Abstract
The increasing requirement of food neutral biofuels demands the detection of alternative sources. The use of non-arable land and waste water streams is widely discussed in this regard. A Cyanobacterium was isolated on the area of a possible algae production side near a water treatment plant in the arid desert region al-Wusta. It was identified as Cyanobacterium aponinum PB1 and is a possible lipid source. To determine its suitability of a production process using this organism, a set of laboratory experiments were performed. Its growth behavior was examined in regard to high temperatures and increasing NaCl concentrations. A productivity of 0.1 g L−1 per day was measured at an alga density below 0.75 g L−1. C. aponinum PB1 showed no sign of altered growth behavior in media containing 70 g L−1 NaCl or less. Detection of a negative effect of NaCl on the growth using Pulse-Amplitude-Modulation chlorophyll fluorescence analysis was not more sensitive than optical density measurement.
Highlights
Microalgae and cyanobacteria were considered to be a good choice as lipid source for bio diesel production, forD
Cyanobacterium aponinum PB1 was grown in media with increasing NaCl concentrations, namely 10, 13, 20, 26, 35, 58, 70, 92, and 140 g L-1, and stable NaCL concentration (10 g L-1, referred to as control culture)
Afterwards, the growth was linear with an increase of 1.3 9 106 cells per ml per day for the treated and 0.9 9 106 cells per ml per day for the control culture till day 16, after which the NaCl concentration was increased to 92 g L-1
Summary
Microalgae and cyanobacteria were considered to be a good choice as lipid source for bio diesel production, forD. Microalgae and cyanobacteria were considered to be a good choice as lipid source for bio diesel production, for. Recent studies consider microalgae and cyanobacteria to be not able to be used as a stand-alone commercial production process, but to be a means to utilize waste streams of other processes or to be a solution for a smallscale niche products (Van Beilen 2010; Chisti 2013). During the crude oil production in the Sultanate of Oman 800,000 m3 of contaminated production water accumulates per day (Breuer and Al-Asmi 2010). Different options for further use of the treated water are under investigation. One possible option is to establish an algae growth facility for which the possible location would be in the arid desert region al-Wusta, Oman
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