Síntesis y Extracción de Sustancias Húmicas a Partir de Residuos Orgánicos
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Ante el aumento de los residuos s�lidos a nivel nacional y mundial, y en gran proporci�n el de los residuos alimentarios; el problema se agudiza por los diferentes factores incidentes poco manejables y reducidas alternativas o tecnolog�as sostenibles. En ese sentido la investigaci�n tuvo como objetivo la s�ntesis y extracci�n de sustancias h�micas de residuos org�nicos previamente compostados agregando tierra de monta�a conteniendo microorganismos activados seguido de la humificaci�n. Los resultados de los tratamientos T1, T2, T3 y T4 fueron: rendimiento: 41.35 .25; 42.70 0.35; 40.25 0.55; 35.66 0.65; humedad (%) 55.5 0.85; 49.5 0.66; 53.3 0.45; 54.2 0.55, pH: 6.84 0.1; 6.94 0.1; 7.26 0.1 5.58 0.1; temperatura ( C): 25.16 2; 23.5 2, 23.16 2;23.00 2; conductividad el�ctrica (dS/m) 27.37 0.3, 18.20 0.3, 15.32 0.3, 12.56. 0.3; capacidad de intercambio cati�nico (CIC)( meq/100g): 9.60 0.5, 23.20 0.5, 27.3 0.5, 26.3 0.5; carbono org�nico total (COT) (%): 32.8 0,3; 33.9 0.3 31.7 0,3; 31.1 0,3; nitr�geno total (%): 0.36 0,1; 1.05 0,1; 1.46 0,1; 1.03 0,1; f�sforo total (%): 1.16 0,1; 1.10 0,1; 1.20 0,1; 1.03 0,1. La relaci�n C/N fue: 12.53 0.7; 8.65 0,8; 11.98 0,8; 13.13 0,8; los �cidos h�micos se cuantific� por espectrofotometr�a ultravioleta (UV-vis) (380nm a 460nm): (%) 3.44 0.5; 3.30 0.5; 3.56 0.5; 2.54 0.5, los �cidos f�lvicos: (%) 1.31 0.3; 1.46 0.3; 1.28 0.3; 0.83 0.3. Mediante la espectrometr�a FTIR, encontr� grupos qu�micos en T1, T2 y T3. La eficacia se midi� con el �ndice de germinaci�n en la semilla del ma�z, en 5 tratamientos TC1, TC2, TC3, TC4, TSC5 con 3 repeticiones en un dise�o DCA existiendo diferencias significativas entre las medias de los tratamientos TC4 y TSC5 al aplicar la prueba de Tukey.
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