Wagner AO, Schwarzenauer T, Illmer P (2013) Improvement of methane generation capacity by
aerobic pre-treatment of organic waste with a cellulolytic Trichoderma viride culture. J Environ
Manag 129:357–360
Wang L-H, Wang Q, Cai W, Sun X (2012) Influence of mixing proportion on the solid-state
anaerobic co-digestion of distiller’s grains and food waste. Biosyst Eng 112:130–137
Ward J, Hobbs PJ, Holliman PJ, Jones DL (2008) Optimisation of the anaerobic digestion of
agricultural resources. Bioresour Technol 99:7928–7940
Weiland P (2001) Biogas, an energy source with good future prospects; Biogas-ein
zukunftsweisender Energietraeger
Weiland P, Verstraete W, van Haandel A (2009) Biomass digestion to methane in agriculture: a
successful pathway for the energy production and waste treatment worldwide. In: Soetaert W,
Vandamme EJ (eds) Biofuels. Wiley, Hoboken, NJ, pp 171–196
Wellinger A, Wyder K, Metzler AE (1993) KOMPOGAS-a new system for the anaerobic treatment
of source separated waste. Water Sci Technol 27(2):153–158
Westerholm M, Müller B, Isaksson S, Schnürer A (2015) Trace element and temperature effects on
microbial communities and links to biogas digester performance at high ammonia levels.
Biotechnol Biofuels 8(154):2–19
Westerholm M, Isaksson S, Sun L, Schnürer A (2017) Microbial community ability to adapt to
altered temperature conditions influences operating stability in anaerobic digestion. Energy
Procedia 105:895–900
Westerholm M, Liu T, Schnürer A (2020) Comparative study of industrial-scale high-solid biogas
production from food waste: process operation and microbiology. Bioresour Technol
304:122981
Wheatley A (1991) Anaerobic digestion: a waste treatment technology. Elsevier Science Publishers
Ltd., London
Wilkins MR, Widmer WW, Grohmann K (2007) Simultaneous saccharification and fermentation of
citrus peel waste by Saccharomyces cerevisiae to produce ethanol. Process Biochem 42
(12):1614–1619
Wirth R, Kovács E, Maróti G, Bagi Z, Rákhely G, Kovács KL (2012) Characterization of a biogasproducing microbial community by short-read next generation DNA sequencing. Biotechnol
Biofuels 5(1):41
Wolfe RS (2011) Techniques for cultivating methanogens in methods in enzymology, vol 494.
Academic Press, Cambridge, MA, pp 1–22
Wu ZL, Lin Z, Sun ZY, Gou M, Xia ZY, Tang YQ (2020) A comparative study of mesophilic and
thermophilic anaerobic digestion of municipal sludge with high-solids content: reactor performance and microbial community. Bioresour Technol 302:122851
Xu F, Li Y (2012) Solid-state co-digestion of expired dog food and corn stover for methane
production. Bioresour Technol 118:219–226
Yang CM, Haung JS, Chang CT, Cheng YH, Chang CY (2004) Fermentation acids, aerobic fungal
growth and intake of napier grass ensiled with nonfiber carbohydrates. J Dairy Sci 87:630–636
Yangin-Gomec C, Ozturk I (2013) Effect of maize silage addition on biomethane recovery from
mesophilic co-digestion of chicken and cattle manure to suppress ammonia inhibition. Energy
Convers Manag 71:92–100
Yong Z, Dong Y, Zhang X, Tan T (2015) Anaerobic co-digestion of food waste and straw for
biogas production. Renew Energy 78:527–530
Zabed HM, Akter S, Yun J, Zhang G, Zhang Y, Qi X (2020) Biogas from microalgae: technologies,
challenges and opportunities. Renewable Sustainable Energy Rev 117:109503
Zeshan, Karthikeyan OP, Visvanathan C (2012) Effect of C/N ratio and ammonia-N accumulation
in a pilot-scale thermophilic dry anaerobic digester. Bioresour Technol 113:294–302
Zeynali R, Khojastehpour M, Ebrahimi-Nik M (2017) Effect of ultrasonic pre-treatment on biogas
yield and specific energy in anaerobic digestion of fruit and vegetable wholesale market wastes.
