Mikroalgin Ön Arıtılmış Düzenli Depolama Sızıntı Suyunda Çoğaltılması

Year 2018, Volume: 30 Issue: 1, 115 - 123, 01.03.2018

Umut Metin Mahmut Altınbaş

Abstract

Bu
çalışmanın amacı, ön arıtılmış katı atık Düzenli Depolama Sızıntı Suyu (DDSS)’nun
Synechocystis sp. PCC 6803 türünün
üretimi için uygunluğunu belirlemek ve PCC 6803’ün DDSS’den azot giderme
verimliliğini ortaya koymaktır. PCC 6803, kesikli reaktörlerde değişik DDSS
derişimlerinde (%20, %40, %60 ve %80) çoğaltılmış olup, atıksudan azot giderme
verimleri ölçülmüştür. %20 oranında DDSS içeren reaktörde ortalama 318 mg AKM/L
ve 1,816 optik yoğunluk bulunmuş olup bu değer ölçülen en yüksek biyokütle
değerine karşılık gelmektedir. Artan DDSS derişimi ile beraber azot giderim
verimliliği düşmüştür. %20, %40, %60 ve %80 oranında DDSS içeren ortamlardan
amonyum azotu giderim verimi sırasıyla %28, %19, %14 ve %7’dir. %20, %40, %60
ve %80 oranında DDSS içeren ortamlardan TKN giderimi verimi sırasıyla %51, %44,
%40 ve %20’dir. DDSS’deki ortofosfat miktarı oldukça düşük olup çoğalmadaki
önemli kısıtlardan biri olacağı düşünülerek fosfat eklemeli çalışmalar da
yapılmıştır.  Ortamdaki fosfat miktarı
ideal besiyeri (BG-11)’ndeki fosfat miktarının 0,5, 1, 2 ve 4 katı olacak şekilde
%20 DDSS içeren reaktörlerde çoğaltılmışlardır. Bu reaktörlerden elde edilen
sonuçlar fosfor ilavesi olmayan reaktörlere benzerdir. Sonuçlar, PCC 6803’ün
DSS üzerindeki büyümesini kısıtlayan etmenin DDSS içeriğindeki eksik diğer
mineral maddelerden kaynaklanabileceğini göstermektedir.

Keywords

Mikroalg, Synechocystis sp. PCC 6803, Düzenli Depolama Sızıntı Suyu, Azot ve Fosfor Geri Kazanımı

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