Yazar "Solmaz, Alper" seçeneğine göre listele
Listeleniyor 1 - 5 / 5
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Effect of sludge retention time on biomass production and nutrient removal at an algal membrane photobioreactor(Sprınger, 2019) Solmaz, Alper; Işık, MustafaIn this study, the effect of sludge retention time (SRT) on biomass production and nutrient removal was determined by constant hydraulic retention time (HRT) with mixed microalgae culture. The SRTs of 2, 3, 6, 12, and 24 days with constant 24h HRT were studied in microalgae membrane photobioreactor (msMpBR) by using hollow fiber (HF) membranes with a pore diameter of 0.45m. According to the results, the best removal was achieved within 3days of SRT. Chlorophyll-a/mixed liquor suspended solid (MLSS) ratios were found to be 0.033. Total nitrogen (TN) and phosphate phosphorus (PO4-P) removal rates were found to be 5.55mgN/Lday(-1), and 0.4mg PO4-P/Lday(-1), respectively. The volumetric microalgae production was found to be 0.118g/Lday(-1). Also, Chaetophora sp. and Navicula sp. cultures were found to be dominant in steady state. The percentage of lipid and protein in dry biomass was obtained to be 8.94% and 30.34%, respectively. It is advisable to use algal membrane photobioreactor, and mixed microalgae cultures instead of specific microalgae cultures, which could be readily affected by seasonal changes and outdoor conditions in wastewater treatment.Öğe Microalgae production with microalgal submerged membrane photo bioreactor (msmpbr) and examining the nutrient removal yield(Yildiz Technical University, 2017) Solmaz, Alper; Işık, MustafaOne of the most important and advanced treatment methods applied to decrease the damages of treated waters to receiving bodies to minimum level is the one applied by using microalgae. With the use of microalgae, the waste waters are treated at further levels and biomass is obtained to use for beneficial purposes. In this study, the nitrogen and phosphorus removal was investigated with the formation of micro-algae that was 3 days mature in terms of sludge retention time in 24-hour hydraulic retention time at 5.5 L Microalgae Submerged Membrane Photo Bioreactor (msMpBR) fed by synthetic wastewater. The solid-liquid separation from the system was made with 0.45 mu m hollow fiber membrane. The concentration was started with 156 mg/L suspended solid (SS) in the reactor, and when the stable conditions were achieved, 354 (+/- 18) mg/L was added, and the Chlorophyll-a concentration was increased from 2.44 mg/L to 11.54 (+/- 0.30) mg/L. Maximum removal yields in this study were as follows; COD; > 24%; Total nitrogen (TN); 30.30%; NH4-N; 50.08%; PO4-P; 4.54%. This study has shown that there are low TN and PO4-P removal with this system in present conditions. In order to increase nitrogen and phosphorus removal, the conditions of the operations are being changed and optimization works are continuing.Öğe Mikroalgal batık membran fotobiyoreaktör ile biyokütle üretimi ve nütriyent giderimi(Aksaray Üniversitesi Fen Bilimleri Enstitüsü, 2018) Solmaz, Alper; Işık, MustafaBu çalışmada mikroalgal batık fotobiyoreaktörde (mbMfBR) karışık mikroalg kültürü ve 0,45 µm hollow fiber (HF) membran ile atıksudan nütriyent giderimi ve biyokütle üretimi incelenmiştir. Sentetik atıksuda 24 saat hidrolik bekletme süresi (HBS) sabit tutularak 3, 6, 12 ve 24 günlük çamur yaşlarında (ÇY) çalışılıp optimum ÇY belirlenmiş ve ayrıca bu ÇY'de 48, 60 ve 72 saatlik HBS'ler çalışılarak optimum HBS belirlenmiştir. Belirlenen optimum şartlarda gerçek atıksu ile çalışılmalar yapılmıştır. Tüm çalışmalarda hacimsel mikroalg üretim verimleri ve nütriyent giderim hızları belirlenmiştir. Ayrıca üretilen biyokütlenin yağ ve protein içeriği saptanmış ve her bir çalışmanın belirli zamanlarındaki baskın kültürlerin tayinleri yapılmıştır. Buna göre sentetik atıksuda optimum değerler ÇY 3 gün ve HBS ise 24 saat olarak tespit edilmiştir. Bu çalışmada kararlı şartlarda askıda katı madde (AKM) ve klorofil-a derişimleri sırasıyla 354 mg/L ve 11,54 mg/L olarak ölçülmüştür ve hacimsel mikroalg üretim hızı ise 0,118 gr/L-gün olarak hesaplanmıştır. Giderim hızları ise toplam