Leaching characteristics of poultry litter in first phase of multistage anaerobic digestion

Authors

  • Surya P Sunkavalli Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Tarnaka, Hyderabad
  • A Gangagni Rao Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Tarnaka, Hyderabad
  • P Swapnalata Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Tarnaka, Hyderabad
  • M Zaheer Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Tarnaka, Hyderabad

DOI:

https://doi.org/10.3126/ije.v3i2.10516

Keywords:

Poultry litter, anaerobic digestion, biogas, VFA, leaching

Abstract

Poultry litter is highly biodegradable in nature. Therefore, it could be subjected to biomethanation to produce valuable biogas and bio-manure as byproducts. Some studies have been conducted along these lines in India by utilizing the poultry litter as a substrate in batch type dung digesters of KVIC and DENABANDHU models. However, these reactors have the drawbacks of high residence time (30 – 35 days), scum formation problems etc. Moreover, these batch type plants are not suitable for the treatment of large quantities of solid waste. Multistage anaerobic digestion has the potential to overcome some of the aforesaid issues. Anaerobic leaching experiments were conducted at different total solids concentration and pH using poultry litter in order to evaluate the leachate quality for a period of 7 days. The increase in Total solids (TS) % from 15 to 20% show inverse effect on VFA and Alkalinity. The change in pH from 8.5 to 5.5 didn’t show much impact on VFA but there is a small impact on alkalinity. It was also observed that the leaching of the organic matter in the solid to the liquid phase is very fast and it is taking place approximately in three to four days and subsequently leachate getting saturated. Therefore, reactor set up was made in the last phase to regularly remove the water from the reactor so that higher driving force is available for leaching. The study resulted in leaching of maximum organic content in the solid to liquid within three days.

DOI: http://dx.doi.org/10.3126/ije.v3i2.10516

International Journal of the Environment Vol.3(2) 2014: 76-82

Downloads

Download data is not yet available.
Abstract
890
PDF
740

Downloads

Published

2014-05-30

How to Cite

Sunkavalli, S. P., Rao, A. G., Swapnalata, P., & Zaheer, M. (2014). Leaching characteristics of poultry litter in first phase of multistage anaerobic digestion. International Journal of Environment, 3(2), 76–82. https://doi.org/10.3126/ije.v3i2.10516

Issue

Vol. 3 No. 2 (2014)

Section

Research Papers

License

The author(s) acknowledge that the manuscript submitted is his/her/their own original work; all authors participated in the work in a substantive way and are prepared to take public responsibility for the work; all authors have seen and approved the manuscript as submitted;  the manuscript has not been published and is not being submitted or considered for publication elsewhere; the text, illustrations, and any other materials included in the manuscript do not infringe(plagiarism) upon any existing copyright or other rights of anyone.

Notwithstanding the above, the Contributor(s) or, if applicable the Contributor’s Employer, retain(s) all proprietary rights other than copyright, such as Patent rights; to use, free of charge, all parts of this article for the author’s future works in books, lectures, classroom teaching or oral presentations; the right to reproduce the article for their own purposes provided the copies are not offered for sale.

The copyright to the contribution identified is transferred to IJE.