Recently, fishery farming business has been rapidly developed due to an increasing demand of consumptions and wild fish resources depletion. This process usually generated large amount of wastewater containing high nutrients posing a threat to downstream waters. However, phytoplankton removal techniques that commonly used appear to have low efficiency, time consuming and less sustainable. Microalgae are photosynthetic microorganisms that convert solar energy into hydrogen. Using the harvested algae from fish farms as the source of renewable energy production could be a promising choice for completely handling this fishery wastewater. However, the hydrogen production processes from algae still need more studies as its efficiency varying between algae species and growth factors. In this work, the efficiency of hydrogen production from Scenedesmus sp. and Arthrospira sp. harvested from fish farms under three different light intensity conditions and three atmospheric gas conditions was determined. The results showed that the best condition for hydrogen production from both species was done under 24 hrs dark condition with carbon dioxide addition. Under the atmospheric gas combination of 99% Argon and 1% carbon dioxide, Scenedesmus sp. could produce hydrogen gas as high as 0.572 μmolH2 within 12 hrs., while highest hydrogen production (0.348 μmolH2) obtained from Arthrospira sp. was found under the atmospheric gas mixture of 98% argon and 2% carbon dioxide. Interestingly, Scenedesmus sp. appeared to produce more hydrogen than Arthrospira sp. under the same condition.

ข้าพเจ้าได้เข้าร่วมการนำเสนอผลงานวิจัยเรื่อง Effect of light intensities and atmospheric gas conditions on biohydrogen production of microalgae harvested from fisheries wastewater ในงานงานประชุม The 2nd Environment and Natural Resources International Conference ในวันที่ 16-17 พฤศจิกายน 2559 ที่จัดโดย Faculty of Environement and resource studies, Mahidol university ซึ่งงานวิจัยนี้ได้ศึกษาการนำสาหร่ายจากบ่อเลี้ยงปลา 2 สายพันธุ์ มาผลิตพลังงานไฮโดรเจน โดยศึกษาผลของความเข้มแสงและองค์ประกอบของก๊าซบรรยากาศ นอกจากนี้ในยังได้รับรางวัลการนำเสนอ The outstanding poster presentation