Showing papers on "Bioaccumulation published in 2022"
TL;DR: In this article , a review aimed to explore the environmental consequences of the heavy metals, toxicity to the human health, as well as novel therapeutics development from the natural resources, and highlight the nanotechnological and nanomedicinal applications to treat heavy metal toxicity.
195 citations
122 citations
TL;DR: In this paper , a comparison of conventional and recent advanced wastewater treatment systems and the mechanisms of the microalgae-bacteria symbiosis system is presented. But, the conventional methods used for the removal of persistent organic pollutants (POPs) from wastewater are costly and could lead to secondary pollution including soil and water bodies pollution.
122 citations
TL;DR: In this article , the authors reviewed the research published in the last decade on the global occurrence and distribution of per-and polyfluoroalkyl substances (PFAS) in the aquatic environment and the evolving global regulatory responses to manage and mitigate the adverse human health risks posed by PFAS.
119 citations
100 citations
TL;DR: In this article , a more in-depth review on the translocation processes of metal toxins into seafood is provided, for achieving stability in aquatic environments, management techniques, genetic engineering, and remediation are recommended.
89 citations
TL;DR: In this article , a review of microbial responses to hexavalent chromium toxicity and the potential for their use in environmental remediation is presented. And the research problem and prospects for the future are discussed in order to fill these gaps and overcome the problem associated with bacterial bioremediation's realtime applicability.
Abstract: ABSTRACT Industrial effluents/wastewater are the main sources of hexavalent chromium (Cr (VI)) pollutants in the environment. Cr (VI) pollution has become one of the world’s most serious environmental concerns due to its long persistence in the environment and highly deadly nature in living organisms. To its widespread use in industries Cr (VI) is highly toxic and one of the most common environmental contaminants. Cr (VI) is frequently non-biodegradable in nature, which means it stays in the environment for a long time, pollutes the soil and water, and poses substantial health risks to humans and wildlife. In living things, the hexavalent form of Cr is carcinogenic, genotoxic, and mutagenic. Physico-chemical techniques currently used for Cr (VI) removal are not environmentally friendly and use a large number of chemicals. Microbes have many natural or acquired mechanisms to combat chromium toxicity, such as biosorption, reduction, subsequent efflux, or bioaccumulation. This review focuses on microbial responses to chromium toxicity and the potential for their use in environmental remediation. Moreover, the research problem and prospects for the future are discussed in order to fill these gaps and overcome the problem associated with bacterial bioremediation’s real-time applicability. Graphical abstract
83 citations
TL;DR: In this paper , a review of the conventional and biotechnological approaches used for removing heavy metals from wastewater and evaluating them based on their efficiency is presented. And the current state and prospects of biosorption and bioaccumulation for environmental bioremediation are reviewed.
Abstract: Due to high concentrations of numerous harmful and hazardous pollutants, particularly heavy metals, industrial wastewater has become a major problem. Heavy metal pollution and its implications for human health and the environment have increased research in developing low cost and sustainable remediation technology. Diverse conventional physicochemical and green biological methods are applied to remove heavy metals (HMs). This review article covers both the conventional and biotechnological approaches used for removal of HMs from wastewater and evaluate them based on their efficiency. Adsorption, coagulation, flocculation, chemical precipitation, membrane separation, ion exchange, flotation, and electrochemical technologies are examples of conventional methods. In some circumstances, these procedures produce quick results, although they are less efficient and cost more than biotechnological heavy metals removal (HMR). The current state and prospects of biosorption and bioaccumulation for environmental bioremediation are reviewed. Environmental considerations are evaluated, with a focus on the removal efficiency of biosorption and bioaccumulation. HMR efficiency and cost effectiveness of a range of biosorbents for the removal of pollutants are described. Furthermore, the equilibrium, kinetic, and thermodynamic behavior of the heavy metal biosorption process, based on kinetic and isotherm models, are presented. Overall, this study provides clear information of biological processes, which will help surmount technological limitations of bioseparation process application.
67 citations
TL;DR: Wang et al. as discussed by the authors collected 43 pairs of soil and grape samples from vineyards in the suburbs of Kaifeng city (wastewater-irrigated area in Henan Province, China) to assess the heavy metal (Pb, Cd, Cu, Zn and Ni) pollution level in soil, heavy metal accumulation in different grape tissues and the potential health risk via consumption of grapes.
