20kHz sonoelectrochemical degradation of perchloroethylene in sodium sulfate aqueous media: Influence of the operational variables in batch mode

As anionic surfactant, a commercial salt of lauryl sodium sulfate was used. The effects of different amounts of dispersant on the measurement of particle size distribution between two titanium dioxide powders (anatase and rutile) in aqueous media were discussed. Diluted aqueous suspensions were characterized in terms of particle size distribution and zeta potential. The results demonstrate that the measurement of particle size distribution strongly depends on the amounts of dispersant. The amounts of dispersant have a significant effect on the behavior of the rutile-TiO2 particles. The particle size first decreases significantly with an increase in the amounts of dispersant and then lesser increases with a further increase in the amounts of dispersant. The tendency show significant differences between two particles.

Download Full-text

Preparation of hybrid organic-inorganic mesoporous silicas applied to mercury removal from aqueous media: Influence of the synthesis route on adsorption capacity and efficiency

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2016.03.048 ◽

2016 ◽

Vol 472 ◽

pp. 126-134 ◽

Cited By ~ 14

Author(s):

Damián Pérez-Quintanilla ◽

Alfredo Sánchez ◽

Isabel Sierra

Keyword(s):

Adsorption Capacity ◽

Aqueous Media ◽

Mesoporous Silicas ◽

Mercury Removal ◽

Media Influence ◽

Synthesis Route

Download Full-text

Development of Cellulose Acetate Microcapsules with Cyanex 923 for Phenol Removal from Aqueous Media

Journal of Chemistry ◽

10.1155/2018/9506489 ◽

2018 ◽

Vol 2018 ◽

pp. 1-8

Author(s):

Irma Pérez-Silva ◽

Israel S. Ibarra ◽

A. Castañeda-Ovando ◽

C. A. Galán-Vidal ◽

Ma. Elena Páez-Hernández

Keyword(s):

Cellulose Acetate ◽

Aqueous Media ◽

Textile Wastewater ◽

Phenol Removal ◽

Batch Mode ◽

Promising Alternative ◽

Phenol Adsorption ◽

Phenol Extraction ◽

Cyanex 923 ◽

Removal Technologies

Microcapsules of cellulose acetate with Cyanex 923 were prepared and used in this study for phenol removal from water and synthetic textile wastewater. The influence of several factors on the microcapsules extraction efficiency was studied, as well as characterization and phenol adsorption isotherm. Microcapsules characterization demonstrated the extractant reagent encapsulation, while in a batch mode procedure, good adsorption of phenol (ca. 5.5 × 10−3 mol Kg−1) has been reached. A slight decrease in phenol extraction percentage was obtained when synthetic textile wastewater was used (ca. 4.955 × 10−3 mol Kg−1), although a decrease in color was observed due to dye microcapsule extraction. Results indicate that this method is a promising alternative to conventional phenol removal technologies for aqueous samples of low phenol concentrations or in textile effluents.

Download Full-text

Studies of operational variables in batch mode for genetically engineered Escherichia coli cells containing penicillin acylase

Enzyme and Microbial Technology ◽

10.1016/0141-0229(93)90057-9 ◽

1993 ◽

Vol 15 (12) ◽

pp. 1070-1073 ◽

Cited By ~ 11

Author(s):

S. Bhattacharya ◽

V.S. Gupta ◽

A.A. Prabhune ◽

H. SivaRaman ◽

M. Debnath ◽

...

Keyword(s):

Escherichia Coli ◽

Penicillin Acylase ◽

Genetically Engineered ◽

Batch Mode ◽

Escherichia Coli Cells ◽

Operational Variables ◽

Engineered Escherichia Coli

Download Full-text

Electrochemical degradation of trichloroacetic acid in aqueous media: influence of the electrode material

Environmental Technology ◽

10.1080/09593330.2012.696723 ◽

2013 ◽

Vol 34 (3) ◽

pp. 383-393 ◽

Cited By ~ 5

Author(s):

M. D. Esclapez ◽

M. I. Díez-García ◽

V. Sáez ◽

P. Bonete ◽

José González-García

Keyword(s):

Electrode Material ◽

Trichloroacetic Acid ◽

Aqueous Media ◽

Media Influence ◽

Electrochemical Degradation

Download Full-text

Removal of Acidic Dyes from Aqueous Media Using Citrullus Lanatus Peels: An Agrowaste-Based Adsorbent for Environmental Safety

Journal of Chemistry ◽

10.1155/2019/6704953 ◽

2019 ◽

Vol 2019 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Shoomaila Latif ◽

Rabia Rehman ◽

Muhammad Imran ◽

Shahid Iqbal ◽

Ayesha Kanwal ◽

...

Keyword(s):

Citrullus Lanatus ◽

Aqueous Media ◽

Sorption Isotherms ◽

Environmental Safety ◽

Agitation Speed ◽

Batch Mode ◽

Sorption Data ◽

Chemically Modified ◽

Bulk Scale ◽

Water Melon

In this work, removal of fluorescein and eosin dyes using common agrowaste, i.e., peels of water melon (Citrullus lanatus) (WMP), has been studied in the batch mode. The sorbent material (WMP) was characterized by using scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and elemental analysis. The sorbent was chemically modified by subjecting it to 0.1 N HNO3 and 0.1 N NaOH solutions. Different parameters such as sorbent dose, pH, temperature, and agitation speed were optimized to investigate the sorbent efficiency for fluorescein and eosin dyes. Among three forms (raw, base-treated, and acid-treated), the base-treated form exhibited higher removal efficiency, followed by acid-treated and then the raw form. Generally, range for the removal of fluorescein and eosin was found to be 48.06–88.08% and 48.47–79.31%, respectively. Mathematical modeling of sorption data by Langmuir and Freundlich sorption isotherms and thermodynamic investigations were carried out to check the suitability of these agrowaste materials on bulk scale. The promising results concluded that peel of water melon (common agrowaste) can be potentially utilized for the removal of toxins.

Download Full-text