Performance and microbial community profiles in pilot-scale biofilter for the simultaneous removal of ammonia, iron and manganese at different manganese concentrations

2019 ◽  
Vol 42 (5) ◽  
pp. 741-752 ◽  
Author(s):  
Qingfeng Cheng ◽  
Yang Huang ◽  
Lichao Nengzi ◽  
Jie Zhang
Keyword(s):  
Microbial Community ◽  
Pilot Scale ◽  
Simultaneous Removal ◽  
Iron And Manganese ◽  
Manganese Concentrations

scholarly journals The simultaneous removal of bisphenol A, manganese and ammonium from groundwater by MeOx: The role of chemical catalytic oxidation for bisphenol A

2021 ◽  
Author(s):  
Yingming Guo ◽  
Ben Ma ◽  
Jianxiong Huang ◽  
Jing Yang ◽  
Ruifeng Zhang
Keyword(s):  
Oxide Film ◽  
Bisphenol A ◽  
Dissolved Oxygen ◽  
Oxidation Process ◽  
Pilot Scale ◽  
Simultaneous Removal ◽  
Chemical Forms ◽  
Synergy Effect ◽  
Iron And Manganese

Abstract The iron and manganese oxide filter film (MeOx) were used to research the simultaneous removal of bisphenol A (BPA), manganese (Mn2+) and ammonium (NH4+) in a pilot-scale filter system. We found that 0.52 mg/L of BPA could be removed while consuming 5.44 mg/L of dissolved oxygen (DO). Since the oxidation process of NH4+ and BPA both consume the DO in water, the presence of NH4+ can hinder the removal of BPA. The presence of Mn2+ in water had a synergy effect on the BPA removal. The filter film was characterized by SEM, XRD and XPS. Some substances were generated to block the pores of the oxide film, and a small amount of film was found to crack and fall off. The elemental composition of C and O were both increased by about 9%, the composition of Mn was decreased from 63.48% to 44.55%, and the reduced manganese substance might affect the activity of the oxide film. The main chemical forms of MeOx are Mn6O12·3H2O, MnFe2O4 or Mn3O4. The decrease in the removal efficiency of BPA was mainly due to the C-containing intermediate [−CH2C − H(OH)]n covering the surface of the oxide film and blocking the pore size of the film.

Microbial community in a pilot-scale bioreactor promoting anaerobic digestion and sulfur-driven denitrification for domestic sewage treatment

2015 ◽  
Vol 39 (2) ◽  
pp. 341-352 ◽  
Author(s):  
Flávia Talarico Saia ◽  
Theo S. O. Souza ◽  
Rubens Tadeu Delgado Duarte ◽  
Eloisa Pozzi ◽  
Débora Fonseca ◽  
...  
Keyword(s):  
Microbial Community ◽  
Anaerobic Digestion ◽  
Sewage Treatment ◽  
Pilot Scale ◽  
Domestic Sewage
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