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
Green & Sustainable Science & Technology
Hemant Goyal, Tanishq Tyagi, Prasenjit Mondal
Summary: This study evaluates and compares the environmental impacts of using GAC and GAC-Fe adsorbents for treating arsenic contaminated water. The results showed that chemically treated/impregnated adsorbents not only have fewer environmental emissions, but also reduce treatment costs. GAC-Fe treatment had lower environmental impacts and costs compared to GAC treatment.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Multidisciplinary Sciences
Lingfan Xu, Yu Yin, Yanjing Li, Xufeng Chen, Yan Chang, Hong Zhang, Juan Liu, James Beasley, Patricia McCaw, Haoyue Zhang, Sarah Young, Jeff Groth, Qianben Wang, Jason W. Locasale, Xia Gao, Dean G. Tang, Xuesen Dong, Yiping He, Daniel George, Hailiang Hu, Jiaoti Huang
Summary: This study identifies a metabolic mechanism in prostate cancer where a switch in glutaminase isoforms contributes to therapeutic resistance and disease progression. The expression of GAC leads to increased glutamine utilization and aggressive behavior of tumor cells in the absence of androgen, ultimately impacting treatment outcomes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
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.
Review
Environmental Sciences
Jianan Li, Luiza C. Campos, Linyang Zhang, Wenjun Xie
Summary: This paper provides an overview of the progress in removing PPCPs from water using sand filtration technology. It highlights the variability in effectiveness and discusses the main removal mechanisms, including biodegradation and adsorption. The combination of GAC and sand has been found to enhance removal, suggesting its potential applicability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Taehoon Kim, Byungryul An
Summary: This study investigated the effect of hydrogen ions on the adsorption of inorganic contaminant phosphate onto granular activated carbon (GAC). It was found that the hydrochloric acid treatment enhanced phosphate adsorption efficiency on the GAC. While there were no significant differences in the physical properties of GAC under different initial pH conditions, the adsorption efficiency and optimal pH conditions varied.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Ola Svahn, Stefan Borg
Summary: This study focuses on the 4th treatment step in Degeberga WWTP, which uses a full scale GAC filter for the removal of micropollutants. The results show that the sand filter provides effective protection to the carbon filters and biodegradation plays a role in the removal of some micropollutants. The average removal of 24 compounds over three years is 89% in the 4th treatment step. The study suggests that the combination of sand and GAC filters in WWTPs is promising for removing organic micropollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Chemistry, Medicinal
Hanyu Sun, Tingting Du, Minjian Yang, Xue Liu, Xi Xue, Kai Chen, Xuli Lang, Xiaoguang Chen, Baolian Wang, Xiaojian Wang
Summary: This study identified a potential binding subpocket of glutaminase C (GAC) and discovered promising inhibitors with robust GAC inhibitory activity and antiproliferative activity. The inhibitors were found to regulate cellular metabolites and exhibit excellent antiproliferative activity. The study also proposed new strategies for the development of novel GAC inhibitors.
ACS MEDICINAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Environmental
Conner C. Murray, Andrew Safulko, Hooman Vatankhah, Charlie J. Liu, Bahareh Tajdini, Robert E. Marshall, Christopher Bellona
Summary: The search for effective and cost-efficient adsorbents for PFAS contamination has led to the evaluation of a novel surface modified organoclay (SMC) adsorbent compared to granular activated carbon (GAC) and ion exchange resin (IX) for the treatment of different PFAS impaired waters. Results showed that IX exhibited the best performance in terms of adsorbent use rates and was more effective than GAC and SMC in treating PFOA from various water sources excluding groundwater. Cost analysis indicated that treatment of landfill leachate and membrane concentrate was more expensive than groundwaters or wastewaters.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Gulizhaer Abulikemu, Thomas F. Speth, Jeffrey A. Vogt, Maria Meyer, Ying Hong, Jonathan G. Pressman
Summary: The study demonstrates that reconstituted lyophilized NOM can be used as a surrogate for source water in GAC evaluations, especially when evaluating NOM as the constituent of interest. The study also highlights factors that may affect the evaluation results, such as changes in characteristics during GAC regeneration and grinding, and differences in chloride concentrations in water.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Plant Sciences
Thitiwan Jumpa, Diane M. Beckles, Patcharin Songsri, Kunlaya Pattanagul, Wattana Pattanagul
Summary: This study investigated the effects of salinity stress on the physiological traits and metabolites in gac seedling leaves. The results showed that different concentrations of NaCl had varying effects on the plants, including loss of membrane permeability, production of reactive oxygen species, changes in enzyme activity and metabolites. High concentrations of NaCl can promote salinity resistance through various mechanisms, including the accumulation of amino acids and osmoprotectants.
Article
Environmental Sciences
Simon Gidstedt, Alexander Betsholtz, Michael Cimbritz, Asa Davidsson, Marinette Hagman, Stina Karlsson, Maria Takman, Ola Svahn, Federico Micolucci
Summary: This study evaluated the effectiveness of chemically enhanced primary treatment (CEPT) and direct membrane filtration (DMF) in municipal wastewater treatment, as well as the removal of organic micropollutants by a granular activated carbon (GAC) filter. The results showed that CEPT with microsieving removed a significant portion of organic carbon and phosphorus, while the contribution of DMF was minimal. The GAC filter was effective in removing organic micropollutants, but membrane fouling limited its usage time. This study demonstrated the potential of using compact physicochemical processes for municipal wastewater treatment.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Environmental Sciences
Jikang Wan, Bin Yong, Xiaofeng Zhou
Summary: In this paper, an improved geodesic active contour model (IMGAC) is proposed for optimizing and extracting water boundaries from single-polarization SAR images. The results show that the IMGAC model can improve the accuracy of water boundary detection compared to other methods.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
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, Environmental
Qian Li, Xin Gao, Yaqian Liu, Gaojun Wang, Yu-You Li, Daisuke Sano, Xiaochang Wang, Rong Chen
Summary: Biochar and granular activated carbon play key roles in enhancing anaerobic phenol degradation by adsorbing dissolved phenol to shorten lag times and facilitate direct interspecies electron transfer. Biochar has a higher electron exchange capacity, which enables more efficient promotion of DIET and electron transfer.
JOURNAL OF HAZARDOUS MATERIALS
(2021)