keyword
MENU ▼
Read by QxMD icon Read
search

soil remediation

keyword
https://www.readbyqxmd.com/read/28229194/screening-level-assessment-of-metal-concentrations-in-streambed-sediments-and-floodplain-soils-within-the-grand-lake-watershed-in-northeastern-oklahoma-usa
#1
Ean M Garvin, Cas F Bridge, Meredith S Garvin
Metal releases have been received by the Grand Lake watershed from the Tri-State Mining District (TSMD) since the mid 1800s. To address data gaps in metal distributions in the Oklahoma portion of the watershed, streambed sediment and floodplain soil was sampled on various streams. The <63-µm fraction was analyzed for Cd, Pb, and Zn concentrations by portable X-ray fluorescence spectroscopy and inductively coupled plasma-mass spectrometry. Mean metal concentration results at reference transects indicated that background sediment/soil concentrations for Cd, Pb, and Zn within the watershed were 0...
February 22, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28224176/soil-and-groundwater-contamination-and-remediation
#2
EDITORIAL
I Panagiotakis, D Dermatas
No abstract text is available yet for this article.
February 21, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28219052/rapid-degradation-of-2-4-dichlorophenoxyacetic-acid-facilitated-by-acetate-under-methanogenic-condition
#3
Zhiman Yang, Xiaohui Xu, Meng Dai, Lin Wang, Xiaoshuang Shi, Rongbo Guo
Acetate can be used as an electron donor to stimulate 2,4-dichlorophenoxyacetic acid (2,4-D), which has not been determined under methanogenic condition. This study applied high-throughput sequencing and methanogenic inhibition approaches to investigate the 2,4-D degradation process using the enrichments obtained from paddy soil. Acetate addition significantly promoted 2,4-D degradation, which was 5-fold higher than in the acetate-unsupplemented enrichments in terms of the 2,4-D degradation rate constant. Dechloromonas and Pseudomonas were the dominant 2,4-D degraders...
February 11, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28214191/potential-of-different-am-fungi-native-from-as-contaminated-and-uncontaminated-soils-for-supporting-leucaena-leucocephala-growth-in-as-contaminated-soil
#4
Jerusa Schneider, Jochen Bundschuh, Wesley de Melo Rangel, Luiz Roberto Guimarães Guilherme
Arbuscular mycorrhizal (AM) fungi inoculation is considered a potential biotechnological tool for an eco-friendly remediation of hazardous contaminants. However, the mechanisms explaining how AM fungi attenuate the phytotoxicity of metal(oid)s, in particular arsenic (As), are still not fully understood. The influence of As on plant growth and the antioxidant system was studied in Leucaena leucocephala plants inoculated with different isolates of AM fungi and exposed to increasing concentrations of As (0, 35, and 75 mg dm(-3)) in a Typic Quartzipsamment soil...
February 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28214125/advanced-technologies-for-the-remediation-of-pesticide-contaminated-soils
#5
REVIEW
E Morillo, J Villaverde
The occurrence of pesticides in soil has become a highly significant environmental problem, which has been increased by the vast use of pesticides worldwide and the absence of remediation technologies that have been tested at full-scale. The aim of this review is to give an overview on technologies really studied and/or developed during the last years for remediation of soils contaminated by pesticides. Depending on the nature of the decontamination process, these techniques have been included into three categories: containment-immobilization, separation or destruction...
February 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28214111/remediation-of-contaminated-lands-in-the-niger-delta-nigeria-prospects-and-challenges
#6
REVIEW
Nenibarini Zabbey, Kabari Sam, Adaugo Trinitas Onyebuchi
Contamination of the total environment (air, soil, water and biota) by crude oil has become a paramount interest in the Niger Delta region of Nigeria. Studies have revealed variable impacts of oil toxicity on the environment and exposed populations. The revelation gained much international attention in 2011 with the release of Environmental Assessment of Ogoniland report by the United Nations Environment Programme (UNEP). This has up scaled local and international pressures for urgent clean-up and restoration of degraded bio-resource rich environments of the Niger Delta, starting from Ogoniland...
