Article
Environmental Sciences
Qingzhu Jia, Junli Wang, Fangyou Yan, Qiang Wang
Summary: A quantitative structure-toxicity relationship (QSTR) model based on norm descriptors was established in this study to predict the toxicity of pesticides to Daphnia magna. The model showed good predictability, stability, and reliability, indicating that norm descriptors might be universally applicable in describing the relationship between the toxicity and structures of pesticide compounds.
Article
Environmental Sciences
Andrew H. Nagel, Chad W. Cuss, Greg G. Goss, William Shotyk, Chris N. Glover
Summary: Limited chronic toxicity data exists regarding the trace element thallium's impact on aquatic biota, hindering the establishment of water quality criteria for this metal. Daphnia magna showed lower sensitivity to thallium under controlled laboratory conditions compared to the current Canadian regulatory guideline value.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Simona Mondellini, Matthias Schott, Martin G. J. Loder, Seema Agarwal, Andreas Greiner, Christian Laforsch
Summary: This study found that exposure to water soluble synthetic polymers can cause life history changes and altered levels of reactive oxygen species in the freshwater key species D. magna, although acute mortality was not observed. These sublethal effects may result in cascading effects that can impact the entire food web.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Peng Wang, Qin-Qin Li, Jin Hui, Qian-Qian Xiang, Hui Yan, Li-Qiang Chen
Summary: The study showed that exposure to MPs-20 and MPs-30 resulted in significant accumulation of microplastics in the gut of D. magna, decreased survival and heart rate. Metabolomics analysis revealed that both MPs-20 and MPs-30 induced significant changes in numerous metabolites in D. magna.
Article
Environmental Sciences
An Xuehua, Lui Xinju, Jiang Jinhua, Wang Feidi, Lv Lu, Li Gang, Wu Shenggan, Zhao Xueping
Summary: This study assessed the toxic effects of the broad-spectrum triazole fungicide prothioconazole (PTC) and its metabolite prothioconazole-desthio (PTCd) on Daphnia magna. The results showed that both PTC and PTCd had adverse effects on the growth and reproduction of D. magna, with PTC being more toxic than PTCd. Therefore, the environmental risks of these metabolites should not be ignored.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Joyce Ribeiro Santos-Rasera, Regina Teresa Rosim Monteiro, Hudson Wallace Pereira de Carvalho
Summary: This study investigated the uptake, acute toxicity, and depuration of ZnO nanoparticles using the model fresh water organism Daphnia magna. The results showed that the toxicity of the nanoparticles depended on their size and the presence of surfactant. Contrary to previous reports, the study did not detect any depuration of ZnO nanoparticles after exposure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Zhongshi He, Youxin Chen, Da Huo, Jin Gao, Yewei Xu, Rui Yang, Yiming Yang, Gongliang Yu
Summary: This study demonstrated the multi-organ toxicity of cylindrospermopsin (CYN) to Daphnia magna through behavioral observation, chemical detection, and transcriptome analysis. CYN inhibits protein synthesis, induces oxidative stress and neurotoxicity, and interferes with energy metabolism in Daphnia magna. Additionally, CYN triggers self-defense responses in Daphnia magna by moderating lipid metabolism and distribution.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Qi Li, Qian Zhao, Jiahua Guo, Xi Li, Jinxi Song
Summary: With the widespread use of diethylstilbestrol (DES), it has become a common contaminant in the aquatic environment. It is toxic to a wide range of aquatic organisms, disrupting the water flea growth and further interfering with several ecosystem services. Nevertheless, the molecular mechanism of DES in water fleas is still unexplicit. In this study, the 21-day chronic test showed that a negative effect of growth and reproduction can be observed with DES exposure. Transcriptomic analysis revealed that exposure to DES significantly affects energy metabolism, lipid metabolism, the digestive system, transport, and catabolism pathways in D. magna, leading to reduced body length and delayed first spawning time. Therefore, this study emphasizes the threat of DES to D. magna and provides insights into its molecular mechanism.
