Behavior of Natural Estrogens in Reservoir: Investigations Based on Continuous Flow Experiments and Model Analysis

2012 ◽  
Vol 223 (6) ◽  
pp. 3307-3320 ◽  
Author(s):  
Reni Desmiarti ◽  
Jiefeng Li ◽  
Fusheng Li
Keyword(s):  
Continuous Flow ◽  
Model Analysis ◽  
Natural Estrogens ◽  
Flow Experiments

β-Cyclodextrin Polymers on Microcrystalline Cellulose as a Granular Media for Organic Micropollutant Removal from Water

2018 ◽  
Author(s):  
Diego Alzate-Sanchez ◽  
Yuhan Ling ◽  
Chenjun Li ◽  
Benjamin Frank ◽  
Reiner Bleher ◽  
...  
Keyword(s):  
Microcrystalline Cellulose ◽  
Continuous Flow ◽  
Granular Media ◽  
Anaerobic Biodegradation ◽  
Thin Coating ◽  
Micropollutant Removal ◽  
Cyclodextrin Polymers ◽  
Flow Experiments ◽  
Aerobic And Anaerobic ◽  
Cellulose Composite

This manuscript describes cyclodextrin polymers formed as a thin coating on microcrystalline cellulose. The resulting polymer/cellulose composite shows promising performance for removing organic pollutants from water and can be packed into columns for continuous-flow experiments. The polymer/cellulose composite also shows excellent resistance to aerobic and anaerobic biodegradation.

Automated generation of photochemical reaction data by transient flow experiments coupled with online HPLC analysis

2020 ◽  
Vol 5 (5) ◽  
pp. 912-920
Author(s):  
Christian P. Haas ◽  
Simon Biesenroth ◽  
Stephan Buckenmaier ◽  
Tom van de Goor ◽  
Ulrich Tallarek
Keyword(s):  
Continuous Flow ◽  
Photochemical Reaction ◽  
Hplc Analysis ◽  
Transient Flow ◽  
Data Sets ◽  
Automated Generation ◽  
Reaction Data ◽  
Flow Experiments

Competing homo- and crossdimerization reactions between coumarin and 1-methyl-2-quinolinone are investigated by transient continuous-flow experiments combined with online HPLC, enabling the generation and acquisition of large reaction data sets.

β-Cyclodextrin Polymers on Microcrystalline Cellulose as a Granular Media for Organic Micropollutant Removal from Water

2018 ◽  
Author(s):  
Diego Alzate-Sanchez ◽  
Yuhan Ling ◽  
Chenjun Li ◽  
Benjamin Frank ◽  
Reiner Bleher ◽  
...  
Keyword(s):  
Microcrystalline Cellulose ◽  
Continuous Flow ◽  
Granular Media ◽  
Anaerobic Biodegradation ◽  
Thin Coating ◽  
Micropollutant Removal ◽  
Cyclodextrin Polymers ◽  
Flow Experiments ◽  
Aerobic And Anaerobic ◽  
Cellulose Composite

This manuscript describes cyclodextrin polymers formed as a thin coating on microcrystalline cellulose. The resulting polymer/cellulose composite shows promising performance for removing organic pollutants from water and can be packed into columns for continuous-flow experiments. The polymer/cellulose composite also shows excellent resistance to aerobic and anaerobic biodegradation.

Fate and toxic effects of cyanide on aerobic treatment systems

2000 ◽  
Vol 42 (3-4) ◽  
pp. 125-129 ◽  
Author(s):  
M.R. Haghighi-Podeh ◽  
G. Siyahati-Ardakani
Keyword(s):  
Chemical Treatment ◽  
Continuous Flow ◽  
Biological Treatment ◽  
Toxic Effects ◽  
Aerobic Treatment ◽  
Chemical Methods ◽  
New Methods ◽  
Effective Technology ◽  
Flow Experiments ◽  
By Products

