Strategies for Selection of Test Compounds in Structure-Affinity Modelling of Active Carbon Adsorption Performance: A Multivariate Approach

2000 ◽  
pp. 293-294
Author(s):  
L.-G. Hammarström ◽  
I. Fängmark ◽  
P. G. Jönsson ◽  
P. R. Norman ◽  
A. L. Ness ◽  
...  
Keyword(s):  
Active Carbon ◽  
Multivariate Approach ◽  
Adsorption Performance ◽  
Carbon Adsorption ◽  
Selection Of

scholarly journals Differential evolution-based optimization of corn stalks black liquor decolorization using active carbon and TiO2/UV

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mircea Teodor Nechita ◽  
Gabriel Dan Suditu ◽  
Adrian Cătălin Puițel ◽  
Elena Niculina Drăgoi
Keyword(s):  
Differential Evolution ◽  
Process Parameters ◽  
Active Carbon ◽  
Contact Time ◽  
Path Length ◽  
Irradiation Time ◽  
Black Liquor ◽  
Process Efficiency ◽  
Carbon Adsorption ◽  
Rsm Optimization

AbstractIn this work, the active carbon adsorption and TiO2/UV decolorization of black liquor were studied through experimental analysis (planned using Design of Experiments), modelling and optimization (with Response Surface Method and Differential Evolution). The aim is to highlight the importance of optimization methods for increasing process efficiency. For active carbon adsorption, the considered process parameters were: quantity of active carbon, dilution, and contact time. For TiO2 promoted photochemical decolorization the process parameters were: TiO2 concentration, UV path length and irradiation time. The determined models had an R squared of 93.82% for active carbon adsorption and of 92.82% for TiO2/UV decolorization. The optimization of active carbon resulted in an improvement from 83.08% (corresponding to 50 g/L quantity of active carbon, 30 min contact time and 200 dilution) to 100% (corresponding to multiple combinations). The optimization of TiO2/UV decolorization indicated an increase of efficiency from 36.63% (corresponding to 1 g/L TiO2 concentration, 60 min irradiation time and 5 cm UV path length) to 46.83% (corresponding to 0.4 g/L TiO2 concentration, 59.99 min irradiation time and 2.85 cm UV path length). These results show that the experiments and the subsequent standard RSM optimization can be further improved, leading to better performance.

A MULTIVARIATE APPROACH FOR THE SELECTION OF CULTIVARS WITH ANTAGONISTIC TRAITS

1983 ◽  
Vol 63 (4) ◽  
pp. 861-870
Author(s):  
K. B. McRAE ◽  
R. P. WHITE
Keyword(s):  
Performance Index ◽  
Multivariate Approach ◽  
Plant Breeder ◽  
Corn Hybrids ◽  
Evaluation Committee ◽  
Selection Of

The process of selecting cultivars is discussed from the viewpoints of both plant breeder and crop evaluation committee. Although there are differences in emphasis, both are faced with difficulties in selecting quantitatively on antagonistic traits. A general unweighted multivariate procedure is outlined, including suggestions for adaption to particular circumstances. An example is given of the proposed multivariate performance index for identifying superior performing corn hybrids.Key words: Antagonistic traits, multivariate selection, corn hybrids

Test Study on Combined Process of Clarification-Adsorption-Membrane Separation for Chemical Agent VX Polluted Surface Water Treatment

2013 ◽  
Vol 750-752 ◽  
pp. 1457-1460
Author(s):  
Xiao Jie Wang ◽  
Hong Wei Zhang ◽  
En Feng Chen ◽  
Yun Zhe Ji
Keyword(s):  
Activated Carbon ◽  
Surface Water ◽  
Membrane Separation ◽  
Chemical Agent ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Surface Water Treatment ◽  
Adsorption Performance ◽  
Carbon Adsorption ◽  
Test Study

t developed test devices and carried out test adopting combined process ofclarification-adsorption-membrane separationtargeted at surface water which was polluted by chemical agent VX. Investigation on purification effects of sand filtration, microfiltration, ultrafiltration, activated carbon adsorption and reverse osmosis was implemented in sections. It also researched on working principles of each section. Furthermore, comparative study has been made for adsorption performance of coaly granular activated carbon and that of shell activated carbon. The results show that the combined process can remove effectively simulation agent in water and the outlet quality complies with requirements of relevant standards.

