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1. Relevance of sustainable remediation to contaminated sites manage in developed and developing countries: Case of Brazil

Author:
Braun, Adeli Beatriz; Trentin, Adan William da Silva; Visentin, Caroline; Thomé, Antônio
Source:
Land use policy 2020 v.94 pp. 104533
ISSN:
0264-8377
Subject:
remediation,   etc   ; developing countries; Brazil;     Show all 3 Subjects
Abstract:
... The sustainable remediation emerged as a paradigm shift within contaminated sites management. However, this approach still has difficulties and therefore its application is quite limited. Thus, this paper aims to present and analyze the characteristics and trends of sustainable remediation approach in developed and developing countries, with an emphasis on Brazil case. Firstly, the background to s ...
DOI:
10.1016/j.landusepol.2020.104533

2. Chemically Artificial Rovers Based on Self-Propelled Droplets in Micrometer-scale Environment

Author:
Toyota, Taro; Sugiyama, Hironori; Hiroi, Soichiro; Ito, Hiroaki; Kitahata, Hiroyuki
Source:
Current opinion in colloid & interface science 2020
ISSN:
1359-0294
Subject:
remediation,   etc   ; cell movement; droplets;     Show all 3 Subjects
Abstract:
... Self-propelled droplets made of organic materials can be an influential candidate for understanding cell migration from the viewpoint of non-equilibrium physics, and have attracted significant attention with regard to soft-matter-type rovers. Since self-propelled droplets are soft enough to be easily deformed, they should be useful as chemically artificial rovers that can move in small areas with ...
DOI:
10.1016/j.cocis.2020.04.003

3. Debromination of polybrominated diphenyl ethers (PBDEs) by palladized zerovalent zinc particles: Influence factors, pathways and mechanism

Author:
Xu, Yongye; Liang, Chenghao; Zhang, Taiping; Tao, Xueqin; Wang, Rui; Huang, Kaibo; Pan, Zhaoxi; Dang, Zhi; Yin, Hua; Lu, Guining
Source:
Chemosphere 2020 v.253 pp. 126726
ISSN:
0045-6535
Subject:
remediation,   etc   ; bromination; pollution; polybrominated diphenyl ethers; zinc;     Show all 5 Subjects
Abstract:
... We synthesized a novel material, namely palladized zero-valent zinc (Pd/ZVZ), and investigated its efficiency for the degradation of polybrominated diphenyl ethers (PBDEs). The plated Pd significantly enhances the degradation rate of PBDEs by ZVZ at the optimum loading of 1% by weight. In the Pd/ZVZ system, very few lower BDEs were accumulated during the degradation of 2,2′,4,4′- tetrabromodipheny ...
DOI:
10.1016/j.chemosphere.2020.126726

4. Surfactant-enhanced aquifer remediation: Mechanisms, influences, limitations and the countermeasures

Author:
Huo, Lili; Liu, Guansheng; Yang, Xin; Ahmad, Zulfiqar; Zhong, Hua
Source:
Chemosphere 2020 v.252 pp. 126620
ISSN:
0045-6535
Subject:
remediation,   etc   ; aquifers; nonaqueous phase liquids; pollution; surfactants;     Show all 5 Subjects
Abstract:
... In recent years, surfactant-enhanced aquifer remediation (SEAR) has attracted increasing interest duo to the high efficiency of removing non-aqueous phase liquids (NAPLs) from aquifer. A thorough understanding of SEAR is necessary for its successful implementation in field remediation. This paper reviewed the SEAR technology in a comprehensive way based on the recent research advances. Firstly, an ...
DOI:
10.1016/j.chemosphere.2020.126620

5. The role of terminal groups in dendrimer systems for the treatment of organic contaminants in aqueous environments

Author:
Han, Ye-Lim; Kim, So-Yeon; Kim, Taejin; Kim, Ki-Hyun; Park, Jae-Woo
Source:
Journal of cleaner production 2020 v.250 pp. 119494
ISSN:
0959-6526
Subject:
remediation,   etc   ; chitosan; dendrimers; pollutants; water treatment;     Show all 5 Subjects
Abstract:
... A typical water treatment process consists of a physical, biological, or chemical route or a combination of these options. However, the use of conventional techniques has been challenged due to the diversification of waterborne pollutants. In response, various nanomaterials with advanced functions have been developed to provide effective remediation options. Among such materials, dendrimers have r ...
DOI:
10.1016/j.jclepro.2019.119494

