No abstract

The objective of this research was to use a prototype of fixed-bed columns packed with crushed seeds of Moringa oleifera to detect the best adsorption of chemical elements present in the desalinator reject. The column was adapted to the prototype container containing 200 liters of reject.The extract was collected every five minutes until 60 minutes, resulting in 12 samples where pH, EC, Na, K, Ca, Mg and Cl were determined. Statistical analysis was performed by analysis of variance (ANOVA), using the F test, with a 95% confidence interval. It was found through laboratory tests that Moringa seeds were effective in the adsorption of sodium, calcium, magnesium and chloride with five minutes of contact of desalination reject with Moringa oleifera crushed seeds with husks.

Reaproveitamento de resíduos alimentares na produção de tanase por Cunninghamella echinulata UCP 1305 através de fermentação submersa Reuse of food waste in the production of tannase by Cunninghamella echinulata UCP 1305 through submerged fermentation

This study aims to analyze the reject produced by the desalinators implanted in the semi-arid Pernambuco in contact with the seeds of Moringa oleifera Lam. For this, Moringa seeds were collected and prepared with the following treatments: reject (control), reject with whole seed with and without husks, reject with crushed seed with and without husks, seed residue with and without husks, in five replicas. Each replica was constituted with doses equivalent to 2.0 g of Moringa seeds for 200 mL of reject, with contact time corresponding to 30, 60, 120 and 180 minutes, in a completely randomized design, under laboratory conditions, total of 140 experimental units. The physical-chemical and statistical analyses were performed through analysis of variance (ANOVA), and the F test, at confidence interval of 95%. It has been found through laboratory tests that seeds with crushed or ground Moringa husks are equally effective at adsorbing sodium from 1,868,0 mg/L to 24,6 mg/L (98,7 %), calcium from 1,005.0 mg/L to 894.6 mg/L (11%), magnesium from 741.0 mg/L to 728.3 mg/L (1.7%) and chloride from 6,997.5 mg/L to 6,782.4 mg/L (1.8%). Therefore, Moringa seed can be considered promising in the adsorption of chemical elements of saline water desalinizers.