Influence of oxygen-containing functional groups on active carbon adsorption of selected organic compounds

2002 ◽  
Vol 79 (3) ◽  
pp. 265-271 ◽  
Author(s):  
C.O Ania ◽  
J.B Parra ◽  
J.J Pis
Keyword(s):  
Functional Groups ◽  
Organic Compounds ◽  
Active Carbon ◽  
Carbon Adsorption

scholarly journals Corrigendum: Surma M., T. Adamski, Z. Kaczmarek, W. Święcicki, S. Mejza, P. Barzyk, A. Kuczyńska, K. Krystkowiak, K. Mikołajaczak, P. Ogrodowicz (2017): A multivariate approach to the selection of pea (Pisum sativum L.) lines obtained by the single seed descent technique.- Genetika, vol 49, no.1., 365-376. https://doi.org/10.2298/GENSR1701365S

Genetika ◽  
2017 ◽  
Vol 49 (3) ◽  
pp. 1127-1127
Author(s):  
E Editorial
Keyword(s):  
Pisum Sativum ◽  
Life Sciences ◽  
Scientific Paper ◽  
Multivariate Approach ◽  
Single Seed Descent ◽  
Single Seed ◽  
Pisum Sativum L ◽  
Academy Of Sciences ◽  
Font Color ◽  
Selection Of

The authors of the above-referenced article have requested a corrigendum to it. The article should include the following correction in name of author: insteed Krzysztof MIKO?AJACZAK correct name is Krzysztof MIKO?AJCZAK. UDC 575.630 https://doi.org/10.2298/GENSR1701365S Original scientific paper A MULTIVARIATE APPROACH TO THE SELECTION OF PEA (Pisum sativum L.) LINES OBTAINED BY THE SINGLE SEED DESCENT TECHNIQUE Maria SURMA1, Tadeusz ADAMSKI1, Zygmunt KACZMAREK1, Wojciech ?WI?CICKI1,2, Stanis?aw MEJZA3, Pawe? BARZYK2, Anetta KUCZY?SKA1, Karolina KRYSTKOWIAK1, Krzysztof MIKO?AJCZAK 1, Piotr OGRODOWICZ1 1 Institute of Plant Genetics of the Polish Academy of Sciences Pozna?, Poland 2 Pozna? Plant Breeding Ltd., Tulce, Poland 3 Pozna? University of Life Sciences, Pozna?, Poland Surma M., T. Adamski, Z. Kaczmarek, W. ?wi?cicki, S. Mejza, P. Barzyk, A. Kuczy?ska, K. Krystkowiak, K. Miko?ajczak, P. Ogrodowicz (2017): A multivariate approach to the selection of pea (Pisum sativum L.) lines obtained by the single seed descent technique.- Genetika, Vol 49, No.1., 365-376. <br><br><font color="red"><b> Link to the corrected article <u><a href="http://dx.doi.org/10.2298/GENSR1701365S">10.2298/GENSR1701365S</a></b></u>

Study on the Adsorption Effect of Active Carbon of Various Compozitions in Polytetrahydrofuran Waste Water

2013 ◽  
Vol 663 ◽  
pp. 894-898
Author(s):  
Xiao Na Ji ◽  
Sheng Shu Ai ◽  
Yan Zuo ◽  
Qing Kai Ren ◽  
De Jun Bian
Keyword(s):  
Waste Water ◽  
Active Carbon ◽  
Array Detector ◽  
Diode Array Detector ◽  
Adsorption Effect ◽  
Column Temperature ◽  
Chromatography Analysis ◽  
Carbon Adsorption ◽  
Stirring Time ◽  
Absorption Condition

This paper prensents the chromatography analysis condition study on the main poluted compozotion(furaldehyde and furfuran) in polytetrahydrofuran waste water with HPLC-DAD. Given the chromatography condition is that ODS is the stationary phase, the mix liquid in which methenyl:water = 75:25 is the mobile phase, the flow is 1.00 mL•min-1, using diode array detector(detect wavelength when furaldehyde is 274 nm and furfuran in 208nm), the injection volume is 2.0µL, the column temperature is 25.0°C. This paper presents the study of treatment of polytetrahydrofuran waste water by active carbon adsorption, investigates the three conditions of the amount of active carbon, stirring time and absorption temprature, and confirms that the best absorption condition is that the amount of active carbon is 3.0g, stirring for 30min and room temprature 20°C.

