The scarcity of clean water has become a global environmental problem which constrains the development of public health, economy, and sustainability. In recent years, natural polyphenols have drawn increasing interests as promising platforms towards diverse water remediation composites and devices, owing to their abundant and renewable resource in nature, highly active surface chemistry, and multifunctionality. This review aims to summarize the most recent advances and highlights of natural polyphenol-based composite materials (, nanofibers, membranes, particles, and hydrogels) for water remediation, by focusing on their structural and functional features, as well as their diversified applications including membrane filtration, solar distillation, adsorption, advanced oxidation processes, and disinfection. Finally, the future challenges in this field are also prospected. It is anticipated that this review will provide new opportunities towards the future development of natural polyphenols and other kinds of naturally occurring molecules in water purification applications.
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http://dx.doi.org/10.1039/d2mh00768a | DOI Listing |
Heliyon
December 2024
Centre of Advanced Research in Bionanoconjugates and Biopolymers, "Petru Poni" Institute of Macromolecular Chemistry, 41A, Grigore Ghica Voda Alley, 700487, Iasi, Romania.
The escalating global problem of antibiotic contamination in wastewater demands innovative and sustainable remediation technologies. This paper presents a highly efficient photocatalytic material for water purification: a three-dimensional ultra-porous structure of interconnected GaN hollow microtetrapods (aero-GaN), its performance being further enhanced by noble metal nanodot functionalization. This novel aero-nanomaterial achieves more than 90 % of tetracycline degradation within 120 min under UV and solar irradiation, demonstrating its effectiveness in both static and dynamic flow conditions, with the potential for reuse and recyclability.
View Article and Find Full Text PDFEnviron Pollut
December 2024
Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, PR China. Electronic address:
The proliferation of weeds, pests, and plant diseases in crop cultivation has driven the increased application of herbicide lactofen, insecticide acetamiprid, and fungicide carbendazim, contributing to environmental pollution. Microorganisms are requently employed to remove pesticide residues from the environment. However, Liquid bacterial agents encounter difficulties in transportation and preservation during application and the current immobilized bacterial agents have a single degradation function.
View Article and Find Full Text PDFEnviron Res
December 2024
State Key Laboratory of Nuclear Resources and Environment, Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Jiangxi Provincial Key Laboratory of Genesis and Remediation of Groundwater Pollution, School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang, Jiangxi, 330013, P.R. China.
Reclaimed water plays a pivotal role in addressing water scarcity and pollution. The carbon (C) cycle significantly impacts aquatic ecosystems and water quality, yet the C biogeochemical cycle in nutrient-rich reclaimed water remains enigmatic. This study focuses on reclaimed water, developing a conceptual biogeochemical mass balance model to examine C cycling and assess the C budget in the highly eutrophic Jian and Chaobai rivers.
View Article and Find Full Text PDFChemosphere
December 2024
Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming, 650224, China. Electronic address:
The environmental safety and health impacts of nanosilver have attracted much attention due to their continuous detection in water. Although the effects of nanosilver on aquatic organisms have been reported, the ecotoxicity and underlying mechanism of nanosilver in aquatic organisms are not fully understood. Fish gills are the primary target organs of pollutant exposure in aquatic environments, and is important to clarify the impact of nanosilver on aquatic organisms by systematically and comprehensively revealing the effect of nanosilver on fish gills.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Bioprocess Engineering Laboratory, School of Chemical and Biotechnology, Centre for Bioenergy, SASTRA Deemed to be University, India. Electronic address:
The novelty of this study is to examine the impact of different solvent systems, namely organic and deep eutectic solvents, on recovery yield, antioxidant activity, poly-dispersity index, and functional properties of microbial dextran. The optimized conditions for maximum dextran recovery were obtained using organic solvent found to be: supernatant: organic solvent - 1:4 v/v; organic solvents: ethanol, isopropanol, and acetone; temperature: 0 °C; and time: 16 h. Though a similar structure was obtained for dextran recovered using various solvents, the degree of branching varied, with DES-precipitated dextran having the highest branching of 20 % α-(1,3) linkages.
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