We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
TRATAMIENTO DE LODOS RESIDUALES DE UNA INDUSTRIA CERVECERA A TRAVÉS DE FERMENTACIÓN HOMOLÁCTICA PARA LA PRODUCCIÓN ACELERADA DE ABONO ORGÁNICO.
- Authors
Cupe Flores, Beatriz Esther; Juscamaita Morales, Juan Gabriel
- Abstract
The residual sludge from a Waste Water Treatment Plant (WWTP) of the brewing industry are produced in large volumes, causing pollution problems. However, this can constitute a favorable substrate to make organic fertilizers in order to improve the quality of eroded soils. The present research aims to develop an Accelerated Liquid Fertilizer (ALF) taking advantage of the afore mentioned residual sludges through the homolactic fermentation process and using other inputs, such as a microbial consortium (B-lac) and cane molasses. Twenty-four different combinations of experimental units (T1-T24) and one control (T0) were treated for 5 days at 40 ° C, under a Full Random Design with 5x5 Factorial Arrangement. Also, the Tukey group test (p <0.05) was used to determine significant differences between treatments and the least squares for the means. The best treatment was T9 with 20% molasses and 5% B-lac, presenting the lowest pH (3.13) and the highest percentage of lactic acid (3.71%), maintaining its stability for 30 days. The microbiological evaluation of T9 resulted in it being free of total coliforms, fecal coliforms and parasite eggs. In addition, according to the agronomic analysis, ALF presented 12.94% of organic matter, 1825.6 ppm, 600 ppm and 5800 ppm of N, P and K respectively. The heavy metals Pb, Cd and Cr were within the permissible limits according to international regulations. In the lettuce (Lactuca sativa) seed toxicity bioassay, it was determined that a 0.1% dose of ALF was not detrimental to germination and normal growth of the seedlings; verified by a germination rate greater than 80%. In conclusion, the organic fertilizer of residual sludge from a brewing industry showed good agronomic quality.
- Publication
Ecologia Aplicada, 2018, Vol 17, Issue 1, p107
- ISSN
1726-2216
- Publication type
Article
- DOI
10.21704/rea.v17i1.1179