Storing energy crops for methane production: Effects of solids content and biological additive

In Mexico, protected agriculture generates large amounts of tomato and pepper plants residues (TPW and PPW, respectively). Given the limited information on methane production from anaerobic digestion of these wastes, this study aimed to determine the effects of the substrate/inoculum (S/I) ratio, temperature, and total solids content on methane production and volatile solids (VS) removal by two subsequent batch experiments (Experiments A and B). Experiment A was performed to evaluate the substrate/inoculum ratios of 0.5, 1.0, and 2.0 at room temperature (22 ± 4.5 °C). Based on the best methane yield from experiment A, a new experiment was established (Experiment B) using only tomato wastes, where temperature was kept at 29 °C and 39 °C. The total solids content was analyzed depending on the S/I ratio used. For both substrates, an S/I ratio of 0.5 was the most appropriate for methane production. The temperature had a positive effect on volatile solids removal and methane yield. In contrast, the total solids content (% TS) only had a positive effect on methane production. To the authors’ knowledge, this is the first study evaluating the effect of the S/I ratio on methane production from tomato and pepper plant wastes.

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Anaerobic digestion of high-yielding tropical energy crops for biomethane production: Effects of crop types, locations and plant parts

Bioresource Technology ◽

10.1016/j.biortech.2018.04.062 ◽

2018 ◽

Vol 262 ◽

pp. 194-202 ◽

Cited By ~ 11

Author(s):

K.C. Surendra ◽

Richard Ogoshi ◽

Annett Reinhardt-Hanisch ◽

Hans Oechsner ◽

Halina M. Zaleski ◽

...

Keyword(s):

Anaerobic Digestion ◽

Energy Crops ◽

Plant Parts ◽

Crop Types ◽

Biomethane Production ◽

Production Effects

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Methane production from the co-digestion of pig manure and corn stover with the addition of cucumber residue: Role of the total solids content and feedstock-to-inoculum ratio

Bioresource Technology ◽

10.1016/j.biortech.2020.123172 ◽

2020 ◽

Vol 306 ◽

pp. 123172 ◽

Cited By ~ 3

Author(s):

Yaya Wang ◽

Jiaxing Zhang ◽

Yangyang Li ◽

Shufei Jia ◽

Yang Song ◽

...

Keyword(s):

Corn Stover ◽

Methane Production ◽

Pig Manure ◽

Total Solids ◽

Solids Content

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High yielding tropical energy crops for bioenergy production: Effects of plant components, harvest years and locations on biomass composition

Bioresource Technology ◽

10.1016/j.biortech.2017.12.044 ◽

2018 ◽

Vol 251 ◽

pp. 218-229 ◽

Cited By ~ 12

Author(s):

K.C. Surendra ◽

Richard Ogoshi ◽

Halina M. Zaleski ◽

Andrew G. Hashimoto ◽

Samir Kumar Khanal

Keyword(s):

Energy Crops ◽

Biomass Composition ◽

Bioenergy Production ◽

Production Effects ◽

Plant Components

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Modified batch anaerobic digestion assay for testing efficiencies of trace metal additives to enhance methane production of energy crops

Environmental Technology ◽

10.1080/09593330.2013.808251 ◽

2013 ◽

Vol 34 (13-14) ◽

pp. 2047-2058 ◽

Cited By ~ 12

Author(s):

Mathieu Brulé ◽

Rainer Bolduan ◽

Stephan Seidelt ◽

Pascal Schlagermann ◽

Armin Bott

Keyword(s):

Anaerobic Digestion ◽

Trace Metal ◽

Methane Production ◽

Energy Crops ◽

Metal Additives

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Effects of ultrasonic pre-treatment on sludge characteristics and anaerobic digestion

Water Science & Technology ◽

10.2166/wst.2012.415 ◽

2012 ◽

Vol 66 (11) ◽

pp. 2284-2290 ◽

Cited By ~ 19

Author(s):

Lise Appels ◽

Sofie Houtmeyers ◽

Floriaan Van Mechelen ◽

Jan Degrève ◽

Jan Van Impe ◽

...

Keyword(s):

Anaerobic Digestion ◽

Specific Energy ◽

Methane Production ◽

Ultrasonic Treatment ◽

Waste Activated Sludge ◽

Sludge Characteristics ◽

Production Increase ◽

Pre Treatment ◽

Solids Content ◽

The Relationship

In this work, the influence of an ultrasonic pre-treatment on anaerobic digestion of waste activated sludge is studied. Attention is paid to the solubilisation of the main organic (proteins, carbohydrates) and inorganic (heavy metals) sludge components during ultrasonic treatment and the influence of the dry solids content (DS) on the degree of solubilisation. The second part of the paper focuses on the relationship between the applied specific energy of the ultrasonic treatment and methane production. In general, a higher specific energy and a higher DS content are beneficial for the release of organic matter, resulting in an increased methane production. The efficiency of the subsequent anaerobic digestion is similar for both sludge types (2.1 and 3.2% DS). However, at lower DS contents (2.1%), the methane production increase was more significant.

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