Publications by authors named "Chiu Wen Chen"

The effect of ultraviolet (UV) light on structural changes is a significant concern, particularly regarding the weathering and aging effects on microplastics (MPs). This research focused on examining how various UV light wavelengths (UVC, UVB, and UVA) influence the adsorption behavior of aged polyethylene (PE) MPs toward tetracycline (TC). To explore the adsorption mechanism in detail, adsorption kinetics were studied under different UV light wavelengths.

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A novel graphene-bridged MoS/CoO (MCG) nanohybrid was well fabricated by a hydrothermal route. The purpose of valuable and economical S-scheme systems with vigorous interface interactions is pressing to photocatalytic efficiency and efficient utilization. While mighty progress has been created with respect to charge carrier bridges, the charge transferring ability of the facility charge carrier bridges is far from capable owing to lower electrical conductivity.

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  • The study examines the presence and seasonal changes of endocrine-disrupting compounds (EDCs), specifically phthalate esters (PAE) and alkyl phenols (AP), in marine microplankton over different seasons (Summer 2022, Autumn 2022, Spring 2023) in a polluted area.
  • Sample analysis showed a wide range of concentrations of various EDCs, primarily di-isononyl phthalate (DiNP), di-(2-ethylhexyl) phthalate (DEHP), and nonylphenols (NP), with significant variability depending on the season.
  • The research suggests that rivers are key to EDC distribution in microplankton, and factors like eutrophication
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Efficient detection of chloramphenicol (CAP) in the environment and food products is crucial for addressing global health and environmental safety concerns. This study presents the development of a cost-effective hybrid electrocatalyst comprising lignocellulosic carbon sheets, graphene oxide, and manganese oxide (LCSs/GO@MnO) for CAP detection using a simple electrochemical sensor fabricated on a glassy carbon electrode (GCE) substrate. The synergistic interaction between LCSs, GO, and MnO enhance the electroactive surface area of GCE, facilitating effective dispersion and electrode modification.

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Microplastics (MPs) pose a growing threat to coral reef ecosystems worldwide. However, data on MP contamination in coral reefs remain limited, hampering accurate ecological risk assessment. This study investigated MP contamination in coral reefs at South Penghu Marine National Park, analyzing 40 samples from 31 coral species.

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Despite the adsorption of microplastics (MPs), the precise quantification of their concentrating effect on persistent organic pollutants (POPs) remains uncertain. Therefore, in this study, POPs in MPs, POPs in suspended particulate matter (SPM), and dissolved POPs in seawater were distinguished to quantify the enrichment factor (EF) for characterizing the concentrating effects of MPs and SPM on POPs. The results showed that the logarithm of EF (log EF) for POPs in MPs was 5.

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The objective of this study is to comprehensively characterize persistent organic pollutants (POPs) in seawater at Kaohsiung Harbor, focusing on their concentrations, partitioning behaviors, and profiles in both particle and liquid phases. We analyzed 100 L seawater for each sample, finding total dioxin-like toxicity (PCDD/Fs + PCBs + PBDD/Fs) ranging from 0.00936 to 0.

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Vanadium (V) is a hazardous element with widespread environmental presence, particularly in marine environments, due to both natural and industrial sources. This review examines vanadium's impact on marine organisms, highlighting its disruption of metabolic processes in fish, microalgae, and crustaceans, leading to oxidative stress, impaired growth and reproduction. Vanadium accumulation in marine food chains poses risks to higher organisms, including humans.

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The pervasive issue of microplastics in aquatic environments presents a formidable challenge to traditional water treatment methodologies, including those utilizing KMnO. This study pioneers advanced oxidation processes (AOPs) method aimed at improving the degradation of PE microplastics by employing a dual treatment strategy that combines KMnO oxidation with UV irradiation. Detailed analysis of the surface modifications and chemical functional groups of the treated PE microplastics revealed the establishment of Mn-O-Mn linkages on their surfaces.

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  • * Microalgae, which are photosynthetic microorganisms, offer solutions for these challenges by enhancing marine productivity and serving as a nutritious source of feed.
  • * This review explores the integration of microalgal technology into aquaculture practices, highlighting its potential for improving water quality and overall sustainability in the sector.
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  • PFAS are harmful pollutants that persist in the environment and pose serious health risks due to their unique chemical properties and widespread occurrence.
  • The review examines sources of PFAS in seafood and evaluates advanced detection methods like nanoparticle-based, biosensor, and mass spectrometric techniques, while addressing their challenges.
  • It also discusses recent research and regulations on PFAS, calls for global monitoring, and suggests innovative solutions to reduce PFAS contamination in seafood, emphasizing remaining research gaps and necessary improvements in detection methods.
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Microalgae-assisted bioremediation, enriched by nanomaterial integration, offers a sustainable approach to environmental pollution mitigation while harnessing microalgae's potential as a biocatalyst and biorefinery resource. This strategy explores the interaction between microalgae, nanomaterials, and bioremediation, advancing sustainability objectives. The potent combination of microalgae and nanomaterials highlights the biorefinery's promise in effective pollutant removal and valuable algal byproduct production.

