Exploring lignocellulosic biomass for bio-methane potential by anaerobic digestion and its economic feasibility

Abstract

Anaerobic digestion is a process to convert organic biomass into bio-methane. Plenty of produced waste in Pakistan is enough to compensate energy thirst of country and have potential to replace costly fossil fuels. The lignocellulosic biomass such as wheat straw, almond shell, sugarcane bagasse, maize straw and corn cob were subjected to bio-methane potential assay after proximate, ultimate and chemical analysis. These chemical fractions provide better understanding about theoretically predicating bio-methane potentials such as neutral detergent fibre, acid detergent fibre, acid detergent lignin, cellulose, hemicellulose, carbohydrates, proteins and elemental analysis. Experimental bio-methane potentials were found, 267.74 (wheat straw), 255.32 (almond shell), 222.23 (corn cob), 247.60 (sugar cane bagasse) and 293.12 ml/g (maize straw) volatile solids and was much less than predicted methane potential. The energy content on dry basis and methane potential has been assessed to find economic feasibility of biomass. The biodegradability and methane potential inversely related to the lignin content of biomass. Bioenergy production from biomass is economically favourable. The volatile fatty acids were produced in the percentage of 53–58% acetic acid, 30–35% butyric acids and 6–13% propionic acid and showed same metabolic pathway and types of bacteria involved in digestion.

Keywords

Anaerobic digestion acid detergent lignin wheat straw almond shell corn cob sugarcane bagasse maize straw

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References

Wall

O’Kiely

Murphy

JD.

The potential for biomethane from grass and slurry to satisfy renewable energy targets. Bioresour Technol 2013; 149: 425–431.

Murphy

Power

NM.

An argument for using biomethane generated from grass as a biofuel in Ireland.

Biomass Bioenergy 2009; 33: 504–512.

Appels

Lauwers

Degrève

et al . Anaerobic digestion in global bio-energy production: potential and research challenges. Renew Sustain Energ Rev 2011; 15: 4295–4301.

Nizami

Korres

Murphy

JD.

Review of the integrated process for the production of grass biomethane.

Environ Sci Technol 2009; 43: 8496–8508.

Spellman

FR.

Handbook of water and wastewater treatment plant operations. Washington, D.C: CRC Press, 2013.

Faithfull

NT.

Methods in agricultural chemical analysis: a practical handbook. UK: Cabi, 2002.

Labconco

A guide to Kjeldahl nitrogen determination methods and apparatus. Houston, TX: Labconco Corporation, 1998.

Buswell

Mueller

Mechanism of methane fermentation.

Ind Eng Chemistry 1952; 44: 550–552.

Lesteur

Bellon

Gonzalez

et al . Alternative methods for determining anaerobic biodegradability: a review. Process Biochem 2010; 45: 431–440.

10.

Raposo

Fernández

De la Rubia

et al . Biochemical methane potential (BMP) of solid organic substrates: evaluation of anaerobic biodegradability using data from an international interlaboratory study. J Chem Technol Biotechnol 2011; 86: 1088–1098.

11.

Nielfa

Cano

Fdz-Polanco

Theoretical methane production generated by the co-digestion of organic fraction municipal solid waste and biological sludge.

Biotechnol Reports 2015; 5: 14–21.

12.

Angelidaki

Sanders

Assessment of the anaerobic biodegradability of macropollutants.

Rev Environ Sci Biotechnol 2004; 3: 117–129.

13.

Apha

and WEF. Standard methods for the examination of water and wastewater. American Public Health Association (APHA) Washington, DC 2005; 21: 258–259.

14.

Apha

Clesceri

Greenberg

AE.

Standard methods for the examination of water and wastewater. 20th ed. Washington, DC: American Public Health Association, 1998.

15.

Chandler

Jewell

Gossett

et al . Predicting methane fermentation biodegradability. Biotechnol Bioeng 1980; 22: 93–107. Ithaca, NY: Cornell Univ.

16.

Chandra

Takeuchi

Hasegawa

Methane production from lignocellulosic agricultural crop wastes: a review in context to second generation of biofuel production.

Renew Sustain Energ Rev 2012; 16: 1462–1476.

17.

Das

Kundu

Kumar

et al . Fractionation of carbohydrate and protein content of some forage feeds of ruminants for nutritive evaluation. Vet World 2015; 8: 197–204.

18.

Carpita

NC.

Structure and biogenesis of the cell walls of grasses.

Annu Rev Plant Biol 1996; 47: 445–476.

19.

Ali

Shah

Afzal

et al . Evaluating the co-digestion effects on chicken manure and rotten potatoes in batch experiments. Int J Biosci 2017; 10: 150–159.

20.

Siegert

Banks

The effect of volatile fatty acid additions on the anaerobic digestion of cellulose and glucose in batch reactors.

Process Biochem 2005; 40: 3412–3418.

21.

Wang

Kuninobu

Ogawa

et al . Degradation of volatile fatty acids in highly efficient anaerobic digestion. Biomass Bioenerg 1999; 16: 407–416.

22.

Lin

Solid-state anaerobic co-digestion of spent mushroom substrate with yard trimmings and wheat straw for biogas production.

Bioresour Technol 2014; 169: 468–474.

23.

Gunaseelan

VN.

Biochemical methane potential of fruits and vegetable solid waste feedstocks.

Biomass Bioenerg 2004; 26: 389–399.

24.

Song

Liu

Yan

et al . Comparison of seven chemical pretreatments of corn straw for improving methane yield by anaerobic digestion. PLoS One 2014; 9: e93801.