Efficiency of L-DOPA+TiO2 modified RO membrane on salinity gradient energy generation by pressure retarded osmosis

Nuray Ateş; Murat Gökçek; Niğmet Uzal

Makale detayları

Efficiency of L-DOPA+TiO2 modified RO membrane on salinity gradient energy generation by pressure retarded osmosis

Yazarlar:

Nuray Ateş | Murat Gökçek | Niğmet Uzal

Yayıncı:

Pamukkale University

Ana Başlıklar:

Çevre Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 3, pp.395-404

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001320581

pISSN:

2147-5881

Anahtar kelimeler:

Özet:

 Harvesting energy from the salinity gradient of seawater and river water using pressure retarded osmosis PRO has been a major research topic of recent years. However, there is a need for efficient PRO membranes that can generate high power density and are pressure resistant, as the performance of current membranes on the market is poor. In this study, specific energy potential of PRO process using L-DOPATiO2 modified BW30-LE membrane was evaluated on synthetic and real water samples. Polyamide BW30-LE RO membrane was modified by L-DOPA, L-DOPA0.5 wt TiO2 and L-DOPA1 wt TiO2. The effect of hydraulic pressure and temperature on generation of power density were evaluated for 5, 10, and 15 bar pressures, as well as 10 C, 20 C, and 30 C degrees. The incorporation of TiO2 nanoparticles with L-DOPA increased the water flux by increasing the surface hydrophilicity and roughness of the membrane surface. The maximum specific power was observed as 1.6 Wm2 for L-DOPA1 wt TiO2 modified BW30-LE membrane at 15 bar pressure. Besides, Mediterranean and Aegean, Black Sea water samples were used as draw solution and Seyhan, Ceyhan, Buyuk Menderes, Gediz, Yesilirmak, and Kizilirmak Rivers were used as feed solution. The highest osmotic power density was obtained by using L-DOPA1 wt TiO2 modified BW30-LE membrane with Ceyhan River as feed and Mediterranean Sea water as draw solution, which have the highest differences in salinity. In the mixture of Mediterranean and Ceyhan River, the highest power density was obtained at 10 bar pressure at 30  5C with 0.70 Wm2.

 Harvesting energy from the salinity gradient of seawater and river water using pressure retarded osmosis PRO has been a major research topic of recent years. However, there is a need for efficient PRO membranes that can generate high power density and are pressure resistant, as the performance of current membranes on the market is poor. In this study, specific energy potential of PRO process using L-DOPATiO2 modified BW30-LE membrane was evaluated on synthetic and real water samples. Polyamide BW30-LE RO membrane was modified by L-DOPA, L-DOPA0.5 wt TiO2 and L-DOPA1 wt TiO2. The effect of hydraulic pressure and temperature on generation of power density were evaluated for 5, 10, and 15 bar pressures, as well as 10 C, 20 C, and 30 C degrees. The incorporation of TiO2 nanoparticles with L-DOPA increased the water flux by increasing the surface hydrophilicity and roughness of the membrane surface. The maximum specific power was observed as 1.6 Wm2 for L-DOPA1 wt TiO2 modified BW30-LE membrane at 15 bar pressure. Besides, Mediterranean and Aegean, Black Sea water samples were used as draw solution and Seyhan, Ceyhan, Buyuk Menderes, Gediz, Yesilirmak, and Kizilirmak Rivers were used as feed solution. The highest osmotic power density was obtained by using L-DOPA1 wt TiO2 modified BW30-LE membrane with Ceyhan River as feed and Mediterranean Sea water as draw solution, which have the highest differences in salinity. In the mixture of Mediterranean and Ceyhan River, the highest power density was obtained at 10 bar pressure at 30  5C with 0.70 Wm2.

