Orsolya STRANG, Zoltán BAGI, Kornél L. KOVÁCS (Ungaria)
Rezumat
Producerea de biogaz este una din tehnologiile sustenabile cu beneficiul considerabil de a fi capabila
sa genereze purtatori de energie utili din diferite material brute ce au ca origine biomasa si care includ plante si
reziduuri din plante. Tesuturile plantelor sunt formate din celuloza ca element principal. Celuloza reprezinta un
carbohidrat polimeric pentru descompunerea caruia sunt necesare celulazele. Pentru utilizarea de substraturi cu
un continut ridicat de celuloza comunitatea microbiana ce produce biogazul ar trebui sa contina un numar
semnificativ de bacterii care sa produca celulazele iar acestea ar trebui sa rupa celuloza in monomeri de zaharuri
usor de utilizat. A fost dezvoltata o strategie adaptativa de aclimatizare a comunitatii la substratul lignocelulozic.
Experimentele au fost realizate in conditii termofile la 55°C. ?-celuloza a fost utilizata ca substrat pentru
adaptare, iar fermentatoarele de control au fost alimentate cu gucoza pentru carbon si sursa de energie. Din
comunitatea microbiana adaptata, au fost izolate elementele de degradare a celulozei si au fost de asemenea
utilizata ca inocul in urmatorul set de experimente de producere a biogazului. Microbii cu rol de degradare a
celulozei au avut un effect pozitiv prin cresterea producerii de biogaz si continut de metan.
Cuvinte cheie: biogaztermofildegradarea celulozei
Abstract
Biogas production is one of the sustainable technologies with the considerable benefit of being able
to generate useful energy carrier from various raw materials of biomass origin including plants and plant
residues. Plant tissues consist of cellulose as the major component. Cellulose is a complex polymeric
carbohydrate, cellulases are needed for its efficient decomposition. For the utilization of substrates having high
cellulose content the biogas producing microbial community should contain a significant number of bacteria,
which produce cellulases and they should break down cellulose to easily utilizable sugar monomers. An
adaptation strategy to acclimatize the community to lignocellulosic substrate has been developed. The experiments were carried out under thermophilic conditions at 55°C. ?-cellulose was used as substrate for the adaptation and the control fermentors received glucose as carbon and energy source. From the adapted microbial community cellulose degraders were isolated and were also used as inoculum in the next set of biogas experiments. The cellulose degrading microbes had positive effect, elevated the biogas and methane yield
Keywords: BiogasThermophilicCellulose degradation
Din același număr
- CHARACTERIZATION OF A BIOGASPRODUCING MICROBIAL COMMUNITY BY SHORT-READ NEXT GENERATION DNA SEQUENCING
- THE IMPACT OF BACTERIAL PRETREATMENT ON CORN STOVER FOR BIOGAS PRODUCTION
- ADVANCED TECHNOLOGIES IN THE TREATMENT OF CHRONIC VENOUS INSUFFICIENCY - LONGTERM RESULTS
- HIGROTHERMIC TRANSFER THROUGH THE PASSIVE HOUSE AND ZERO ENERGY HOUSE ENVELOPE
- EFICIENTA ORIENTARII SI CONSILIERII SCOLARE PENTRU CARIERA A ELEVIILOR DE CLASA A VIII-A
- STUDIUL FACTORILOR CE INFLUENTEAZA REZULTATELE ELEVILOR LA EXAMENELE DE EVALUARE NATIONALA PRIN METODA CORELATIEI DE RANG
- INFLUENCE OF ENVIROMENT ON THE EVOLUTION AND RECURRENCE OF CHRONIC VENOUS INSUFFICIENCY
- ANALIZA LINGVISTICA A FRAGMENTARIUM-ULUI EMINESCIAN
- VALORIFICAREA ENERGETICA A NAMOLULUI IN STATIILE DE EPURARE MUNICIPALE DIN ROMANIA
- STUDIUL FACTORILOR CARE INFLUENTEAZA CONSUMUL DE BERE PRIN METODA CORELATIEI DE RANG
- THE INFLUENCE OF ENVIRONMENTAL IODINE DEFICIENCY ON THE BREAST
- DESIGN OF AN INDUSTRIAL PROTOTYPE MACHINE USED FOR ROD CUTTING OPERATIONS IN SRC NURSERIES