Effect of the culture media optimization, pH and temperature on the biohydrogen production and the hydrogenase activities by Klebsiella pneumoniae ECU-15

Evaluation of nicotine sensor based on copper nanoparticles and carbon nanotubes

“…In contrast, electrochemical methods are simple, inexpensive, and reliable approaches for the detection of nicotine [6][7][8][9]. However, they have some limitations, such as slow oxidation/reduction and low sensitivity [10][11][12]. There are two ways to improve the sensitivity of the sensing electrode, namely changing the base electrode material [8,13,14] or using the surface modifiers [15,16].…”

Nitrogen-removal efficiency of a novel aerobic denitrifying bacterium, Pseudomonas stutzeri strain ZF31, isolated from a drinking-water reservoir

“…To overcome this problem, a full or fractional factorial design coupled with response surface methodology (RSM) should be used (Su et al, 2015;Ghosh and Hallenbeck, 2010). RSM is a powerful statistical tool for designing experiments, building and analyzing models, evaluating the joint effects of several factors, and determining the optimal conditions for desired responses (Virkutyte et al, 2010;Xiao et al, 2013). This technique has been applied to analyses of a variety of biological systems, especially those involving bioprocesses (Virkutyte et al, 2010) such as denitrification, which was considered in the present study.…”

Comparative evaluation of the hydrogen production by mixed consortium, synthetic co-culture and pure culture using distillery effluent

“…2b). Operational pH plays a critical role in determining the hydrogen yield as they influence the fermentation end product formation and the activity of key enzyme hydrogenase (Xiao et al, 2013). The operational temperature was varied from 31°C to 39°C at an interval of 2°C using optimum glucose concentration (10 g/L) and initial pH (6.5).…”