55 citations
TL;DR: Wang et al. as mentioned in this paper collected 43 pairs of soil and grape samples (leaf and fruit) from vineyards in the suburbs of Kaifeng city (wastewater-irrigated area in Henan Province, China) to assess the heavy metal pollution level in soil, heavy metal accumulation in different grape tissues and the potential health risk via consumption of grapes.
53 citations
TL;DR: In this article , a review spotlights various analytical detection, regulatory, and mitigation considerations for efficiently removing hazardous pesticides from the environment, focusing on detecting and quantifying multiple pesticides and removing the pesticides present in the specific matrix without creating harmful derivatives.
TL;DR: In this article, the occurrence of microplastics in 14 different marine dried fish products from seven Asian countries was reported, with fibers representing 80% of the total microplastic content.
TL;DR: In this article , the occurrence of microplastics in 14 different marine dried fish products from seven Asian countries was reported, with fibers representing 80% of the total microplastic content.
TL;DR: In this article , the authors provide an overview of several routes for modifying titanium dioxide (TiO2) and the as-improved photocatalytic performance with regard to OPW treatment is reviewed.
Abstract: Oilfield produced water (OPW) has become a primary environmental concern due to the high concentration of dissolved organic pollutants that lead to bioaccumulation with high toxicity, resistance to biodegradation, carcinogenicity, and the inhibition of reproduction, endocrine, and non-endocrine systems in aquatic biota. Photodegradation using photocatalysts has been considered as a promising technology to sustainably resolve OPW pollutants due to its benefits, including not requiring additional chemicals and producing a harmless compound as the result of pollutant photodegradation. Currently, titanium dioxide (TiO2) has gained great attention as a promising photocatalyst due to its beneficial properties among the other photocatalysts, such as excellent optical and electronic properties, high chemical stability, low cost, non-toxicity, and eco-friendliness. However, the photoactivity of TiO2 is still inhibited because it has a wide band gap and a low quantum field. Hence, the modification approaches for TiO2 can improve its properties in terms of the photocatalytic ability, which would likely boost the charge carrier transfer, prevent the recombination of electrons and holes, and enhance the visible light response. In this review, we provide an overview of several routes for modifying TiO2. The as-improved photocatalytic performance of the modified TiO2 with regard to OPW treatment is reviewed. The stability of modified TiO2 was also studied. The future perspective and challenges in developing the modification of TiO2-based photocatalysts are explained.
TL;DR: In this article , the authors summarized the current knowledge on PFAS occurrence in different environmental media and their effects on living organisms, with a particular emphasis on humans, and described present and provisional legislative measures in the European Union framework strategy to regulate PFAS manufacture, import and use as well as some of the most promising treatment technologies designed to remediate PFAS contamination.
Abstract: Per- and polyfluoroalkyl substances (PFAS) are a group of over 4700 heterogeneous compounds with amphipathic properties and exceptional stability to chemical and thermal degradation. The unique properties of PFAS compounds has been exploited for almost 60 years and has largely contributed to their wide applicability over a vast range of industrial, professional and non-professional uses. However, increasing evidence indicate that these compounds represent also a serious concern for both wildlife and human health as a result of their ubiquitous distribution, their extreme persistence and their bioaccumulative potential. In light of the adverse effects that have been already documented in biota and human populations or that might occur in absence of prompt interventions, the competent authorities in matter of health and environment protection, the industries as well as scientists are cooperating to identify the most appropriate regulatory measures, substitution plans and remediation technologies to mitigate PFAS impacts. In this review, starting from PFAS chemistry, uses and environmental fate, we summarize the current knowledge on PFAS occurrence in different environmental media and their effects on living organisms, with a particular emphasis on humans. Also, we describe present and provisional legislative measures in the European Union framework strategy to regulate PFAS manufacture, import and use as well as some of the most promising treatment technologies designed to remediate PFAS contamination in different environmental compartments.
TL;DR: In this article , the authors assessed the combined toxicological effects of microplastics and adsorbed pollutants by adding them to marine fish diet and found significant changes in bacterial species richness, beta diversity, and composition of gut microbiota as a consequence of both pollutants and polluted MPs ingestion.
TL;DR: In this article , the implications of applying silver nanoparticles in agriculture and their possible consequences are comprehensively discussed, and the potential of biogenic nanoparticles-viable antimicrobial agents for enhanced applications in agriculture as biopesticides are also evaluated.
TL;DR: In this paper, the implications of applying silver nanoparticles in agriculture and their possible consequences are comprehensively discussed, and the potential of biogenic nanoparticles-viable antimicrobial agents for enhanced applications in agriculture as biopesticides are also evaluated.
