New data about optic properties of biominerals from some brown algae Undaria pinnatifida and Laminaria japonica

2016 ◽  
Author(s):  
I. E. Pamirsky ◽  
G. Chung ◽  
S. A. Gutnikov ◽  
K. S. Golokhvast
Keyword(s):  
Brown Algae ◽  
Undaria Pinnatifida ◽  
Laminaria Japonica

Biosorption of uranium(VI) from aqueous solution by biomass of brown algae Laminaria japonica

2014 ◽  
Vol 70 (1) ◽  
pp. 136-143 ◽  
Author(s):  
K. Y. Lee ◽  
K. W. Kim ◽  
Y. J. Baek ◽  
D. Y. Chung ◽  
E. H. Lee ◽  
...  
Keyword(s):  
Particle Size ◽  
Brown Algae ◽  
Activated Carbons ◽  
Laminaria Japonica ◽  
Limiting Factor ◽  
Stable Operation ◽  
Experimental Conditions ◽  
Wastewater Treatment Process ◽  
Radioactive Wastewater ◽  
Ionic Diffusivity

The uranium(VI) adsorption efficiency of non-living biomass of brown algae was evaluated in various adsorption experimental conditions. Several different sizes of biomass were prepared using pretreatment and surface-modification steps. The kinetics of uranium uptake were mainly dependent on the particle size of the prepared Laminaria japonica biosorbent. The optimal particle size, contact time, and injection amount for the stable operation of the wastewater treatment process were determined. Spectroscopic analyses showed that uranium was adsorbed in the porous inside structure of the biosorbent. The ionic diffusivity in the biomass was the dominant rate-limiting factor; therefore, the adsorption rate was significantly increased with decrease of particle size. From the results of comparative experiments using the biosorbents and other chemical adsorbents/precipitants, such as activated carbons, zeolites, and limes, it was demonstrated that the brown algae biosorbent could replace the conventional chemicals for uranium removal. As a post-treatment for the final solid waste reduction, the ignition treatment could significantly reduce the weight of waste biosorbents. In conclusion, the brown algae biosorbent is shown to be a favorable adsorbent for uranium(VI) removal from radioactive wastewater.

Removal of methylene blue by chemically modified defatted brown algae Laminaria japonica

2017 ◽  
Vol 80 ◽  
pp. 525-532 ◽  
Author(s):  
Huasen Shao ◽  
Yaowei Li ◽  
Liuchun Zheng ◽  
Tixian Chen ◽  
Jian Liu
Keyword(s):  
Methylene Blue ◽  
Brown Algae ◽  
Laminaria Japonica ◽  
Chemically Modified

Promising antidiabetic potential of fucoxanthin isolated from the edible brown algae Eisenia bicyclis and Undaria pinnatifida

2012 ◽  
Vol 78 (6) ◽  
pp. 1321-1329 ◽  
Author(s):  
Hyun Ah Jung ◽  
Md. Nurul Islam ◽  
Chan Mee Lee ◽  
Hyong Oh Jeong ◽  
Hae Young Chung ◽  
...  
Keyword(s):  
Brown Algae ◽  
Undaria Pinnatifida ◽  
Eisenia Bicyclis

scholarly journals Anti-inflammatory Activities of Undaria pinnatifida and Laminaria japonica (Phaeophyta)

2007 ◽  
Vol 10 (3) ◽  
pp. 127-132 ◽  
Author(s):  
Ji-Young Cho ◽  
Ji-Young Kang ◽  
Mohammed Nurul Absar Khan ◽  
Nam-Hee Park ◽  
Sang-Kwon Kim ◽  
...  
Keyword(s):  
Undaria Pinnatifida ◽  
Laminaria Japonica ◽  
Anti Inflammatory
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