Results 81 to 90 of about 339,684 (268)

Effect of surface functional group on Freundlich adsorption isotherm

Water Science and Technology, 2000
This study was designed to investigate the relationship between Freundlich isotherm coefficient l/n and the molecular properties of activated carbon adsorbent. The surface of the adsorbent was modified using nitric acid to produce different types and amounts of oxidized groups.
K.E. Noll, Y. Miura, E.G. Furuya, H.T. Chang   +3 more
openaire   +1 more source

Rhodamine B Adsorption Efficiency of Biochar Produced Through Co‐Pyrolysis of Municipal Sewage Sludge and Food Waste Mixture Under High‐Temperature Condition

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT With the large‐scale construction of wastewater treatment facilities, the production of municipal sewage sludge continues to rise. This sludge contains substantial amounts of toxic and hazardous substances, and improper disposal may lead to secondary environmental pollution.
He Li, Chang Jiang, Rajendra Prasad Singh, Peiyao Xu, Yizhuo Wang, Haokun Gong   +5 more
wiley   +1 more source

Characterization of natural Yemeni zeolites as powder sorbents for ammonium valorization from domestic waste water streams using high rate activated sludge processes [PDF]

, 2018
BACKGROUND In this study three natural Yemeni zeolites (NZ1, NZ2 and NZ3) having major minerals such as clinoptilolite and mordenite, were evaluated as low cost sorbents for the removal and recovery of ammonium ions.
Alouani, Rabeh, Cortina Pallás, José Luís, Hadj Amara, Abdesslem Ben, Hermassi, Mehrez, Jmayai, Amel   +4 more
core   +2 more sources

Isotherms, kinetics and thermodynamic mechanism of methylene blue dye adsorption on synthesized activated carbon

Scientific Reports
The treatment of methylene blue (MB) dye wastewater through the adsorption process has been a subject of extensive research. However, a comprehensive understanding of the thermodynamic aspects of dye solution adsorption is lacking.
Atef El Jery, H. Alawamleh, Mustafa Humam Sami, Hussein Abdullah Abbas, S. S. Sammen, Amimul Ahsan, M. Imteaz, Abdallah Shanableh, M. Shafiquzzaman, Haitham Osman, Nadhir Al-Ansari   +10 more
semanticscholar   +1 more source

Eggshell‐Based Biochar for Superior Adsorption of Crystal Violet Dye and Fluoride From Wastewater

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Present study investigates the efficiency of eggshell biochar as a low‐cost and ecofriendly adsorbent for the simultaneous removal of fluoride ions and crystal violet (CV) dye from wastewater. The eggshell waste was pyrolyzed to produce biochar, which was thoroughly characterized and subsequently employed for contaminant adsorption.
T. Mounika, A. Vijaya Bhaskar Reddy, V. Madhavi, K. V. Santhee Devi   +3 more
wiley   +1 more source

Sorption study of organic contaminant on raw and modified clay materials

MATEC Web of Conferences, 2013
The adsorption of volatile organic compound VOC (o-xylene) was studied by a static headspace coupled to gas chromatography in natural and intercalated clay. Vapor–solid adsorption isotherms of o-xylene were measured at 20 °C, 30 °C and 40 °C.
Dammak N., Fakhfakh N., Fourmentin S., Benzina M.   +3 more
doaj   +1 more source

Dyeing and Adsorption Studies of Madder (Rubia tinctorum) on Wool Fibers

Medžiagotyra, 2015
In this study, the dyeing behavior of wool fabrics with madder has been studied. Three well-known types of adsorption isotherms i.e. the Nernst, Freundlich and Langmuir isotherms were used to fit the data.
Mahmoud FEIZ, Hossein Norouzi
doaj   +1 more source

Adsorption Desulfurization of Liquid Fuel Using a Blend of Date Stones and Walnut Shells by Box–Behnken Design

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT A specific microporous KOH/activated‐biochar (K/BC) was produced from a blend of date stones (DS) and walnut shells (WS) and used in the adsorptive desulfurization (ADS) of two types of model fuel DBT/n‐hexane (S‐hex), DBT/cyclohexane (S‐cyclohex).
Ameen L. Alyawer, Marwa H. Altamer, Ahmed M. Khalaf, Amena F. Al‐Omari, Abdelrahman B. Fadhil   +4 more
wiley   +1 more source

Análise das isotermas de adsorção de Cu(II), Cd(II), Ni(II) e Zn(II) pela N-(3,4-dihidroxibenzil) quitosana empregando o método da regressão não linear

Química Nova, 1998
Adsorption of Cu(II), Ni(II), Pb(II) and Zn(II) ions from aqueous solutions by N-(3,4-dihydroxybenzyl) chitosan have been carried out. The Langmuir (L), Freundlich (F), Langmuir - Freundlich (LF), Redlich-Peterson (RP) and Tóth (T) adsorption isotherms ...
Klug Marilene, Sanches Maria N. M., Laranjeira Mauro C. M., Fávere Valfredo T., Rodrigues Clovis A.   +4 more
doaj  

Removal of Methylene Blue and Congo Red Dyes Using Sustainable and Eco‐Friendly Bioadsorbents: A Review

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The continuous increasing discharge of synthetic dyes into aquatic systems seems to be an important environmental and health risk due to their high toxicity and resistance to biodegradation. Among these dyes, methylene blue (MB) and Congo red (CR) are widely used in textile and industrial applications, necessitating sustainable and efficient ...
Avanish Kumar, Ashish Kapoor, Dan Bahadur Pal   +2 more
wiley   +1 more source