An assessment of electrolytic hydrogen production from H 2 S in Black Sea waters

Petrov, Κ.; Baykara, S.Z.; Ebrasu, D.; Гулин, М. Б.; Veziroğlu, Ayfer

doi:10.1016/j.ijhydene.2011.04.022

Cited by 45 publications

(24 citation statements)

References 25 publications

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“…In energy efficiency both the output and inputs are expressed in terms of energy, while for exergy efficiency they are expressed in terms of exergy. The energy efficiency of a sustainable hydrogen generation facility is defined with (16) where _ m is the mass flow rate of hydrogen produced, LHV is the lower heating value of hydrogen (121 MJ/kg) and E in is the energy input to drive the process. The exergy efficiency is defined with…”

Section: Resultsmentioning

confidence: 99%

“…From Eqs. (16) and (17) a hydrogen exergy quality factor g can be introduced which expresses the ratio between chemical exergy and LHV of hydrogen. This factor has the value of g ¼ 0.97 Using g as the hydrogen exergy quality factor the ratio between j and h is…”

Section: Resultsmentioning

confidence: 99%

“…The platform will produce around 1000 kmol hydrogen per year with sulphur as by-product at an estimated cost ten times higher than conventional steam methane reforming. An integrated system that extracts electrochemically hydrogen, sulphur, salt and drinking water from deep Black Sea waters was proposed by [16]. Based on data from [16] it results that, if renewable energy is used to drive the processes, the estimated energy efficiency for hydrogen production is w2% when extracted from Black Sea, or w4% if extracted from industrial waste waters containing hydrogen sulphide.…”

Section: Photonic Hydrogen Production Systemsmentioning

confidence: 99%

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Sustainable hydrogen production options and the role of IAHE

Dinçer

Zamfirescu

2012

International Journal of Hydrogen Energy

171

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Photonic Hydrogen Production Systemsmentioning

confidence: 99%

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Sustainable hydrogen production options and the role of IAHE

Dinçer

Zamfirescu

2012

International Journal of Hydrogen Energy

171

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“…[102] The cost of H 2 from H 2 Si nB lack Sea deep water may gradually shift closert ot hat of H 2 from solar-driven water electrolysis in the long term. [103] Hydrogenp eroxide (H 2 O 2 )i saclean and sustainable energy source,b ecause the decomposition products are only water and oxygen, and H 2 O 2 is produced from water and dioxygen using solar energy. [104][105][106][107][108][109][110][111][112] H 2 O 2 is superior to H 2 or natural gas, owing to its safe storage and convenient transportation in liquid form.…”

Section: Hydrogenfrom Black Sea Deep Watermentioning

confidence: 99%

Fuel Production from Seawater and Fuel Cells Using Seawater

2017

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Seawater is the most abundant resource on our planet and fuel production from seawater has the notable advantage that it would not compete with growing demands for pure water. This Review focuses on the production of fuels from seawater and their direct use in fuel cells. Electrolysis of seawater under appropriate conditions affords hydrogen and dioxygen with 100 % faradaic efficiency without oxidation of chloride. Photoelectrocatalytic production of hydrogen from seawater provides a promising way to produce hydrogen with low cost and high efficiency. Microbial solar cells (MSCs) that use biofilms produced in seawater can generate electricity from sunlight without additional fuel because the products of photosynthesis can be utilized as electrode reactants, whereas the electrode products can be utilized as photosynthetic reactants. Another important source for hydrogen is hydrogen sulfide, which is abundantly found in Black Sea deep water. Hydrogen produced by electrolysis of Black Sea deep water can also be used in hydrogen fuel cells. Production of a fuel and its direct use in a fuel cell has been made possible for the first time by a combination of photocatalytic production of hydrogen peroxide from seawater and dioxygen in the air and its direct use in one‐compartment hydrogen peroxide fuel cells to obtain electric power.

