High methane yields and stable operation during anaerobic digestion of nutrient-supplemented energy crop mixtures
(2012) In Biomass & Bioenergy 47. p.62-70- Abstract
- The feasibility of digesting energy crops supplemented with macro- and micronutrients instead of manure, without the commonly applied long hydraulic retention time (HRT), was investigated in long-term, single-stage continuous stirred tank processes. The crops used were mixtures of sugar beets, maize and whole crop triticale. The organic loading rate (OLR) measured as a total solid (TS) was 1.5-5.5 kg m(-3) d(-1) and the HRT from 30 to 40 days. The results showed high methane yields, comparable to those in batch digestion, and high stability. The digestion of beets only was most stable, and showed the highest average TS-based methane yield (383 +/- 26 m(3) kg(-1)) at an OLR of 4.5 kg m(-3) d(-1) and a HRT of 40 days. No significant... (More)
- The feasibility of digesting energy crops supplemented with macro- and micronutrients instead of manure, without the commonly applied long hydraulic retention time (HRT), was investigated in long-term, single-stage continuous stirred tank processes. The crops used were mixtures of sugar beets, maize and whole crop triticale. The organic loading rate (OLR) measured as a total solid (TS) was 1.5-5.5 kg m(-3) d(-1) and the HRT from 30 to 40 days. The results showed high methane yields, comparable to those in batch digestion, and high stability. The digestion of beets only was most stable, and showed the highest average TS-based methane yield (383 +/- 26 m(3) kg(-1)) at an OLR of 4.5 kg m(-3) d(-1) and a HRT of 40 days. No significant difference in methane yield was found for all the crop mixtures during stable operation. Nutrient addition therefore showed the same stimulatory and stabilising effects as manure with high methane yields achieved at relatively short HRTs. (c) 2012 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3568099
- author
- Ivo Achu, Nges LU and Björnsson, Lovisa LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Anaerobic digestion, Biogas, Energy crops, Macronutrients, Micronutrients
- in
- Biomass & Bioenergy
- volume
- 47
- pages
- 62 - 70
- publisher
- Elsevier
- external identifiers
-
- wos:000314075900008
- scopus:84870704466
- ISSN
- 1873-2909
- DOI
- 10.1016/j.biombioe.2012.10.002
- language
- English
- LU publication?
- yes
- id
- b922146a-bda1-42bd-b6cf-45ee66012b6a (old id 3568099)
- date added to LUP
- 2016-04-01 10:38:54
- date last changed
- 2022-02-17 20:04:56
@article{b922146a-bda1-42bd-b6cf-45ee66012b6a, abstract = {{The feasibility of digesting energy crops supplemented with macro- and micronutrients instead of manure, without the commonly applied long hydraulic retention time (HRT), was investigated in long-term, single-stage continuous stirred tank processes. The crops used were mixtures of sugar beets, maize and whole crop triticale. The organic loading rate (OLR) measured as a total solid (TS) was 1.5-5.5 kg m(-3) d(-1) and the HRT from 30 to 40 days. The results showed high methane yields, comparable to those in batch digestion, and high stability. The digestion of beets only was most stable, and showed the highest average TS-based methane yield (383 +/- 26 m(3) kg(-1)) at an OLR of 4.5 kg m(-3) d(-1) and a HRT of 40 days. No significant difference in methane yield was found for all the crop mixtures during stable operation. Nutrient addition therefore showed the same stimulatory and stabilising effects as manure with high methane yields achieved at relatively short HRTs. (c) 2012 Elsevier Ltd. All rights reserved.}}, author = {{Ivo Achu, Nges and Björnsson, Lovisa}}, issn = {{1873-2909}}, keywords = {{Anaerobic digestion; Biogas; Energy crops; Macronutrients; Micronutrients}}, language = {{eng}}, pages = {{62--70}}, publisher = {{Elsevier}}, series = {{Biomass & Bioenergy}}, title = {{High methane yields and stable operation during anaerobic digestion of nutrient-supplemented energy crop mixtures}}, url = {{http://dx.doi.org/10.1016/j.biombioe.2012.10.002}}, doi = {{10.1016/j.biombioe.2012.10.002}}, volume = {{47}}, year = {{2012}}, }