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Wastewater Treatment: Membranes and Adsorptive Processes

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: closed (20 December 2021) | Viewed by 3036

Special Issue Editor


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Guest Editor
Chemical Process Engineering and Forest Products Research Centre, University of Coimbra, Coimbra, Portugal
Interests: adsorption; ion-exchange; membrane technology; wastewater treatment; seawater desalination; CO2 sequestration
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Significant amounts of wastewater have been produced by domestic, industrial, and agricultural sectors driven mainly by the growth of population and industrialization. There are thousands of inorganic, organic, and biological pollutants considered to be contaminants in wastewater and many of them can have serious effects on human health and the environment. Many conventional and non-conventional technologies have been employed to treat different types of wastewater in order to meet the legal requirements for discharge or reuse. The transition to a circular economy requires the use of innovative technologies to treat wastewater streams, minimizing generation of sludge and recovering valuable products. Membrane and adsorptive processes have proven to be promising options to removal of contaminants and/or recover valuable compounds present in wastewaters.

This Special Issue aims to gather high quality research papers and review papers that emphasize the significant importance of separation processes based on adsorption/ion-exchange and membrane technologies in wastewater treatment. It is intended to cover the synthesis of novel adsorbents and membranes, understanding of the mass transport mechanisms, treatment strategies, modeling and simulation studies, design and evaluation of |techno-economic feasibility. Potential topics include, but are not limited to:

  • New adsorbents and materials for membrane synthesis for water and wastewater treatment
  • Recovery of valuable metals by adsorption and ion-exchange
  • Adsorption of organic pollutants
  • Integration of membrane processes to recover high-added value compounds from agro-industrial wastewaters
  • Membrane processes for wastewater reuse
  • Membrane bioreactors technology

Prof. Dr. Licínio M. Gando-Ferreira
Guest Editor

Manuscript Submission Information

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Keywords

  • wastewater
  • adsorption
  • ion-exchange
  • adsorbents functionalized
  • membrane technology
  • mixed matrix membranes
  • modeling and simulation
  • design

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Published Papers (1 paper)

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Research

16 pages, 34527 KiB  
Article
Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution
by Inga Zinicovscaia, Nikita Yushin, Doina Humelnicu, Dmitrii Grozdov, Maria Ignat, Stefan Demcak and Ionel Humelnicu
Water 2021, 13(22), 3263; https://doi.org/10.3390/w13223263 - 17 Nov 2021
Cited by 9 | Viewed by 2410
Abstract
The adsorption capacity of two sorbents, silica SBA-15 and titanosilicate ETS-10, toward Ce(III) was tested. The obtained sorbents were characterized using X-ray diffraction, nitrogen adsorption-desorption, Scanning electron microscopy, and Fourier-transform infrared spectroscopy. The effects of solution acidity, cerium concentration, time of contact, and [...] Read more.
The adsorption capacity of two sorbents, silica SBA-15 and titanosilicate ETS-10, toward Ce(III) was tested. The obtained sorbents were characterized using X-ray diffraction, nitrogen adsorption-desorption, Scanning electron microscopy, and Fourier-transform infrared spectroscopy. The effects of solution acidity, cerium concentration, time of contact, and temperature on Ce(III) sorption were investigated. The maximum Ce(III) removal by silica SBA-15 was achieved at pH 3.0 and by titanosilicate ETS-10 at a pH range of 4.0–5.0. The Freundlich, Langmuir, and Temkin isotherm models were applied for the description of equilibrium sorption of Ce(III) by the studied absorbents. Langmuir model obeys the experimentally obtained data for both sorbents with a maximum sorption capacity of 68 and 162 mg/g for silica SBA-15 and titanosilicate ETS-10, respectively. The kinetics of the sorption were described using pseudo-first- and pseudo-second-order kinetics, Elovich, and Weber–Morris intraparticle diffusion models. The adsorption data fit accurately to pseudo-first- and pseudo-second-order kinetic models. Thermodynamic data revealed that the adsorption process was spontaneous and exothermic. Full article
(This article belongs to the Special Issue Wastewater Treatment: Membranes and Adsorptive Processes)
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