept at 1.89×10-3~2.83×10-3 mmol•L-1 on the 1st~12th day, COD removal rate is 44.31%, and the glucose concentration is 6.75% higher than that of the control group, which are significantly higher than the blank control group without rare earth compounds. It proves that the adding of rare earth compounds CeCl3 and YbCl3 is helpful to improve the activity of methanogens in peat methane fermentation system, increase the methane production, and promote the conversion process of peat biomethane. © 2021, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.

引用

页码：294 / 301

页数：7

共 26 条

[1] Hayes D J M, Hayes M H B, Leahy J J., Analysis of the lignocellulosic components of peat samples with development of near infrared spectroscopy models for rapid quantitative predictions, Fuel, 150, (2015)
[2] Opara A, Adams D J, Free M L, Mclennan J, Hamilton J., Microbial production of methane and carbon dioxide from lignite, bituminous coal, and coal waste materials [J], Int. J. Coal Geol, 96-97, 4, (2012)
[3] Alexander T, Sdal T, Sdal T, Tim U, Peter F, Mette Marianne S., Metabolic and trophic interactions modulate methane production by Arctic peat microbiota in response to warming [J], Proc. Nat. Acad. Sci. U.S.A, 112, 19, (2015)
[4] Wang Y B, Liu Z Y, Zhang D Y, Li Y L, Hu J H., Research progress on the mechanism of Hormesis effect of rare earth ions on microorganisms, Journal of the Chinese Society of Rare Earths, 37, 4, (2019)
[5] Gao X, Liu Y Q, Yan J J, Yang S Y, Zhao Q Q, Wang J Y., A preliminary study on mechanism of hormesis in lanthanum-escherichia coli, Journal of the Chinese Society of Rare Earths, 37, 3, (2019)
[6] Furst A., Hormetic effects in pharmacology: pharmacological inversions as prototypes for hormesis, Health Phys, 52, 5, (1987)
[7] Pol A, Barends T R, Dietl A, Khadem A F, Eygensteyn J, Jetten M S M, Op den Camp H J M., Rare earth metals are essential for methanotrophic life in volcanic mudpots [J], Environ. Microbiol, 16, 1, (2014)
[8] Luigi D, Massimo M, Mariaa C, Michele S, Marco VA, Marilena R, Matteo L, Francesco V, Khalid M, Sheridan L., Effect of some rare earth elements on the growth and lanthanide accumulation in different Trichoderma strains, Soil Biol. Biochem, 41, 12, (2009)
[9] Chai R J, Huang B, Wang Y L., Effect on resistance, growth and DNA of Bacillus cereus treated by La<sup>3+</sup> and Ce<sup>3+</sup>, Microbiology, 40, 12, (2013)
[10] Inaoka T, Ochi K., Undecaprenyl pyrophosphate involvement in susceptibility of bacillus subtilis to rare earth elements, Journal of Bacteriol, 194, 20, (2012)

← 1 2 3 →