نتایج جستجو برای: petroleum contaminated soil
تعداد نتایج: 224635 فیلتر نتایج به سال:
Remediation of hydrocarbon contaminated soils can be performed both in situ and ex situ using chemical oxidants such as sodium persulfate. Standard methods for quantifying persulfate require either centrifugation or prolonged settling times. An optimized soil extraction procedure was developed for persulfate involving simple water extraction using a modified disposable syringe. This allows cons...
The Gas Push–Pull Test (GPPT) is a tool for measuring in situ soil processes including methane oxidation. To quantify methane oxidation, methane and non-reactive gases selected based on transport behaviour similar to methane, were injected into soil above a petroleum hydrocarbon contaminated aquifer and gas samples were extracted over time. The rate of loss of methane was compared to the loss o...
PROBLEM STATEMENT: Petroleum hydrocarbons, and other volatile organic compounds (VOCs), which are found to contaminate groundwater and soils, are usually treated by pump-and-treat methods, which are very time-consuming, expensive, and not very effective. We are proposing the use of pervaporation for effectively removing these hydrocarbons and VOCs from contaminated soil and groundwater (with or...
A well healthy environment can quietly affect the life quality and human community. In recent decades the need for and utilizing fossil had increased and thus the environmental pollutions including for soil has also increased. Petroleum contaminated soils are not suitable for agricultural, residential and social usage and cause economical, ecological and agricultural damage. To cope with this c...
With the rapid development of the petroleum industry, a large number of oil contaminants leaked into the soil in the petrochemical complex areas, gas stations, automobile factory and other places, which resulted in serious soil contamination. Micro-Biological degradation of oil pollution was the focus of the present study. Many hydrocarbon-contaminated environments were characterized by low or ...
Introduction and purpose: Soil contamination by petroleum is mostly resulted from oil exploration, refining processes, leaking of oil products from storage tanks, leaking from pipelines due to pipe friction and decay, refinery wastewater discharge and agricultural irrigation with such materials. Sodium persulfate (Na2S2O8), which is a chemical oxidant, could be activated in ...
The soil microbiome consists of a vast variety microorganisms which contribute to essential ecosystem services including nutrient recycling, protecting structure, and pathogen suppression. Recalcitrant organic compounds present in soils contaminated with fuel oil can lead decrease functional redundancy within microbiomes. Ecopiling is passive bioremediation technique involving biostimulation in...
Bacterial biocatalysts play a key role in our transition to a bio-based, post-petroleum economy. However, the discovery of new biocatalysts is currently limited by our ability to analyze genomic information and our capacity of functionally screening for desired activities. Here, we present a simple workflow that combines functional metaproteomics and metagenomics, which facilitates the unmediat...
the increasing production and use of fossil fuels increase the probability of soil source contamination by oil and petroleum products, and pose a hazard to life. there are over 43,000 chemical contaminated sites in canada and usa, with 2,200 of them classified as high risk. in the us, over $10 billion are spent annually on the cleanup of contaminated sites. the primary objective of this study w...
This document was developed as a literature review and technology assessment of phytoremediation and its alternatives. As such, the stakeholders do not endorse the use of any specific technology, nor do they assume any liabilities with respect to the use of, or damages resulting from the use of, any information, apparatus, method, or process discussed in this document. Mention of trade names or...
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