Many industries discharge significant quantities of cyanide into the environment. Removal of cyanide is a vital task of increasing importance. Currently, the chemical methods of treating cyanide wastewater are used worldwide. The high cost, disposal problems and toxic by-products formation of chemical methods for treating cyanide wastewater has opened the door for more investigation of new methods. This paper evaluates the fate and toxic effects of cyanide on aerobic treatment systems. Both batch and continuous flow experiments were performed. The results indicate that the aerobic biological treatment of cyanide wastewater is an effective technology, which offers many advantages over chemical treatment methods. The microbiological experimental results show that among the microorganisms present in the culture, oscillatoria, philodina, carchesium, pseudomonas and bacillus bacteria were resistant to cyanide and capable of biodegrading it. The results of this study indicate that biodegradation and sorption of cyanide are the most important and least important removal mechanisms, respectively.

Biodegradation of microcystin [Dha7]MC-LR by a novel microcystin-degrading bacterium in an internal airlift loop bioreactor

2015 ◽  
Vol 73 (2) ◽  
pp. 267-274 ◽  
Author(s):  
Yupin Phujomjai ◽  
Anchana Somdee ◽  
Theerasak Somdee
Keyword(s):  
Health Problem ◽  
Continuous Flow ◽  
Microtiter Plate ◽  
Degrading Bacterium ◽  
Flow Experiment ◽  
Airlift Loop ◽  
Bodies Of Water ◽  
Cluster Gene ◽  
Flow Experiments ◽  
By Products

Cyanobacterial hepatotoxin microcystins are a health problem found in bodies of water in Thailand. Bacteria capable of biodegrading microcystin [Dha7]MC-LR were isolated from the Bueng Nong Khot reservoir in Khon Kaen, Thailand. The bacterium Novosphingobium isolate KKU25s was shown to degrade [Dha7]MC-LR at a concentration of 25 μg l−1 at 30 °C within 24 h. Two intermediate by-products (linearized peptide and tetrapeptide) and a cluster gene (mlrA, mlrB, mlrC and mlrD) that encodes four putative enzymes involved in [Dha7]MC-LR degradation were detected in KKU25s. KKU25s was also shown to form strong biofilms in microtiter plate assays. These assays were carried out in preparation for use of the bacterium in a bioreactor for [Dha7]MC-LR degradation. In an internal airlift loop bioreactor, the biodegradation of [Dha7]MC-LR by the bacterium was established in batch and continuous flow experiments. In the batch experiment, KKU25s degraded [Dha7]MC-LR at a concentration of 25 μg l−1 at 30 °C within 24 h, whereas in the continuous flow experiment, KKU25s degraded the toxin at the same concentration within 36 h. This study demonstrated that this bacterium could potentially be used to remove microcystins from water.

scholarly journals The effect of free nitrous acid pretreatment on the anaerobic digestibility of thickened waste activated sludge

2021 ◽  
Author(s):  
Frances Chi Okoye
Keyword(s):  
Continuous Flow ◽  
Flow System ◽  
Acid Pretreatment ◽  
Free Nitrous Acid ◽  
Continuous Flow System ◽  
Batch Tests ◽  
Sludge Pretreatment ◽  
Significant Research ◽  
Anaerobic Digestibility ◽  
Flow Experiments

Sludge pretreatment technologies as an avenue to improve solids handling in a WWTP has gained attention and significant research efforts are being directed towards studying several available techniques. The use of FNA as a chemical pretreatment for the AD has shown the potential to enhance the hydrolysis stage by releasing the internal organic matter of TWAS via its biocidal action. The effect of FNA on improving the biodegradability of TWAS was investigated in this thesis. The effect of the FNA on the TWAS characteristics and the methane production in batch tests was first studied. The optimum FNA dose was determined from the batch tests based on both solubilization and methane yields and then tested in a semi-continuous flow system. As the semi-continuous flow system failed when the optimum FNA dose obtained from the batch study was used, another set of semi-continuous flow experiments were conducted using different FNA doses

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