Termik Santral Kömür Emisyonlarına Dirençli Leptolyngbya sp. Biyokütle Optimizasyonu ve Kömür Emisyonlarından CO2 Fiksasyonu

Yıl 2016, Cilt: 19 Sayı: 4, 362 - 372, 05.11.2016

Burcu Ertit Taştan

Öz

Çalışmada termik santral kömür emisyonlarına dirençli Leptolyngbya sp. siyanobakterisinin bu emisyonların çeşitli konsantrasyonlarında biyokütle üretiminde ve CO₂ fiksasyon oranında artış sağlayabilmek için farklı parametrelerin optimizasyonu sağlanmıştır. Leptolyngbya sp.’nin artan kömür emisyonlarına direnç sağlaması için biyokütle 3-Indoleacetic acid (IAA) ve Viburnum opulus (VO) büyüme uyarıcıları ile uyarılmıştır. En yüksek biyokütle konsantrasyonu kontrol kültürden 1.3 kat daha fazla olarak 3.788 g L^-1 ile BG11 + %5 Termik Santral Soğutma Suyu + 0.5 g L^-1 IAA + 2.5 g L^-1 VO besi yeri bileşiminde, pH 8’de, 35 ± 2 °C sıcaklıkta, 0.1 g L^-1  başlangıç biyokütle konsantrasyonunda, 25 µmol m^-2 s^-1 (24:0, aydınlık:karanlık fotoperiyodu) ışık şiddetinde ve 14 günlük inkübasyon periyodunda elde edilmiştir. En yüksek maksimum biyokütle üretimi (Pmax) 0.263 g L^-1 gün^-1,  spesifik büyüme oranı 0.26 gün^-1, CO₂ fiksasyon miktarı 48.2 mg CO₂ gün^-1 olarak bulunmuştur. Çalışmada Leptolyngbya sp.’nin artan kömür emisyonlarında IAA ve VO büyüme faktörlerinin yardımıyla yüksek biyokütle üretebildiği ve kontrol kültüre göre çok daha fazla CO₂’yi fiske edebildiği belirlenmiştir.

Anahtar kelimeler: 3-Indoleacetic acid, büyüme uyarıcıları, CO₂ fiksasyonu, Leptolyngbya sp., Viburnum opulus

 

Biomass Optimisation of Thermal Power Plant Coal Emissions Resistant Leptolyngbya sp. and CO₂ Fixation in Coal Emissions

 

ABSTRACT: In this study, different parameters were optimized in order to increase the CO₂ fixation rate and biomass production of Leptolyngbya sp., which is a new flue gas resistant cyanobacteria. Leptolyngbya sp. was stimulated with 3-Indoleacetic acid (IAA) and Viburnum opulus (VO) growth stimulators to provide resistant against increasing flue gas concentrations. The maximum biomass was obtained 1.3 times higher than of control culture with 3.788 g L^{-1 in BG11 + 5% Thermal Power Plant Cooling Water + 0.5 g L-1} IAA + 2.5 g L^-1 VO culture media, at pH 8, at 35 ± 2 °C, at 0.1 g L^-1 initial biomass concentrations, with 25 µmol m^-2 s^-1 (24:0, light:dark photoperiod) in 14 days of incubation period. The maximum productivity (Pmax) was 0.263 g L^-1 d^-1, the maximum specific growth rate was 0.26 d^-1 and the maximum CO₂ fixation rate was 48.2 mgCO₂ d^-1. It was determined that compared to control culture, Leptolyngbya sp., could provide more biomass and capable of fixing more CO₂ rates with the help of IAA and VO growth stimulators at increasing flue gas emissions.

Keywords: 3-Indoleacetic acid, growth stimulators, CO₂ fixation, Leptolyngbya sp., Viburnum opulus

Kaynakça

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