Distribution and genetic diversity of microbial populations in the pilot-scale biofilter for simultaneous removal of ammonia, iron and manganese from real groundwater

Chemosphere ◽  
2017 ◽  
Vol 182 ◽  
pp. 450-457 ◽  
Author(s):  
Qingfeng Cheng ◽  
Lichao Nengzi ◽  
Linlin Bao ◽  
Yang Huang ◽  
Shengyu Liu ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Pilot Scale ◽  
Microbial Populations ◽  
Simultaneous Removal ◽  
Iron And Manganese

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.

scholarly journals Genetic and Phenotypic Characterisation of a Saccharomyces cerevisiae Population of ‘Merwah’ White Wine

2019 ◽  
Vol 7 (11) ◽  
pp. 492 ◽  
Author(s):  
Nadine Feghali ◽  
Warren Albertin ◽  
Edouard Tabet ◽  
Ziad Rizk ◽  
Angela Bianco ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Genetic Diversity ◽  
Alcoholic Fermentation ◽  
Sugar Content ◽  
Wine Yeast ◽  
Pilot Scale ◽  
White Wine ◽  
High Genetic Diversity ◽  
Volatile Acidity ◽  
Phenotypic Characterisation

The study of yeast biodiversity represents an important step in the preservation of the local heritage, and this work in particular has an innovative character since no further studies have investigated ‘Merwah’, one of the main grape varieties used in winemaking in Lebanon. To gain deeper knowledge of the genetic diversity and population structure of native Saccharomyces cerevisiae wine strains, 202 isolates were collected during spontaneous alcoholic fermentation of eight must/wine samples of cultivar ‘Merwah’, over two consecutive years (2016, 2017) in a traditional winery in Mount Lebanon (1400 m a.s.l.). The isolates were identified as S. cerevisiae on the basis of their morphology and preliminary sequence analysis of their internal transcribed spacer (ITS) PCR. They were then characterised at the strain level by interdelta PCR and genotyped using multiplex PCR reactions of 12 microsatellite markers. High genetic diversity was observed for the studied population. To select potential yeast starter strains from this population, micro-fermentations were carried out for 22 S. cerevisiae strains that were selected as representative of the ‘Merwah’ wine yeast population in order to determine their technological and oenological properties. Three indigenous yeast strains might represent candidates for pilot-scale fermentation in the winery, based on relevant features such as high fermentation vigour, low production of volatile acidity and H2S and low residual sugar content at the end of alcoholic fermentation.

Simultaneous removal of iron and manganese from acid mine drainage by acclimated bacteria

2020 ◽  
Vol 396 ◽  
pp. 122631 ◽  
Author(s):  
Dongmei Hou ◽  
Pan Zhang ◽  
Dongning Wei ◽  
Jiachao Zhang ◽  
Binghua Yan ◽  
...  
Keyword(s):  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Simultaneous Removal ◽  
Acid Mine ◽  
Iron And Manganese

scholarly journals Genetic Diversity Affects the Daily Transcriptional Oscillations of Marine Microbial Populations

PLoS ONE ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. e0146706 ◽  
Author(s):  
Irina N. Shilova ◽  
Julie C. Robidart ◽  
Edward F. DeLong ◽  
Jonathan P. Zehr
Keyword(s):  
Genetic Diversity ◽  
Microbial Populations
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