February 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28213721/effect-of-chemical-amendments-on-remediation-of-potentially-toxic-trace-elements-ptes-and-soil-quality-improvement-in-paddy-fields
#7
Sung Chul Kim, Young Kyu Hong, Se Jin Oh, Seung Min Oh, Sang Phil Lee, Do Hyung Kim, Jae E Yang
Remediation of potentially toxic trace elements (PTEs) in paddy fields is fundamental for crop safety. In situ application of chemical amendments has been widely adapted because of its cost-effectiveness and environmental safety. The main purpose of this research was to (1) evaluate the reduction in dissolved concentrations of cadmium (Cd) and arsenic (As) with the application of chemical amendments and (2) monitor microbial activity in the soil to determine the remediation efficiency. Three different chemical amendments, lime stone, steel slag, and acid mine drainage sludge, were applied to paddy fields, and rice (Oryza sativa L...
February 17, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28211339/phytoextraction-of-contaminated-urban-soils-by-panicum-virgatum-l-enhanced-with-application-of-a-plant-growth-regulator-bap-and-citric-acid
#8
Matthew Aderholt, Dale L Vogelien, Marina Koether, Sigurdur Greipsson
Lead (Pb) contamination in soil represents a threat to human health. Phytoextraction has gained attention as a potential alternative to traditional remediation methods because of lower cost and minimal soil disruption. The North American native switchgrass (Panicum virgatum L.) was targeted due to its ability to produce high biomass and grow across a variety of ecozones. In this study switchgrass was chemically enhanced with applications of the soil-fungicide benomyl, chelates (EDTA and citric acid), and PGR to optimize phytoextraction of Pb and zinc (Zn) from contaminated urban soils in Atlanta, GA...
February 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28210952/two-dechlorinated-chlordecone-derivatives-formed-by-in-situ-chemical-reduction-are-devoid-of-genotoxicity-and-mutagenicity-and-have-lower-proangiogenic-properties-compared-to-the-parent-compound
#9
Samuel Legeay, Pierre-André Billat, Nicolas Clere, Fabrice Nesslany, Sébastien Bristeau, Sébastien Faure, Christophe Mouvet
Chlordecone (CLD) is a chlorinated hydrocarbon insecticide, now classified as a persistent organic pollutant. Several studies have previously reported that chronic exposure to CLD leads to hepatotoxicity, neurotoxicity, raises early child development and pregnancy complications, and increases the risk of liver and prostate cancer. In situ chemical reduction (ISCR) has been identified as a possible way for the remediation of soils contaminated by CLD. In the present study, the objectives were (i) to evaluate the genotoxicity and the mutagenicity of two CLD metabolites formed by ISCR, CLD-5a-hydro, or CLD-5-hydro (5a- or 5- according to CAS nomenclature; CLD-1Cl) and tri-hydroCLD (CLD-3Cl), and (ii) to explore the angiogenic properties of these molecules...
February 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28208114/efficient-degradation-of-chlorimuron-ethyl-by-a-bacterial-consortium-and-shifts-in-the-aboriginal-microorganism-community-during-the-bioremediation-of-contaminated-soil
#10
Chunyan Li, Tongyang Lv, Wanjun Liu, Hailian Zang, Yi Cheng, Dapeng Li
Excessive application of chlorimuron-ethyl has led to soil contamination and limited crop rotation; therefore, tactics to decrease and eliminate residual chlorimuron-ethyl in the environment have attracted increasing attention. In this study, two chlorimuron-ethyl-degrading bacterial strains (Rhodococcus sp. D310-1; Enterobacter sp. D310-5) were used to ferment and prepare a chlorimuron-ethyl-degrading bacterial consortium. To improve the degradation efficiency of the bacterial consortium, the cultivation conditions were optimized using response surface methodology (RSM)...
