FORSU and agricultural biomethane plants

In most European countries, there has always been a clear and strong separation in biogas / biomethane plants between those fueled by agricultural biomass and those fueled by waste, although, from the chemical point of view, the composition of the digestate in the fermenter has little difference between the two.  Agricultural biogas is produced, as well as a share of cultivated biomass (being phased out, in homage to the guidelines of the ILUC directive, concerning raw materials to be used for biofuels, and is concerned about the potential competition of energy crops against food crops), especially from agricultural by-products and waste .  

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The selection of the inoculum for the biogas plant – III Part

Easy Methane Lab

For each by-product its digestate!

Re-publication of an article by Mario A. Rosé on Agronotizie

In Part I of this article we have explained how an anaerobic digestion system works by comparing it with a “breeding of bacteria”. For the proper functioning of a biogas plant, its manager must know how to choose the inoculum according to the by-products with which the digester will be fed, just as a breeder chooses the breed to breed according to the business purpose, for example dairy or beef cattle. On the sidelines of the verification of methanogenic activity (SMA) – explained in Part II of this article – it is important to verify the ability of the inoculum to degrade complex organic matrices, such as cellulose, proteins and fats.

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How to select the inoculum for the biogas plant – Part II

BRS bioprocess control

The specific methanogenic activity (High school): realization and interpretation of the test results.

Re-publication of an article by Mario A. Rosé on Agronotizie

In Part I di questo articolo abbiamo illustrato come si misura l’attività biologica di un inoculo introducendo una certa quantità di substrato di riferimento in un reattore di prova e verificando che per ogni grammo di COD (Chemical oxygen demand) vengano prodotti almeno 350 Ncm3 di metano.

Analizziamo in questa Part II dell’articolo le peculiarità della prova di Attività Metanogenica Specifica (High school).

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How to select the inoculum for the biogas plant – Part I

AMPTS LIGHT

The specific methanogenic activity (High school): a very useful test but still to be normalized. Re-publication of an article by Mario A. Rosé on Agronotizie

Spesso dico che quando puoimisurare ciò di cui stai parlando, and express it in numbers, allorasai qualcosa di esso; ma se non riesci amisurarlo, if you can't express it in numbers, la tua conoscenza è magra ed insoddisfacente; essa può essere l’inizio della conoscenza, ma non ti avrà consentito, nella tua mente, di avanzare nel progresso dellascienza, qualunque sia la disciplina.
  William Thomson, I Barone di Kelvin (Lezione suUnità di misura elettriche”, 3 maggio 1883)

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The biological self-management of the biogas plant

eudiometro

Re-publication of an article by Mario A. Rosé on Agronotizie

Gestire in modo ottimale un impianto a biogas vuol dire diventare “allevatore di batteri”.
Al pari degli animali d’allevamento, i batteri rendono il massimo se vengono mantenuti in condizioni per loro ottimali, per cui risulta fondamentale monitorare i diversi aspetti che incidono sul funzionamento dell’intero sistema anaerobico. È noto a tutti che i diversi costruttori e alcuni laboratori indipendenti, offrono il servizio di assistenza biologica.
Tipicamente tutti questi servizi hanno un punto debole: i risultati non vengono forniti in tempo reale. Moreover, le analisi fornite, in genere riguardano solo la dinamica del processo di degradazione anaerobica, ma non la verifica della qualità della biomassainsilati o sottoprodotti che sianocon la quale viene alimentato l’impianto.

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Biomass hydrogen and Green Deal: It is possible to circumvent the Laws of Thermodynamics with an EC directive?

Re-publication of an article by Mario A. Rosé on Agronotizie.

L’European Green Deal (Italian text in This Page), strongly supported by the Von der Leyen administration, is the manifesto that the European political class proposes as a recipe for:

“... build a Europe in which there will be no local pollution, nor loss of biodiversity, nor global impact on the climate, nor energy poverty, businesses will be competitive, the just and prosperous society, and no one will be left behind”.

Read with a critical spirit, purely technical and devoid of ideological bias, the document looks more like a utopian wish list than a guideline, because there is a lack of concrete actions to achieve the set objectives. The content includes several claims that are not supported by any evidence, For example:
“The rapid decrease in the cost of renewable energy, combined with a better definition of support policies, has already reduced the impact of renewable energy on household energy bills” (sic).

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