Zero-valent iron nanoparticles in treatment of acid mine water from in situ uranium leaching

Klimkova, Stepanka; Černík, Miroslav; Lacinová, Lenka; Filip, Jan; Jančík, Dalibor; Zbořil, Radek

doi:10.1016/j.chemosphere.2010.11.075

Cited by 196 publications

(85 citation statements)

References 52 publications

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“…Among the most common nanomaterials, zero-valent iron nanoparticles (nZVI) are one of the most widely used and have proven to be extremely effective for the removal of a wide range of pollutants such as pharmaceutical products (Machado et al, 2013b), chlorinated solvents (Choe et al, 2001), metals (Klimkova et al, 2011) among others (Crane and Scott, 2012).…”

Section: Introductionmentioning

confidence: 99%

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

Machado

Pacheco

Nouws

et al. 2015

Science of The Total Environment

199

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a b s t r a c t Keywords:Zero-valent iron nanoparticles Green synthesis method Tree leaves Size Reactivity AgglomerationIn the last decades nanotechnology has become increasingly important because it offers indisputable advantages to almost every area of expertise, including environmental remediation. In this area the synthesis of highly reactive nanomaterials (e.g. zero-valent iron nanoparticles, nZVI) is gaining the attention of the scientific community, service providers and other stakeholders. The synthesis of nZVI by the recently developed green bottom-up method is extremely promising. However, the lack of information about the characteristics of the synthetized particles hinders a wider and more extensive application. This work aims to evaluate the characteristics of nZVI synthesized through the green method using leaves from different trees. Considering the requirements of a product for environmental remediation the following characteristics were studied: size, shape, reactivity and agglomeration tendency. The mulberry and pomegranate leaf extracts produced the smallest nZVIs (5-10 nm), the peach, pear and vine leaf extracts produced the most reactive nZVIs while the ones produced with passion fruit, medlar and cherry extracts did not settle at high nZVI concentrations (931 and 266 ppm). Considering all tests, the nZVIs obtained from medlar and vine leaf extracts are the ones that could present better performances in the environmental remediation. The information gathered in this paper will be useful to choose the most appropriate leaf extracts and operational conditions for the application of the green nZVIs in environmental remediation.

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Section: Introductionmentioning

confidence: 99%

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

Machado

Pacheco

Nouws

et al. 2015

Science of The Total Environment

199

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“…Nanoscale zerovalent iron (nZVI) has been extensively considered for in situ groundwater remediation [7][8][9][10] of a wide range of groundwater pollutants including chlorinated solvents [11,12], chlorinated pesticides [13], heavy metals [14][15][16], and nitrate [17][18][19]. Pb 2+ is immobilized by nZVI mainly through sorption and coprecipitation and partly by reduction [15].…”

Section: Introductionmentioning

confidence: 99%

Effects of nitrate on the treatment of lead contaminated groundwater by nanoscale zerovalent iron

Adeleye

Zhou

et al. 2014

Journal of Hazardous Materials

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“…19(6) (Kim et al, 2010;Kim et al, 2012;Kim et al, 2014;Phenrat et al, 2007;Quinn et al, 2005;Saleh et al, 2005;Sun et al, 2007). 특히, 팔라듐, 니켈 등 을 이용한 반응성의 향상 (Johnson et al, 2009;Zhang et al, 2006)과 PAA(polyacrylic acid), CMC(carboxymethyl cellulose) 등의 고분자전해질 및 계면활성제 코팅 을 이용한 이동성의 증진에 관한 연구 (He et al, 2007;Jiemvarangkul et al, 2011;Klimkova et al, 2011;Saleh et al, 2008)가 최근 20년간 중점적으로 수행되었 다. 그 결과 표면개질을 통해 상업용 NZVI가 제조되었고 기술의 상용화가 이루어져 실제 오염현장의 복원에 다수 적용되고 있다 (Elliott and Zhang, 2001;Hara et al, 2006;Wei et al, 2010).…”

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Field Study on Application of Reactive Zone Technology Using Zero-Valent Iron Nanoparticles for Remediation of TCE-Contaminated Groundwater

Ahn¹,

Kim²,

Hwang

et al. 2014

Journal of Soil and Groundwater Environment

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The laboratory and field studies were conducted to identify an optimal injection concentration of nanoscale zero-valent iron particles (NZVI) and to evaluate the applicability of NZVI-based reactive zone technology to the site contaminated with trichloroethylene (TCE) DNAPL (Dense Non-Aqueous Phase Liquid). The laboratory test found an optimal injection concentration of NZVI of 5 g/L that could remove more than 95% of 0.15 mM TCE within 20 days. Eleven test wells were installed at the aquifer that was mainly composed of alluvial and weathered soils at a strong oxic condition with dissolved oxygen concentration of 3.50 mg/L and oxidation-reduction potential of 301 mV. NZVI of total 30 kg were successfully injected using a centrifugal pump. After 60 days from the NZVI injection, 86.2% of the TCE initially present in the groundwater was removed and the mass of TCE removed was 405 g. Nonchlorinated products such as ethane and ethene were detected in the groundwater samples. Based on the increased chloride ion concentration at the site, the mass of TCE removed was estimated to be 1.52 kg. This implied the presence of DNAPL TCE which contributed to a higher estimate of TCE removal than that based on the TCE concentration change.

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Zero-valent iron nanoparticles in treatment of acid mine water from in situ uranium leaching

Cited by 196 publications

References 52 publications

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts

Effects of nitrate on the treatment of lead contaminated groundwater by nanoscale zerovalent iron

Field Study on Application of Reactive Zone Technology Using Zero-Valent Iron Nanoparticles for Remediation of TCE-Contaminated Groundwater

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