February 13, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28208088/mechanisms-of-cd-and-cr-removal-and-tolerance-by-macrofungus-pleurotus-ostreatus-hau-2
#11
Xuanzhen Li, Youjing Wang, Yanshuo Pan, Hao Yu, Xiaolin Zhang, Yanping Shen, Shuai Jiao, Kun Wu, Guixiao La, Yuan Yuan, Shimin Zhang
Fungi bioaccumulation is a novel and highly promising approach to remediate polluted soil. The present study revealed a high ability to tolerate Cd and Cr in the fungus Pleurotus ostreatus HAU-2. However, high concentrations of Cd and Cr can suppress fungal growth and result in a variation of hypha micromorphology. Batch experiments were performed to investigate Cd and Cr stress effects on the amount of active oxygen in fungi, activity of antioxidant enzyme, as well as the removal efficiency of Cd and Cr. The results revealed that Cd and Cr caused increasing active oxygen and malonaldehyde (MDA) concentrations...
January 26, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28199876/the-effect-of-sewage-sludge-application-on-soil-properties-and-willow-salix-sp-cultivation
#12
Magdalena Urbaniak, Anna Wyrwicka, Wojciech Tołoczko, Liliana Serwecińska, Marek Zieliński
The aim of the study was to determine the impact of sewage sludge from three wastewater treatment plants of different sizes (small, medium and large) applied in two doses (3 and 9 tons per hectare) on soil properties, determined as the content of organic carbon and humus fractions, bacterial abundance, phytotoxicity and PCDD/PCDF TEQ concentrations. The study also evaluated the impact of this sewage sludge on the biometric and physiological parameters and detoxification reaction of willow (Salix sp.) as a typical crop used for the remediation of soil following sludge application...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28196719/bacterial-community-shift-and-hydrocarbon-transformation-during-bioremediation-of-short-term-petroleum-contaminated-soil
#13
Manli Wu, Xiqiong Ye, Kaili Chen, Wei Li, Jing Yuan, Xin Jiang
A laboratory study was conducted to evaluate the impact of bioaugmentation plus biostimulation (BR, added both nutrients and bacterial consortia), and natural attenuation (NA) on hydrocarbon degradation efficiency and microflora characterization during remediation of a freshly contaminated soil. After 112 days of remediation, the initial level of total petroleum hydrocarbon (TPH) (61,000 mg/kg soil) was reduced by 4.5% and 5.0% in the NA and BR treatments, respectively. Bioremediation did not significantly enhance TPH biodegradation compared to natural attenuation...
February 10, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28195498/quantitative-imaging-of-ozone-vapor-using-photofragmentation-laser-induced-fluorescence-lif
#14
Kajsa Larsson, Dina Hot, Andreas Ehn, Andreas Lantz, Wubin Weng, Marcus Aldén, Joakim Bood
In the present work, the spectral properties of gaseous ozone (O3) have been investigated aiming to perform quantitative concentration imaging of ozone by using a single laser pulse at 248 nm from a KrF excimer laser. The O3 molecule is first photodissociated by the laser pulse into two fragments, O and O2. Then the same laser pulse electronically excites the O2 fragment, which is vibrationally hot, whereupon fluorescence is emitted. The fluorescence intensity is found to be proportional to the concentration of ozone...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28191616/removal-of-pb-zn-and-cd-from-contaminated-soil-by-new-washing-agent-from-plant-material
#15
Yaru Cao, Shirong Zhang, Guiyin Wang, Qinling Huang, Ting Li, Xiaoxun Xu
Soil washing is an effective approach to remove soil heavy metals, and the washing agent is generally regarded as one of the primary factors in the process, but there is still a lack of efficient and eco-friendly agents for this technique. Here, we showed that four plant washing agents-from water extracts of Coriaria nepalensis (CN), Clematis brevicaudata (CB), Pistacia weinmannifolia (PW), and Ricinus communis (RC)-could be feasible agents for the removal of soil lead (Pb), zinc (Zn), and cadmium (Cd). The metal removal efficiencies of the agents increased with their concentrations from 20 to 80 g L(-1), decreased with the increasing solution pH, and presented different trends with the reaction time increasing...
