The Impact Assessment of Heavy Metal Contaminated Soil Environment and Exploration of Remediation Methods

2020 ◽  
Keyword(s):  
Heavy Metal ◽  
Impact Assessment ◽  
Contaminated Soil ◽  
Soil Environment ◽  
The Impact

Research Progress in Enhancement Technology of Phytoremediation

2015 ◽  
Vol 768 ◽  
pp. 150-154
Author(s):  
Yi Yun Liu ◽  
Shuang Cui ◽  
Qing Han ◽  
Qian Ru Zhang
Keyword(s):  
Heavy Metal ◽  
Food Chain ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
New Technology ◽  
Research Progress ◽  
Agricultural Activity ◽  
Practical Application ◽  
Soil Environment ◽  
Article Analysis

Due to the influence of human, industrial and agricultural activity, a large amount of toxic and harmful heavy metal enter into the soil environment. Heavy metal can easily bio-accumulate through food chain, which cause serious damage to human health. Phytoremediation emerges as a new technology in exploration of effective methods for remediation and rebuild of heavy metal contaminated soils. Although phytoremediation shows great potential in remediation of heavy metal contaminated soil, there still exists many problems in practical application. This article analysis the problems existing in phytoremediation, summarizes the research progress of the technology in application from all the perspective of phytoremediation processes.

The Impact of Waste Compost-Based Soil Amendments on the Leaching Behavior of a Heavy Metal Contaminated Soil

2007 ◽  
Vol 24 (7) ◽  
pp. 897-904 ◽  
Author(s):  
René van Herwijnen ◽  
Abir Al-Tabbaa ◽  
Tony R. Hutchings ◽  
Andy J. Moffat ◽  
Sabeha K. Ouki ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Contaminated Soil ◽  
Soil Amendments ◽  
Leaching Behavior ◽  
The Impact

scholarly journals EXPOSURE OF COWPEA (vigna unguiculata (l) walp) TO SPENT ENGINE OIL CONTAMINATED SOIL AND ITS IMPLICATIONS ON CONSUMER’S HEALTH

2020 ◽  
Vol 1 (2) ◽  
pp. 24-36
Author(s):  
T. B. Bello ◽  
O. M. Bolaji ◽  
F. A. Fakunle
Keyword(s):  
Heavy Metal ◽  
Plant Height ◽  
Contaminated Soil ◽  
Hazard Quotient ◽  
Environmental Pollutant ◽  
Engine Oil ◽  
Plant Weight ◽  
Lead And Cadmium ◽  
Spent Engine Oil ◽  
The Impact

Spent Engine oil (SEO) is a common environmental pollutant generated after engine services. Disposing SEO is a serious environmental issue in Nigeria as generators end up disposing it in water drain systems, rivers, open vacant plots and agricultural lands. Thus, the need to assess the impact of such disposal on environmental components becomes imperative.  Using a completely randomized design, a control and seven treatments of SEO (T0: 0 ml, T1: 5 ml, T2: 10 ml, T3: 15 ml, T4: 20 ml, T5: 25 ml, T6: 50 ml, T7: 75 ml) were applied to potted soil for cowpea planting. Plant height, leave number, yield, heavy metal load and hazard quotient were assessed. Baseline heavy metal analysis showed the SEO contained lead and cadmium at 0.003 mg/kg and 0.462 mg/kg respectively. There was significant reduction in plant height (T0: 50.72 cm, T3: 37.36 cm, T7:  24.33 cm), number of leaves (T0: 25.91, T3: 21.57, T7: 17.67), seed weight (T0: 24.40 g, T3: 16.38 g, T7: 5.03 g) and plant weight (T0: 171.60 g, T3: 136.60 g, T7: 54.70 g) in contaminated soil with increasing SEO concentration (P<0.05). Cowpea grown on contaminated soil accumulated cadmium in seeds (T0: 0.000 mg/kg, T3: 0.057 mg/kg, T7 0.119 mg/kg) and in roots (T0: 0.000 mg/kg, T3: 0.079 mg/kg, T7: 0.263 mg/kg) with hazard quotient ranging from 0.084 to 0.216. This study revealed that increasing environmental pollution through indiscriminate SEO increases the possibility of health risk by elevating hazard quotient and this should therefore be discouraged.

