National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The aim of this study is to analyze the potential to enhance biogas production from papermill sludge by the use of alkali pretreatment. The pH of the initial samples were in the range of7.25 – 7.63 and that of final slurry samples were 6.5 – 7.0.The total solid and volatile solid content for raw paper mill sludge and pretreated papermill sludge were found to be 37.2%, 18.90% and 60.98%, 50.47% respectively. In laboratory experiments, the maximum total gas production was observed in 75% pretreated paper mill sludge substitution with the minimum and maximum total gas production was 75,090 ml and 79,340 ml respectively. For field experiments, the maximum gas production of 252 liter/kg dry matter was recorded in 90% alkali pretreated paper mill sludge substitution. It is clear that alkali/NaOH pretreatment enhance the biogas production and effectively utilized the paper mill sludge up to 90% replacement from 60% (Untreated PMS), which shows that alkali pretreatment could be an effective method for improving methane yield in paper mill sludge.
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