Advanced Remediation Technologies Research Articles

Sustainable polymeric adsorbents for adsorption-based water remediation and pathogen deactivation: a review.

Water is a fundamental resource, yet various contaminants increasingly threaten its quality, necessitating effective remediation strategies. Sustainable polymeric adsorbents have emerged as promising materials in adsorption-based water remediation technologies, particularly for the removal of contaminants and deactivation of water-borne pathogens. Pathogenetic water contamination, which involves the presence of harmful bacteria, viruses, and other microorganisms, poses a significant threat to public health. This review aims to analyze the unique properties of various polymeric materials, including porous aromatic frameworks, biopolymers, and molecularly imprinted polymers, and their effectiveness in water remediation applications. Key findings reveal that these adsorbents demonstrate high surface areas, tunable surface chemistries, and mechanical stability, which enhance their performance in removing contaminants such as heavy metals, organic pollutants, and emerging contaminants from water sources. Furthermore, the review identifies gaps in current research and suggests future directions, including developing multifunctional polymeric materials and integrating adsorption techniques with advanced remediation technologies. This comprehensive analysis aims to contribute to advancing next-generation water purification technologies, ensuring access to clean and safe water for future generations.

Technologies for Environmental Ecological Restoration and Agricultural Sustainability Are the Focus of Future Safeguarded Agriculture Development

Global agricultural production is facing unprecedented challenges as the environment becomes increasingly polluted. Governments, scientists, companies and farmers are beginning to focus on appropriate environmental remediation and sustainable agricultural technologies and practices. Innovative environmental adaptation/remediation technologies have been developed and validated, including physical/chemical remediation, green sorbents and bioremediation. The development of environmental remediation technologies has provided additional tools and methods for global agri-environment and food security. The aim of this Special Issue is to bring together 21 cutting-edge research papers covering the latest developments in soil conditions, inorganic pollution, organic pollution, remediation technologies and monitoring methods. The four themes of the Special Issue are “Improvement of agricultural soil properties”, “Remediation of potentially toxic element pollution”, “Remediation of organic pollution” and “Ecosystem and crop assessment”. Based on the results of this Special Issue, we find that combining the latest environmental pollution problems with advanced remediation technologies, continuously promoting technological innovation and policy support, and developing integrated new technologies for environmental protection will be future areas of research for sustainable agro-environmental development.

Green and facile synthesis of novel nanocomposites: Insights of interfacial studies in the removal of diclofenac sodium and Rhodamine B

The persistent water contaminants, especially the diclofenac sodium and Rhodamine B, severely concern human and marine life. Advanced and indigenous materials received greater attention in advanced remediation technologies. The study aims to synthesize a novel mesoporous nanocomposite (MSoGO@Bn) material using a facile and greener approach using Saccharum officinarum as a precursor of graphene oxide. Further, the bentonite-supported magnetite graphene oxide nanocomposite is utilized for efficiently remedying an aqueous solution contaminated with diclofenac sodium (DCF) and Rhodamine B (RhB). Advanced analytical techniques adequately characterize the nanocomposite material. The parametric studies viz pH, sorptive concentration, adsorption isotherm, and kinetics are extensively conducted and pointed the efficiency of MSoGO@Bn towards the DCF and RhB removal with the adsorption capacity of 55.02 and 12.68 mg/g, respectively. The organophilic interaction with π-π interaction bounds the DCF and RhB at the solid surface of MSoGO@Bn. Recovery and reusability revealed the stability of solid MSoGO@Bn. Additionally, the real matrix implication of solids indicated the more excellent selectivity of solids in removing these pollutants in the aqueous medium.

PFAS Characteristics and Treatment for Landfill Leachate

Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are manmade chemicals which has been extensively used, resulting in great potential for human and environmental accumulation due to high persistence. PFASs can be divided to two parts, terminal and precursor compounds, based on how many fluorine atoms link to the carbon bonds. Many studies have examined the removal ability of method including activated carbon (AC), Foam fractionation (FF), chemical oxidation and boron-doped diamond anodes (BBD). This paper focus on introducing advanced remedial technology for PFAS treatment from landfill leachate. The details about PFASs are introduced, including the chemical structure, source, and properties. Then, different types of PFASs from landfill leachate are demonstrated. Some of PFAS, especially short-chain, are prone to stay as liquid phase. Activated carbon, a great model of adsorption, shows excellent performance on removal of PFOS and PFOA. In addition, boron-doped diamond anodes technique which belongs to the electrochemical anodic oxidation, have a great potential on landfill leachate in the future. Last but not least, the conclusion makes a summary and shows possible treatment to landfill in the future.

A review on remediation technologies using functionalized Cyclodextrin.

