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Removal of Priority Contaminants by Using Sludge Based-Carbon Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 3515

Special Issue Editors


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Guest Editor
Grupo de Catálisis y Procesos de Separación-CyPS, Dept Ingeniería Química y de Materiales, Facultad de Ciencias Químicas, Complutense University, Avda Complutense S-N, E-28040 Madrid, Spain
Interests: adsorption processes; heterogeneous catalysis; modelling; nanostructured carbon materials
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E-Mail Website
Guest Editor
Catalysis and Separation Processes Group (CyPS), Department of Chemical and Materials Engineering, Complutense University of Madrid, 28040 Madrid, Spain
Interests: adsorption processes; catalytic wet air oxidation; synthesis and characterization of carbon materials; wastewater treatments; 3-D printing of carbon materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Urban and industrial wastewater treatment plants (WWTPs) produce a huge quantity of sludge, a concentrated solid or semi-solid residue of heterogeneous character. The production quantity of sludge has been vastly increasing with the development of industrialization and urbanization and is currently considered as an ecological burden. Usually, sludge output control is accomplished by reducing sludge production during the wastewater treatment stage through agricultural usage, landfilling, or even incineration, causing secondary pollution problems. Nowadays, due to increasingly strict legislation, it is necessary to find sustainable solutions in order to manage this waste at low-cost conditions. Thus, the transformation of sludge into carbon materials to obtain efficient and sustainable carbon-based adsorbents and catalytic supports is a challenge that holds great promise. This Special Issue is focused on the synthesis of different sludge-based carbon materials for the removal of different emerging and priority contaminants from wastewater by physical and advanced oxidation treatments, such as adsorption, catalytic wet air oxidation (CWPO), catalytic wet peroxide oxidation (CWPO), heterogeneous Fenton processes, and photocatalysis, among others. Original research papers, reviews, and short reviews are invited for submission.

Prof. Dr. Silvia Álvarez-Torrellas
Prof. Dr. Juan García Rodríguez
Guest Editors

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Keywords

  • Adsorption
  • Advanced catalytic oxidation processes
  • Emerging and priority micropollutants
  • Sludge-based carbon materials
  • Wastewater.

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Published Papers (1 paper)

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Research

15 pages, 1223 KiB  
Article
Application of Sludge-Based Activated Carbons for the Effective Adsorption of Neonicotinoid Pesticides
by Eva Sanz-Santos, Silvia Álvarez-Torrellas, Lucía Ceballos, Marcos Larriba, V. Ismael Águeda and Juan García
Appl. Sci. 2021, 11(7), 3087; https://doi.org/10.3390/app11073087 - 30 Mar 2021
Cited by 21 | Viewed by 2874
Abstract
The amount of sludge produced in wastewater treatment plants (WWTPs) has increased over the years, and the methods used to reduce this waste, such as incineration, agricultural use, or disposal in landfills, cause problems of secondary pollution. For this reason, it is necessary [...] Read more.
The amount of sludge produced in wastewater treatment plants (WWTPs) has increased over the years, and the methods used to reduce this waste, such as incineration, agricultural use, or disposal in landfills, cause problems of secondary pollution. For this reason, it is necessary to find sustainable and low-cost solutions to manage this waste. Additionally, emerging and priority pollutants are attracting attention from the scientific community as they can generate health problems due to inadequate removal in conventional WWTPs. In this work, a pharmaceutical industry sludge was used as a precursor in the synthesis of four activated carbons (ACs) using different activating agents (ZnCl2, FeCl3∙6H2O, Fe(NO3)3∙9H2O, and Fe(SO4)3∙H2O), to be used for the removal by adsorption of three neonicotinoid pesticides included in latest EU Watch List (Decision 2018/840): acetamiprid (ACT), thiamethoxam (THM), and imidacloprid (IMD). The prepared ACs showed micro–mesoporous properties, obtaining relatively slow adsorption kinetics to reach equilibrium, but despite this, high values of adsorption capacity (qe) were obtained. For example, for AC-ZnCl2 (SBET = 558 m2/g), high adsorption capacities of qe = 128.9, 126.8, and 166.1 mg/g for ACT, THM, and IMD, respectively, were found. In most cases, the adsorption isotherms showed a multilayer profile, indicating an important contribution of the mesoporosity of the activated carbons in the adsorption process. Full article
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