February 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28190571/comparing-different-commercial-zero-valent-iron-nanoparticles-to-immobilize-as-and-hg-in-brownfield-soil
#16
M Gil-Díaz, J Alonso, E Rodríguez-Valdés, J R Gallego, M C Lobo
Nanoscale zero valent iron (nZVI) particles obtained by different methods differ in their structure, which lead to different reactivity, and therefore a likely difference in the remediation efficiency. The present study compares the effectiveness of three commercial ZVI nanoparticles to immobilize As and Hg in two soils (A and B) collected from a brownfield highly contaminated by mining and metallurgy activities. Scarce data are available on the effectiveness of nZVI for Hg immobilization in soil. Two commercial nZVI slurries from Toda (RNIP and RNIP-D) and one from Nano Iron (25S) were used at different doses (1, 5 and 10%)...
February 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28187392/reductive-immobilization-of-pertechnetate-in-soil-and-groundwater-using-synthetic-pyrite-nanoparticles
#17
Lijuan Huo, Wenbo Xie, Tianwei Qian, Xiaohong Guan, Dongye Zhao
Radioactive technetium ((99)Tc) is of intense concern because of its toxicity and high mobility in the environment. Reduction of Tc(VII) to Tc(IV) decreases the mobility and availability of technetium in soil and groundwater. In this study, pyrite nanoparticles (FeS2) were synthesized, characterized and tested for immobilizing/removing (99)Tc(VII) in soil and groundwater through batch and column experiments. Influences of particle dosage, dissolved organic matter (DOM), and pH on the reductive immobilization kinetics were examined...
February 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28187388/sustainability-likelihood-of-remediation-options-for-metal-contaminated-soil-sediment
#18
Season S Chen, Jessica S Taylor, Kitae Baek, Eakalak Khan, Daniel C W Tsang, Yong Sik Ok
Multi-criteria analysis and detailed impact analysis were carried out to assess the sustainability of four remedial alternatives for metal-contaminated soil/sediment at former timber treatment sites and harbour sediment with different scales. The sustainability was evaluated in the aspects of human health and safety, environment, stakeholder concern, and land use, under four different scenarios with varying weighting factors. The Monte Carlo simulation was performed to reveal the likelihood of accomplishing sustainable remediation with different treatment options at different sites...
February 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/28187387/permeable-bio-reactive-barriers-to-address-petroleum-hydrocarbon-contamination-at-subantarctic-macquarie-island
#19
Benjamin L Freidman, Deborah Terry, Dan Wilkins, Tim Spedding, Sally L Gras, Ian Snape, Geoffrey W Stevens, Kathryn A Mumford
A reliance on diesel generated power and a history of imperfect fuel management have created a legacy of petroleum hydrocarbon contamination at subantarctic Macquarie Island. Increasing environmental awareness and advances in contaminant characterisation and remediation technology have fostered an impetus to reduce the environmental risk associated with legacy sites. A funnel and gate permeable bio-reactive barrier (PRB) was installed in 2014 to address the migration of Special Antarctic Blend diesel from a spill that occurred in 2002, as well as older spills and residual contaminants in the soil at the Main Power House...
January 30, 2017: Chemosphere
https://www.readbyqxmd.com/read/28185099/microbial-arsenite-oxidation-with-oxygen-nitrate-or-an-electrode-as-the-sole-electron-acceptor
#20
Van Khanh Nguyen, Huong T Tran, Younghyun Park, Jaecheul Yu, Taeho Lee
The purpose of this study was to identify bacteria that can perform As(III) oxidation for environmental bioremediation. Two bacterial strains, named JHS3 and JHW3, which can autotrophically oxidize As(III)-As(V) with oxygen as an electron acceptor, were isolated from soil and water samples collected in the vicinity of an arsenic-contaminated site. According to 16S ribosomal RNA sequence analysis, both strains belong to the ɤ-Proteobacteria class and share 99% sequence identity with previously described strains...
February 9, 2017: Journal of Industrial Microbiology & Biotechnology
keyword
keyword
104650
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"