The Feasibility of Methane Production from Dairy Animal Wastes PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Feasibility of Methane Production from Dairy Animal Wastes PDF full book. Access full book title The Feasibility of Methane Production from Dairy Animal Wastes by Douglas Braithwaite (C.). Download full books in PDF and EPUB format.
Author: Douglas Braithwaite (C.)
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 90
Get Book Here
Book Description
Author: Douglas Braithwaite (C.)
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 90
Get Book Here
Book Description
Author: Esteban Manuel Zamudio Cañas
Publisher:
ISBN:
Category :
Languages : en
Pages : 104
Get Book Here
Book Description
The largest waste stream from agricultural livestock activity is manure. Efforts herein focus on the improvement of anaerobic digestion of animal wastes which creates a stable solid residue and recovers energy in the form of methane. Co-digestion of chicken litter (CL) and dairy manure (DM) was studied using stirred reactors at mesophilic temperature (35 °C) to evaluate the feasibility of co-digesting these two substrates by varying the organic loading rate (OLR) using increasing amounts of chicken litter. The results indicate that chicken litter and dairy manure can be successfully co-digested with chicken litter present at up to 33% of Volatile Solids (VS) in the feedstock (OLR 1.5("0.03) gVS L[subscript reactor] −1 day−1). Synergistic and/or antagonistic effects were not observed in terms of methane production. It was also found that reactors reach a dynamic stability 7 days after increasing the organic loading rate. While both total and free ammonia tolerance of the bioreactors solids improved by combining these two substrates, true adaptation was only observed for free ammonia which increased as the proportion of CL was increased. No improvement in pathogen indicator removal was detected. Other co-digestion experiments were performed in batch reactors using filtered dairy manure solids (FDMS), grease trap waste (GTW), and sawdust (S). Manure solids (0.417 and 0.842 mm) was present at up to 70% as VS in feedstock and increased total methane production by 114"2 %, but decreased efficiency (methane yield) by 59"14 %. Grease trap waste alone was difficult to degrade, but co-digestion improved efficiency and VS removal of dairy manure alone by 111"9 % and 76"4%, respectively, for all additions tested. In contrast, sawdust could not be degraded reducing efficiency in all additions tested. Finally, adaptation to different temperatures was evaluated in batch reactors. Microbial population could adapt to lower temperatures down to 19 °C with an acceptable decrease in methane production, but longer retention times were needed. At a 20 days retention time, methane production decreased by only 10% when the temperature decreased from 35 to 25 °C.
Author: Canada. Department of Agriculture
Publisher:
ISBN:
Category : Animal waste
Languages : en
Pages :
Get Book Here
Book Description
Author: Hobson
Publisher: Springer Science & Business Media
ISBN: 9400981023
Category : Science
Languages : en
Pages : 343
Get Book Here
Book Description
This volume in the Energy from Wastes Series covers the area of methane production from agricultural and domestic wastes. Principally this involves the conversion of excreta and other organic effluents to a valuable gaseous fuel plus, in many cases, a useful sludge for fertiliser or feedstuffs. Dr Hobson and his colleagues have written a comprehensive text on the principles of microbiological processes and the biochemistry of anaerobic digestion, embracing the design of digesters with examples of current working installations. The potential for anaerobic digestion of wastes as diverse as sewage to fruit processing effluents is also reviewed. This work should be of interest to all who have to manage organic waste treatment and disposal, as well as to a wider readership who wish to know more about methane production by anaerobic digestion. ANDREW PORTEOUS v Preface The production of methane, or more exactly, a flammable 'biogas' containing methane and carbon dioxide, by microbiological methods ('anaerobic digestion') is not new. The reactions have been in industrial use for over a hundred years, but only in sewage purification processes. In some times of national stress, such as war-time, the microbiological production of gas purely for fuel has been investigated, but with the resumption of plentiful su pplies of fossil fuels the investigations have faded awa y.
Author: Resource Conservation Management, Inc
Publisher:
ISBN:
Category : Dairy cattle
Languages : en
Pages : 35
Get Book Here
Book Description
Author: Thom G. Edgar
Publisher:
ISBN:
Category : Dairy waste
Languages : en
Pages : 182
Get Book Here
Book Description
With the expansion of the Tillamook Creamery, in Tillamook Oregon, to double or more its cheese production, the demand for milk presents an economic opportunity for the member dairies of the Tillamook County Creamery Association. Before area dairies can expand their herd size to increase milk production for the creamery, the problem of manure waste management and pollution control must be solved. This study considers the technical and economic feasibility of developing a centralized waste treatment and methane generation facility to treat manure generated by Tillamook County dairies. A computer program modeling animal waste anaerobic digester design served as the basis for generating cost and production estimates for several hypothetical scenarios assuming input data specific to the Tillamook situation. A follow up study was also made to determine the variability of the potential ultimate methane yield of manures from Tillamook dairies. This study indicates that the proposed system is technically feasible. The study estimates that a comprehensive treatment system could cost dairymen from $70 to $100 per cow per year to start, but the economic feasibility improves as more manure is treated and more dairies participate. A full scale system has the potential to break even economically from the sale of electricity produced by a 5 megawatt methane powered generator. With the marketing of treated solids as a high grade fertilizer the system could gross a return of $1 to $75 per cow per year, depending on the scenario.
Author: Michael H. Scholla
Publisher:
ISBN:
Category : Agricultural wastes
Languages : en
Pages : 165
Get Book Here
Book Description
Author: Herbert M. Lapp
Publisher:
ISBN:
Category : Manure gases
Languages : en
Pages : 68
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 700
Get Book Here
Book Description
Author: Michael J. Gibbs
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 122
Get Book Here
Book Description