6. Effect of fluid slippage on eddy growth and non-Darcian flow in rock fractures

Author:
Zhou, Jia-Qing; Wang, Lichun; Li, Changdong; Tang, Huiming; Wang, Liangqing
Source:
Journal of hydrology 2020 v.581 pp. 124440
ISSN:
0022-1694
Subject:
remediation,   etc   ; carbon sequestration; hydrology; oils; permeability; pollution;     Show all 6 Subjects
Abstract:
... Fluid flow in rock fractures is usually theoretically and numerically investigated on the premise of no-slip boundary condition (BC). However, fluid slippage at rock surface is naturally present in some circumstances that might lead to a violation of no-slip BC. How and to what extent slip BC affects non-Darcian fracture flow remains poorly constrained. This study systematically investigated the s ...
DOI:
10.1016/j.jhydrol.2019.124440

7. Analytical solution of capture time to a partially penetrating well in a semi-infinite aquifer

Author:
Xia, Qiang; Kuang, Xingxing; Zhan, Hongbin; Xu, Mo; Wang, Shiyu; Fan, Shuai
Source:
Journal of hydrology 2020 v.580 pp. 124233
ISSN:
0022-1694
Subject:
remediation,   etc   ; algorithms; anisotropy; aquifers; groundwater; models; wells;     Show all 7 Subjects
Abstract:
... Calculating the capture time of contaminant to a well is important in the context of both groundwater protection and aquifer remediation. Although partially penetrating wells are much more commonly used than fully penetrating wells, there is no analytical solution for capture time calculations, probably due to the challenges of mathematically modeling such types of wells. In this study, an analyti ...
DOI:
10.1016/j.jhydrol.2019.124233

8. Correction: Effective and sustainable Cs⁺ remediation via exchangeable sodium-ion sites in graphene oxide fibers

Author:
Lee, Heehyeon; Lee, Kyungeun; Kim, Sang Ouk; Lee, Jae-Seung; Oh, Youngtak
Source:
Journal of materials chemistry A 2019 v.7 no.44 pp. 25672
ISSN:
2050-7496
Subject:
remediation,   etc   ; cesium; graphene oxide;     Show all 3 Subjects
Abstract:
... Correction for ‘Effective and sustainable Cs⁺ remediation via exchangeable sodium-ion sites in graphene oxide fibers’ by Heehyeon Lee et al., J. Mater. Chem. A, 2019, 7, 17754–17760. ...
DOI:
10.1039/c9ta90257k

9. Supplementing resuscitation-promoting factor (Rpf) enhanced biodegradation of polychlorinated biphenyls (PCBs) by Rhodococcus biphenylivorans strain TG9T

Author:
Ye, Zhe; Li, Hongxuan; Jia, Yangyang; Fan, Jiahui; Wan, Jixing; Guo, Li; Su, Xiaomei; Zhang, Yu; Wu, Wei-Min; Shen, Chaofeng
Source:
Environmental pollution 2020 v.263 pp. 114488
ISSN:
0269-7491
Subject:
remediation,   etc   ; aroclors; bacteria; biodegradation; environmental factors; soil ecology;     Show all 6 Subjects
Abstract:
... The biodegradation of polychlorinated biphenyls (PCBs) occurs slowly when the degrading bacteria enter a low activity state, such as a viable but nonculturable (VBNC) state, under unfavorable environmental conditions. The introduction of resuscitation-promoting factor (Rpf) can re-activate VBNC bacteria. This study tested the feasibility of enhancing PCB biodegradation via supplementing Rpf in liq ...
DOI:
10.1016/j.envpol.2020.114488

10. Remediation of contaminated soil by red mud and paper ash

Author:
Oprčkal, P.; Mladenovič, A.; Zupančič, N.; Ščančar, J.; Milačič, R.; Zalar Serjun, V.
Source:
Journal of cleaner production 2020 v.256 pp. 120440
ISSN:
0959-6526
Subject:
remediation,   etc   ; additives; pH; paper; polluted soils; sorption; toxic substances; Slovenia;     Show all 8 Subjects
Abstract:
... Remediation of contaminated soil can be performed by using various techniques, which must be adequately tailored for each specific case. The aim of this research is to critically evaluate the potential use of red mud and paper ash and a combination of the two as immobilization additives for the remediation of contaminated soil from one of the most polluted sites in Slovenia. The proposed procedure ...
DOI:
10.1016/j.jclepro.2020.120440

11. Effects of co-existing nitrate on TCE removal by mZVI under different pollution load scenarios: Kinetics, electron efficiency and mechanisms

