Combined Treatment of Vinasse by an Upflow Anaerobic Filter-Reactor and Ozonation Process

Abstract

-The aim of the present study was to evaluate the efficacy of treating vinasse using anaerobic digestion (AD) followed by ozonation. The AD process was performed using a laboratory-scale upflow anaerobic filter reactor (UAFR) under continuous operation at 29 ± 1 °C. Stable conditions were reached at 10 kgCOD m -3 d -1 and a hydraulic retention time (HRT) of 5 days. Under these conditions, the efficiency of reduction of the chemical oxygen demand (COD) and the methane yield were 75.1% and 0.315 m 3 CH 4 kgCODr -1 , respectively. The anaerobically digested effluent was further treated using ozone in a bubbling column. An experimental 2 3 array [C(0 3 ) g = 70; 100 mgO 3 L -1 ; pH= 7.5; 10; tc = 1 and 3 h] was used. The best conditions for effluent ozonation were 100 mgO 3 L -1 , pH 7.5 and 3 hours of contact with ozone. The average efficiencies for COD, color and turbidity reduction were 82.4, 93.8 and 99.3%, respectively.

Ozonation improves physical attributes in domestic sewage effluent

“…In percentage, the reduction was 47.0% at 30 min and 76.2% at 120 min Regarding the treatment with different dosages of ozone, there was a reduction of 67.7% at the dosage of 4 mg L -1 of O3 and of 81.5% at the dosage of 17 mg L -1 of O3 ( Figure 5). The greatest color reductions (76.2% and 81.5%), are corroborated by Cabrera-Díaz et al (2016) and Li et al (2015), in which Cabrera-Díaz et al (2016) observed color removals of 93.7% (UPt-Co) in a combined treatment of vinasse (anaerobic filter-reactor and ozonation process) emphasizing the effectiveness of the ozonation process in the color and turbidity removal of this residue. Li et al (2015), on the other hand, using biofiltration and ozonation for effluent treatment, observed a general efficiency for color removal of 70.0%, similar to the one obtained in the present study.…”

E-Beam Irradiation and Ozonation as an Alternative to the Sulphuric Method of Wine Preservation

“…Color changes under the influence of ozone exposure were also observed. During the first hour of ozonation, ozone reduced vinasse color by 87% [41]. The changes were less pronounced in non-ozonized wine.…”

Kajian Potensi Vinase Sebagai Bahan Fertigasi di Perkebunan Tebu (Saccharum Officinarum L.)

“…Vinase pada umumnya merupakan produk sampingan yang dibuang ke tanah (Moran-Salazar et al 2016) atau ke badan air (Cabrera-Díaz et al 2016). Aplikasi vinase ke tanah merupakan praktik yang umum diterapkan di areal perkebunan tebu (Cavalett et al 2012;Ortegón et al 2016;Ortiz and Erazzú 2019;Pita et al 2009).…”

“…Proses humifikasi dan mineralisasi pada vinase yang diaplikasikan ke tanah dapat berkontribusi positif terhadap perubahan sifat kimia dan fisik tanah, sehingga mendukung pertumbuhan tanaman. Kesuburan tanah akan meningkat karena adanya peningkatan bahan organik dan nutrien dari vinase ke dalam tanah (Cabrera-Díaz et al 2016). Selain meningkatkan ketersediaan nutrien tanah, vinase juga dapat meningkatkan kadar air tanah (Seddik, Osman, dan Kenawy 2016) karena vinase memiliki kadar air yang tinggi.…”