Pollutant Removal from Aqueous Solutions by Adsorptive Biomaterials

A special issue of Clean Technologies (ISSN 2571-8797).

Deadline for manuscript submissions: 30 September 2025 | Viewed by 1144

Special Issue Editors


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Guest Editor
Chemistry Department, Faculty of Petroleum Refining and Petrochemistry, Petroleum—Gas University of Ploiesti, 100680 Ploiesti, Romania
Interests: green chemistry; wastewater treatment; optimization of sorbents for water decontamination; carbon materials; biosorbents; organic dyes

E-Mail Website
Guest Editor
Chemistry Department, Faculty of Petroleum Refining and Petrochemistry, Petroleum—Gas University of Ploiesti, 100680 Ploiesti, Romania
Interests: nanomaterials; photocatalysis; organic dyes; water decontamination; carbon materials

Special Issue Information

Dear Colleagues,

We invite you to contribute an original research paper, review article, or hot topic to our Special Issue of Clean Technologies entitled “Pollutant Removal from Aqueous Solutions by Adsorptive Biomaterials”, for peer-review and possible publication. Worldwide, large volumes of household and industrial wastewater are produced each year, and inadequate wastewater treatment is currently regarded as one of the main factors causing the pollution of water resources.

Compared to other conventional methods of water depollution, adsorption has emerged as significant technology for removing harmful substances.

A variety of novel non-conventional adsorbents, either synthetic or natural, have been developed in recent years to remove environmental pollutants from water and wastewater via adsorption. Biomaterials aim to align with the concepts of the circular economy and green chemistry while being more ecologically benign, economically feasible, easy to use and regenerate. The list of bio-adsorbents is particularly vast, including, for example, plant biomass, cellulose-based materials, lignocellulosic agricultural waste, forestry and pulp industry waste, biochar composites, novel-structured carbon-based materials, chitosan-based nanocomposites, modified zeolites, and modified clays.

The objective of this Special Issue on “Pollutant Removal from Aqueous Solutions by Adsorptive Biomaterials” is to review the state of the art and disseminate the latest research results obtained in the domain of non-conventional adsorbents used to remove water pollutants.

We invite colleagues to contribute original research papers and critical reviews addressing recent progresses on all aspects regarding innovative bio-adsorbents for water decontamination.

Dr. Andreea Bondarev
Dr. Sonia Mihai
Guest Editors

Manuscript Submission Information

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Keywords

  • adsorptive biomaterials
  • adsorption mechanisms
  • organic matter
  • heavy metals
  • persistent organic pollutants
  • characterization methods

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Published Papers (1 paper)

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Research

24 pages, 9291 KiB  
Article
The Efficiency of Chlorella vulgaris in Heavy Metal Removal: A Comparative Study of Mono- and Multi-Component Metal Systems
by Eleni Kyratzopoulou, Nikoletta Kyzaki, Lamprini Malletzidou, Evangelos Nerantzis and Nikolaos A. Kazakis
Clean Technol. 2025, 7(2), 35; https://doi.org/10.3390/cleantechnol7020035 - 18 Apr 2025
Viewed by 984
Abstract
The occurrence of heavy metals in aquatic ecosystems is a serious environmental hazard, and their effective removal is imperative. In this regard, the feasibility of living microalga Chlorella vulgaris (C. vulgaris) to remove heavy metals (Ni, Pb, Zn, Cd, and Cu) [...] Read more.
The occurrence of heavy metals in aquatic ecosystems is a serious environmental hazard, and their effective removal is imperative. In this regard, the feasibility of living microalga Chlorella vulgaris (C. vulgaris) to remove heavy metals (Ni, Pb, Zn, Cd, and Cu) is investigated by using 1, 5, and 10 ppm concentrations of single- and multiple-metal-treated (MT) cultures. Experiments were performed in controlled laboratory conditions, and metal removal analysis was performed through atomic absorption spectroscopy (AAS). The cultures were also examined by means of optical microscopy, UV-Vis spectrophotometry, and Fourier transform infrared (FTIR) spectroscopy to follow the cultures’ pigment content, cell population, and functional group changes during cultivation. The removal efficiency results of both single and multiple MT cultures were evaluated using the Langmuir isotherm model. The results indicate that C. vulgaris presents potential for heavy metal bioremediation, even towards multi-MT conditions, despite the influence of a competitive uptake in multi-MT cultures. In mono-MT cultures, the removal efficiency of C. vulgaris presents values of 65–99% on Day 3 and 72–99% on Day 7 of cultivation, while the results for the multi-MT cultures are 49–99% and 62–99% for Days 3 and 7 of cultivation, respectively. The research illustrates the potential for C. vulgaris as a promising biosorbent for heavy metal remediation along with its post-treatment use in applications supporting the green circular economy. Full article
(This article belongs to the Special Issue Pollutant Removal from Aqueous Solutions by Adsorptive Biomaterials)
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