scholarly journals The freshwater landscape: lake, wetland, and stream abundance and connectivity at macroscales

Ecosphere ◽  
2017 ◽  
Vol 8 (8) ◽  
pp. e01911 ◽  
Author(s):  
Carol Emi Fergus ◽  
Jean-François Lapierre ◽  
Samantha K. Oliver ◽  
Nicholas K. Skaff ◽  
Kendra S. Cheruvelil ◽  
...  
Keyword(s):  
Landscape Lake

Landscape–lake interactions in the Beartooth Mountains, Wyoming: a 350-year fire history reconstruction

2020 ◽  
Vol 64 (2) ◽  
pp. 107-119 ◽  
Author(s):  
Sabrina R. Brown ◽  
Jeffery R. Stone ◽  
David McLennan ◽  
Jennifer Latimer ◽  
Karlyn S. Westover
Keyword(s):  
Fire History ◽  
Landscape Lake

The Ecological Engineering Mode Design for the Purification of Miniature Landscape Lake

2012 ◽  
Vol 209-211 ◽  
pp. 305-309
Author(s):  
Liu Guo ◽  
Feng Mei Hu
Keyword(s):  
Water Quality ◽  
Grass Carp ◽  
Rational Design ◽  
Higher Plants ◽  
Ecological Engineering ◽  
Purification Method ◽  
Mode Design ◽  
Landscape Lake ◽  
Filter Feeders ◽  
Ideal Method

According to the requirement of water quality function of the miniature landscape lake, the ecological engineering mode has been used to search for the purification method of miniature landscape lake through rational design for size and density of filter feeders, plant-eating fish and aquatic higher plants. The predication results show that: The chub and bighead with the dosing density of 300 fix phosphorus 11.767 kg. The mussels with the dosing density of 0.15 fix phosphorus 1.731 kg. The phosphorus fixed by 70 grass carp and lotus is 0.192 kg and 1.5 kg. The removal of phosphorus is total 15.19 kg, which exceeds the annual phosphorus input of the lake. The prediction effect on ecological engineering mode design is ideal and it can be looked as an ideal method to purify miniature landscape lakes.

scholarly journals Selective Mineralization and Recovery of Au(III) from Multi-ionic Aqueous Systems by Microorganisms

2019 ◽  
Author(s):  
Yangjian Cheng ◽  
Zhibin Ke ◽  
Xiaojing Bian ◽  
Jianhua Zhang ◽  
Zhen Huang ◽  
...  
Keyword(s):  
Bacillus Licheniformis ◽  
Precious Metals ◽  
Aqueous Systems ◽  
Tem Analysis ◽  
Aqua Regia ◽  
Bacterial Surface ◽  
Landscape Lake ◽  
20 Nm ◽  
Coexisting Ions ◽  
Phosphate Groups

The recovery of precious metals is a project with both economic and environmental significance. In this paper, it presents how to use bacterial mineralization to selectively recover gold from multi-ionic aqueous systems. The Bacillus licheniformis FZUL-63, separated from a landscape lake in FuZhou University, was shown to selectively mineralize and precipitate gold from coexisting ions in aqueous solution. The removal of Au(III) was almost happened in first hour, and FTIR data show that the amino, carboxyl and phosphate groups on the surface of the bacteria are related to the adsorption of gold ions. XPS results implied that Au(III) ions are reduced to monovalent, and then the Au(I) was adsorbed on the bacterial surface at the beginning stage(first hour). XRD results showed the gold biomineralization began about 10 hours after the interaction between Au(III) ions and bacteria. The Au(III) mineralization has been rarely influenced by other co-existing metal ions. TEM analysis shows the gold nanoparticles are polyhedral structure with a particle size of ~20 nm. The Bacillus licheniformis FZUL-63 could selectively mineralize and recover 478 mg/g(dry biomass) gold from aqua regia-based metal wastewater through four cycles. It could be of great potential in the practical application.

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