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Journals / Türk Tarım ve Doğa Bilimleri Dergisi / 2026 / Volume: 12 Issue: 2

Impact of Elevated Ammonia Concentration on Scenedesmus dimorphus Growth in a Flat-Plate Photobioreactor

Yüksek Amonyak Konsantrasyonunun Düz Panel Fotobiyoreaktörde Scenedesmus dimorphus Gelişimi Üzerindeki Etkisi

Seyit Uğuz(Yozgat Bozok University)0000-0002-3994-8099
Pages
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Publication Date
2025-04-16
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results indicated that while normalized cell concentrations were highest in control tanks (1.79±0.09, p<0.01), the dry biomass was significantly greater in tanks subjected to the 50 ppm NH₃ loading rate (1.34±0.02, p<0.01).

📌 3 Key Takeaways

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Objective & Hypothesis:Animal feeding operations (AFOs) are significant sources of airborne pollutants, particularly ammonia (NH₃), which pose considerable environmental and health risks.
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Key Findings & Data:Ammonium chloride (NH₄Cl) was employed to simulate NH₃ concentrations typical of animal housing, specifically at a loading rate of 50 ppm (78 mg L⁻¹ d⁻¹ NH₄Cl).
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Conclusion & Impact:Results indicated that while normalized cell concentrations were highest in control tanks (1.79±0.09, p<0.01), the dry biomass was significantly greater in tanks subjected to the 50 ppm NH₃ loading rate (1.34±0.02, p<0.01).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Microalgae · mitigation · animal barns

Abstract

Animal feeding operations (AFOs) are significant sources of airborne pollutants, particularly ammonia (NH₃), which pose considerable environmental and health risks. In response to these challenges, photobioreactor (PBR) systems utilizing microalgae have emerged as a promising solution. These systems can effectively absorb and metabolize pollutants such as NH₃ and carbon dioxide (CO₂), thereby improving air quality while simultaneously producing valuable biomass. The present study specifically investigated the effects of elevated NH₃ concentrations on algal growth within PBRs. Ammonium chloride (NH₄Cl) was employed to simulate NH₃ concentrations typical of animal housing, specifically at a loading rate of 50 ppm (78 mg L⁻¹ d⁻¹ NH₄Cl). Over a 21-day experimental period, control tanks containing standard Bold's Basal Medium (BBM) were compared against those with NH₃ exposure. Results indicated that while normalized cell concentrations were highest in control tanks (1.79±0.09, p<0.01), the dry biomass was significantly greater in tanks subjected to the 50 ppm NH₃ loading rate (1.34±0.02, p<0.01). These findings suggest that microalgae possess a remarkable capacity to adapt to high NH₃ levels, highlighting their potential role in emission mitigation and sustainable biofuel production. The integration of PBR systems utilizing microalgae represents a viable strategy for addressing the environmental and health challenges posed by AFOs. By effectively utilizing pollutants such as NH₃, these systems not only enhance air quality but also contribute to the development of sustainable biofuels, thus supporting broader environmental sustainability goals.

Özet

Yoğun hayvancılık faaliyetleri, amonyak (NH₃) da dahil olmak üzere havayla taşınan önemli kirleticiler üreterek çevre ve sağlık riskleri oluşturmaktadır. Fotobiyoreaktör (PBR) sistemleri, NH₃ ve CO₂ gibi kirleticileri absorbe etmek ve metabolize etmek, hava kalitesini artırmak ve değerli biyokütle üretmek için mikroalgleri kullanan umut verici bir çözüm olarak ortaya çıkmıştır. Bu çalışma, hayvan barınaklarında tipik olarak görülen yüksek amonyak konsantrasyonlarını azaltmak için yüksek NH₃ konsantrasyonlarının PBR'lerde alg büyümesi üzerindeki etkisini araştırmaktadır. Amonyum klorür (NH4Cl), NH₃ yerine kullanılmış ve nitrat içermeyen BBM ortamı hayvan barınaklarında tipik olarak görülen 50 ppm (78 mg L-¹ d-¹ NH4Cl) NH₃ konsantrasyonunu simüle etmiştir. Her deney 21 gün boyunca normal BBM (0,25 g L-¹ NaNO3) içeren kontrol tanklarında gerçekleştirilmiştir. Normalize edilmiş hücre konsantrasyonları NH3 içermeyen PBR tanklarında en yüksek (1.79±0.09, p<0.01), ancak kuru biyokütle 50 ppm NH3 yükleme oranına sahip tanklarda daha yüksekti (1.34±0.02, p<0.01). Hücre konsantrasyonları 50 ppm NH3 ile azalırken, kuru biyokütle NH3 içermeyen tanklara kıyasla artmıştır. Sonuçlar, mikroalglerin emisyonları azaltma, yetiştirme stratejilerini optimize etme ve sürdürülebilir biyoyakıt üretimini destekleme potansiyelini ortaya koymakta ve PBR'lerin çevresel etkileri azaltma ve atık kaynakları geri dönüştürmedeki rolünü vurgulamaktadır.

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Cite This Article

Uğuz, S. (2025). Impact of Elevated Ammonia Concentration on Scenedesmus dimorphus Growth in a Flat-Plate Photobioreactor. Türk Tarım ve Doğa Bilimleri Dergisi, Volume: 12 Issue: 2. https://doi.org/10.30910/turkjans.1559035

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