نتایج جستجو برای: sorption process

تعداد نتایج: 1321604  

Journal: :Journal of environmental management 2011
J M Lezcano F González A Ballester M L Blázquez J A Muñoz C García-Balboa

This work examines the sorption capacity of a natural biomass collected from an irrigation pond. The biomass mainly consisted of a mixture of chlorophyte algae with caducipholic plants. Biosorption experiments were performed in monometallic and bimetallic solutions containing different metals commonly found in industrial effluents (Cd, Cu and Pb). The biosorption process was slightly slower in ...

Journal: :Environmental science & technology 2011
Jia-Zhong Zhang Xiao-Lan Huang

Our previous studies on the phosphate sorption on sediments in Florida Bay at 25 °C in salinity 36 seawater revealed that the sorption capacity varies considerably within the bay but can be attributed to the content of sedimentary P and Fe. It is known that both temperature and salinity influence the sorption process and their natural variations are the greatest in estuaries. To provide useful ...

Hossein Faghihian Massoud Nejati-Yazdinejad

Amino acids have been extensively used in several processes of the pharmaceutical and food industries. Treatments for the recovery and reuse of the wastewaters generated from these processes are few and little known. This work aims at studying the influence of different variables on the sorption of L-cysteine, contained in aqueous solutions, on clinoptilolite mineral. L-Cysteine (Cys) was s...

Journal: :international journal of environmental research 2015
f. sharifipour s. hojati a. landi a. faz cano

a good understanding of adsorption equilibrium and thermodynamics is required to design and operate an adsorption process. this study was conducted to assess the adsorption percentage of pb2+ ions as a function of contact time, solution ph and temperatures, and adsorbent dosage through a series of batch experiments. the methods including zeta potentials, specific surface area measurements and t...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
hossein faghihian massoud nejati-yazdinejad

amino acids have been extensively used in several processes of the pharmaceutical and food industries. treatments for the recovery and reuse of the wastewaters generated from these processes are few and little known. this work aims at studying the influence of different variables on the sorption of l-cysteine, contained in aqueous solutions, on clinoptilolite mineral. l-cysteine (cys) was sorbe...

Journal: :Water research 2003
N K Lazaridis T D Karapantsios D Georgantas

The removal of a reactive color, Cibacron Yellow LS-R, from aqueous solutions by adsorption onto hydrotalcite particles is investigated using batch rate experiments. Measurements are performed at various initial color concentrations, solid loads, pH values and ionic backgrounds (dissolved NaCl). The speed of agitation and the temperature inside the batch adsorber are also varied within a practi...

2003
G. McKAY

In recent years many cheap, widely-available materials have been identi® ed as suitable adsorbents for the removal of colour from wastewaters. The sorption of various dyes on peat , onto pith and onto wood has been studied. However, only limited application of such data has been directed towards the design of adsorption treatment systems such as batch adsorber design8,9 or ® xed bed adsober des...

Journal: :Journal of environmental sciences 2011
Zequn Liu Xiaomin Yan Mary Drikas Danong Zhou Dongsheng Wang Min Yang Jiuhui Qu

The contamination of surface and ground water by bentazone has attracted increasing global concern in recent years. We conducted a detailed investigation using MIEX resin to eliminate bentazone from waters. Batch experiments were carried out to evaluate the effect of process parameters, such as retention time, resin amount, and initial pesticide concentration, on removal efficiency of bentazone...

2013
Behisht Ara Jasmin Shah Rasul Jan Sobia Aslam

Agricultural solid waste (corn cob) has been investigated asbiosorbent for removal of metribuzin herbicide from aqueous solution. Parameters influencing extraction efficiency such as pH of the sample, contact time of sample with biosorbent, shaking time, temperature, heating time, sorbent dose were studied. Maximum sorption of metribuzinwas found at pH 5.0. The sorption of metribuzin on corn co...

Journal: :Chemosphere 2001
J R Baker J R Mihelcic A Sabljic

Several recent studies have shown that n-octanol/water partition coefficients may not be a good predictor for estimating soil sorption coefficients of persistent organic pollutants (POPs), defined here as chemicals with log Kow greater than 5. Thus, an alternative QSAR model was developed that seems to provide reliable estimates for the soil sorption coefficients of persistent organic pollutant...

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