scholarly journals The Impact of Egbu Abattoir Wastes on Fungal Concentrates of the Soil Environment

2020 ◽  
pp. 1-5
Author(s):  
M. I. Nwachukwu ◽  
C. C. Ike ◽  
I. O. Nwachukwu
Keyword(s):  
Contaminated Soil ◽  
Control Soil ◽  
Soil Environment ◽  
Standard Methods ◽  
Candida Sp ◽  
Invading Species ◽  
Fusarium Sp ◽  
Aspergillus Sp ◽  
Rhizopus Sp ◽  
The Impact

The impact of Egbu abattoir wastes on fungal concentrates of the soil environment was undertaken. Samples of contaminated soil from the abattoir environment were taken against control and evaluated for fungal concentrates using standard methods. Results obtained showed that total fungal count (TFC) ranged from 3.5×105 cfu/g to 4.50×105 cfu/g and total hydrocarbon utilizing fungi (THUF) ranged from 1.8×105 cfu/g to 3.80×105 cfu/g.  The percentage occurrence for mould isolates indicated the presence of Absidia sp., Aspergillus sp., Fusarium sp., Cladosporium sp., Penicillium sp., and Rhizopus sp. while yeast isolates were Candida sp., Rhodotorula sp., Saccharomyces sp., and Torulopsis sp., for both seasons. Though most of these organisms were indigenous to the soil some invading species were also isolated and were higher in contaminated soil than control soil. Egbu abattoir waste could be behind these observations. The study has revealed the impact of Egbu abattoir wastes on fungal concentrates of the soil environment.

scholarly journals Shift of bacterial communities in heavy metal-contaminated agricultural land during a remediation process

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0255137
Author(s):  
Chi-Chun Huang ◽  
Chih-Ming Liang ◽  
Ting-I Yang ◽  
Jiann-Long Chen ◽  
Wei-Kuang Wang
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Community Structure ◽  
Microbial Communities ◽  
Contaminated Soil ◽  
Bacterial Communities ◽  
Soil Microbial Communities ◽  
Soil Environment ◽  
Soil Microbial ◽  
Remediation Process

Anthropogenic activities accompanied by heavy metal waste threaten the environment. Heavy metal pollution alters the soil microbial community composition, and the microorganisms that adapt to this stress increase in abundance. The remediation process of contaminated soil not only reduces the concentration of heavy metals but also alters the bacterial communities. High-throughput 16S rDNA sequencing techniques were applied to understand the changes in soil microbial communities. Using the remediation approach of the soil mixing, the concentrations of heavy metals in the contaminated areas were diluted and the soil environment was changed. The change of soil environment as a disturbance contributed to the alteration of microbial diversity of the remediated areas. The pH and heavy metals (Cr, Cu, Ni, and Zn) were the most influential factors driving the changes in community structure. The bacterial community structure was significantly different among sample areas. The decrease of heavy metals in soil may be the important factors that changed the microbial composition. This study provides the better understanding of the changes in composition of microbial communities affected by the remediation process in heavy metal-contaminated soil.

THE EFFECT OF BACTERIAL STRAINS ON THE ENZYMATIC ACTIVITY OF SOILS IN IMPACT ZONE OF ATAMAN LAKE

2020 ◽  
Author(s):  
V.V. Zinchenko ◽  
◽  
E.S Fedorenko ◽  
A.V Gorovtsov ◽  
T.M Minkina ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Dehydrogenase Activity ◽  
Contaminated Soil ◽  
Model Experiment ◽  
Impact Zone ◽  
Bacterial Strains ◽  
The Impact

As a result of the model experiment, an increase in the enzymatic activity of meadow chernozem of the impact zone of Ataman Lake with the introduction of a strains mixture of metal-resistant microorganisms into the soil was established. The experiment has shown that the application of bacterial strains increases the dehydrogenase activity of contaminated soil by 51.8% compared to the variant without remediation

Investigation on Heavy Metal Removal from a Crude Oil Contaminated Soil using Rhamnolipid Biosurfactant as a New Eco-Friendly Method