Author:
Xin, Jia; Fan, Shufen; Yuan, Mengjiao; Wang, Xiaohui; Zhang, Xuejiao; Zheng, Xilai
Source:
The Science of the total environment 2020 v.716 pp. 137111
ISSN:
0048-9697
Subject:
remediation,   etc   ; corrosion; electrons; groundwater; iron; nitrates; pollution load; trichloroethylene;     Show all 8 Subjects
Abstract:
... Microscale zero-valent iron in situ reaction zone (mZVI-IRZ) has proved to be effective and efficient for the removal of chlorinated aliphatic hydrocarbons (CAHs) from groundwater. However, nitrate (NO₃⁻), which is ubiquitous in groundwater, affects the mZVI-based attenuation of CAHs in a complicated manner. Both the reaction rate constant (k) and electron efficiency (EE) of mZVI must be considere ...
DOI:
10.1016/j.scitotenv.2020.137111

12. Critical review on the mechanistic photolytic and photocatalytic degradation of triclosan

Author:
Solá-Gutiérrez, Claudia; Schröder, Sophie; San-Román, M. Fresnedo; Ortiz, Inmaculada
Source:
Journal of environmental management 2020 v.260 pp. 110101
ISSN:
0301-4797
Subject:
remediation,   etc   ; byproducts; oxidation; personal care products; photocatalysis; photolysis; triclosan;     Show all 7 Subjects
Abstract:
... The environmentally extended presence of triclosan, TCS, component of many pharmaceutical and personal care products, and its known persistent character have awoke the scientific and social concern leading to the study of effective remediation techniques. Advanced oxidation techniques stand out for the effectiveness in degrading many persistent compounds, and as a result, they have been addressed ...
DOI:
10.1016/j.jenvman.2020.110101

13. General mechanisms for policy-making on environmental remediation at the post-closure nuclear test sites in the USA

Author:
Zheng, Jinming; Long, Bin; Xie, Fengyu
Source:
Environmental science and pollution research international 2020 v.27 no.11 pp. 11484-11493
ISSN:
0944-1344
Subject:
remediation,   etc   ; environmental governance; guidelines; issues and policy; planning; United States;     Show all 6 Subjects
Abstract:
... This paper aims to give a condensed introduction to the general mechanisms for policy-making on environmental remediation at the post-closure US contaminated nuclear sites, the accomplishment of “Clean Closure,” and the process of setting the goal “Closure in Place.” The researches were conducted in three perspectives including overall guidelines, principles of corrective actions, and implementati ...
DOI:
10.1007/s11356-020-08053-3

14. Reduction and potential remediation of U(VI) by dithionite at an in-situ recovery mine: Insights gained by δ238U

Author:
Jemison, Noah; Reimus, Paul; Harris, Rose; Boukhalfa, Hakim; Clay, James; Chamberlain, Kevin
Source:
Applied geochemistry 2020 v.115 pp. 104560
ISSN:
0883-2927
Subject:
remediation,   etc   ; chromium; dithionite; geochemistry; groundwater; mining; oxidants; reducing agents; uranium;     Show all 9 Subjects
Abstract:
... In-situ recovery is a common method of mining U ore. This technique involves injecting an oxidant to oxidize U deposited as insoluble U(IV) to soluble U(VI) and a complexing agent to form mobile U(VI) compounds, which are extracted from mining waters. Unfortunately, U concentrations often remain elevated in groundwater following this mining process. One promising technique to decrease U concentrat ...
DOI:
10.1016/j.apgeochem.2020.104560

15. Carbonaceous–TiO2 materials: unique morphologies for photocatalytic applications

Author:
Sui, Xianhang; Li, Xianhua; Ni, Ting; Lin, Fengsen; Li, Guangyou
Source:
Journal of materials science 2020 v.55 no.7 pp. 2725-2740
ISSN:
0022-2461
Subject:
remediation,   etc   ; dyes; light; nanorods; nanotubes; photocatalysis; photocatalysts; semiconductors; titanium dioxide;     Show all 9 Subjects
Abstract:
... Semiconductor photocatalysts has become one of the most attractive technologies in the field of environmental remediation. Titanium dioxide (TiO₂) is widely concerned due to the potential applications in the degradation of organic dyes. Nonetheless, the inherent wide band gap of TiO₂ has been proved to restrict the photocatalytic activation under visible light, and a variety of strategies have bee ...
DOI:
10.1007/s10853-019-04224-x

16. Effect of Fe-metabolizing bacteria and humic substances on magnetite nanoparticle reactivity towards arsenic and chromium

