scholarly journals On the analysis of phenol removal from drinking water by batch reactor using powdered eggshell Giti

2017 ◽  
Vol 10 (2) ◽  
pp. 276-286 ◽  
Author(s):  
Kashi Kashi
Keyword(s):  
Drinking Water ◽  
Batch Reactor ◽  
Phenol Removal

scholarly journals POTENTIAL OF PHENOL REMOVAL BY LOW COST ADSORBENT IN A BATCH REACTOR

2012 ◽  
Vol 6 (1) ◽  
pp. 39-43
Author(s):  
SIVASUBRAMANIAN S ◽  
RENGASAMY M ◽  
BRINDA LAKSHMI A
Keyword(s):  
Batch Reactor ◽  
Low Cost ◽  
Phenol Removal

Removal of Phenol from Organic System by Using Ionic Liquids

2019 ◽  
Vol 6 (2) ◽  
pp. 126-133 ◽  
Author(s):  
Ciji S. Mathews ◽  
Vikas K. Bhosale ◽  
Prashant S. Kulkarni ◽  
Sanjay P. Kamble
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Removal Efficiency ◽  
Batch Reactor ◽  
Volume Ratio ◽  
Solvent Mixture ◽  
Selective Removal ◽  
Phenol Removal ◽  
Organic System ◽  
Industrial Use

Objective: Selective removal of phenol from organic solvent mixture (benzene + toluene + hexane) or other petroleum by-products have a major concern. Hence, the experiments were conducted on the removal of phenol from synthetically prepared phenolic organic waste by using a green process, ionic liquids. Methods: The ionic liquids, 1-ethyl-3-methyl imidazolium cyanoborohydride, and 1- butyl-3-methyl imidazolium hexafluorophosphate were used for the extraction study. The effect of various operating parameters such as the type of ionic liquids, effluent temperature, extraction time, and the phase volume ratio of ionic liquid and phenol has been studied in details. The ionic liquid, 1-ethyl-3-methyl imidazolium cyanoborohydride selectively extracted 95 % of the phenol from the synthetically prepared organic oil mixture of benzene and toluene, with an initial phenol concentration was 100 ppm. Further, ionic liquids were recycled and reused for six consecutive studies with removal efficiency of about 74%. Additionally, a batch reactor study was conducted to find the process viability for industrial use and 92% phenol removal efficiency was achieved. Results: The study demonstrates the selective removal of phenol from petroleum oil using ionic liquids is a simple and environmentally friendly process for industrial use. Conclusion: This method cannot only extract phenol but also phenol-derived compounds may be extracted from hydrocarbon oil.

Removal of Phenol from Water: A Comparison of Energization Methods

2005 ◽  
Vol 8 (2) ◽  
Author(s):  
Lukas R. Grabowski ◽  
Eddie M. van Veldhuizen ◽  
Wijnand R. Rutgers
Keyword(s):  
Energy Efficiency ◽  
Thin Layer ◽  
Chemical Reactions ◽  
Ozone Concentration ◽  
Batch Reactor ◽  
Phenol Degradation ◽  
Volume Ratio ◽  
Phenol Removal ◽  
Initial Testing ◽  
Fe Ions

AbstractDirect electrical energization methods for removal of persistent substances from water are under investigation in the framework of the ytriD-project. The emphasis of the first stage of the project is the energy efficiency. A comparison is made between a batch reactor with a thin layer of water and an aerosol reactor. The method of energization is mainly the application of fast pulses. In case of the batch reactor it is compared with DC. The ozone concentration is determined as an indicator for the efficiency of the chemical reactions, the yield is 4 g/kWh for the DC batch reactor, 50 g/kWh for the pulsed batch reactor and 50-100 g/kWh for the aerosol reactor. For initial testing phenol degradation is determined. 50% of the initial 0.1 mM is reached in 8 min in the pulsed batch reactor and less than 30 s in the aerosol reactor. The phenol removal speeds up by a factor 3 upon the addition of Fe-ions. Matlab simulations confirm that the surface-to-volume ratio is an important parameter for the speed of phenol degradation.