TL;DR: In this paper, the authors assessed the combined toxicological effects of microplastics and adsorbed pollutants by adding them to marine fish diet and found significant changes in bacterial species richness, beta diversity, and composition of gut microbiota as a consequence of both pollutants and polluted MPs ingestion.
TL;DR: In this article , the authors describe the application of bioremediation methods, which involve elimination of the hazards of uranium, by transforming into low oxidation form using natural microbes and plants using phytoextraction and phytotranslocation of uranium through xylems from soil to roots and shoots of plants.
TL;DR: In this paper , the impacts of microplastics on bioaccumulation of heavy metals in vegetables in terrestrial environment are investigated, and the results showed that microplastic in soil would facilitate heavy metals entering rape plants.
TL;DR: In this article , the authors reviewed the current state of knowledge on the fate and effects resulting from the presence of the pharmaceuticals' transformation drugs in the environment and concluded that some transformation products may be as harmful as their native forms.
TL;DR: In this article , a review evaluated recent research outcomes on nanomaterials that are employed to remove persistent organic pollutants (POPs) in water systems. But, the major mechanisms for POPS uptake by nano-adsorbents include electrostatic interaction, hydrophobic (van der Waals, van der Waal, π-π and electron donor-acceptor) interaction and hydrogen bonding.
Abstract: The intensification of urbanisation and industrial activities significantly exacerbates the distribution of toxic contaminations into the aqueous environment. Persistent organic pollutants (POPs) have received considerable attention in the past few decades because of their persistence, long-distance migration, potential bioaccumulation, latent toxicity for humans and wildlife. There is no doubt that POPs cause serious effects on the global ecosystem. Therefore, it is necessary to develop a simple, safe and sustainable approach to remove POPs from water bodies. Among other conventional techniques, the adsorption process has proven to be a more effective method for eliminating POPs and to a larger extent meet discharge regulations. Nanomaterials can effectively adsorb POPs from aqueous solutions. For most POPs, a >70% adsorptive removal efficiency was achieved. The major mechanisms for POPS uptake by nano-adsorbents includes electrostatic interaction, hydrophobic (van der Waals, π-π and electron donor-acceptor) interaction and hydrogen bonding. Nano-adsorbent can sustain a >90% POPs adsorptive removal for about 3 cycles and reuseable for up to 10 cycles. Challenges around adsorbent ecotoxicity and safe disposal were also discussed. The present review evaluated recent research outcomes on nanomaterials that are employed to remove POPs in water systems.
TL;DR: In this paper, the authors reviewed the current state of knowledge on the fate and effects resulting from the presence of the pharmaceuticals' transformation drugs in the environment and concluded that some transformation products may be as harmful as their native forms, however for many groups of drugs this data is still insufficient to assess the risk posed by their presence.
TL;DR: In this article, the toxic effects of per-and polyfluoroalkyl substances (PFASs) encountered by various plants from physiological, biochemical and molecular perspectives are also summarized.
TL;DR: In this paper , the toxic effects of per-and polyfluoroalkyl substances (PFASs) encountered by various plants from physiological, biochemical and molecular perspectives are also summarized.
01 Feb 2022
TL;DR: In this article , a review has been conducted with an objective to highlight the concerns surrounding TCS exposure to aquatic organisms, the infiltration routes into the food chain, its persistence and accumulation, teratogenic, biochemical and cytogenic effects on a wide range of aquatic species.
Abstract: Triclosan (TCS), a lipophilic broad-spectrum biocide is widely used in personal care, acrylic, veterinary, medical and household products. It has been observed to be present in aquatic environments, animal and plant tissues around the world, and even in human blood, urine and breast milk. Under natural conditions, TCS degrades photolytically as well as through microbial action into more persistent and toxic byproducts like dioxins. Moreover, accumulation in deep water bodies or soil strata where light is not adequately available makes its degradation even more prolonged. Present review has been undertaken with an objective to highlight the concerns surrounding TCS exposure to aquatic organisms, the infiltration routes into the food chain, its persistence and accumulation, teratogenic, biochemical and cytogenic effects on a wide range of aquatic species. The widespread use of products containing TCS and potential toxicity at lethal concentrations makes it a compound of utmost concern worldwide and hence its use under permissible levels, proper disposal needs to be regulated.
TL;DR: In this paper , the physicochemical properties of polystyrene NPs (PS-NPs: 50 nm) and microplastics (MPs: 300 nm, 600 nm, 4 μm) in the gastrointestinal tract were investigated.