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HGT Hydraulic Gyratory Crusher

HGT Hydraulic Gyratory Crusher

HGT Gyratory Crusher is a new-type intelligent coarse crusher with big capacity and high efficiency. It integrates mechanical, hydraulic, electric, automated, and intelligent controlling technologies which grant it with advantages traditional crushing

European Type Jaw Crusher PEW

European Type Jaw Crusher PEW

Jaw crushers has stationary jaw crusher, portable jaw crusher and mobile jaw crusher (crawler jaw crusher). Jaw crusher (PEW Series) is not only able to be used together with mine-selecting and gravel processing equipments but also be used independen

Jaw Crusher PE

Jaw Crusher PE

Jaw crusher is driven by a motor, and the moving jaw moves up and down via eccentric shaft. The angle between fixed jaw and moving jaw becomes smaller when the moving jaw runs down, then the materials are crushed into pieces. It will become bigger whe

HPT Hydraulic Cone Crusher

HPT Hydraulic Cone Crusher

Base on the latest technology and decades of years’ producing experience, Our Company designed the HPT series cone crusher. It has excellent crushing efficiency and good hydraulic control system. Now the HPC series cone crusher has wide application

HST Hydraulic Cone Crusher

HST Hydraulic Cone Crusher

HST Single Cylinder Hydraulic Cone Crusher is a new high-efficiency cone crusher independently researched, developed and designed by SBM through summarizing over twenty years of experience and widely absorbing advanced American and German technologies

CI5X Series Impact Crusher

CI5X Series Impact Crusher

CI5X Impact Crusher breaks materials with impact force. When materials enter the working area of hammer, they may be crushed under the high-speed shock and then thrown onto the impact device above the rotor for another crushing. Next, materials bounce

VSI6X Series Vertical Crusher

VSI6X Series Vertical Crusher

Due to the increasing market demand for the scale, intensification, energy conservation, environment protection and high-quality machine-made sand, SBM, a Chinese professional sand maker manufacturer, further optimizes the structure and function of tr

VSI5X Vertical Shaft Impact Crusher

VSI5X Vertical Shaft Impact Crusher

VSI Crushers Working Principle Raw material falls down into feed hopper, and then enters rotor through central entrance hole. It is accelerated in high-speed rotor, and then is thrown out at speed of 60-75m/s. When hitting anvil, it is crushed. Final

VSI Vertical Shaft Impact Crusher

VSI Vertical Shaft Impact Crusher

VSI Series vertical shaft impact crusher is designed by reputed German expert of SBM and every index is in worlds leading standard. It incorporates three crushing types and it can be operated 720 hours continuously. Nowadays, VSI crusher has replaced

VUS aggregate optimization system

VUS aggregate optimization system

The VU system is a global most-advanced dry-process sand-making system. The system is constructed like a tower. Its fully-enclosed layout features high integration. It integrates the functions of high-efficiency sand making, particle shape optimizatio

MTW-Z European Trapezium Mill

MTW-Z European Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

5X Series Roller Grinding Mill

5X Series Roller Grinding Mill

Grinding roller of MB5X Pendulum Roller Grinding Mill l adopts diluted oil lubrication. It is a technology initiated domestically which is maintenance-free and easy to operate. Diluted oil lubrication is oil bath lubrication, more convenient than grea

MTW Trapezium Mill

MTW Trapezium Mill

MTW European Grinding Mill is innovatively designed through deep research on grinding mills and development experience. It absorbs the latest European powder grinding technology and concept, and combines the suggestions of 9158 customers on grinding m

LM Vertical Mill

LM Vertical Mill

LM Vertical Grinding Mill integrates crushing, drying, grinding, separating and transport. The structure is simple while the layout is compact. Its occupational area is about 50% of that of the ball-milling system. The LM grinding mill can also be arr

TGM Trapezium Mill

TGM Trapezium Mill

TGM Super Pressure Trapezium Mill The operation principle of main unit of Trapezium mill is that main unit runs with the central shaft that is driven by a gear box. The top of the shaft is connected with a quincunx stand on which a grinding roller is

hydrocarbon soil washing ampamp surfactant flushing

Surfactant-Enhanced Soil Washing for Removal of Petroleum

Jun 01, 2018 Upcoming surfactants like gemini and switchable surfactants are summarized. We assess the challenges and opportunities of in-situ and ex-situ soil washing, the mechanisms of surfactant-enhanced soil washing, and the criteria to follow for surfactant selection. Furthermore, we briefly discuss the operational and environmental factors affecting

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EFFECT OF SOIL WASHING ON PETROLEUM- HYDROCARBON

Key words: soil washing, petroleum hydrocarbons, surfactant, humic acids, SEM INTRODUCTION Soil washing and flushing have been proposed as possible remediation technologies for soils contaminated by petroleum hydrocarbons and other hydrophobic organic chemicals (Nash, 1987;

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Removing of hydrocarbon contaminated soil via air flushing

Aug 02, 2012 Surfactants enhanced air sparging actually acts to displace the organic contaminant entrapped in soil pores. In this work, a comparison study was carried out between two air-flushing modes, namely, continuous air flushing and pulsed air flushing, which was conducted to remediate soil contaminated with waste-lubricant oil.

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The application of soil washing for treatment of

It is due to the high solubilizing ability of Brij 35 for benzo(a)pyrene, its low adsorption onto soil, and also its lower CMC in comparison with the other surfactant. According to the results, the higher the surfactant concentration, washing time, and temperature are, the more removal efficiency will be.

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Soil flushing by surfactant solution: pilot-scale tests of

The positive effect of surfactant presence in aqueous phase in contact with PCBs contaminated soil to PCBs solubility has been known for many years. Treatment technique based on surfactant solution flushing/washing has been found to be able to reduce hydrophobic hydrocarbons content in solid contaminated materials.

