BIOGAS PRODUCTION FROM CATTLE DUNG INOCULATED WITH SHREDDED COTTON STALKS.
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Date
2019-08-31
Authors
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Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
The project entitled “Biogas production from cattle dung inoculated with shredded cotton stalks” was undertaken to evaluate the performance of 2 m3 modified Janta biogas plant using cattle dung and cattle dung inoculated with shredded cotton stalks. The average particle size of cotton stalk was found to be 1.78 mm. The proximate analysis of cotton stalk determined the average moisture content, volatile matter, ash content and fixed carbon and it was found to be 7.20, 68.80, 5.40 and 18.60 %, respectively. The ultimate analysis of cotton stalk determined the carbon, hydrogen, nitrogen and oxygen content and it was found to be 52.02, 6.51, 0.72, and 35.35 %, respectively. The total cumulative biogas production from cattle dung for the month of August, December, February and April was 141114 liter whereas the total cumulative biogas production from cattle dung inoculated with shredded cotton stalks for the month of September, January, March and May was 158809 liter. The total cumulative biogas production from both feed stocks was found to be 299923 liter. The total average methane content of biogas from cattle dung for the month of August, December, February and April was 56.92 % whereas the total average methane content of biogas production from cattle dung inoculated with shredded cotton stalks for the month of August, December, February and April was 59.59 %. The total average methane content from both feed stocks was found to be 58.25 %. The total average pH of the cattle dung slurry for the month of August, December, February and April before digestion (BD) and after digestion (AD) was found to be 7.10 and 6.88, respectively whereas the total average pH of the cattle dung inoculated with shredded cotton stalks slurry for the month of September, January, March and May before digestion (BD) and after digestion (AD) was found to be 7.39 and 7.16, respectively. The total average NPK content of the cattle dung slurry for the month of August, December, February and April before digestion (BD) was found to be 1.14, 0.74 and 0.55 %, respectively while after digestion (AD) it was 1.37, 0.89 and 0.65 %, respectively. Whereas the total average nitrogen, phosphorus and potassium (NPK) content of the cattle dung inoculated with shredded cotton stalks slurry for the month of September, January, March and May before digestion (BD) was found to be 1.20, 0.80 and 0.56 %, respectively while after digestion (AD) it was 1.47, 0.91 and 0.70 %, respectively. The percentage increase in NPK content of the cattle dung slurry after digestion was found to be 17.30, 17.65 and 15.38 %, respectively whereas the percentage increase in NPK content of the cattle dung inoculated with shredded cotton stalks slurry after digestion was found to be 18.26, 11.81 and 19.42 %, respectively. Overall results indicated that the cattle dung (75 %) and cotton stalk (25 %) substrate mixed in equal proportion of water ratios as 1:1 gave sufficient biogas production and observed higher methane content in the month of May-2019. The biogas production may vary with respect to change in temperature and revealed that increased slurry temperature affects biogas production positively. The chemical analysis of slurry suggested that the increased in NPK content after digestion. Hence in the area where cotton stalks are available, cattle dung inoculated with shredded cotton stalks (75:25) may be used as an alternative feed stock for production of biogas.
Description
In Vidarbha and other region of Maharashtra, cotton crop has been grown predominantly as a cash crop. Cotton waste (cotton plant stalk, cotton leaves and cotton seed hulls) is one of the agricultural waste that is considered as ‘‘Energy source’’. In this study the attempt was made to produce biogas from cattle dung inoculated with shredded cotton stalks and evaluate their performance using cotton stalk substrate.
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Citation
SHEIKH, MOHD ZAQI S/o AHID MOHD. (2019). Biogas production from cattle dung inoculated with shredded cotton stalks. Department of Renewable Energy Sources (Agricultural Engineering), Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Tech. 2019. Print. xviii, 130p. (Unpublished).