Kurnani Tubagus Benito Achmad


THE EFFECT OF C/N RATIOS OF A MIXTURE OF BEEF CATTLE FECES AND WATER HYACINTH (Eichornia crassipes) ON THE QUALITY OF BIOGAS AND SLUDGE

Kurnani Tubagus Benito Achmad, Yuli Astuti Hidayati, Dimas Fitriani, Oki Imanudin

Abstract
The objective of this study was to know the effect of C/N ratios of fermentation substrate composed of beef cattle feces and water hyacinth (Eichornia crassipes) mix on the quality of produced biogas and sludge. Experiment was performed based on completely randomized design with three treatments of C/N ratio: i.e., 20, 25, 30, and replicated six times. The result showed that C/N ratios significantly increase the CH4 content. Highest CH4 content was provided by C/N ratio of 30. Ratios of C/N has no significant effect on CO2 content, and results in very low H2 content. The result also indicated that C/N ratios significantly decrease N, P, and K contents of the sludge. Although, C/N ratio of 20 provides the highest concentration of N, P, and K contents, all produced sludge may be used as single source of fertilizer.

Key words: beef cattle feces, water hyacinth, biogas, sludge


EFECTUL RAPORTULUI C/N DIN AMESTECUL GUNOI DE GRAJD DE VITĂ ŞI SOLUŢIE DE HIACINT (Eichornia crassipes) ASUPRA CALITĂŢII BIOGAZULUI ŞI A NĂMOLULUI

Kurnani Tubagus Benito Achmad, Yuli Astuti Hidayati, Dimas Fitriani, Oki Imanudin

Rezumat
Obiectivul acestui studiu a fost cunoasterea efectelor generate de diferite proportii C/N asupra substratului fermentativ de dejectii de bovine si solutie apoasa de hiacint (Eichornia crassipes) asupra calitatii biogazului produs si a tulburelii rezultate. Experimentul a avut la baza un design complet randomizat, cu 3 tratamente diferite ale proportiei C/N:, 20, 25, 30, repetate de 6 ori. Rezultatele au indicat ca proportiile de C/N au crescut semnificativ continutul de CH4 īn biogaz. Cel mai crescut nivel de CH4 a rezultat īn urma utilizarii proportiei C/N = 30. Raportul C/N nu a avut efecte semnificative asupra continutului de CO2 content, rezultānd, de asemenea, cantitati reduse de H2. S-a mai observat ca proportia C/N a scazut semnificativ continutul de N, P si K din tulbureala. Cu toate acestea, raportul C/N=20 a determinat obtinerea celor mai mari concentratii de N, P si K, ceea ce indica faptul ca tulbureala poate fi utilizata ca fertilizant unic īn agricultura.

Cuvinte cheie: dejectii de taurine, solutie apoasa de hiacint, biogaz, tulbureala