scholarly journals Can we use mine waste as substrate in constructed wetlands to intensify nutrient removal? A critical assessment of key removal mechanisms and long-term environmental risks

2021 ◽  
pp. 118009
Author(s):  
Ruigang Wang ◽  
Xin Zhao ◽  
Tiecheng Wang ◽  
Zizhang Guo ◽  
Zhen Hu ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Nutrient Removal ◽  
Mine Waste ◽  
Environmental Risks ◽  
Critical Assessment ◽  
Removal Mechanisms

Phosphorus removal by apatite in horizontal flow constructed wetlands for small communities: pilot and full-scale evidence

2011 ◽  
Vol 63 (8) ◽  
pp. 1629-1637 ◽  
Author(s):  
N. Harouiya ◽  
S. Martin Rue ◽  
S. Prost-Boucle ◽  
A. Liénar ◽  
D. Esser ◽  
...  
Keyword(s):  
Constructed Wetlands ◽  
Particle Surface ◽  
Full Scale ◽  
Retention Capacity ◽  
Small Communities ◽  
Lab Experiments ◽  
Apatite Mineral ◽  
Kinetics Of ◽  
P Removal

Phosphorus (P) removals in constructed wetlands (CWs) have received particular attention in recent decades by using specific materials which promote adsorption/precipitation mechanisms. Recent studies have shown interest in using apatite materials to promote P precipitation onto the particle surface. As previous trials were mainly done by lab experiments, this present study aims to evaluate the real potential of apatites to remove P from wastewater in pilot units and a full-scale plant over a 2 year period. P retention kinetics of two qualities of apatites are presented and discussed. In this work apatite appears to have high retention capacity (>80% of P removal) and is still an interesting way for P removal in CWs for limiting the risk of eutrophication downstream of small communities. Nevertheless, the apatite quality appears to be of great importance for a reliable and long term P removal. The use of materials with low content of apatite mineral (40–50%) seems to be not economically relevant.

Environmental risks posed by heavy metal contamination from mine waste: Case study from northwest Iran

2018 ◽  
Vol 24 (6) ◽  
pp. 1532-1549
Author(s):  
S. Maryam Hosseini ◽  
Mana Kamranjam ◽  
Roger Brewer ◽  
Maryam Rezazadeh ◽  
Mahlagha Ghorbanli
Keyword(s):  
Heavy Metal ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Mine Waste ◽  
Environmental Risks ◽  
Northwest Iran
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