Article
Engineering, Environmental
Ying Chen, Weiquan Li, Huaitian Bu, Weizhao Yin, Ping Li, Zhanqiang Fang, Jinhua Wu
Summary: In this study, an integrated system of Fe-0 and hydrogenotrophic microbes mediated by nitrate (NMB-Fe-0) was established to remediate Cd(II)-contaminated sediment. The results showed that the system successfully immobilized and enriched Cd(II)(aq) on iron surface through the promotion of iron corrosion and increased biomineral production. The Cd(II)(aq) removal rate in the NMB-Fe-0 system was much higher compared to the NM-Fe-0 system, and the leachability of Cd(II) decreased significantly while the residual fraction increased.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Huiping Tang, Wencai Cheng, Yunpeng Yi, Congcong Ding, Xiaoqin Nie
Summary: Fe-0/APTES-GO composites show promising results in removing U(VI) due to the reducing activity of Fe-0 and abundant functional groups on the composites. Batch experiments demonstrate the effective removal of uranium by Fe-0/APTES-GO composites.
Article
Chemistry, Physical
Sameena Naaz Malik, Rena, Sunil Kumar
Summary: This study found that adding optimized particle size nZVI and nIO can significantly improve the fermentative biohydrogen production rate and yield from molasses-based distillery wastewater, and also has a significant promoting effect on COD reduction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Mian Fawaz Ahmed, Muhammad Asad Abbas, Azhar Mahmood, Nasir M. Ahmad, Hifza Rasheed, Muhammad Abdul Qadir, Asad Ullah Khan, Hazim Qiblawey, Shenmin Zhu, Rehan Sadiq, Niaz Ali Khan
Summary: Contaminated water with highly hazardous metals like arsenic poses a major challenge for humanity, hybrid beads synthesized with various concentrations of zero valent iron oxide nanoparticles impregnated into a polymer of chitosan show efficient removal of arsenic through adsorption and reduction processes. These novel beads of FeCh-40 are potent candidates for the treatment of water polluted with toxic arsenic metals.
Article
Engineering, Environmental
Yujie Xie, Miaoyue Zhang, Lihang Ma, Ting Du, Dan Zhou, Ming-Lai Fu, Baoling Yuan, Xiao-yan Li, Yi-bo Hu
Summary: The interaction between groundwater matrices and nanoscale zero-valent iron (NZVI) affects the mobility of NZVI. In this study, polyacrylic acid-stabilized NZVI and Mg(OH)2-coated NZVI were investigated as representative stabilizers for NZVI. The presence of divalent cations and humic acid induced aggregation and sedimentation of NZVI-PAA, while encountered groundwater electrolytes could not effectively provide electrostatic repulsion. However, sonication of the NZVI slurry with groundwater eliminated the sedimentation behavior. In comparison, the settling behavior of NZVI@Mg(OH)2 was hindered, and it exhibited higher mobility after adsorption sites of the sand surface were exhausted.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jakkapop Phanthasri, Dickson Yuk-Shing Yan, Kitirote Wantala, Rattabal Khunphonoi, Pummarin Khamdahsag, Visanu Tanboonchuy
Summary: Excessive levels of selenium in water are mainly caused by fossil fuels combustion, coal-fired power plant activity, and mining operations. Selenium contamination poses significant risks to human health. Zeolite-supported nanoscale zero-valent iron coated onto bentonite-zeolite pellets has shown promising potential for the removal of selenium in contaminated water.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Zishen Lin, Chunli Zheng, Jieling Ren, Aibin Zhu, Chi He, Hua Pan
Summary: Sulfidated zero-valent iron (SZVI) samples were synthesized using different sulfur precursors, resulting in increased surface area and hydrophobicity. SZVI-Na2S showed the highest specific surface area and optimal hydrophobicity. Sulfidation also improved the corrosion potential and Fe0 content of SZVI. In terms of Cr(VI) removal, SZVI-Na2S exhibited the highest efficiency through enhanced adsorption, rapid reduction, and precipitation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Cheryl S. Y. Yeap, Nhung H. A. Nguyen, Roman Spanek, Chin Chin Too, Vladimir Benes, Jan Provaznik, Miroslav Cernik, Alena Sevcu
Summary: Research has shown that nanoscale zero-valent iron (nZVI) used to remediate polluted aquifers can cause stress to bacteria. This study aimed to investigate the physiological and transcriptomic response of the bacterium Pseudomonas putida NCTC 10936 to nZVI and dissolved iron obtained from nZVI suspension. The results revealed that dissolved iron had a stronger physiological effect than nZVI, activating genes related to oxidative stress responses, antioxidant activity, and metabolism, while downregulating genes associated with sensing external stimuli. Despite the stress caused by dissolved iron, cell viability was not affected.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Cancan Qian, Jian Wu, Haodong Wang, Desong Yang, Jianghu Cui
Summary: nZVI treatment resulted in decreased soil pH value, redox potential, and Fe (II) content. It also significantly decreased the relative abundance of certain microbial communities related to carbon and nitrogen cycles. Additionally, nZVI treatment led to reduced grain yield and decreased protein content and essential nutrient levels in a dose-dependent manner. The metabolomics results indicated that nZVI interfered with the expression of lysine and glutathione by regulating antioxidant and protein synthesis pathways in rice.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Jingjing Zhan, Xinqi Yang, Xiujuan Zhang, Yuxin Wang, Xiyun Cai, Hongkun Chen
Summary: A biological precipitation method was developed to prepare S-nZVI with the in situ formation of ferrous disulfide on the surface of nZVI by sulfate-reducing bacteria. The obtained BP-S-nZVI particles showed excellent performance in TCE degradation without the need for harmful chemical sulfidating agents, making the preparation process more environmentally friendly.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Dandan Dong, Oh Kyung Choi, Jae Woo Lee
Summary: Both zero valent iron (ZVI) and nano-scaled ZVI (nZVI) can be used for biomethanation of CO2 under anaerobic conditions, but ZVI shows more effective and stable CO2 conversion with less loss.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Anju Rose P. Puthukkara, Sunil T. Jose, Dinoop S. Lal
Summary: The article discusses the green strategy of plant-mediated synthesis of ZVI nanoparticles, along with the related stabilization methods and application scope, with a focus on the research of phytogenic ZVI nanoparticles for water pollution remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
A. Cordova-Lizama, C. Carrera-Figueiras, A. Palacios, P. M. Castro-Olivera, J. Ruiz-Espinoza
Summary: This study investigates the effects of zero valent iron nanoparticles (NZVI) and cobalt (CoNP) on hydrogen production from anaerobic digestion of waste activated sludge. The results show that the addition of NZVI and CoNP can significantly increase hydrogen yield and promote the anaerobic digestion process of waste activated sludge.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Veronica A. Okello, Isaac O. K'Owino, Kevin Masika, Victor O. Shikuku
Summary: Paraoxon, a commonly used pesticide and drug, can contaminate soil and water. Zero valent iron nanoparticles were found to effectively degrade Paraoxon, with degradation efficiency influenced by solution pH, initial pollutant concentration, nanoparticle dosage, and contact time.
