Abstract
Biohydrogen production by Thermotoga maritima from a simplified medium exclusively composed of onion and natural seawater
Highlights
In the coming years, the increase in world population and in average per capita income would inexorably lead to the growth of fossil fuel demand
None other volatile fatty acids or sugars were detected (Table 1). These values were close to those found in the literature with a difference related to the solubility of sugars essentially present in the juice part [8,28] and the decrease of sucrose after Onion Waste Juice (OWJ) preparation attributed to sucrose hydrolysis to glucose and fructose due to the acidic pH of 4.0–4.8
To determine if the only ammonium source provided by OWJ was limiting for H2 production by Thermotoga maritima (TM), 0.5 g/L of NH4Cl (NH+4 = 9 mM) was added to 17% of OWJ mixed with SW
Summary
The increase in world population and in average per capita income would inexorably lead to the growth of fossil fuel demand. This heavy dependence on fossil fuels results in a series of environmental problems, e.g., global warming and air pollution, and generates sustainability problems in the face of a continuously increasing demand. With a high percentages of organic waste (nearly 70% of organic waste released in landfills) and only 12% of total energy production expected to come from biomass sources, Tunisia should consider focusing more research on renewable energy recovery from biomass. Biomass allows waste management and energetic conversion of fermentable waste [3]
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