Article
Environmental Sciences
Roberta Tolosi, Marco De Liguoro
Summary: The study investigated the delayed toxic effects of Fluoroquinolones (FQs) in D. magna, finding that ENR and FLU had higher toxicity compared to LEV. The binary mixtures of these compounds followed the principle of Concentration Addition, and there was no evident synergistic interaction. The study highlights the importance of considering delayed toxic effects and interactions in FQ mixtures for Environmental Risk Assessment.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Engineering, Environmental
Dafna Eluk, Orlando Nagel, Ana Gagneten, Ulises Reno, Rafael Althaus
Summary: This study evaluated the acute and chronic toxicological effects of six fluoroquinolones on Daphnia magna. The NOEC values varied for different fluoroquinolones in the chronic study. Concentrations of ciprofloxacin, norfloxacin, and ofloxacin found in water sources from some countries may cause toxicological damage to D. magna.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Environmental Sciences
Kai Wang, Yaping Liang, Manman Duan, Wunan Che, Lu He
Summary: This study investigated the chronic toxicity of the novel pesticide broflanilide on Daphnia magna. The results showed that broflanilide affected the growth, development, reproduction, and offspring development of D. magna. It inhibited the expression of chitinase, ecdysteroid, and related genes, affecting molting. Broflanilide also affected the neurotransmitter function and behavior of D. magna, reducing swimming distance and speed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Marine & Freshwater Biology
Jiaqiang Liu, Haohan Yang, Qingjun Meng, Qiyan Feng, Zhenhua Yan, Jianchao Liu, Zhigang Liu, Zhengxie Zhou
Summary: This study investigated the intergenerational toxicity of polystyrene microplastics (PS-MPs) and roxithromycin (ROX) on Daphina magna. The results showed that the carrier effects of aged PS-MPs altered the survival and reproduction of D. magna. The combined exposure of PS-MPs and ROX had a greater impact on the swimming behavior and feeding behavior of D. magna compared to the single exposure. The biochemical biomarkers and time of first brood were identified as the most sensitive indicators for assessing the interaction of emerging contaminants.
AQUATIC TOXICOLOGY
(2022)
Article
Environmental Sciences
Songhee Lee, Sungjong Lee, Eun Hea Jho, Sooim Shin, Chang Min Park
Summary: This study reveals that FeAB may induce oxidative stress in Daphnia, inhibiting their antioxidant system. Exposure to low concentrations of FeAB results in higher ROS/RNS levels, indicating antioxidant mechanism failure, while exposure to relatively high concentrations leads to reduced ROS/RNS levels possibly due to decreased production from cell damage.
Article
Environmental Sciences
Xiang Wan, Chen Cheng, Yurong Gu, Xiubo Shu, Liqiang Xie, Yanyan Zhao
Summary: The study investigated the single and mixture toxic effects of MC-LR and Phe mixtures on aquatic organisms, with results showing that the mixture toxicity was concentration-dependent and exhibited synergistic effects at low concentrations. The protective effects of high concentrations of MC-LR may lead to antagonistic effects. Furthermore, exposure to low concentrations of the mixture had a greater toxic effect on D. magna than either chemical alone.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Biochemistry & Molecular Biology
Mapopa Chipofya, Hilal Tayara, Kil To Chong
Summary: This work presents a probabilistic model for predicting the toxicity of ionic liquids based on their chemical structure. It achieved reliable and accurate predictions with accompanying uncertainty levels. A user-friendly web server was also developed for researchers and practitioners to make predictions using this model.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Environmental
John Kwame Bediako, Jong-Won Choi, Myung-Hee Song, Che-Ryong Lim, Yeoung-Sang Yun
Summary: Target-tunable adsorbents were successfully developed through facile polyelectrolyte complexation for metal treatment in water, exhibiting good adsorption properties and tunability to efficiently remove heavy metals or recover precious metals.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Jong-Won Choi, John Kwame Bediako, Ji-Hye Kang, Che-Ryong Lim, Yub Raj Dangi, Hyo-Jin Kim, Chul-Woong Cho, Yeoung-Sang Yun
Summary: The study developed an in-situ microwave-assisted leaching and selective separation process using biphasic aqua regia-ionic liquid systems to efficiently recover precious metals from waste printed circuit boards, achieving high selective separation efficiencies.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Wei Wei, Yanzi Qiu, Yufeng Zhao, Kai Zhang, Yajun Ji, Hui Gao, John Kwame Bediako, Yeoung-Sang Yun
Summary: An ionic barrier concept was proposed to introduce selectivity function for precious metals (PMs) adsorption in this study. MIAC, as a model system, showed excellent Pd(II) selectivity and good reutilization property, which is beneficial for the separation and recovery of precious metals.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Che-Ryong Lim, Jong-Won Choi, Yeoung-Sang Yun, Chul-Woong Cho
Summary: The study focused on separating palladium and platinum from acidic solutions using 15 hydrophobic ionic liquids. It considered two cases: efficient separation from single metal solutions and selective separation from mixed solutions. Experimental and theoretical comparisons showed that different ILs have varying extraction efficiencies for Pd and Pt, and toxicity is an important factor in determining the optimal choice for sustainable development.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Jong-Won Choi, Jisu Kim, Sung-Kon Kim, Yeoung-Sang Yun
