نتایج جستجو برای: freundlich model

تعداد نتایج: 2105418  

Journal: :international journal of environmental research 2011
a.b. soni a. keshav v. verma s. suresh

present study deals with the adsorption of glycolic acid (ga) from aqueous solutions by using bagasse fly ash (bfa). bfa is a solid waste generated from bagasse fired boilers and can be used as an adsorbent. batch adsorption studies were carried out to evaluate the effect of various parameters like adsorbent dose, contact time, initial concentration and temperature on the removal of ga from aq...

Imtiaz Ahmad Khalid Saeed, Mohammad Ishaq Sirraj Sultan Sohail Akhtar

The removal ofxylenol orange from aqueous solution onto the coal ash was investigated at room temperature. The results show that the adsorption capacity of xylenol orange increased as the adsorption time increased and then equilibrium established after 30 min adsorption time. The results obtained revealed that the coal ash removed about 80 % of xylenol orange from the aqueous solution withi...

2016
S. NIRMALA A. PASUPATHY M. RAJA

The objective of this work is to study the removal of methylene blue dye from aqueous solution using low cost adsorbent obtained from the leaves of Andrographis paniculata. Batch adsorption studies were carried out by observing the effects of various experimental parameters, such as dye concentration, contact time, adsorbent dose, effect of temperature and pH. The data were fitted into the Lang...

2012
MEHDI VADI

We have studied the interaction of Acetaminophen and Diclofenac solutions, on multi ncarbon nanotube. After investigated comparative study and assigned to either Acetaminophen or Diclofenac adsorption isotherms. The adsorption equilibrium isotherms were fitted by Freundlich, Langmuir, and Temkin models. It was found that the Temkin model described the adsorption process better than other two is...

2015
M. Santhi P. E. Kumar B. Muralidharan

This paper presents the feasibility of removal of basic dye malachite green from aqueous solutions by using a low cost AC-MnO2-NC. Batch adsorption experiments were carried out as a function of pH, contact time, initial concentration of the adsorbate, adsorbent dosage and temperature . Langmuir, Freundlich and Tempkin isotherms were also studied . Pseudo first order, Pseudo second order , intra...

Journal: :environmental health engineering and management 0
yusef omidi khaniabadi health care system of karoon, ahvaz jundishapur university of medical sciences, ahvaz, iran mohammad javad mohammadi abadan school of medical sciences, abadan, iran mojtaba shegerd health center of east, ahvaz jundishapur university of medical sciences, ahvaz, iran shahram sadeghi environmental health research center, kurdistan university of medical sciences, sanandaj, iran sedigheh saeedi sama technical and vocatinal college, islamic azad university, izeh branch, izah, iran hassan basiri department of environmental health engineering, school of health, lorestan university of medical sciences, lorestan, iran

background: synthetic dyes have several harmful effects on human health as well as aquatic life. in this study, activated carbon (av-ac), based on aloe vera leaf shells, was used as a novel agricultural adsorbent, one that is low-cost and available for the removal of congo red (cr) as a carcinogenic dye from aqueous solutions. methods: in the batch system, the influence of different parameters ...

2011
Nidá M. Salem Akl M. Awwad

ss as: Sa t bark. Abstract Biosorption of nickel ions from aqueous solutions by modified loquat bark waste (MLB) has been investigated in a batch biosorption process. The biosorbent MLB was characterized by FTIR analysis. The extent of biosorption of Ni(II) ions was found to be dependent on solution pH, initial nickel ions concentration, biosorbent dose, contact time, and temperature. The exper...

2010
Manjeet Bansal Diwan Singh V. K. Garg Pawan Rose

The potential of economically cheaper cellulose containing natural materials like rice husk was assessed for nickel adsorption from aqueous solutions. The effects of pH, contact time, sorbent dose, initial metal ion concentration and temperature on the uptake of nickel were studied in batch process. The removal of nickel was dependent on the physico-chemical characteristics of the adsorbent, ad...

2013
J. C. MORENO-PIRAJÁN L. GIRALDO

A monolithic carbon aerogel with a specific pore texture was used as benzene adsorbent. Adsorption was carried out under static conditions at 25 C and at saturation, an adsorption capacity as high as 0.77 cm.g or 837 mg.g was obtained. This work is devoted to the application of carbon aerogels for the removal of hydroquinone, catechol and resorcinol from aqueous solutions. These materials were ...

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