Efficient removal of toxic bromothymol blue and methylene blue from wastewater by polyvinyl alcohol

Agarwal, Shilpi; Sadegh, Hamidreza; Monajjemi, Majid; Hamdy, Abdel Salam; Ali, Gomaa A. M.; Memar, Amir; Shahryari-ghoshekandi, Ramin; Tyagi, Inderjeet; Gupta, Vinod Kumar

doi:10.1016/j.molliq.2016.02.060

Cited by 169 publications

(54 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The adsorption isotherm models present of the amount of solute adsorbed per unit weight of adsorbent as a function of the equilibrium concentration in the bulk solution at constant temperature [52,[54][55][56]. There are many isotherm models such as: Langmuir and Freundlich, Temkin, Harkin-Jura and Dubinin-Radushkevich.…”

Section: Adsorption Isotherm Modelsmentioning

confidence: 99%

“…There are many isotherm models such as: Langmuir and Freundlich, Temkin, Harkin-Jura and Dubinin-Radushkevich. Among of them, Langmuir and Freundlich models are commonly used for the description of adsorption data [48,[55][56][57]. The Langmuir equation is expressed as [48,56]:…”

Section: Adsorption Isotherm Modelsmentioning

confidence: 99%

“…where k (mg g -1 ) and 1/n are the constant characteristics of the system [56,58]. An example of the linear relation of Freundlich and Langmuir isotherms is displayed in Fig.…”

Section: Adsorption Isotherm Modelsmentioning

confidence: 99%

See 2 more Smart Citations

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

et al. 2017

Self Cite

View full text Add to dashboard Cite

Nanomaterials have been extensively studied for heavy metal ions and dye removals from wastewater. This article reviews the role of nanomaterials as effective adsorbents for wastewater purification. In recent years, numerous novel nanomaterial adsorbents have been developed for enhancing the efficiency and adsorption capacities of removing contaminants from wastewater. The innovation, forthcoming development, and challenges of cost-effective and environmentally acceptable nanomaterials for water purification are discussed and reviewed in this article. This review concludes that nanomaterials have many unique morphological and structural properties that qualify them to be used as effective adsorbents to solve several environmental problems. Graphical Abstract& Hamidreza Sadegh

show abstract

Section: Adsorption Isotherm Modelsmentioning

confidence: 99%

Section: Adsorption Isotherm Modelsmentioning

confidence: 99%

See 1 more Smart Citation

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…This is because at higher concentrations, the ratio of the initial number of ammonium ions to the available surface area is high and, subsequently, the fractional adsorption becomes independent on the initial concentration. However, at high concentrations, the available sites for adsorption become wider and the adsorption of ions depends upon the concentration [23]. Adsorption is a physicochemical process that involves mass transfer of a solute from liquid phases to the adsorbent surface.…”

Section: Resultsmentioning

confidence: 99%

“…Integrating equation (1) and using boundary condition, t = 0 to t = t and q t = 0 to q t = q t , the next linear form will be obtained, known as a first order Lagergren's rate equation [23]:…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Ammonium Ions onto Multi-Walled Carbon Nanotubes

Sadegh¹,

Ali²,

Abbasi³

et al. 2017

Studia UBB Chemia

Self Cite

View full text Add to dashboard Cite

ABSTRACT. Multi-walled carbon nanotubes (MWCNTs) surfaces have been characterized by FTIR and SEM techniques. The adsorption performance of MWCNTs was investigated for the removal of ammonium ions from wastewater. The effect of contact time, temperature and initial ions concentration on the adsorption of ammonium ions by MWCNTs were studied and optimized. The results showed a high adsorption capacity of 129 mg/g according to Langmuir isotherm model and removal efficiency of 95%. In addition, the adsorption kinetic and equilibrium data were fitted to the pseudo-second-order model. The potential application of MWCNTs for adsorption of ammonium ions from wastewater was successfully accomplished using a batch adsorption technique.

show abstract

Protein–polymer interaction: Transfer loading at interfacial region of PES‐based membrane and BSA

Sadegh

Sahay

Soni

2019

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

The adsorption of proteins onto polymeric surfaces is encountered in many natural and industrial processes and is a prerequisite to their efficient identification, separation, and purification by methods such as chromatography, and filtration. Nevertheless, the exact nature of the adsorption mechanisms and interfacial interactions is not easy to identify for a given protein-polymer system. Here, we aim to document the adsorption mechanism of a protein-polymer system by investigating the adsorption as well as desorption phenomenon of a protein [bovine serum albumin (BSA)] from the polymeric surface [polyethersulfone (PES)]. The analyses performed to document the adsorption mechanism of the BSA-PES system include scanning electron microscope (SEM), attenuated total reflection-Fourier transform infrared (FTIR), contact angle, zeta potential, surface charge density measurement, and Derjaguin-Landau-Verwey-Overbeek (DLVO). Here, SEM and FTIR identified the physical and chemical properties of pure PES and PES-BSA membranes. The low water contact angle of the PES-BSA membrane confirms its applicability for tissue engineering applications. Further, the zeta potential, surface charge density measurement, and DLVO analyses were performed to document the adsorption mechanism. The adsorption of BSA particles on the PES surface was carried out for pH values that ranged from 4 to 10 for contact times that ranged from 1 to 3 days. A monotonic increase in the zeta potential of the PES-BSA system indicated considerable adsorption of BSA particles on the PES surface. Further, BSA adsorption was very strong for pH values greater than 4.7 which confirms to strong electrostatic interactions between BSA and PES. The strong electrostatic interaction is also collaborated by low desorption rate, which was only 22% for pH 10 after 3 days of contact.

show abstract

Efficient removal of toxic bromothymol blue and methylene blue from wastewater by polyvinyl alcohol

Cited by 169 publications

References 58 publications

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

Adsorption of Ammonium Ions onto Multi-Walled Carbon Nanotubes

Protein–polymer interaction: Transfer loading at interfacial region of PES‐based membrane and BSA

Contact Info

Product

Resources

About