UDTR Global Rights of Nature Radar

Design and Construction of Magnetic Stirrers for Biogas Evaluation Project in the Galapagos Islands

Identification

Public canonical key

radar:r-cd6d955ed7d4fec3a6e4de7a355aa4c6

Authors

Gabriel Bobadilla-Carreño · Roberto Escutia Fernández · Marco Antonio Barceló Rendón · Oscar Emilio Báez Anaya · Gabriel Gonzalo Ahumada Miranda · Edgar Alberto Vélez-Pineda · Cecilia Puertas · José Luis Zavala Aguirre · Marcos Alfredo Hernández Ortega

Reported year

2026

Reported language

en

Source type

article

First detected

2026-11-14T02:15:55.054985+00:00

Last metadata observation

2026-11-14T02:15:55.054985+00:00

Last HTTP verification

Not checked

Institutions reported by the source

Universidad Autónoma de Guadalajara · Universidad Internacional del Ecuador

Reported affiliation countries

EC · MX

Documentary abstract — original language

The Galápagos Islands is an archipelago of Ecuador that is very famous for its great biodiversity and endemism and has been designated a UNESCO World Heritage Site since 1978. However, over many years, various species of exotic plants have been introduced that affect the local ecosystem, endangering native fauna and flora. As an alternative for their removal, a project has been proposed to evaluate the use of exotic plants to produce biogas and compost, which would provide an additional economic benefit. Within the proposed project, there is an important design requirement: to prevent the precipitation of components in the digesters by means of magnetic stirrers. In this article, the design and construction of low-cost, easy-maintenance, and highly practical magnetic stirrers is proposed, which can be used for several months, providing high reliability in their operation. The methodology for the selection of their components, their construction, and a comparison with a commercial alternative is presented. The proposed magnetic stirrer model has the aforementioned characteristics, reaching the 25% volume and about 20-25% of mass of a commercial magnetic stirrer, as well as an increase of 200% in the magnetic reachability and with at most the 66% of the cost. The magnetic stirrers built were used continuously for approximately 14 weeks in the laboratory of the Biosecurity Agency of the Galápagos Islands (ABG) on Santa Cruz Island, thus demonstrating their usefulness and reliability. An analysis of their performance, based on the logbook of the biogas production project, is provided as evidence of this. This proposal represents a practical, simple, and low-cost alternative that can facilitate the implementation of experiments for the evaluation of biogas production in diverse settings.

Identifiers

OPENALEX

https://openalex.org/W7165032388

DOI

10.61865/j.cyfdct.2025.n3aq-xcft

Documentary context

Documentary family

article

Source-reported types

article

Publishers

Universidad Autónoma de Guadalajara

Entity mentions are not evidence of legal recognition. Jurisdiction studied is separate from author affiliation country.

Sources

OpenAlex · Record 1

• Document · https://doi.org/10.61865/j.cyfdct.2025.n3aq-xcft

Documentary status

Relevance pending

Library

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