Summary: This study proposes a simple and green approach to recover NiMnCoC2O4 from spent LiNiMnCoO2 (NMC) batteries as an electrode material for high-performance pseudocapacitors. The recovery process involves leaching and separation steps, achieving high efficiency and stability for energy storage applications.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Xiaoyu Lin, Duy Tho Tran, Myung-Hee Song, Yeoung-Sang Yun
Summary: The study fabricated QPCFs for the recovery of Au(I) from alkaline e-waste leachate. QPCFs exhibited high adsorption performance and fast adsorption rate. Application of QPCFs in bioleaching solution showed high recovery efficiency for Au with selectivity.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Jong -Won Choi, Chul-Woong Cho, Yeoung-Sang Yun
Summary: This research demonstrated that water-soluble organic acids can be used as green leachants for extracting strategic metals from spent lithium-ion batteries, and developed a model based on linear free energy relationships to predict leaching efficiency. By considering both toxicity and leaching efficiency, citric acid was selected as a green and efficient leachant, with the additional use of glucose and microwave treatment improving leaching performance further.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Bo-Gyeon Cho, Se-Been Mun, Che-Ryong Lim, Su Bin Kang, Chul-Woong Cho, Yeoung-Sang Yun
Summary: Cellulose can be used as a raw material for filters and adsorbents to remove micropollutants, with microcrystalline cellulose showing high adsorption affinity, especially for cationic micropollutants. A model based on the linear free energy relationship equation was developed to predict adsorption affinity values with an R2 of 0.895, and internal and external validation studies confirmed the model's reasonableness and acceptability with an SE = 0.207 log unit.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chul-Woong Cho, Yeoung-Sang Yun
Summary: Ionic liquids (ILs) are a class of chemicals with controllable properties through modification of their chemical structure. This study developed a predictive model for the dielectric constant of ILs using the linear free-energy relationship equation. The research revealed that the structure of cations has a greater influence on the dielectric constant, and the H-bonding acidity of cations and basicity of anions, as well as the dipolarity/polarizability of cations and anions, are important factors in the prediction.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
John Kwame Bediako, Jong-Won Choi, Myung-Hee Song, Yeoung-Sang Yun
Summary: This study presents a strategy to separate and recover copper and gold from waste PCBs using polyethylenimine-polyacrylic acid composite adsorbents. By adjusting the mixing ratio of PEI and PAA, the metals can be recovered as single constituents or an alloy. This method shows promise for future studies on the recovery of metallic minerals from bioleachates.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Materials Science, Multidisciplinary
John Kwame Bediako, Ji-Hye Kang, Yeoung-Sang Yun, Soo-Hyung Choi
Summary: This study explores seamless polyelectrolyte complex (PEC) processing techniques for fabricating adsorbents in wastewater treatment. The phase transition of PEC complexes was studied, and spherical PEC resins were successfully prepared. The PEC resins showed outstanding performance for heavy metal adsorption in wastewater treatment.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Chemical
Haribandhu Chaudhuri, Yeoung-Sang Yun
Summary: Researchers have made significant progress in the synthesis and application of two-dimensional materials, providing promising solutions for environmental issues. Multifunctional composite materials, such as GO/LDHs and GO/MXenes, have shown excellent performance in adsorption, photocatalysis, and electrocatalysis for environmental applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Chemistry, Physical
Haribandhu Chaudhuri, Yeoung-Sang Yun
Summary: The growing global demand for sustainable energy has led researchers to focus on the development of smart hierarchical 2D materials and their composites. 2D materials, especially MXenes, LDHs, and GO, have shown great promise in energy storage due to their unique features. The combination of GO-based 2D materials, particularly GO/LDHs and GO/MXenes, can enhance energy conversion and storage potentials. This review discusses the properties, applications, structure-property-performance correlation, challenges, and future opportunities of GO/LDHs and GO/MXenes in energy storage.
JOURNAL OF POWER SOURCES
(2023)
Article
Environmental Sciences
Sung Il Yoon, Minhee Han, Haribandhu Chaudhuri, Yeoung-Sang Yun
Summary: A fixed-bed high-capacity/high-rate hybrid column was developed using commercial ionexchange beads and ion-exchange fibers. The hybrid column exhibited excellent breakthrough bed volume and utilization efficiency of capacity at a high service flow rate for the adsorption of Cd(II). The regeneration experiment showed high capacity retention.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Haribandhu Chaudhuri, Che-Ryong Lim, Yeoung-Sang Yun
Summary: This study presents the development of a highly loaded carboxylic acid functionalized sulfur-containing POSS (POSS-S-COOH) with exceptional adsorption capabilities for platinum (Pt) and palladium (Pd) ions. The adsorbent exhibited high selectivity towards Pt and Pd ions in the presence of other metal ions. It also demonstrated proficient recovery capabilities without the need for harsh desorbents. Thermodynamic and density functional theory calculations supported the experimental findings. The acid-resistant nature of POSS-S-COOH makes it a promising adsorbent for industrial applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)