Sustain Environ Res 27:259–264
8 Bioprocess Parameters for Thermophilic and Mesophilic Biogas Production: Recent. . . 255
aerobic pre-treatment of organic waste with a cellulolytic Trichoderma viride culture. J Environ
Manag 129:357–360
Wang L-H, Wang Q, Cai W, Sun X (2012) Influence of mixing proportion on the solid-state
anaerobic co-digestion of distiller’s grains and food waste. Biosyst Eng 112:130–137
Ward J, Hobbs PJ, Holliman PJ, Jones DL (2008) Optimisation of the anaerobic digestion of
agricultural resources. Bioresour Technol 99:7928–7940
Weiland P (2001) Biogas, an energy source with good future prospects; Biogas-ein
zukunftsweisender Energietraeger
Weiland P, Verstraete W, van Haandel A (2009) Biomass digestion to methane in agriculture: a
successful pathway for the energy production and waste treatment worldwide. In: Soetaert W,
Vandamme EJ (eds) Biofuels. Wiley, Hoboken, NJ, pp 171–196
Wellinger A, Wyder K, Metzler AE (1993) KOMPOGAS-a new system for the anaerobic treatment
of source separated waste. Water Sci Technol 27(2):153–158
Westerholm M, Müller B, Isaksson S, Schnürer A (2015) Trace element and temperature effects on
microbial communities and links to biogas digester performance at high ammonia levels.
Biotechnol Biofuels 8(154):2–19
Westerholm M, Isaksson S, Sun L, Schnürer A (2017) Microbial community ability to adapt to
altered temperature conditions influences operating stability in anaerobic digestion. Energy
Procedia 105:895–900
Westerholm M, Liu T, Schnürer A (2020) Comparative study of industrial-scale high-solid biogas
production from food waste: process operation and microbiology. Bioresour Technol
304:122981
Wheatley A (1991) Anaerobic digestion: a waste treatment technology. Elsevier Science Publishers
Ltd., London
Wilkins MR, Widmer WW, Grohmann K (2007) Simultaneous saccharification and fermentation of
citrus peel waste by Saccharomyces cerevisiae to produce ethanol. Process Biochem 42
(12):1614–1619
Wirth R, Kovács E, Maróti G, Bagi Z, Rákhely G, Kovács KL (2012) Characterization of a biogasproducing microbial community by short-read next generation DNA sequencing. Biotechnol
Biofuels 5(1):41
Wolfe RS (2011) Techniques for cultivating methanogens in methods in enzymology, vol 494.
Academic Press, Cambridge, MA, pp 1–22
Wu ZL, Lin Z, Sun ZY, Gou M, Xia ZY, Tang YQ (2020) A comparative study of mesophilic and
thermophilic anaerobic digestion of municipal sludge with high-solids content: reactor performance and microbial community. Bioresour Technol 302:122851
Xu F, Li Y (2012) Solid-state co-digestion of expired dog food and corn stover for methane
production. Bioresour Technol 118:219–226
Yang CM, Haung JS, Chang CT, Cheng YH, Chang CY (2004) Fermentation acids, aerobic fungal
growth and intake of napier grass ensiled with nonfiber carbohydrates. J Dairy Sci 87:630–636
Yangin-Gomec C, Ozturk I (2013) Effect of maize silage addition on biomethane recovery from
mesophilic co-digestion of chicken and cattle manure to suppress ammonia inhibition. Energy
Convers Manag 71:92–100
Yong Z, Dong Y, Zhang X, Tan T (2015) Anaerobic co-digestion of food waste and straw for
biogas production. Renew Energy 78:527–530
Zabed HM, Akter S, Yun J, Zhang G, Zhang Y, Qi X (2020) Biogas from microalgae: technologies,
challenges and opportunities. Renewable Sustainable Energy Rev 117:109503
Zeshan, Karthikeyan OP, Visvanathan C (2012) Effect of C/N ratio and ammonia-N accumulation
in a pilot-scale thermophilic dry anaerobic digester. Bioresour Technol 113:294–302
Zeynali R, Khojastehpour M, Ebrahimi-Nik M (2017) Effect of ultrasonic pre-treatment on biogas
yield and specific energy in anaerobic digestion of fruit and vegetable wholesale market wastes.
Sustain Environ Res 27:259–264
8 Bioprocess Parameters for Thermophilic and Mesophilic Biogas Production: Recent. . . 255