How many weeks does a batch digester need to produce biogas?(a) 1 week(b) 2 – 4 week(c) 12 week(d) 4 – 8 weekI got this question by my college director while I was bunking the class.This key question is from Anaerobic Fermentation in chapter Biomass Energy of Energy Engineering

How many weeks does a batch digester need to produce biogas?(a) 1 week

1.	How many weeks does a batch digester need to produce biogas?(a) 1 week(b) 2 – 4 week(c) 12 week(d) 4 – 8 weekI got this question by my college director while I was bunking the class.This key question is from Anaerobic Fermentation in chapter Biomass Energy of Energy Engineering
Answer» Right option is (b) 2 – 4 week To explain: Depending on the waste material and operating temperature, a batch DIGESTER will start producing BIOGAS after 2 – 4 weeks, slowly INCREASE in production then drop off after three or 4 months. Batch digesters are therefore best OPERATED in GROUPS.

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