Hydrogen and bromine production from concentrated sea-water

Yalçin, Hayri; Koç, Timur; Pamuk, Vecihi

doi:10.1016/s0360-3199(96)00214-5

Cited by 20 publications

(19 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reason for this finding is not clear, but it might be attributed to chemical reactions with seawater induced by the electrodes. Indeed, electrolysis of the anode might release metal ions into the environment, and a secondary production of oxidants, such as chlorine and bromine, may occur (Stewart 1972;Yalçin et al 1997). Oxidants including ozone are known to delay or reduce the hatchability of Atlantic Cod eggs (Grotmol et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Impact of Pulsed Direct Current on Embryos, Larvae, and Young Juveniles of Atlantic Cod and its Implications for Electrotrawling of Brown Shrimp

et al. 2017

View full text Add to dashboard Cite

The application of electrical pulses in fishing gear is considered a promising option to increase the sustainability of demersal trawl fisheries. In the electrotrawl fishery for brown shrimp Crangon crangon, an electrical field selectively induces a startle response in the shrimp. Other benthic organisms remain mainly on the seafloor and escape underneath a hovering trawl. Previous experiments have indicated that this pulse has no short‐term major harmful effects on adult fish and invertebrates. However, the impact on young marine life stages is still unknown. Because brown shrimp are caught in shallow coastal zones and estuaries, which serve as important nurseries or spawning areas for a wide range of marine species, electrotrawling on these grounds could harm embryos, larvae, and juveniles. We carried out experiments with different developmental stages of Atlantic Cod Gadus morhua, which are considered vulnerable to electrical pulses. Three embryonic stages, four larval stages, and one juvenile stage of Atlantic Cod were exposed to a homogeneous electrical field of 150 Vpeak/m for 5 s, mimicking a worst‐case scenario. We detected no significant differences in embryo mortality rate between control and exposed groups. However, for the embryonic stage exposed at 18 d postfertilization, the initial hatching rate was lower. Larvae that were exposed at 2 and 26 d posthatch exhibited higher mortality rates than the corresponding nonexposed control groups. In the other larval and juvenile stages, no short‐term impact of exposure on survival was observed. Morphometric analysis of larvae and juveniles revealed no differences in measurements or deformations of the yolk, notochord, eye, or head. Although exposure to a worst‐case electrical field did not impact survival or development for six of the eight young life stages of Atlantic Cod, the observed delayed hatching rate and decreased survival for larvae might indicate an impact of electric pulses and warrant further research.

show abstract

Section: Discussionmentioning

confidence: 99%

Impact of Pulsed Direct Current on Embryos, Larvae, and Young Juveniles of Atlantic Cod and its Implications for Electrotrawling of Brown Shrimp

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Potassium bromide was supplied by Shanghai no. 4 Reagent & H.V. Chemical Co., Ltd (Shanghai, China).…”

Section: Methodsmentioning

confidence: 99%

“…The large-scale use of enormous quantities of seawater as a major raw material for bromine manufacturing will eventually become the only option. [3][4][5] There are various methods for the extraction of bromine from seawater, the earliest known method is tribromoaniline precipitation, others include the air blow-out method, gaseous membrane method, emulsion liquid membrane method, agitated bulb membrane absorption method, adsorbent method, ion exchange resin method, etc. 6,7 The mainstream method for bromine production at present, the air blow-out method was developed by Dow Chemical Company, US, and has the advantages of strong adaptability for bromine-containing raw materials and ease of automatic control, so it can be used for the extraction of bromine from seawater with a low bromine content.…”

Section: Introductionmentioning

confidence: 99%

Adsorption performance for bromine ion using bromide ion–lanthanum nitrate modified chitosan imprinted polymer

Qiu

2014

Anal. Methods

View full text Add to dashboard Cite

show abstract

“…The red dotted line represents the marine composition line (mixing line), joining the end-members-fresh water (SW-SP) and Aegean seawater (green and blue star respectively). It is noted that the ion concentrations of the Aegean seawater were taken from [30].…”

Section: Water Qualitymentioning

confidence: 99%

A Transient ElectroMagnetic (TEM) Method Survey in North-Central Coast of Crete, Greece: Evidence of Seawater Intrusion

et al. 2018

View full text Add to dashboard Cite

Seawater intrusion into near-shore aquifers is one of the main environmental problems that affect Mediterranean islands. Crete is the biggest and most populated island of Greece, characterized by limited surface waters and strong dependence on groundwater sources as the primary source of natural water supply for extensive agricultural activity and human use. Freshwater demand in Crete has increased notably the last decades. The Geropotamos aquifer is located on the north-central coast of Crete and freshwater management is in a delicate balance with saltwater at coastal areas of the aquifer due to the scarce precipitation and high evaporation as well as the intense over exploitation of the groundwater resources. The geological setting of the study area is considered complex and the local tectonic regime is characterized by two sets of faults orientated NW-SE and NE-SW. Investigation of the aquifer using a survey grid of 1179 Transient ElectroMagnetic soundings (TEM) in 372 sites, has resulted in 1D models, and 2D/3D visualization of geoelectric structures, depicting the zones of salination of groundwater in the aquifer. Geological mapping, hydro-lithological data and geochemical analysis of 24 water samples (22 boreholes and 2 springs) are in agreement with results obtained from TEM soundings, supporting our interpretation that the aquifer is degraded by saline intrusion which likely occurs along fractures in a fault zone, emphasising the critical role of fracture pathways in salination problems of coastal aquifers.

show abstract

Hydrogen and bromine production from concentrated sea-water

Cited by 20 publications

References 5 publications

Impact of Pulsed Direct Current on Embryos, Larvae, and Young Juveniles of Atlantic Cod and its Implications for Electrotrawling of Brown Shrimp

Impact of Pulsed Direct Current on Embryos, Larvae, and Young Juveniles of Atlantic Cod and its Implications for Electrotrawling of Brown Shrimp

Adsorption performance for bromine ion using bromide ion–lanthanum nitrate modified chitosan imprinted polymer

A Transient ElectroMagnetic (TEM) Method Survey in North-Central Coast of Crete, Greece: Evidence of Seawater Intrusion

Contact Info

Product

Resources

About