Results 201 to 210 of about 20,688 (263)

Field-Scale Transport and Transformation of Carboxymethylcellulose-Stabilized Nano Zero-Valent Iron

Environmental Science & Technology, 2013
The fate of nano zerovalent iron (nZVI) during subsurface injection was examined using carboxymethylcellulose (CMC) stabilized nZVI in a very large three-dimensional physical model aquifer with detailed monitoring using multiple, complementary detection methods.
Richard L, Johnson, James T, Nurmi, Graham S, O'Brien Johnson, Dimin, Fan, Reid L, O'Brien Johnson, Zhenqing, Shi, Alexandra J, Salter-Blanc, Paul G, Tratnyek, Gregory V, Lowry   +8 more
openaire   +2 more sources

Effects of Nano Zero-Valent Iron on Klebsiella oxytoca and Stress Response

Microbial Ecology, 2013
Nano zero-valent iron (NZVI) is a new option for contaminated soil and groundwater treatment, despite little is known on their impact on environmental microorganisms. Klebsiella oxytoca K5 strain, isolated from the NZVI-treated soil, was used to investigate the bacterial, phenotypical and molecular response to commercial NZVI exposure.
Maria Ludovica, Saccà, Carmen, Fajardo, Mar, Nande, Margarita, Martín   +3 more
openaire   +2 more sources

Efficient U(VI) removal by Ti3C2Tx nanosheets modified with sulfidated nano zero-valent iron: Batch experiments, mechanism, and biotoxicity assessment.

Journal of Environmental Science
The MXenes, a new class of two-dimensional layered materials, have found extensive applications in water treatment for its excellent thermal stability, electrical conductivity, and excellent adsorption ability.
Liping Liang, Mengfan Zhou, F. Xi, Chaoqi Bai, Shenghua Wang, Shuyun Luo, Jingqi Liu, Yangyang Hu, Yuxuan Zeng, Wangliang Yang, Baowei Hu   +10 more
semanticscholar   +1 more source

DECHLORINATION OF CHLORINATED HYDROCARBONS BY ZERO-VALENT IRON NANO-PARTICLES

2007
Nano-particle zero-valent iron has been used for several years by Golder Associates in the United States to reduce chlorinated hydrocarbons. Its first application (in the form of a pilot test) in Europe was successfully performed at a large industrial facility in the Czech Republic.
M. PUPEZA, M. CERNIK, M. GRECO
openaire   +1 more source

Transport of polymer stabilized nano-scale zero-valent iron in porous media

Journal of Contaminant Hydrology, 2018
This study presents a set of laboratory-scale transport experiments and numerical simulations evaluating carboxymethyl cellulose (CMC) polymer stabilized nano-scale zero-valent iron (nZVI) transport. The experiments, performed in a glass-walled two-dimensional (2D) porous medium system, were conducted to identify the effects of water specific discharge
Pulin K, Mondal, Paul D, Furbacher, Ziteng, Cui, Magdalena M, Krol, Brent E, Sleep   +4 more
openaire   +2 more sources

Sodium salt promoted the generation of nano zero valent iron by carbothermal reduction: For activating peroxydisulfate to degrade antibiotic.

Bioresource Technology
Carbothermal reduction is a promising method for the industrial preparation of nano-zero-valent iron. Preparing it also involves very high pyrolysis temperatures, which leads to a significant amount of energy consumption. The temperature required for the
Chen-ying Xue, Yifu Peng, Bin Zheng, Zhanqiang Fang, Yanan Wang, Yuchen Yi   +5 more
semanticscholar   +1 more source

Electro-osmotic transport of nano zero-valent iron in Boom Clay

Electrochimica Acta, 2014
One of the many problems that impede the successful remediation of soil and groundwater contaminated with chlorinated hydrocarbons occurs when pollutants diffuse into low permeability zones, and become difficultly accessible. Remediation by reductive dechlorination using nanoscale zero-valent iron (nZVI) is possible, but its delivery into contaminated ...
Rosales, E., Loch, J.P.G., Dias-Ferreira, C.   +2 more
openaire   +3 more sources

Nano-Zero-Valent Iron: An Emerging Technology for Contaminated Site Remediation

Geo-Congress 2014 Technical Papers, 2014
Soil contamination is by definition a very complex and expensive problem to solve, because a three-phase medium is contaminated by chemicals, commonly as mixtures, which not only interact together but also with each phase of the soil concurrently. Although pump-and-treat, monitored natural attenuation, and vertical engineered barriers are the most ...
Thanasis Mpouras, Iraklis Panagiotakis, Dimitris Dermatas, Maria Chrysochoou   +3 more
openaire   +1 more source

A critical review of nitrate reduction by nano zero-valent iron-based composites for enhancing N2 selectivity.

Dalton Transactions
Due to the highly reductive capacity of nano zero-valent iron (nZVI) nanoparticles, the reduction of nitrate (NO3--N) is prone to produce ammonia nitrogen (NH4+-N) as a by-product and has low selectivity for nitrogen gas (N2). Water and dissolved oxygen (
Yanyan Pei, Junlan Chen, Wei Cheng, Wenzhong Huang, Renyu Liu, Zhuwu Jiang   +5 more
semanticscholar   +1 more source

Toxicity Evaluation of Nano-Zero Valent Iron to Soil Indigenous Microorganisms

2018
The objective of this study was to evaluate the toxicity of nZVI to the indigenous microorganisms of the soil. The toxicity of nZVI was assessed by the CO2 production for the soil native microorganisms. Different concentrations of nZVI were added to the soil (0, 4, 15 and 50 g/kg) for further analysis of the microbiological activity.
Iziquiel Cecchin, Eloisa Fernanda Tessaro, Cleomar Reginatto, Antonio Thome, Krishna R. Reddy   +4 more
openaire   +1 more source