scholarly journals Efficient direct seawater electrolysers using selective alkaline NiFe-LDH as OER catalyst in asymmetric electrolyte feeds

2020 ◽  
Vol 13 (6) ◽  
pp. 1725-1729 ◽  
Author(s):  
Sören Dresp ◽  
Trung Ngo Thanh ◽  
Malte Klingenhof ◽  
Sven Brückner ◽  
Philipp Hauke ◽  
...  
Keyword(s):  
Natural Seawater ◽  
Electrolyte Flow ◽  
Flow Scheme

Increasing the performance of seawater electrolyser and enabling direct natural seawater feed by asymmetric electrolyte flow scheme.

TEM study of a biofilm on copper corrosion

1996 ◽  
Vol 54 ◽  
pp. 220-221
Author(s):  
W. A. Chiou ◽  
N. Kohyama ◽  
B. Little ◽  
P. Wagner ◽  
M. Meshii
Keyword(s):  
Marine Bacterium ◽  
Culture Medium ◽  
Copper Alloys ◽  
Pure Copper ◽  
Localized Corrosion ◽  
Natural Seawater ◽  
Copper Corrosion ◽  
New Approach ◽  
The Past ◽  
Copper Tolerant

The corrosion of copper and copper alloys in a marine environment is of great concern because of their widespread use in heat exchangers and steam condensers in which natural seawater is the coolant. It has become increasingly evident that microorganisms play an important role in the corrosion of a number of metals and alloys under a variety of environments. For the past 15 years the use of SEM has proven to be useful in studying biofilms and spatial relationships between bacteria and localized corrosion of metals. Little information, however, has been obtained using TEM capitalizing on its higher spacial resolution and the transmission observation of interfaces. The research presented herein is the first step of this new approach in studying the corrosion with biological influence in pure copper.Commercially produced copper (Cu, 99%) foils of approximately 120 μm thick exposed to a copper-tolerant marine bacterium, Oceanospirillum, and an abiotic culture medium were subsampled (1 cm × 1 cm) for this study along with unexposed control samples.

Commercial aqueous additives as used eco-friendly corrosion inhibitors for carbon steel in natural seawater

2020 ◽  
Vol 65 (1) ◽  
pp. 77-82
Author(s):  
Simona CAPRARESCU ◽  
◽  
Violeta PURCAR ◽  
Cristina MODROGAN ◽  
◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Natural Seawater

Proposal of a Flow scheme for the Chemical-form-based Quantitative analysis of Chlorine compounds in Pulp for Sanitary products and Safety assessment

2018 ◽  
Vol 72 (11) ◽  
pp. 1243-1250
Author(s):  
Shigeo Imai ◽  
Mitsuhiro Wada ◽  
Takeharu Wada ◽  
Kei Iwasaki ◽  
Ritsuko Katagiri ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Safety Assessment ◽  
Chemical Form ◽  
Flow Scheme ◽  
Sanitary Products

New searching flow scheme for incremental backprojection algorithm

1992 ◽  
Vol 28 (12) ◽  
pp. 1089 ◽  
Author(s):  
Y.J. He ◽  
A. Cai ◽  
J.-A. Sun
Keyword(s):  
Flow Scheme

scholarly journals Does galvanic cathodic protection by aluminum anodes impact marine organisms?

2020 ◽  
Vol 32 (1) ◽  
Author(s):  
Anna Maria Bell ◽  
Marcus von der Au ◽  
Julia Regnery ◽  
Matthias Schmid ◽  
Björn Meermann ◽  
...  
Keyword(s):  
Marine Environment ◽  
Cathodic Protection ◽  
Algal Growth ◽  
Wind Farms ◽  
Marine Organisms ◽  
Offshore Wind ◽  
Natural Seawater ◽  
Corophium Volutator ◽  
Offshore Wind Farms ◽  
Ecotoxicological Effects

Abstract Background Cathodic protection by sacrificial anodes composed of aluminum-zinc-indium alloys is often applied to protect offshore support structures of wind turbines from corrosion. Given the considerable growth of renewable energies and thus offshore wind farms in Germany over the last decade, increasing levels of aluminum, indium and zinc are released to the marine environment. Although these metals are ecotoxicologically well-studied, data regarding their impact on marine organisms, especially sediment-dwelling species, as well as possible ecotoxicological effects of galvanic anodes are scarce. To investigate possible ecotoxicological effects to the marine environment, the diatom Phaedactylum tricornutum, the bacterium Aliivibrio fischeri and the amphipod Corophium volutator were exposed to dissolved galvanic anodes and solutions of aluminum and zinc, respectively, in standardized laboratory tests using natural seawater. In addition to acute toxicological effects, the uptake of these elements by C. volutator was investigated. Results The investigated anode material caused no acute toxicity to the tested bacteria and only weak but significant effects on algal growth. In case of the amphipods, the single elements Al and Zn showed significant effects only at the highest tested concentrations. Moreover, an accumulation of Al and In was observed in the crustacea species. Conclusions Overall, the findings of this study indicated no direct environmental impact on the tested marine organisms by the use of galvanic anodes for cathodic protection. However, the accumulation of metals in, e.g., crustaceans might enhance their trophic transfer within the marine food web.

The influence of zinc electrode substrate, electrolyte flow rate and current density on zinc-nickel flow cell performance

2021 ◽  
Vol 373 ◽  
pp. 137890
Author(s):  
David P. Trudgeon ◽  
Adeline Loh ◽  
Habib Ullah ◽  
Xiaohong Li ◽  
Vladimir Yufit ◽  
...  
Keyword(s):  
Flow Rate ◽  
Current Density ◽  
Flow Cell ◽  
Cell Performance ◽  
Zinc Electrode ◽  
Electrolyte Flow ◽  
Zinc Nickel

Effects of natural seawater mixing on the properties of alkali-activated slag binders

2021 ◽  
Vol 294 ◽  
pp. 123601
Author(s):  
Jie Ren ◽  
Hongfang Sun ◽  
Kun Cao ◽  
Zhili Ren ◽  
Bo Zhou ◽  
...  
Keyword(s):  
Natural Seawater ◽  
Alkali Activated Slag ◽  
Activated Slag ◽  
Alkali Activated

Cyclic Copper Uptake and Release from Natural Seawater—A Fully Sustainable Antifouling Technique to Prevent Marine Growth

2020 ◽  
Vol 55 (1) ◽  
pp. 757-766
Author(s):  
Sait Elmas ◽  
Karuna Skipper ◽  
Nahideh Salehifar ◽  
Tamar Jamieson ◽  
Gunther G. Andersson ◽  
...  
Keyword(s):  
Natural Seawater ◽  
Copper Uptake ◽  
Uptake And Release

Photoinduced Multiple Effects to Enhance Uranium Extraction from Natural Seawater by Black Phosphorus Nanosheets

2019 ◽  
Vol 132 (3) ◽  
pp. 1236-1243 ◽  
Author(s):  
Yihui Yuan ◽  
Biye Niu ◽  
Qiuhan Yu ◽  
Xin Guo ◽  
Zhanhu Guo ◽  
...  
Keyword(s):  
Black Phosphorus ◽  
Natural Seawater ◽  
Uranium Extraction

Mass transfer and electrolyte flow during electrodeposition on a conically shaped electrode under the influence of a magnetic field

2019 ◽  
Vol 842 ◽  
pp. 203-213 ◽  
Author(s):  
M. Huang ◽  
G. Marinaro ◽  
X. Yang ◽  
B. Fritzsche ◽  
Z. Lei ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Mass Transfer ◽  
Electrolyte Flow
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