Modelling of phenol removal in a batch reactor

2005 ◽  
Vol 40 (3-4) ◽  
pp. 1233-1239 ◽  
Author(s):  
Alper Nuhoglu ◽  
Beste Yalcin
Keyword(s):  
Batch Reactor ◽  
Phenol Removal

scholarly journals Genomic Analysis and Stability Evaluation of the Phenol-Degrading Bacterium Acinetobacter sp. DW-1 During Water Treatment

2021 ◽  
Vol 12 ◽  
Author(s):  
Qihui Gu ◽  
Moutong Chen ◽  
Jumei Zhang ◽  
Weipeng Guo ◽  
Huiqing Wu ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Treatment Group ◽  
Phenol Degradation ◽  
Genomic Analysis ◽  
Rrna Gene ◽  
Phenol Removal ◽  
Drinking Water Source ◽  
Degrading Bacterium ◽  
The Stability

Phenol is a toxic organic molecule that is widely detected in the natural environment, even in drinking water sources. Biological methods were considered to be a good tool for phenol removal, especially microbial immobilized technology. However, research on the “seed” bacteria along with microbial community analysis in oligotrophic environment such as drinking water system has not been addressed. In this study, Acinetobacter sp. DW-1 with high phenol degradation ability had been isolated from a drinking water biofilter was used as seeded bacteria to treat phenol micro-polluted drinking water source. Meanwhile, the whole genome of strain DW-1 was sequenced using nanopore technology. The genomic analysis suggests that Acinetobacter sp. DW-1 could utilize phenol via the β-ketoadipate pathway, including the catechol and protocatechuate branches. Subsequently, a bio-enhanced polyhedral hollow polypropylene sphere (BEPHPS) filter was constructed to investigate the stability of the seeded bacteria during the water treatment process. The denatured gradient gel electrophoresis (DGGE) profile and the quantification of phenol hydroxylase gene results indicate that when the BEPHPS filter was operated for 56 days, Acinetobacter sp. was still a persistent and competitive bacterium in the treatment group. In addition, 16S rRNA gene amplicon sequencing results indicate that Acinetobacter sp., as well as Pseudomonas sp., Nitrospira sp., Rubrivivax sp. were the predominant bacteria in the treatment group, which were different from that in the CK group. This study provides a better understanding of the mechanisms of phenol degradation by Acinetobacter sp. DW-1 at the gene level, and provides new insights into the stability of seeded bacteria and its effects on microbial ecology during drinking water treatment.

Electrosynthesis of ferrate in a batch reactor at neutral conditions for drinking water applications

2018 ◽  
Vol 96 (8) ◽  
pp. 1648-1655 ◽  
Author(s):  
Macarena A. Cataldo-Hernández ◽  
Rubenthran Govindarajan ◽  
Arman Bonakdarpour ◽  
Madjid Mohseni ◽  
David P. Wilkinson
Keyword(s):  
Drinking Water ◽  
Batch Reactor ◽  
Neutral Conditions

Habitat Association of Klebsiella Species

1985 ◽  
Vol 6 (2) ◽  
pp. 52-58 ◽  
Author(s):  
Susan T. Bagley
Keyword(s):  
Drinking Water ◽  
Gastrointestinal Tract ◽  
Surface Waters ◽  
Industrial Effluents ◽  
Opportunistic Pathogen ◽  
Habitat Associations ◽  
Habitat Association ◽  
Klebsiella Species ◽  
Almost All ◽  
Polluted Waters

AbstractThe genus Klebsiella is seemingly ubiquitous in terms of its habitat associations. Klebsiella is a common opportunistic pathogen for humans and other animals, as well as being resident or transient flora (particularly in the gastrointestinal tract). Other habitats include sewage, drinking water, soils, surface waters, industrial effluents, and vegetation. Until recently, almost all these Klebsiella have been identified as one species, ie, K. pneumoniae. However, phenotypic and genotypic studies have shown that “K. pneumoniae” actually consists of at least four species, all with distinct characteristics and habitats. General habitat associations of Klebsiella species are as follows: K. pneumoniae—humans, animals, sewage, and polluted waters and soils; K. oxytoca—frequent association with most habitats; K. terrigena— unpolluted surface waters and soils, drinking water, and vegetation; K. planticola—sewage, polluted surface waters, soils, and vegetation; and K. ozaenae/K. rhinoscleromatis—infrequently detected (primarily with humans).

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