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Title: Anaerobic co-digestion of aquatic flora and quinoa with manures from Bolivian Altiplano

Abstract

Quinoa stalk (Chenopodium quinoa Willd.) from agricultural crop residue, totora (Schoenoplectus tatora) and o-macrophytes (aquatic flora) from Lake Titicaca (on the Bolivian Altiplano) were studied in a wet anaerobic co-digestion process together with manure from llama, cow and sheep. Anaerobic semi-continuous experiments were performed in (10) 2-l reactors at a temperature of 25 deg. C with 30 days of hydraulic retention time (HRT) and an organic loading rate (OLR) of 1.8 kg VS m{sup -3} d{sup -1}. Totora was found to be the best co-substrate. In mixture ratios of 1:1 (VS basis), it increased the biogas productivity by 130% for llama manure, 60% for cow manure, and 40% for sheep manure. It was possible to use up to 58% (VS basis) of totora in the substrate. Higher concentrations (including pure totora) could not be digested, as that caused acidification problems similar to those caused by other lignocellulosic materials. When quinoa and o-macrophytes were used as co-substrates, the increase in biogas productivity was slightly less. However, these co-substrates did not cause any operational problems. An additional advantage of quinoa and o-macrophytes was that they could be used in any proportion (even in pure form) without causing any destabilization problems in themore » anaerobic digestion process.« less

Authors:
 [1];  [2]
  1. IIDEPROQ, UMSA, Plaza del Obelisco 1175, La Paz (Bolivia)
  2. Department of Chemical Engineering, Lund University, P.O. Box 124, 221 00 Lund (Sweden)
Publication Date:
OSTI Identifier:
21153938
Resource Type:
Journal Article
Journal Name:
Waste Management
Additional Journal Information:
Journal Volume: 28; Journal Issue: 10; Other Information: DOI: 10.1016/j.wasman.2007.11.002; PII: S0956-053X(07)00390-X; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0956-053X
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ACIDIFICATION; ANAEROBIC DIGESTION; CROPS; DEUTERIUM IONS; L REACTOR; LLAMAS; LOADING RATE; MANURES; METHANE; PRODUCTIVITY; RESIDUES; SHEEP; SUBSTRATES

Citation Formats

Alvarez, Rene, and Liden, Gunnar. Anaerobic co-digestion of aquatic flora and quinoa with manures from Bolivian Altiplano. United States: N. p., 2008. Web. doi:10.1016/j.wasman.2007.11.002.
Alvarez, Rene, & Liden, Gunnar. Anaerobic co-digestion of aquatic flora and quinoa with manures from Bolivian Altiplano. United States. https://doi.org/10.1016/j.wasman.2007.11.002
Alvarez, Rene, and Liden, Gunnar. Tue . "Anaerobic co-digestion of aquatic flora and quinoa with manures from Bolivian Altiplano". United States. https://doi.org/10.1016/j.wasman.2007.11.002.
@article{osti_21153938,
title = {Anaerobic co-digestion of aquatic flora and quinoa with manures from Bolivian Altiplano},
author = {Alvarez, Rene and Liden, Gunnar},
abstractNote = {Quinoa stalk (Chenopodium quinoa Willd.) from agricultural crop residue, totora (Schoenoplectus tatora) and o-macrophytes (aquatic flora) from Lake Titicaca (on the Bolivian Altiplano) were studied in a wet anaerobic co-digestion process together with manure from llama, cow and sheep. Anaerobic semi-continuous experiments were performed in (10) 2-l reactors at a temperature of 25 deg. C with 30 days of hydraulic retention time (HRT) and an organic loading rate (OLR) of 1.8 kg VS m{sup -3} d{sup -1}. Totora was found to be the best co-substrate. In mixture ratios of 1:1 (VS basis), it increased the biogas productivity by 130% for llama manure, 60% for cow manure, and 40% for sheep manure. It was possible to use up to 58% (VS basis) of totora in the substrate. Higher concentrations (including pure totora) could not be digested, as that caused acidification problems similar to those caused by other lignocellulosic materials. When quinoa and o-macrophytes were used as co-substrates, the increase in biogas productivity was slightly less. However, these co-substrates did not cause any operational problems. An additional advantage of quinoa and o-macrophytes was that they could be used in any proportion (even in pure form) without causing any destabilization problems in the anaerobic digestion process.},
doi = {10.1016/j.wasman.2007.11.002},
url = {https://www.osti.gov/biblio/21153938}, journal = {Waste Management},
issn = {0956-053X},
number = 10,
volume = 28,
place = {United States},
year = {2008},
month = {7}
}