Removal of target odorous molecules on to activated carbon cloths

2004 ◽  
Vol 50 (4) ◽  
pp. 193-198 ◽  
Author(s):  
L.M. Le Leuch ◽  
A. Subrenat ◽  
P. Le Cloirec
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Surface Chemistry ◽  
Critical Thickness ◽  
Carbon Materials ◽  
Structural Parameters ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Odor Emissions ◽  
High Flows

Activated carbon materials are adsorbents whose physico-chemical properties are interesting for the treatment of odorous compounds like hydrogen sulfide. Indeed, their structural parameters (pore structure) and surface chemistry (presence of heteroatoms such as oxygen, hydrogen, nitrogen, sulfur, phosphorus) play an important role in H2S removal. The cloth texture of these adsorbents (activated carbon cloths) is particularly adapted for dealing with high flows, often found in the treatment of odor emissions. Thus, this paper first presents the influence of these parameters through adsorption isothermal curves performed on several materials. Secondly, tests in a dynamic system are described. They highlight the low critical thickness of the fabric compared to granular activated carbon.

scholarly journals The mutagenic and some physico-chemical properties of organic residues obtained from drinking water by Amberlite XAD-2 and activated carbon extraction.

Eisei kagaku ◽  
1988 ◽  
Vol 34 (5) ◽  
pp. 389-400 ◽  
Author(s):  
SUKEO ONODERA ◽  
KEIICHIRO YOSHIMATSU ◽  
SEIGO NAKANO ◽  
HISAYO SAITOH ◽  
SHIZUO SUZUKI
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Chemical Properties ◽  
Organic Residues ◽  
Physico Chemical

scholarly journals New Activated Carbon from Mine Coal for Adsorption of Dye in Simulated Water or Multiple Heavy Metals in Real Wastewater

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2498 ◽  
Author(s):  
Marwa Elkady ◽  
Hassan Shokry ◽  
Hesham Hamad
Keyword(s):  
Activated Carbon ◽  
Nitric Acid ◽  
Metal Ions ◽  
Low Cost ◽  
Dye Adsorption ◽  
Chemical Properties ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Physico Chemical ◽  
Multiple Heavy Metals

Nano-activated carbon (NAC) prepared from El-Maghara mine coal were modified with nitric acid solution. Their physico-chemical properties were investigated in terms of methylene blue (MB) adsorption, FTIR, and metal adsorption. Upon oxidation of the ACS with nitric acid, surface oxide groups were observed in the FTIR spectra by absorption peaks at 1750–1250 cm−1. The optimum processes parameters include HNO3/AC ratio (wt./wt.) of 20, oxidation time of 2 h, and the concentration of HNO3 of 10% reaching the maximum adsorption capacity of MB dye. Also, the prepared NAC was characterized by SEM, EDX, TEM, Raman Spectroscopy, and BET analyses. The batch adsorption of MB dye from solution was used for monitoring the behavior of the most proper produced NAC. Equilibrium isotherms of MB dye adsorption on NAC materials were acquired and the results discussed in relation to their surface chemistry. Langmuir model recorded the best interpretation of the dye adsorption data. Also, NAC was evaluated for simultaneous adsorption of six different metal ions (Fe2+, Ni2+, Mn2+, Pb2+, Cu2+, and Zn2+) that represented contaminates in petrochemical industrial wastewater. The results indicated that the extracted NAC from El-Maghara mine coal is considered as an efficient low-cost adsorbent material for remediation in both basic dyes and metal ions from the polluted solutions.

scholarly journals Application of lipophilicity parameters in QSRR analysis of newly synthesized s-triazine derivatives: Prediction of the retention behavior

2011 ◽  
Vol 65 (5) ◽  
pp. 533-540 ◽  
Author(s):  
Lidija Jevric ◽  
Bratislav Jovanovic ◽  
Sonja Velimirovic ◽  
Aleksandra Tepic ◽  
Gordana Koprivica ◽  
...  
Keyword(s):  
Partition Coefficients ◽  
Structural Parameters ◽  
Chemical Properties ◽  
Reversed Phase ◽  
Retention Behavior ◽  
Chemical Screening ◽  
Physico Chemical ◽  
Agricultural Chemistry ◽  
Triazine Derivatives ◽  
Coefficient Measurement

Considerable attention has been paid to the analysis of chemicals in the s-triazine group, due to their widespread use in agricultural chemistry and their subsequent impact on biological systems. For initial chemical screening of the activity of newly synthesized compounds, it is recommended to determine their lipophilicity and physico-chemical property in relation to biological activity. Lipophilicity is difficult to quantify. The most widely accepted measure of lipophilicity is the octanol-water partition coefficient. Measurement of the octanol-water partition coefficients is achieved by an alternative method, i.e. reversed-phase liquid chromatography. Reversed-phase thin-layer chromatography (RP TLC) is a rapid method for the analysis of large number of s-triazine type compounds. Certain relationship between the structure of s-triazine compounds and their mobility on silica gel impregnated with paraffin oil have recently been demonstrated. The retention behavior of compounds in various chromatographic systems strongly depends on their physico-chemical properties. Recently, much effort was given in finding adequate mathematical model relating the retention of the given analyte to its physico-chemical and structural parameters (descriptors). These correlations are known as quantitative structure-retention relationships (QSRR), which offer a powerful tool for the prediction of separation behavior. The QSRR equations describing retention constants RM0, determined for different modifiers in mobile phase in terms of logarithms of n-octanol-water partition coefficients, were derived. The partition coefficients (AlogPs, AClogP, AB/logP, milogP, AlogP, MlogP, logPKowin, XlogP2, XlogP3, ACDlogP i ClogP) were calculated by application of different software packages. The goal of this paper was to select the logP data and TLC system that best characterize octanol/water partitioning and thus the lipophilicity of the investigated molecules.

Date stone based activated carbon/graphite electrode for catechol analysis: physico-chemical properties and application in beverage samples

2018 ◽  
Vol 42 (16) ◽  
pp. 13285-13296 ◽  
Author(s):  
H. Hammani ◽  
F. Laghrib ◽  
A. Farahi ◽  
S. Lahrich ◽  
M. El Achaby ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Paste Electrode ◽  
Graphite Electrode ◽  
Chemical Properties ◽  
Physical Activation ◽  
Carbon Paste ◽  
Beverage Samples ◽  
Physico Chemical ◽  
Paste Electrode

The purpose of this paper is the modification of a carbon paste electrode (CPE) with activated carbon synthesized from date stones using a pyrolysis system followed by physical activation.

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