Quantitative Structure—Activity Relationships (QSARs): An Integrated Multivariate Approach for Risk Assessment Studies

1990 ◽  
Vol 9 (6) ◽  
pp. 629-638 ◽  
Author(s):  
Maria Livia Tosato ◽  
Claudio Chiorboli ◽  
Lennart Eriksson ◽  
Jorgen Jonsson ◽  
Silvia Marchini ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Biological Activities ◽  
Toxic Substances ◽  
Multivariate Approach ◽  
Qsar Study ◽  
Screening Assessment ◽  
Efficient Screening ◽  
Selection Of

The conditions and methods for constructing reliable QSARs are revised in relation to each component of a QSAR study: the selection of a training set out of a QSAR compatible series, the collection of data pertinent to the descriptors matrix (X) and to the effects matrix (Y), the analysis of data to connect X to Y by a regression model, and the validation of the model. In discussing these conditions, attention is given to the constraints that arise from the theoretical foundation of QSARs as analogy models of local validity and to the complexity and limited knowledge about the mechanisms of action. Hence, emphasis is placed on the need and importance to adopt multivariate methods for dealing with (1) the characterization of the structures, (2) the selection of a representative set of training compounds, and (3) analysis of the data. It is finally shown that the same integrated multivariate approach applies to the modeling of biological activities and other properties—chemical and biological—as well as to the modeling of correlations between batteries of data. The role of QSAR in risk assessment is addressed in the second part of the article. The framework of a strategy for an efficient screening assessment of toxic substances through the modeling of their exposure and toxicity-related properties is outlined. Applications of the strategy are reported that deal with two series of compounds. Examples of toxicity and persistency models are illustrated.

Treatment of 2,4-Dichlorophenol by Solar Photocatalysis: Comparison of Coupled Photocatalytic-Active Carbon vs. Active Carbon

2000 ◽  
Vol 123 (2) ◽  
pp. 138-142 ◽  
Author(s):  
Sixto Malato ◽  
Julia´n Blanco ◽  
Pilar Ferna´ndez-Iba´n˜ez ◽  
Julia Ca´ceres
Keyword(s):  
Organic Carbon ◽  
Solar Radiation ◽  
Total Organic Carbon ◽  
Active Carbon ◽  
Pilot Plant ◽  
Photocatalytic Oxidation ◽  
Practical Application ◽  
Carbon Adsorption ◽  
Pilot Plant Scale ◽  
Slow Kinetic

The photocatalytic oxidation of 2,4-Dichlorophenol (DCP), using TiO2 suspensions under solar radiation, has been studied at pilot-plant scale at the Plataforma Solar de Almerı´a (PSA). This compound is used as a model to demonstrate the practical application of the treatment. Total Organic Carbon (TOC) analysis is applied to confirm the total mineralization of the contaminants. The pilot plant has a volume of 247 L and consists of 9 m2 of CPC modules (with transparent tubes) connected to a recirculation tank. DCP at 20, 50 and 200 mg/L is completely photodegraded in the presence of 200 mg/L of TiO2, but mineralization is slow when organics concentration is small. The results obtained from these experiments have been used to decide the dimensions of a solar photocatalytic plant for treating wastewater contaminated with different concentration of DCP. Due to the slow kinetic obtained in the photodegradation last steps, a combination with GAC treatment is proposed. Besides, this article attempts to compare the advantages, disadvantages and costs of photocatalytic treatment, versus other more conventional technologies such as active carbon adsorption.

Research on Active Carbon Adsorption for the Amoxicillin Wastewater

2013 ◽  
Vol 295-298 ◽  
pp. 1235-1239 ◽  
Author(s):  
Quan Li Feng ◽  
Xue Qian Wang ◽  
Yu Jia ◽  
Ping Ning
Keyword(s):  
Activated Carbon ◽  
Active Carbon ◽  
Ph Value ◽  
Water Concentration ◽  
Cod Removal ◽  
Feed Water ◽  
Wastewater Discharge ◽  
Removal Rates ◽  
Adsorption Time ◽  
Carbon Adsorption

The experiment has study on the COD removal influence of the amoxicillin production wastewater of the feed water concentration, pH value, Activated carbon types, Adsorption time and active carbon dosage. The results show that 5g activated carbon mixed with 50ml of the wastewater that diluted 15 times, the pH value is 6, and adsorption for 60 min, the COD removal rates is up to 95.61% and the effluent COD value is 62.14 mg/L. It is far lower than the current the wastewater discharge standards in our country.

Sign in / Sign up

Export Citation Format

Share Document