Author:
Sundman, Anneli; Vitzthum, Anna-Lena; Adaktylos-Surber, Konstantin; Figueroa, Adriana I.; van der Laan, Gerrit; Daus, Birgit; Kappler, Andreas; Byrne, James M.
Source:
Journal of hazardous materials 2020 v.384 pp. 121450
ISSN:
0304-3894
Subject:
remediation,   etc   ; arsenic; bacteria; chromium; humic substances; iron; magnetite; nanoparticles; oxidation;     Show all 9 Subjects
Abstract:
... Magnetite is a magnetic, Fe(II)-Fe(III)-mineral formed through abiogenic and biogenic pathways. It constitutes an attractive material for remediation due to its reactivity, large surface-area-to-volume ratio when present as nanoparticles, and magnetic recoverability. Magnetite can be repeatedly microbially oxidized or reduced, but it is unclear how this influences the reactivity of magnetite towar ...
DOI:
10.1016/j.jhazmat.2019.121450

17. Charge interactions, reaction kinetics and dimensionality effects on electrokinetic remediation: A model-based analysis

Author:
Sprocati, Riccardo; Rolle, Massimo
Source:
Journal of contaminant hydrology 2020 v.229 pp. 103567
ISSN:
0169-7722
Subject:
remediation,   etc   ; diffusivity; electrodes; electrostatic interactions; ions; porous media; reaction kinetics;     Show all 7 Subjects
Abstract:
... The potential of electrokinetic remediation technologies (EKR) for the removal of different contaminants from subsurface porous media has been increasingly recognized. Despite electrokinetic applications have shown promising results, quantitative understanding of such systems is still challenging due to the complex interplay between physical transport processes, electrostatic interactions, and geo ...
DOI:
10.1016/j.jconhyd.2019.103567

18. Combining geostatistics and simulations of flow and transport to characterize contamination within the unsaturated zone

Author:
Pannecoucke, Léa; Le Coz, Mathieu; Freulon, Xavier; de Fouquet, Chantal
Source:
The Science of the total environment 2020 v.699 pp. 134216
ISSN:
0048-9697
Subject:
remediation,   etc   ; geostatistics; groundwater; kriging; models; pollution; soil; tritiated water; tritium;     Show all 9 Subjects
Abstract:
... Characterization of contamination in soils or groundwater resulting from industrial activities is critical for site remediation. In this study, geostatistics and physically-based simulations are combined for estimating levels of contamination within the unsaturated zone. First, a large number of flow and transport simulations are run and their outputs are used to compute empirical non stationary v ...
DOI:
10.1016/j.scitotenv.2019.134216

19. The tetracyclines removal by MgAl layered double oxide in the presence of phosphate or nitrate: Behaviors and mechanism exploration

Author:
Zhang, Ping; He, Tao; Chen, Han; Li, Peng; Xiang, Mingxue; Ding, Nengshui; Deng, Shuguang
Source:
Journal of colloid and interface science 2020 v.578 pp. 124-134
ISSN:
0021-9797
Subject:
remediation,   etc   ; adsorption; anions; linear models; nitrates; phosphates; pollution; rehydration; sorption isotherms; swine; tetracyclines; wastewater;     Show all 12 Subjects
Abstract:
... Pollution of tetracyclines (TCs) in swine wastewater has been a critical concern worldwide. Notably, multiple anions (e.g. PO₄³⁻, NO₃⁻) coexist in the actual environments, which could significantly influence the TCs removal. In the current study, MgAl layered double oxide (MgAl-LDO) was adopted for investigating the TC removal performance with/without PO₄³⁻ or NO₃⁻. In all systems, the adsorption ...
DOI:
10.1016/j.jcis.2020.04.122

20. Effective passivation of lead by phosphate solubilizing bacteria capsules containing tricalcium phosphate

Author:
Zhang, Keyao; Teng, Zedong; Shao, Wen; Wang, Yin; Li, Min; Lam, Su Shiung
Source:
Journal of hazardous materials 2020 v.397 pp. 122754
ISSN:
0304-3894
Subject:
remediation,   etc   ; Leclercia adecarboxylata; bacteria; calcium chloride; lead; pH; sediment contamination; sediments; sodium alginate; solubilization; tricalcium phosphate;     Show all 11 Subjects
Abstract:
... Phosphate solubilizing bacteria (PSBs) shows high potential to be used for lead passivation in sediments due to the abilities of releasing phosphate and the subsequent formation of insoluble Pb-phosphate compounds. In this research, microbial capsules implemented with sodium alginate and CaCl₂, containing Leclercia adecarboxylata L15 (a lead resistant PSB) and Ca₃(PO₄)₂, were developed and the per ...
DOI:
10.1016/j.jhazmat.2020.122754