Article
Engineering, Environmental
Zedong Lu, Chen Li, Zibo Jing, Xiuwei Ao, Zhongyun Chen, Wenjun Sun
Summary: The study found that once BAC filters reach a steady state, GAC adsorption still plays a major role in removing organic matter due to bioregeneration. Iodine value can be used as an indicator of BAC performance in the initial stages, dominated by adsorption, but not in later stages. Pore-size distribution characteristics may be a better indicator, representing both adsorption performance and microbial activity.
Article
Engineering, Chemical
Michel Lonji Kalombo, Amos Adeniyi, Nomvuyo Nomadolo, Katlego Setshedi, Moshawe Jack Madito, Ncholu Manyala, Richard Kadiambuji Mbaya
Summary: This study reports on the synthesis of a Janus Ppy-GAC nanocomposite as a robust adsorbent for efficient removal of organic and inorganic pollutants from wastewater, showing strong interfacial bond between Ppy and GAC. A novel method for preparing Ppy nanoparticles was employed, and materials were characterized using Raman spectroscopy and Atomic Force Microscopy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Environmental Sciences
Yuan Yang, Weihang Deng, Yisong Hu, Rong Chen, Xiaochang C. Wang
Summary: This study investigated the performance and mechanism of a gravity-driven dynamic membrane bioreactors (DMBR) with GAC addition (G-DMBR) for domestic wastewater treatment. It was found that adding GAC effectively enhanced the permeability and flux of the dynamic membrane, as well as regulated the microbial community structure, leading to stable and efficient wastewater treatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Grace T. Crowe, Husein Almuhtaram, Robert C. Andrews, Michael J. McKie
Summary: Incorporating GAC caps into the filtration process can effectively reduce cyanotoxin exposure, but complete replacement of filter media with GAC is costly. A pilot study conducted in Oregon showed that replacing the top 15 cm of anthracite media with GAC caps can improve cyanotoxin removal, but the effectiveness decreases over time. However, this study suggests that using GAC caps can provide a cost-efficient and effective barrier for reducing cyanotoxin exposure after several months of continuous operation.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Zhimin He, Xiaoyi Xu, Bin Wang, Zhenfei Lu, Dezhi Shi, Wei Wu
Summary: In this study, iron-loaded granular activated carbon (Fe-GAC) was prepared and used as a catalyst in the heterogeneous Fenton oxidation treatment of tetracycline (TC). The Fe-GAC/Fenton system showed a higher removal rate and lower catalyst dosage compared to the GAC/Fenton system. Additionally, Fe-GAC/Fenton exhibited higher mineralization efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Xiaobin Tang, Wouter Pronk, Jacqueline Traber, Heng Liang, Guibai Li, Eberhard Morgenroth
Summary: The integrated GAC/GDM process shows promising potential for decentralized drinking water supply with improved flux stability, water quality, pollutant removal, reduced biofouling layer concentrations, and formation of highly heterogeneous structures.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Erica Gagliano, Pietro P. Falciglia, Yeakub Zaker, Tanju Karanfil, Paolo Roccaro
Summary: The study demonstrates that regeneration of PFAS-saturated granular activated carbons using microwave irradiation is highly efficient, allowing for rapid temperature increase while preserving the adsorption properties of the GAC.
Article
Engineering, Environmental
Stephanie S. Lau, Yinmei Feng, April Z. Gu, Caroline Russell, Greg Pope, William A. Mitch
Summary: This study compared the effects of granular activated carbon treatment with postchlorination and chlorination/chloramination on the total cytotoxicity of water. The results showed that GAC/Cl-2 resulted in lower total cytotoxicity than Cl-2/NH2Cl, even at high levels of organic carbon breakthrough.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Yinhui Huang, Boquan Cai, He Dong, Haoyong Li, Jie Yuan, Haiyu Xu, Hongbin Wu, Ziyao Xu, Dezhi Sun, Yan Dang, Dawn E. Holmes
Summary: Previous studies have shown that the addition of conductive materials, such as GAC immobilized with riboflavin, can enhance anaerobic digestion of food waste by stimulating direct interspecies electron transfer (DIET) between bacteria and methanogens.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Ozkan Gormez, Sema Akay, Belgin Gozmen, Berkant Kayan, Dimitrios Kalderis
Summary: The degradation of emerging contaminant coumarin was investigated using anodic, electro-Fenton, and subcritical water oxidation processes. Results showed that the anodic and electro-Fenton oxidation achieved 99% degradation of coumarin at 200 mA constant current, while subcritical water oxidation achieved the highest degradation of 88% at 200°C with 150 mM H2O2 and after 37.5 mM treatment. Time was found to have a minor positive effect on coumarin degradation, indicating that it is not the most influential parameter.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Pavankumar Challa Sasi, Ali Alinezhad, Bin Yao, Alena Kubatova, Svetlana A. Golovko, Mikhail Y. Golovko, Feng Xiao
Summary: The study demonstrates that thermal decomposition of PFCAs and GenX can occur during conventional thermal treatment, and the addition of GAC or other highly porous materials can accelerate the decomposition process and alter its pathways. The presence of GAC enhances the decomposition rate by compressing the intermediate sublimation zone of PFCAs and changing their thermal decomposition pathways.
Article
Green & Sustainable Science & Technology
Hongyou Wan, Fuzhen Wang, Yuhan Chen, Zisheng Zhao, Guangyi Zhang, Ming Dou, Binghan Xue
Summary: The study found that the addition of NFGAC can effectively promote the anaerobic digestion of azo dye RR2 wastewater, increasing organic matter removal and methane production. Analysis showed that the addition of NFGAC can improve the electron transfer system (ETS) activity during RR2 anaerobic digestion, with a possible mechanism being the increase in functional groups to enhance electron accepting and donating capacities.
Article
Engineering, Environmental
Yingdi Zhang, Lei Zhang, Huijuan Sun, Yiyang Yuan, Yang Liu
Summary: Granular activated carbon (GAC) has been found to play a significant role in improving anaerobic digestion (AD) through its conductive properties and surface functional groups. The addition of GAC stimulates the biosynthesis of extracellular microbial secretions, which act as essential nutrients and enhance COD removal and methane production in AD. Furthermore, the GAC-stimulated microbial extracellular secretions improve methane production rate without causing a significant shift in microbial community.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Multidisciplinary
A. R. Solaimany Nazar, M. B. Kurade, M. Ali Khan, B-H Jeon
Summary: This study examined the adsorption of methylparaben (MP) on Calgon carbon (F400) and Norit-type Granular Activated Carbons (GACs) under different conditions. The influence of Humic Acid (HA) on MP adsorption was evaluated. The results showed that the Freundlich model well described the adsorption isotherms. The maximum adsorption capacities for MP on F400 and Norit GACs were 150 mg/g and 100 mg/g, respectively. Additionally, HA increased the adsorption capacity of MP on F400 GAC.
Article
Environmental Sciences
Yiting Xue, Xinying Liu, Yan Dang, Tianjing Shi, Dezhi Sun
Summary: In this study, the effects of GAC and Fe-GAC on nitrogen removal rates in Anammox-DAMO process were investigated. The results showed that Fe-GAC significantly improved the total nitrogen removal rate and promoted key functional enzyme activities and changes in microbial community. This study provides a promising strategy for achieving high rate of nitrogen removal in the Anammox-DAMO process.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)