Hydrodynamic effect of dispersed phase fraction on the mass transfer and uptake rate of hexadecane by an oil-degrading microbial consortium in an airlift bioreactor

Biodegradation capabilities of acclimated activated sludge towards glyphosate: Experimental study and kinetic modeling

“…As in the case of oxygen transfer, increasing glyphosate concentration in the bulk to a value exceeding glyphosate uptake rate of growing cell could result in the increase of glyphosate transfer rate [36]. Here this glyphosate transfer rate is considered by the glyphosate yield on oxygen ratio (Y S/O ).…”

Oil Produced Water Treatment Using Sugarcane Solid Residue as Biosorbent

“…k int values were of 0.56, 0.72, 0.90, 1.82 and 1.88 mg g −1 min −0.5 , respectively according to the increase of oil concentration. Estimating mass transfer or transfer coefficient can be important to understand if is possible to remove the oil present in the effluent, because this is one of the main phenomenon responsable to adsorb oil in biomass (Tec-Caamal et al, 2018;Lizardi-Jiménez et al, 2011;Lizardi-Jiménez et al, 2012).…”

Bioreactors for remediation of hydrocarbons in rivers and lagoons of San Luis Potosí

“…The evaluation of aliphatic hydrocarbons was carried out by gas chromatography (Trace 1310-TRIPLUS, Thermo Scientific USA) using the next operative conditions. Table 1 shows the operating parameters for chromatographic analysis (Tec-Caamal et al, 2018). The aliphatic hydrocarbon reference (ASTM D2887-12, RESTEK) was used.…”

“…The consortium was isolated from the rhizosphere of Cyperus laxus, a hydrocarbon pollution tolerant plant native to the swamps of southern Mexico. The culture grew in mineral medium, consisting of (g L −1 ): 6.75 NaNO 3 , 2.15 K 2 HPO 4 , 1.13 KCl and 1.10 MgSO 4 •5H 2 O. pH was adjusted to 6.5 (Tec-Caamal et al, 2018), 13000 mg L −1 of diesel was used as a carbon source.…”

“…The Sauter mean diameter (d 32 ) for water and diesel was calculated using a method of digital imagen analysis (Tec-Caamal et al, 2018;Yang et al, 2018). There were ten photos taken for each condition to a height of 12 cm from the top of the downcomer with a digital camera, and they were analysed using software (ImageJ v1.8.0, USA).…”