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“…Since studies on estimation of stock size, recruitment, catch per unit of effort and bycatch are quite lacking, it can be stated that Turkey's marine resources are in more of a desperate situation than the globally. The Black Sea is one of the world's largest semienclosed seas and the Turkish Black Sea coast has a narrow continental shelf as well as anoxic layer below 200 meters in depth, (Zaitsev and Mamaev, 1997;Badescu, 2007;Petrov et al, 2011), which limits the habitable area for aquatic life around this coast. In 2012, 432,000 tons of catches were obtained by fishing in Turkey, 71% of which came from the Black Sea (TUİK, 2013).…”

Section: Cemalettin şAhin* Yusuf Ceylan Ferhat Kalaycımentioning

confidence: 99%

Untitled

Şahin¹,

Ceylan²,

Kalayci³

2015

Turk. J. Fish. Aquat. Sci.

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The purpose of this study was to determine the amount of bycatch and discards of the purse seine fishery in the Black Sea coastal waters of Turkey. The study was conducted during the September 2009-April 2010 fishing season, sixteen purse seiner operations were sampled and their catch composition was determined. During the samplings, 26 species consisting of fish (24 species), gastropods (1 species), and crab (1 species) were caught. Two species, Engraulisen crasicolus and Trachurus mediterraneus were targeted in the operations. The total biomass was 115958.34 kg, of which 97.83 % (by weight) were identified as target species, and 2.17 % as bycatch. The weighed discard rate was determined as 1.64 %. Discard ratios of anchovy and horse mackerel operations were 1.65 % and 1.47 %, respectively. Based on depth, three depth groups were identified in terms of the amount and number of discards (G1, G2, G3) using cluster and MDS analyses. Ecological parameters of the landed and discarded groups were significantly different (ANOVA test, P<0.05). Discards from the coastal area were completely different from other ones; the result was obtained by a post-hoc multiple comparison test.Keywords: Bycatch, discard, non-target, purse seine, Black Sea Karadeniz Kıyılarında (Türkiye) Gırgır Avcılığı Iskartaları ÖzetÇalışmanın amacı, Türkiye'nin Karadeniz kıyısal sularında gırgır avcılığının bycatch ve ıskarta miktarlarını ve kıyısal ekosisteme olan etkilerini belirlemektir. Çalışma Eylül 2009-Nisan 2010 tarihleri arasında av sezonu boyunca yapılmış ve on altı operasyon örneklenerek av kompozisyonları belirlenmiştir. Örneklemeler esnasında 26 canlı yakalanmış olup bunlar; 24 tür balık, 1 tür gastropod ve 1 tür yengeçtir. Operasyonlarda iki tür hedeflenmiştir, bunlar hamsi (Engraulisencrasicolus)ve istavrittir(Trachurusmediterraneus). Toplam 115958,34 kg biokütle elde edilmiş olup; bunun % 97,83'ü hedef av, %2,16'sı tesadüfi av ve % 1,64'si ise ıskarta olarak tespit edilmiştir. Hamsi ve istavrit operasyonlarında ıskarta oranı sırasıyla % 1,65 ve %1,47' dir. Cluster ve MDS analizleri sonucunda derinliğe bağlı olarak ıskarta sayısı ve miktarı açısından üç farklı derinlik grubu (G1, G2, G3) belirlenmiştir. Pazarlanan ve ıskarta edilen grupların ekolojik parametreleri arasında önemli farklılıklar tespit edilmiştir (ANOVA test, P<0.05). Post-hoc çoklu karşılaştırma analizleri sonucunda, kıyı derinlik grubunun ıskartasının diğerlerinden farklı olduğu anlaşılmıştır.

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An assessment of electrolytic hydrogen production from H 2 S in Black Sea waters

Cited by 45 publications

References 25 publications

Sustainable hydrogen production options and the role of IAHE

Sustainable hydrogen production options and the role of IAHE

Fuel Production from Seawater and Fuel Cells Using Seawater

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