2020 ◽  
Vol 57 (6) ◽  
pp. 515-520
Author(s):  
Nayyereh Kholghi ◽  
Hossein Amani ◽  
Shokoufeh Malekmahmoodi ◽  
Alireza Amiri
Keyword(s):  
Heavy Metal ◽  
Crude Oil ◽  
Contaminated Soil ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Rhamnolipid Biosurfactant

Evaluation of Nanotechniques and Conventional Techniques for the Removal of Dioxins

2018 ◽  
Vol 9 (1) ◽  
pp. 79-84
Author(s):  
Vaishali V. Shahare ◽  
Rajni Grover ◽  
Suman Meena
Keyword(s):  
Soil Sample ◽  
Human Health ◽  
Surface Area ◽  
Contaminated Soil ◽  
Conventional Treatment ◽  
Volume Ratio ◽  
Soil Samples ◽  
Dioxins And Furans ◽  
Palladized Iron ◽  
The Impact

Background: The persistent dioxins/furans has caused a worldwide concern as they influence the human health. Recent research indicates that nonmaterial may prove effective in the degradation of Dioxins/furans. The nanomaterials are very reactive owing to their large surface area to volume ratio and large number of reactive sites. However, nanotechnology applications face both the challenges and the opportunities to influence the area of environmental protection. Objective: i) To study the impact of oil mediated UV-irradiations on the removal of 2,3,7,8-TCDD, 2,3,7,8-TCDF, OCDD and OCDF in simulated soil samples. ii) To compare the conventional treatment methods with the modern available nanotechniques for the removal of selected Dioxins/furans from soil samples. Methods: The present work has investigated an opportunity of the degradation of tetra and octachlorinated dioxins and furans by using oil mediated UV radiations with subsequent extraction of respective dioxins/furans from soils. The results have been compared with the available nanotechniques. Results: The dioxin congeners in the simulated soil sample showed decrease in concentration with the increase in the exposure time and intensity of UV radiations. The dechlorination of PCDD/Fs using palladized iron has been found to be effective. Conclusion: Both the conventional methods and nanotechnology have a dramatic impact on the removal of Dioxins/furans in contaminated soil. However, the nanotechniques are comparatively costlier and despite the relatively high rates of PCDDs dechlorination by Pd/nFe, small fraction of the dioxins are recalcitrant to degradation over considerable exposure times.

scholarly journals Development of a Rapid Risk and Impact Assessment Tool to Enhance Response to Environmental Emergencies in the Early Stages of a Disaster: A Tool Developed by the European Multiple Environmental Threats Emergency NETwork (EMETNET) Project

2021 ◽  
Author(s):  
Emma-Jane Goode ◽  
Eirian Thomas ◽  
Owen Landeg ◽  
Raquel Duarte-Davidson ◽  
Lisbeth Hall ◽  
...  
Keyword(s):  
Public Health ◽  
Impact Assessment ◽  
Assessment Tool ◽  
The European Union ◽  
Protection Mechanism ◽  
Environmental Threats ◽  
Environmental Disasters ◽  
Early Stages ◽  
Potential Risks ◽  
The Impact

AbstractEvery year, numerous environmental disasters and emergencies occur across the globe with far-reaching impacts on human health and the environment. The ability to rapidly assess an environmental emergency to mitigate potential risks and impacts is paramount. However, collating the necessary evidence in the early stages of an emergency to conduct a robust risk assessment is a major challenge. This article presents a methodology developed to help assess the risks and impacts during the early stages of such incidents, primarily to support the European Union Civil Protection Mechanism but also the wider global community in the response to environmental emergencies. An online rapid risk and impact assessment tool has also been developed to promote enhanced collaboration between experts who are working remotely, considering the impact of a disaster on the environment and public health in the short, medium, and long terms. The methodology developed can support the appropriate selection of experts and assets to be deployed to affected regions to ensure that potential public health and environmental risks and impacts are mitigated whenever possible. This methodology will aid defensible decision making, communication, planning, and risk management, and presents a harmonized understanding of the associated impacts of an environmental emergency.

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