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Rising concerns about global environmental degradation underscore the pressing need for effective solutions to combat heavy metal pollution. Industries such as semiconductor and steel production discharge vanadium into marine ecosystems, posing significant risks to both marine life and human health. The current study investigates efficacy of utilizing marine thraustochytrid for efficient vanadium removal outcompeting other microbial sources.

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We evaluated the influence of organic matter in polycyclic aromatic hydrocarbons (PAHs) in port sediments using multiple linear regression (MLR) and prediction models. Total sediment PAHs ranged between 45 and 3230 ng/g dw (average: 557 ± 962 ng/g dw), with PAHs primarily originating from river inputs, confined to areas near the estuaries. Coal/biomaterial combustion and petroleum mainly contribute to the presence of PAHs along estuaries, with medium-high to high ecological risks.

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This study examined the sediment metal fractions and availability to infer bioaccumulation in marine harbor benthic organisms. Total metals were analyzed using atomic absorption spectrometry and inductively coupled plasma-optical emission spectrometry for chemical fractions and organisms. The results showed similar metal concentrations and distribution driven by rivers and harbor pollution.

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  • * PAHs levels in microplankton ranged significantly, peaking in spring, with a notable spatial distribution, indicating higher concentrations in the southern regions of the studied area.
  • * There is a strong correlation between PAHs and environmental factors, notably in colder seasons and areas with lower salinity, highlighting the role of suspended matter and plankton in PAH transport and distribution.
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Marine organisms, especially top predators such as sharks, are susceptible to environmental pollutants like microplastics (MPs) and phthalate esters (PAEs), leading to ecosystem risks. Research on contamination in these apex species is, however, still limited. This study investigated MPs and PAEs in multiple shark species (Isurus oxyrinchus, Alopias superciliosus, Alopias pelagicus, Carcharhinus brevipinna, and Sphyrna zygaena) off Taiwan's eastern coast.

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  • - This study examined the presence and effects of microplastics (MPs) in hard clams (Meretrix taiwanica) from Taiwan, finding that clamshells had significantly higher amounts of MPs compared to soft tissues.
  • - Two new risk indices were developed to evaluate the ecological and health impacts of MPs, showing a higher ecological risk in clam soft tissues and indicating that health hazards from metals found in shells are negligible, especially as consumption risk decreases with age.
  • - The main types of MPs found in the clams were predominantly small, fibrous, and blue, with rayon being the most common polymer, suggesting that MPs pose potential risks to both marine ecosystems and human health through shellfish consumption.
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In this research, the dimensional catalysts of pure g-CN photocatalysts (1D, 2D, and 3D) were investigated for the reduction of the highly toxic/carcinogenic Cr(VI) under visible light irradiation. The catalysts underwent explanation through various surface analysis techniques. According to the BET data, the specific surface area of the 3D catalyst was 1.

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This study examines the combined effects of polyethylene microplastics (PE-MP) and copper (Cu) on the immune and oxidative response of Litopenaeus vannamei. PE-MP adsorbed with Cu at 2.3, 6.

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The interest in algae-derived bioactive compounds has grown due to their potential therapeutic efficacy against a range of diseases. These compounds, derived from proteins, exhibit diverse functions and profound pharmacological effects. Recent research has highlighted the extensive health benefits of algae-derived bioactive compounds, positioning them as potential natural antioxidants in the food, pharmaceutical, and cosmetic industries.

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  • - The growing emphasis on wastewater treatment is largely due to the environmental and health risks posed by hard-to-treat pharmaceutical compounds, which traditional methods often fail to eliminate.
  • - The electro-Fenton (EF) method, a new advanced oxidation process combining electrochemistry with traditional Fenton chemistry, has emerged as a promising solution for effectively breaking down these persistent contaminants in wastewater.
  • - The review highlights key factors affecting the efficiency of the EF process, such as pH and current density, and discusses its scalability and commercialization potential, while also addressing ongoing challenges in wastewater treatment.
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In the evolving field of food and agriculture, pesticide utilization is inevitable for food production and poses an increasing threat to the ecosystem and human health. This review systematically investigates and provides a comprehensive overview of recent developments in smart electrochemical devices for detecting pesticides in agricultural food and runoff contaminants. The focus encompasses recent progress in lab-scale and portable electrochemical sensors, highlighting their significance in agricultural pesticide monitoring.

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In this study, biochar derived from chestnut shells was synthesized through pyrolysis at varying temperatures from 300 °C to 900 °C. The study unveiled that the pyrolysis temperature is pivotal in defining the physical and chemical attributes of biochar, notably its adsorption capabilities and its role in activating peracetic acid (PAA) for the efficient removal of acetaminophen (APAP) from aquatic environments. Notably, the biochar processed at 900 °C, referred to as CN900, demonstrated an exceptional adsorption efficiency of 55.

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