 Harvesting energy from the salinity gradient of seawater and river water using pressure retarded osmosis PRO has been a major research topic of recent years. However, there is a need for efficient PRO membranes that can generate high power density and are pressure resistant, as the performance of current membranes on the market is poor. In this study, specific energy potential of PRO process using L-DOPATiO2 modified BW30-LE membrane was evaluated on synthetic and real water samples. Polyamide BW30-LE RO membrane was modified by L-DOPA, L-DOPA0.5 wt TiO2 and L-DOPA1 wt TiO2. The effect of hydraulic pressure and temperature on generation of power density were evaluated for 5, 10, and 15 bar pressures, as well as 10 C, 20 C, and 30 C degrees. The incorporation of TiO2 nanoparticles with L-DOPA increased the water flux by increasing the surface hydrophilicity and roughness of the membrane surface. The maximum specific power was observed as 1.6 Wm2 for L-DOPA1 wt TiO2 modified BW30-LE membrane at 15 bar pressure. Besides, Mediterranean and Aegean, Black Sea water samples were used as draw solution and Seyhan, Ceyhan, Buyuk Menderes, Gediz, Yesilirmak, and Kizilirmak Rivers were used as feed solution. The highest osmotic power density was obtained by using L-DOPA1 wt TiO2 modified BW30-LE membrane with Ceyhan River as feed and Mediterranean Sea water as draw solution, which have the highest differences in salinity. In the mixture of Mediterranean and Ceyhan River, the highest power density was obtained at 10 bar pressure at 30  5C with 0.70 Wm2.

 Basınç geciktirmeli osmoz PRO kullanarak deniz suyu ve nehir suyunun tuzluluk gradyanından enerji elde etmek son yıllarda önemli bir araştırma konusu olmuştur. Ancak, piyasadaki mevcut membranların performansı düşük olduğundan, yüksek güç yoğunluğu üretebilecek ve basınca dayanıklı etkili PRO membranlarına ihtiyaç duyulmaktadır. Bu çalışmada, sentetik ve gerçek su numuneleri kullanılarak L-DOPATiO2 modifiye BW30-LE membranlar ile PRO prosesinin özgül enerji potansiyeli değerlendirilmiştir. Polyamid BW30-LE RO membranı, L-DOPA, L-DOPA 0.5 ağ. Ti02 ve L-DOPA 1 ağ. Ti02 ile modifiye edilmiştir. Hidrolik basınç ve sıcaklığın güç yoğunluğu üzerindeki etkisi 5, 10 ve 15 bar basınçları ile 10 C, 20 C ve 30 C dereceleri için değerlendirilmiştir. TiO2 nanoparçacıklarının L-DOPA ile birleştirilmesi, yüzey hidrofilikliğini ve membran yüzeyinin pürüzlülüğünü artırarak su akışını arttırmıştır. L-DOPA 1 ağ. TiO2 ile modifiye edilmiş BW30-LE membran için 15 bar basınçta maksimum özgül güç 1,6 Wm2 olarak gözlendi. Ayrıca, çekme çözeltisi olarak Akdeniz ve Ege, Karadeniz su örnekleri, besleme çözeltisi olarak Seyhan, Ceyhan, Büyük Menderes, Gediz, Yeşilırmak ve Kızılırmak nehirleri kullanılmıştır. En yüksek ozmotik güç yoğunluğu, L-DOPA 1 ağ. TiO2 modifiye BW30-LE membranı ile tuzluluk farklılıkları en yüksek olan besleme çözeltisi olan Ceyhan Nehri ve çekme çözeltisi olan Akdeniz suyu kullanılarak elde edilmiştir. Akdeniz ve Ceyhan Nehri karışımında en yüksek güç yoğunluğu 10 bar basınçta 30  5 Cde 0,70 Wm2 ile elde edilmiştir.

Makale detayları

Efficiency of L-DOPA+TiO2 modified RO membrane on salinity gradient energy generation by pressure retarded osmosis

Yazarlar:

Nuray Ateş | Murat Gökçek | Niğmet Uzal

Yayıncı:

Pamukkale University

Ana Başlıklar:

Çevre Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 3, pp.395-404

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001320581

pISSN:

2147-5881

L-DOPA

Polyamide membrane

Pressure retarded osmosis

Salinity gradient power

Surface modificationL-DOPA

Poliamid membran

Basınç geciktirmeli osmoz

Tuzluluk gradyan enerjisi

Yüzey modifikasyonu

Sayı

Makale detayları

Yazarlar: Nuray Ateş | Murat Gökçek | Niğmet Uzal

Yayıncı: Pamukkale University

Ana Başlıklar: Çevre Mühendisliği (Diğer)

Dergi: Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 3, pp.395-404

Belge Tipi: Makale

Yayın Tarihi: 6/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001320581

pISSN: 2147-5881

Sayı

Yazarlar:

Nuray Ateş | Murat Gökçek | Niğmet Uzal

Yayıncı:

Pamukkale University

Ana Başlıklar:

Çevre Mühendisliği (Diğer)

Dergi:

Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi Vol.30 Issue 3, pp.395-404

Belge Tipi:

Makale

Yayın Tarihi:

6/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001320581

pISSN:

2147-5881