Propane biostimulation in biologically activated carbon (BAC) selects for bacterial clades adept at degrading persistent water pollutants

2015 ◽  
Vol 17 (8) ◽  
pp. 1405-1414 ◽  
Author(s):  
Kristin M. Mikkelson ◽  
Carissa L. Homme ◽  
Dong Li ◽  
Jonathan O. Sharp
Keyword(s):  
Activated Carbon ◽  
Microbial Community ◽  
Column Experiments ◽  
Water Pollutants

Biologically activated carbon column experiments were run with propane-amended and un-amended influents to determine how the microbial community responds to this form of biostimulation and the implications for contaminant attenuation.

Investigation of microbial safety of a full-scale ozonation and biological activated carbon process under high humidity and temperature conditions

2011 ◽  
Vol 64 (11) ◽  
pp. 2293-2298 ◽  
Author(s):  
Tiejun Qiao ◽  
Xihui Zhang ◽  
Guangxue Wu ◽  
Doris W. T. Au
Keyword(s):  
Activated Carbon ◽  
Microbial Community ◽  
Pathogenic Bacteria ◽  
Pseudomonas Stutzeri ◽  
Opportunistic Pathogen ◽  
Full Scale ◽  
Microbial Safety ◽  
Bacillus Brevis ◽  
Biological Activated Carbon ◽  
Particle Counts

Microbial safety of a full-scale ozonation and biological activated carbon (BAC) process was investigated by examining pathogens, microbial community and particle counts, with emphasis on the BAC effluent. The process is located at South China, where the average humidity and air temperature were 70–80% and 22–24 °C, respectively. A high diversity of microbial community existed on the BAC media. Three types of dominant bacteria were identified, including Chryseobacterium indologenes, Bacillus brevis and Pseudomonas stutzeri, accounting for 90–95% of total bacteria number. As to pathogenic bacteria and viruses, an opportunistic pathogen, Bacillus cereus, was detected on the BAC. Six types of invertebrates were also observed on the medium, including rotifer, cyclops, nematode, clodecera, nauplius and blood worm. Diversity and number of invertebrates in the BAC effluent were higher than those in the BAC influent. Particle counts were generally less than 50 CNT/mL, with the maximum of 500 CNT/mL during the initial filtration stage after backwashing.

scholarly journals Utilization of Agricultural Waste in Treating Water Pollutants

2010 ◽  
Vol 6 (2) ◽  
pp. 1017-1023
Author(s):  
N.R.A. El-Mouhty ◽  
H. M. H. Gad ◽  
A. Y. El-Naggar
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Activated Carbons ◽  
Agricultural Waste ◽  
Thermo Gravimetric Analysis ◽  
Raw Material ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
Water Pollutants ◽  
Date Pits

This study investigated the applicability of chemically (phosphoric acid) activated bagasse pith and date pits in the adsorption of water pollutants. The textural properties including porous parameters, monolayer equivalent surface area, total pore volumes, average pore radius, Methylene blue number and other physic-chemical characterization were investigated. The activated carbons were analyzed for moisture content, ash content. Ultimate analysis was done by using CHNS analyzer (Cairo University, Micro-analytical Center). To investigate the effect of phosphoric acid on the raw material, thermo gravimetric analysis (TGA) and differential thermo gravimetric (DTG) recordings were determined. The adsorption of heavy metals as pollutants, including Co, Sr, Cu, Cs, Pb, Cd, Ni, Fe, Zn, was studied in a batch experiments. Comparison of date pits activated carbon with commercial activated carbon was done, and the results indicated that using of prepared activated carbon for removal of Co, Sr, Cu, Cs, Pb, Cd, Ni,  Fe, Zn was  more effective than commercial activated carbon.

Removal of ammonium from groundwater using NaOH-treated activated carbon derived from corncob wastes: Batch and column experiments

2018 ◽  
Vol 180 ◽  
pp. 560-570 ◽  
Author(s):  
Mai Thi Vu ◽  
Huan-Ping Chao ◽  
Tuyen Van Trinh ◽  
Trinh Thi Le ◽  
Chu-Ching Lin ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Column Experiments
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