Enhancing the energetic potential of sugarcane biorefinery exchanging vinasse and glycerol in sugarcane off-season in an anaerobic reactor

Takeda, Paula Yumi; Oliveira, Chiara Albano de Araújo; Dias, Maria Eduarda Simões; Paula, Carolina Tavares; Borges, André do Vale; Damianovic, Márcia Helena Rissato Zamariolli

doi:10.1016/j.renene.2022.06.128

Cited by 9 publications

(1 citation statement)

References 51 publications

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“…Vinasse contains a lot of harmful substances, such as phenols, polyphenols, and heavy metals, as well as signi cant levels of organic content and dissolved solids. Its characteristics of being acidic (pH of 4.30-4.55), dark brown, and having a high chemical oxygen demand (COD) concentration (28.5-85.0 gCOD/L) are necessary to be a concern since the phytotoxic and recalcitrant compounds in the sugarcane vinasse could negatively affect the organisms at disposal sites (Chai et al 2021; Kiani Deh Kiani et al 2021; Takeda et al 2022). Disposing of untreated/partially treated vinasse on land or groundwater could cause a profound environmental impact.…”

Section: Introductionmentioning

confidence: 99%

Chemical and biological combined treatment for sugarcane vinasse: selection of parameters and performance studies

Kee

Wong

Ong

et al. 2023

Environ Sci Pollut Res

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Sugarcane vinasse has been widely reported due to the improper management that pollutes the environment. In this study, a combined coagulation and sequencing batch bio lm reactor (SBBR) seems to be a novel improvement for the treatment of sugarcane vinasse. This research focused on the optimal conditions of coagulation and SBBR and determined the abatement e ciency of sugarcane vinasse in combined sequential wastewater treatment. The coagulation process destabilizes the colloids in the aggregation and separates the supernatant by sedimentation and ltration, resulting in the maximum COD reduction (79.0 ± 3.4%) and decolorization e ciency (94.1 ± 1.9%) under the optimum conditions. Sequencing batch reactor (SBR) is a ll-and-draw activated sludge system, whereas SBBR is an integrated SBR that suspends activated sludge and connects growth processes into a biocarrier-lled system. SBBR showed great synergistic degradability, decreasing 86.6 ± 4.3% COD concentration and 94.6 ± 3.8% decolorization at 3.0 g/L of substrate loading concentration. Furthermore, kinetic studies of SBBR revealed that the rst-order kinetic model was the best tting model. The SBBR reaction was further investigated by ultraviolet-visible spectrophotometry (UV-Vis). Then, SBBR followed by the coagulation process (SBBR-CP) achieved 97.5% of COD reduction and 99.4% of decolorization, which was better than the coagulation process followed by SBBR (CP-SBBR). This nding provides new insight into developing e cient combined sequential wastewater treatments in sugarcane vinasse.

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Section: Introductionmentioning

confidence: 99%