Results 61 to 70 of about 17,640 (250)

Comprehensive review on the use of carrier-material-supported bimetallic nanoscale zero-valent iron to enhance nitrate removal and N selectivity

Adsorption Science & Technology
Nitrate pollution originates from wastewater discharge and agricultural and industrial activities and is becoming a serious environmental problem. Current treatment methods often need help achieving high efficiency while maintaining reasonable costs ...
Huu-Khiem Nguyen, Chih-Chi Yang, Yung-Pin Tsai   +2 more
doaj   +1 more source

Transport Characteristics of Green-Tea Nano-scale Zero Valent Iron as a Function of Soil Mineralogy

Chemical Engineering Transactions, 2012
The transport characteristics of iron nanoparticles prepared with a green tea, polyphenol-rich solution, were investigated for two granular media, pure silica sand and sand coated with aluminium hydroxide. The GT-nZVI injection caused a sharp decrease in
M. Chrysochoou, M. Mcguire, G. Dahal
doaj   +1 more source

Substantially enhanced anaerobic reduction of nitrobenzene by biochar stabilized sulfide-modified nanoscale zero-valent iron: Process and mechanisms

Environment International, 2019
Nanoscale zero-valent iron (nZVI), although being increasingly used in anaerobic systems for strengthening the removal of various refractory pollutants, is limited by various inherent drawbacks, such as easy precipitation, passivation, poor mass and ...
Dejin Zhang, Jinyou Shen, Hefei Shi, Guanyong Su, Xinbai Jiang, Jiansheng Li, Xiaodong Liu, Yang Mu, Lianjun Wang   +8 more
doaj   +1 more source

The Application of Nanoscale Zero-Valent Iron Promotes Soil Remediation While Negatively Affecting Soil Microbial Biomass and Activity [PDF]

, 2019
The use of nanoscale zero-valent iron (nZVI) particles for soil remediation is gaining increased attention. However, there are concerns about the potential adverse effects of nZVI on soil microbial communities and, hence, soil quality.
Alcorta Calvo, Miren Itziar, Anza, Mikel, Epelde Sierra, Lur, Garbisu Crespo, Carlos, Salazar, Oihane   +4 more
core   +2 more sources

Mechanistic insights into adsorptive and oxidative removal of monochlorobenzene in biochar-supported nanoscale zero-valent iron/persulfate system

Chemical Engineering Journal, 2020
Nanoscale zero-valent iron (nZVI) supported on rice stalk (RS) derived biochar composite (nZVI/RS) was synthesized as persulfate (PS) activator, achieving efficient adsorptive and catalytically oxidative removal for monochlorobenzene (MCB).
Lei Yang, Yun Chen, Da Ouyang, Jingchun Yan, Linbo Qian, Lu Han, Mengfang Chen, Jing Li, Mingyue Gu   +8 more
semanticscholar   +1 more source

Erratum to: Nanoscale zero-valent iron flakes for groundwater treatment [PDF]

Environmental Earth Sciences, 2016
The original article has been published inadvertently with some errors. Corrected and supporting information is given below. 25 mL of 6 mM sodium boron hydride (NaBH4) was used for the investigations of coatings. The start concentration of iopromide solutions for the reactivity comparison of different particle batches was 2 g/ L (2.5 mmol/L).
R. Köber, H. Hollert, G. Hornbruch, M. Jekel, A. Kamptner, N. Klaas, H. Maes, K.-M. Mangold, E. Martac, A. Matheis, H. Paar, A. Schäffer, H. Schell, A. Schiwy, K. R. Schmidt, T. J. Strutz, S. Thümmler, A. Tiehm, J. Braun   +18 more
openaire   +1 more source

Enhanced nitrate reduction by HPMC-stabilized nanoscale zero-valent iron (H-NZVI): Synthesis, characterization and reaction kinetics

Desalination and Water Treatment
Nano zero-valent iron (NZVI) was successfully stabilized by using hydroxypropyl methyl cellulose (HPMC). Systematic characterization observations (including XRD, TEM, FTIR, and VSM), as well as settling performance, illustrated that, compared to bare ...
Da Ma, Xusheng Li, Huian Zou, Yi Qian, Mengqi Li, Wenchuan Xu   +5 more
doaj   +1 more source

Remediation of Chlorpyrifos-Contaminated Soils by Laboratory-Synthesized Zero-Valent Nano Iron Particles: Effect of pH and Aluminium Salts

Journal of Chemistry, 2013
Degradation of the insecticide chlorpyrifos in contaminated soils was investigated using laboratory synthesized zero-valent nano iron (ZVNI) particles. The synthesized ZVNI particles were characterized as nanoscale sized by scanning electron microscopy ...
A. Vijaya Bhaskar Reddy, V. Madhavi, K. Gangadhara Reddy, G. Madhavi   +3 more
doaj   +1 more source

Improved longevity of nanoscale zero-valent iron with a magnesium hydroxide coating shell for the removal of Cr(VI) in sand columns

Environment International, 2019
Nanoscale zero-valent iron (NZVI) has been engineered as an attractive tool for in-situ groundwater remediation. However, the poor mobility and aqueous corrosion of NZVI in the porous subsurface have hindered its practical applications. In this research,
Yi-bo Hu, Miaoyue Zhang, Xiao-yan Li
doaj   +1 more source

Transport of Non-Newtonian Suspensions of Highly Concentrated Micro- And Nanoscale Iron Particles in Porous Media: A Modeling Approach [PDF]

, 2010
The use of zerovalent iron micro- and nanoparticles (MZVI and NZVI) for groundwater remediation is hindered by colloidal instability, causing aggregation (for NZVI) and sedimentation (for MZVI) of the particles.
Sethi, Rajandrea, Tosco, Tiziana Anna Elisabetta   +1 more
core   +1 more source