Modern lifestyle and alleviated anthropogenic activities have increased the pollutant load, ultimately causing stress on the environment. In industrialization, many harmful compounds are released into the environment polluting air, water, and soil, triggering adverse impacts on the ecosystem and human beings. Therefore, the development of advanced remediation technologies turns out as a significant environmental priority. Less polar cyclic oligosaccharide Cyclodextrin (CD) with cavity binding organic compounds attracted attention by helping effectively as environmental application. The formation of inclusion complexes and modified Cyclodextrin by cross-linking or surface modification enhances their capacity to abate pollutant effectively from the environment. Modification results in the formation of several novel materials such as CD-based composites, nanocomposites, crosslinked polymer or hydrogels, potent cross-linkers, CD-based membranes, and CD immobilized supports. Several environmental remediation technologies based on Cyclodextrin and modified Cyclodextrin have been discussed in detail in this review. Various environmental applications of Cyclodextrin and its derivatives have been discussed, along with their formation, properties, and characterization. Effective removal of organic pollutants, inorganic pollutants, micropollutants, volatile compounds etc., has been explained using several remediation technologies. Based on CD innocuity, this is referred to as the green process. The reversible equilibrium corresponded by the inclusion phenomenon sets a significant trend in the field of CD environmental application to develop techniques by incorporating supramolecular chemistry as well as irreversible methods such as biodegradation and advanced oxidation. It helps in the complete removal of pollutants and ultimately recycling the CD.

The Potential Application of Giant Reed (Arundo donax) in Ecological Remediation

Giant reed is known as one of the most important energy plants as a consequence of its huge dry biomass production. It can be used for bioenergy or biopolymer production. Thus, it can replace maize and reduce the production cost of biomass and electricity. Giant reed and its products have different uses in industry. The use of giant reed as a raw material to obtain cellulose past for the production of rayon viscose and paper. Thanks to the flexible and strong of the material, giant reed can be used in the manufacture of fishing rods, brass musical instruments, canes and construction supplies. One of the most important characteristics of giant reed is that it shows strong growth capability in different soils with wide ranges of pH, salinity and high heavy metal contents and can be used for ecological remediation. Giant reed was able not only to decontaminate polluted soils with heavy metals, but also to purify the wastewater and decrease the pH and make red mud safer. Here, we review the available evidence regarding the utilization of giant reed in the field of phytoremediation and discuss the potential application of giant reed combined with advanced remediation technologies in ecological remediation.

Advanced technology valuation of the industrial utilization of nanotechnology

This article focuses on valuation of biological wastewater treatment (WWT) technology with the application of nano-fi brous carrier. The economic analysis and assessment of this developing technology is based on the data from the technology using ™ carriers. The fi rst part describes the methods of valuation of technol- ogy. The following analyses are presented: cost analysis, depreciation model, model of production chemical agent DPG and cash fl ow model. There are sensitivity analyses exploring the impact on the price of chemical agent DPG, increase of its production, price of applied carriers and accident frequency, and pro forma income statement. Results show that the application of WWT technology with the nano-fi brous carrier is a right choice in compliance with long-term economic and ecological indicators in relation to the sustainable growth of the Nowadays, the evolution of the nanotechnology is having a great impact on most of the industrial branches. This article focuses on the application of nanotechnology in the branch of industrial waste- water treatment. This paper describes the application of nano-fi brous carrier of biomass in biological wastewater treatment facilities. This technology is being tested in a research phase at one of the projects of the Advanced Remediation Technologies and Processes Center of the Technical University in Liberec (Czech Republic). The research is being developed on the basis of diverse disciplines such as chemistry, engineering of natural resources, development of textile materials, and mathematic modeling, among others. The economic valuation of the mentioned technology is based on the comparison with the already applied technology for wastewater treatment using carriers Anoxkaldnes ™ . Because of the exist- ence of sensitive data, we decided to keep the company in anonymity and call it Company A for the purposes of this work. The aim of this article is to describe the issues and methods concerning valuation of progressive technologies focused on the industrial application of nanotechnology. We also intend to defi ne advantages and disadvantages of the application of the valuation methods in order to make a sug- gestion for further work on research and practical application of nanotechnology at the industrial branch. The whole work was developed under the aid of MS Excel in order to allow actualizations and interconnections among different parts of the model. This might lead to better orientation through the results and will, therefore, ease the decision making process. We selected the methods according to the criteria shown on Table 1.

Process Results for the Integrated Near-Tank Treatment System Pilot Demonstration

The Near-Tank Treatment System (NTTS) is a supplementary waste treatment technology for Hanford tank waste being investigated as part of the Department of Energy Office of Environmental Management's Advanced Remediation Technologies (ART) Program to reduce the number of high-level waste (HLW) canisters that must be processed by the Hanford Tank Waste Treatment and Immobilization Plant (WTP). The NTTS combines four basic unit operations into one integrated processing plant: caustic leaching, cross-flow filtration, ion exchange, and electrochemical recovery of sodium. Each unit operation has been studied and tested at the bench scale and was combined into a pilot-scale unit for further development. The performance of the Continuous Sludge Leaching (CSL), Near Tank Cesium Removal (NTCR), and NTTS was evaluated by examining the process and analytical data. Overall, the NTTS integrated CSL and NTCR achieved an operational steady state that performed the waste treatment operations for which it was intended. The integrated system was stable and well-controlled, requiring very little manual intervention, and resulted in a product stream which is suitable for downstream sodium recycle, immobilization, and disposal.