Comparative Evaluation of Bio-Hydrogen Production From Cheese Whey Wastewater Under Thermophilic and Mesophilic Anaerobic Conditions

Azbar, Nuri; Dokgöz, F. Tuba Çetinkaya; Keskin, Tuğba; Eltem, Rengin; Korkmaz, Kemal; Gezgin, Yüksel; Akbal, Z.; Öncel, Suphi Ş.; Dalay, Meltem Conk; Gönen, Çağdaş; Tutuk, F.

doi:10.1080/15435070902785027

Cited by 76 publications

(46 citation statements)

References 16 publications

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“…It had a pH of 4.7, chemical oxygen demand (COD) of 86.3 g/L, total sugars (as lactose) of 42.6 g/L, suspended solids of 6.9 g/L, and a total nitrogen of 0.2 g/L [7]. Corn steep liqour was obtained from Cargill (Bursa, Turkey) and its pH was 4.5.…”

Section: Characterization Of Cheese Whey and Corn Steep Liquor (Csl)mentioning

confidence: 99%

“…Corn steep liqour (CSL) has also been used as an inexpensive source of essential microbial nutrients for a variety of purposes [9,10]. Even though there exist a number of technological developments and bioproducts in the transformation of CW or CSL to other useful products [7,10], utilization of these by-products to cultivate heterotrophic microalgae offers a new application area.…”

Section: Introductionmentioning

confidence: 99%

“…Annual world cheese-whey (CW) production is continuously increasing and new bioproducts are being sought through biotechnology in order to get full use of the produced cheese whey [7,8]. Corn steep liqour (CSL) has also been used as an inexpensive source of essential microbial nutrients for a variety of purposes [9,10].…”

Section: Introductionmentioning

confidence: 99%

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Peyniraltı Suyu ve Mısır Islatma Şurubunun Heterotrofik Mikroalg Crypthecodinium cohnii ile Biyokütle ve Yağ Üretimi Amacıyla Biyolojik Olarak Değerlendirilmesi

İşleten-Hoşoğlu¹,

Elibol²

2017

Akademik Gıda

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Many different wastewater and by-products derived from industrial activities potentially support microalgal growth by providing a cost-effective and sustainable solutions. In this present study, it was aimed to biologically utilize cheese whey (CW) and corn steep liquor (CSL) for microalgal biomass and lipid production by using these wastes in culture media for heterotrophic microalga Crypthecodinium cohnii cultivation. To determine nutrient requirements for C. cohnii growing in a medium prepared with CSL and in CW, statistical screening tools were used. CSL significantly enhanced microalgal growth and it could be an alternative to yeast extract as the primary nutrient source. As for CW, it served as a good culture medium for C. cohnii with the supplement of some of nutrients and eliminated the need for fresh water. Thus, a new culture medium was developed by combining undiluted CW and CSL and optimized for the growth of C. cohnii. Lastly, in a scale-up attempt by using this new medium, microalgal production was performed in a 3 L stirred tank bioreactor. C. cohnii yielded relatively high biomass productivity (2.28 g/L.d) and lipid content (28.7% dry weight) in the optimized medium. Although C. cohnii was known for its ability to accumulate high amounts of docosahexaenoic acid (DHA), it transformed its fatty acid composition to an increased proportion of saturated and monounsaturated fatty acids (C16:0-C18:1) that comprise ~70% of total fatty acids (TFA) when it was cultivated in CW mainly supplemented with CSL. Thus, C. cohnii seemed to be more feasible for biodiesel production than any other purposes when it was cultivated in this new medium. Gıda 15(3) (2017) 233-241 Keywords 234üretimler gerçekleştirilmiştir. Optimizasyonu yapılan kültür ortamında kısmen yüksek biyokütle verimliliği (2.28 g/L.gün) ve yağ oranı (% 28.7 kuru ağırlık) sağlanmıştır. C. cohnii biyokütlede son derece yüksek oranlarda dokozahekzanoik asit (DHA) üreticisi bir tür olarak bilinmesine rağmen, CSL ile zenginleştirilmiş CW ortamında biyokütlesindeki yağ asidi kompozisyonunu değiştirerek, daha çok tekli doymuş ve tekli doymamış yağ asitlerince (C16:0-C18:1) zengin bir yağ profiline (toplam yağ asidi kompozisyonunun ~70%'i) sahip olduğu saptanmıştır. Buna göre, endüstriyel atıkların değerlendirildiği bu kültür ortamında yetiştirilen C. cohnii'nin biyodizel üretimi için uygun bir kaynak olabileceği sonucuna varılmıştır.