azotta (TN) 5,55 mg/L-gün, fosfat fosforunda (PO4-P) 0,40 mg/L-gün olarak bulunmuştur. Ayrıca kararlı şartlarda %45-50 civarında Chaetophora sp., %45-50 civarında Navicula sp. gözlemlenmiş ve kuru biyokütledeki yağ oranı %8,90, protein oranı ise %30 olarak ölçülmüştür. Gerçek bir arıtılmış evsel atıksuda ise nütriyent giderim hızları TN ve PO4-P'de sırasıyla 1,37 mg/L-gün ve 0,40 mg/L-gün olarak bulunmuştur. Hacimsel mikroalg üretim hızı ise 0,037 gr/L-gün olarak bulunmuş ve biyokütlede %14,33 oranında yağ ve %32,2 oranında protein ölçülmüştür. Bu sonuçlara göre, bu çalışmada membranlar sayesinde reaktördeki biyokütlenin kaçışı engellenerek yüksek derişimlere ulaşılabilmiştir. Ayrıca karışık mikroalg kültürü ile elde edilen biyokütle verimlerinin ve nütriyent giderim hızlarının tek tip kültüre nazaran kabul edilebilir nitelikte olduğu ortaya konulmuştur. Diğer taraftan elde edilen kuru biyokütlede yapılan protein ve yağ analizi ile ham besin ya da alternatif biyoyakıt ürünleri için (biyodizel, etanol, biyoelektrik, hidrojen, metan vs.) karışık mikroalg kültürünün potansiyeli gelecekteki araştırmacılar için bilgi kaynağı olacaktır.Öğe Optimization of membrane photobioreactor; the effect of hydraulic retention time on biomass production and nutrient removal by mixed microalgae culture(Elsevier Ltd, 2020) Solmaz, Alper; Işık, MustafaIn this study, the effect of hydraulic retention time (HRT) on the performance of microalgae membrane photobioreactor (MpBR) inoculate by mixed culture were with examined on biomass productivity and nutrient removal from synthetic secondary effluent. The optimization of HRT was aimed for the treatment of wastewater in MpBR operating at HRTs between 24 h and 72 h with at a fixed sludge retention times (SRT) of 3 d. The volumetric microalgae production rates were obtained to be from 0.118 g L?1day?1 to 0.064 g L?1day?1, respectively at increasing HRT from 24 h to 72 h at the stable conditions. The total nitrogen (TN) removal rate was calculated to be 5.55 mgL?1day?1 and the phosphate phosphorus (PO4–P) removal rate to 0.40 mgL?1day?1 where the highest biomass production rate was obtained at the HRT of 24 h. Although this work showed the potential use of mixed microalgae culture and membrane in both wastewater treatment and microalgae biomass production, it is looked that the treatment of the secondary effluent has not been able to meet the discharge standards according to EU and general directives unless optimization is made. But bioenergy power, namely lipid and protein ratios of dry biomass under the optimum conditions were also determined and lipid content was 8.94% and the protein content was 34%. Today, when there is a global food shortage, the oil and protein ratio in microalgae biomass obtained by treating wastewater is potentially competitive with traditional agricultural products.Öğe Polishing the secondary effluent and biomass production by microalgae submerged membrane photo bioreactor(Elsevier, 2019) Solmaz, Alper; Işık, MustafaMicroalgae are used in wastewater treatment successfully by the uptake of nutrients in secondary effluents that can be used as a valuable biomass. In this study, mixed microalgae culture was used for real wastewater treatment plant (WWTP) for polishing the effluent instead of the specific culture, because the specific culture is contaminated under real environmental conditions. Nutrient removal rates, protein and lipid content of the biomass were determined. Volumetric microalgae productivity was found as 0.037 g/L. day with 3 days of sludge retention times (SRT) and 24 h of hydraulic retention time (HRT) in a 5.5 L microalgae submerged membrane photo bioreactor (msMpBR). Total nitrogen (TN) and phosphate phosphorus (PO4-P) removal rates were found to be 5.55 and 0.40 mg/L. day, respectively, while Navicula sp. and Chaetophora sp. cultures were found to be dominant in steady state. The lipid content was 14.33% and raw protein content was 32.69% in dry biomass. The results showed that N and P can be effectively removed from the real wastewaters by mixed microalgae culture and msMpBR and also algal biomass could be produced with good lipid and protein content.