Article
Engineering, Chemical
Ncobile Bagezile Mdlovu, Kuen-Song Lin, Meng-Tzu Weng, Ndumiso Vukile Mdlovu
Summary: The study aimed to synthesize nanocarriers for doxorubicin delivery in liver cancer treatment, overcoming the limitations of chemotherapy. The results demonstrated high biocompatibility and significant reduction in cancer cell viability upon drug conjugation, with additional decrease observed when exposed to an external magnetic field.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Pharmacology & Pharmacy
Silvia Zarate Munoz, Roman Zhadan, Edgar Acosta
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2017)
Article
Chemistry, Applied
Francis Choi, Silvia Zarate-Munoz, Edgar J. Acosta
JOURNAL OF SURFACTANTS AND DETERGENTS
(2019)
Article
Chemistry, Applied
Americo Boza Troncoso, Edgar Acosta
JOURNAL OF SURFACTANTS AND DETERGENTS
(2019)
Article
Chemistry, Multidisciplinary
Sachin Goel, Niyati Joshi, Muhammad Siraj Uddin, Samson Ng, Edgar Acosta, Arun Ramachandran
Article
Chemistry, Multidisciplinary
Amir Ghayour, Edgar Acosta
Article
Chemistry, Multidisciplinary
Francis Choi, Ghata Nirmal, Monica Pizzardi, Edgar J. Acosta
Article
Chemistry, Applied
Aurelio Stammitti, Ashutosh Bhanot, Americo Boza, Samson Ng, Edgar Acosta
JOURNAL OF SURFACTANTS AND DETERGENTS
(2020)
Correction
Chemistry, Multidisciplinary
Amir Ghayour, Edgar Acosta
Article
Energy & Fuels
Aurelio Stammitti-Scarpone, Suniya Quraishi, Ashutosh Bhanot, Americo Boza, Samson Ng, Edgar Acosta
Article
Chemistry, Applied
Edgar Acosta, Sanja Natali
Summary: The effect of ethylene oxide number polydispersity on the phase behavior of alkyl ethoxylates was studied in this work, with a bifunctional model considering the dual nature of polar oils. This model predicts the sigma term versus surfactant concentration for a given water/oil ratio based on the EON distribution of the surfactant, providing insight into hydrophobicity assessment in surfactant formulations.
JOURNAL OF SURFACTANTS AND DETERGENTS
(2022)
Article
Chemistry, Multidisciplinary
Opeyemi J. Ajogbeje, Aurelio Stammitti-Scarpone, Shuwen Cao, Tolbert Akanni, Samson Ng, Edgar J. Acosta
Summary: The study used a filter-coalescer to improve the separation efficiency of water in diluted bitumen emulsions. The new RTCP framework successfully predicted emulsion filtration and filter-coalescer operation.
Article
Energy & Fuels
Amir Ghayour, Rafael Perez-Franco, Sujit Bhattacharya, Edgar Acosta
Summary: Emulsions of water in bitumen are highly stable, which affects the water removal process in bitumen extraction. Previous studies have used the hydrophilic-lipophilic difference (HLD) framework to reduce emulsion stability, but the HLD of bitumen emulsions remains unclear. This study investigates the role of polar oils, specifically asphaltenes and naphthenic acids, in HLD and finds that naphthenic acids and their dissociation dominate the phase behavior of bitumen emulsions.
Article
Chemistry, Applied
Zhuotao Leng, Edgar Acosta
Summary: This study tested the validity of the curvature interpretation of the HLD and the Cc concept for single ionic surfactants and proposed a method to assess Cc without the use of reference surfactants or alcohols.
JOURNAL OF SURFACTANTS AND DETERGENTS
(2023)
Letter
Chemistry, Applied
Edgar Acosta, Javen Weston
JOURNAL OF SURFACTANTS AND DETERGENTS
(2023)
Article
Chemistry, Physical
Francis Choi, Edgar J. Acosta