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Section: Characterization Of Cheese Whey and Corn Steep Liquor (Csl)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Peyniraltı Suyu ve Mısır Islatma Şurubunun Heterotrofik Mikroalg Crypthecodinium cohnii ile Biyokütle ve Yağ Üretimi Amacıyla Biyolojik Olarak Değerlendirilmesi

İşleten-Hoşoğlu¹,

Elibol²

2017

Akademik Gıda

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“…Hydrogen production from household solid waste by using extremethermophilic (70°C) mixed culture resulted in 2 mol H 2 mol hexose -1 (Liu et al, 2008a) and 0.82 mol H 2 mol hexose -1 (Liu et al, 2008b). Other studies on various mixed substrates include pig slurry (Kotsopoulous et al, 2009), rice winery wastewater (Yu et al, 2002), palm oil effluent (POME) (Ismail et al, 2010;O'Thong et al, 2008;Prasertsan et al, 2009), and cheese whey (Azbar et al, 2009a(Azbar et al, , 2009b, and are presented in Table 6. Fewer studies have been done using pure microbial cultures producing H 2 from complex biomass.…”

Section: Wwwintechopencommentioning

confidence: 99%

Ethanol and Hydrogen Production with Thermophilic Bactera from Sugars and Complex Biomass

Sveinsdóttir¹,

Sigurbjörnsdóttir²,

Örlygsson³

2011

Progress in Biomass and Bioenergy Production

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“…Anaerobic treatment is possible at all three temperature ranges (psychrophilic, mesophilic, and thermophilic); however, low temperature generally leads to a decline in the maximum specific growth rate and methanogenic activity [39,70,71]. Methanogenic activity at this temperature range is 10 to 20 times lower than the activity at 35 ∘ C, which requires an increase in the biomass in the reactor (10 to 20 times) or operating at higher sludge retention time (SRT) and hydraulic retention time (HRT) in order to achieve the same COD removal efficiency as that obtained at 35 ∘ C [3,67].…”

Section: Effect Of Temperaturementioning

confidence: 99%

Review of Upflow Anaerobic Sludge Blanket Reactor Technology: Effect of Different Parameters and Developments for Domestic Wastewater Treatment

Daud

Rizvi

Akram

et al. 2018

Journal of Chemistry

102

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The upflow anaerobic sludge blanket (UASB) reactor has been recognized as an important wastewater treatment technology among anaerobic treatment methods. The objective of this study was to perform literature review on the treatment of domestic sewage using the UASB reactor as the core component and identifying future areas of research. The merits of anaerobic and aerobic bioreactors are highlighted and other sewage treatment technologies are compared with UASB on the basis of performance, resource recovery potential, and cost. The comparison supports UASB as a suitable option on the basis of performance, green energy generation, minimal space requirement, and low capital, operation, and maintenance costs. The main process parameters such as temperature, hydraulic retention time (HRT), organic loading rate (OLR), pH, granulation, and mixing and their effects on the performance of UASB reactor and hydrogen production are presented for achieving optimal results. Feasible posttreatment steps are also identified for effective discharge and/or reuse of treated water.

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Comparative Evaluation of Bio-Hydrogen Production From Cheese Whey Wastewater Under Thermophilic and Mesophilic Anaerobic Conditions

Cited by 76 publications

References 16 publications

Peyniraltı Suyu ve Mısır Islatma Şurubunun Heterotrofik Mikroalg Crypthecodinium cohnii ile Biyokütle ve Yağ Üretimi Amacıyla Biyolojik Olarak Değerlendirilmesi

Peyniraltı Suyu ve Mısır Islatma Şurubunun Heterotrofik Mikroalg Crypthecodinium cohnii ile Biyokütle ve Yağ Üretimi Amacıyla Biyolojik Olarak Değerlendirilmesi

Ethanol and Hydrogen Production with Thermophilic Bactera from Sugars and Complex Biomass

Review of Upflow Anaerobic Sludge Blanket Reactor Technology: Effect of Different Parameters and Developments for Domestic Wastewater Treatment

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