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In Situ Flushing with Surfactants and Cosolvents

1.2 Surfactants and Cosolvents In situ flushing is commonly applied to contaminated sites using surfactants or cosolvents as the primary flushing agents. Surfactants (surface-active-agents) are chemical compounds frequently used in detergents and food products that alter the properties of solution interfaces. Surfactants

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Removal of PAHs with surfactant-enhanced soil washing

Surfactant soil washing The removal of individual PAH shows similar trend (data not shown); therefore the total removal ratio of the five target PAHs is discussed thereafter. Fig. 2a–f present the removal ratios of tests 1–6. Observation of these figures reveals that the first four factors, i.e., stirring speed, washing time, surfactant

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(PDF) In Situ flushing of contaminated soils from a

In situ flushing has been used to facilitate the removal of sorbed and deposited polycyclic aromatic hydrocarbons (PAHs), total petroleum hydrocarbons (TPHs), and diesel fuel from soil materials (Abdul et al., 1990).The success of this technique can be attributed to the capacity of surfactants, at concentrations above the critic micellar

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Removing of hydrocarbon contaminated soil via air flushing

Surfactants enhanced air sparging actually acts to displace the organic contaminant entrapped in soil pores. In this work, a comparison study was carried out between two air-flushing modes, namely

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Soil Washing Potential of a Natural Surfactant

Feb 27, 1997 HCB recoveries after 12 pore volumes of flushing with 0.5 and 1% natural surfactant solutions were 20 and 100 times more than that recovered by water flooding. These promising results warrant further research to establish the usefulness of plant-based surfactants for soil washing

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Soil washing, ozofractionation and metal sequestration

polycyclic aromatic hydrocarbons from 13.2 mg/L to <0.5 mg/L and cyanide from 5.9 mg/L to 0.02 mg/L, and reagents sequestered heavy metals in the flushing solution. Keywords: soil washing, surfactant, flushing solution, ozofractionation, sequestration 1. Introduction

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(PDF) In Situ flushing of contaminated soils from a

In situ flushing has been used to facilitate the removal of sorbed and deposited polycyclic aromatic hydrocarbons (PAHs), total petroleum hydrocarbons (TPHs), and diesel fuel from soil materials (Abdul et al., 1990).The success of this technique can be attributed to the capacity of surfactants, at concentrations above the critic micellar

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In Situ flushing of contaminated soils from a refinery

The initial average total petroleum hydrocarbon (TPH) concentration for the demonstration field test was 55,156 g/kg. After six weeks of in situ flushing with alternate periods of water and water/surfactant, an average concentration of 1,407 mg/kg was reached, achieving a total removal efficiency of 98 percent. At the end of the process, no

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THE USE OF MICROEMULSION AND FLUSHING SOLUTIONS

extraction, soil washing, soil flushing, and electrokinetic soil remediation (Virkutyte et al., 2002). Soil flushing by surfactant solutions to remove NAPLs is a technique currently used (Ouyang et al., 1995). Soil washing process is a physical process of pollutant removal accomplished through the rinsing of soil with water, surfactants

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Surfactant-Enhanced Washing of Soils Contaminated with

An old automotive industrial site located at Mexico City with many years of operation and contaminated with heavy oil hydrocarbons, particularly spent oils, was assessed for restoration using the surfactant enhanced soil washing (SESW) process. The main goal of this study was to characterize the contaminated soil in terms of TPHs, BTEX, PAHs, and metals contents as well as microbiologically

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Effect of Soil Texture on Remediation of Hydrocarbons

In the second flushing set group is carried out on the remaining soil using 300 mL of 3% surfactant solution followed by five water washing cycles and the results are given in Table 4. The results reveal that, the percentage of removed oil was 9.96% from residual oil after first surfactant flushing run and decreased to 4.79% for next run (water

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Mathematical simulation of surfactant flushing process to

Hydrocarbons are one of the most important soil contaminations in the world, especially in oil-producing countries. Several methods exist for the remediation of organic and hydrocarbon contaminated soils. Soil washing is one of remediation methods which could be enhanced by using different kinds of surfactants.

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Remediation of Hydrocarbon Contaminated Soils Oil&Gas

Soil Washing. Description: this technique, generally carried out on site, consists in the soil decontamination by washing with water and possible addition of other substances (chelating agents, surfactants, acids or bases), according to the needs, in order to improve the ‘solid-liquid extraction in contact with the ground. The latter

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(PDF) Combination of surfactant enhanced soil washing and

Compared to other surfactants, its chemical characteristics together with its low cost, and low toxicity (Varma et al., 1985) on soil microorganisms (Bautista et al., 2009) compared to other surfactants, are of great interest for soil remediation companies.Although this washing technique is generally efficient to clean soil, the major concern

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Soil Washing Pennsylvania State University

Mar 27, 2017 Soil washing does not clean the soil, it separates the contaminated fraction from the clean fraction, hence minimizing the amount of soil need to be cleaned. It is a technique of concentrating contaminants through separation Soil washing does not destroy or immobilize the contaminants

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Combinations of Surfactant Flushing and Bioremediation for

A laboratory study was conducted to evaluate the contaminant removal efficiency of four soil flushing approaches (water flushing, surfactant flushing (Tween-80), bioremediation + water flushing

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Optimization of Surfactant-Aided Remediation of

May 16, 2007 Soil matrices contaminated with polycyclic aromatic hydrocarbons (PAHs) abound at the sites of coke-oven gas plants, refineries, and many other major chemical industries. The removal of PAHs from soil using pure water, via soil washing for (ex situ) or soil flushing (in situ), is quite ineffective due to their low solubility and hydrophobicity.

More

Soil Washing Potential of a Natural Surfactant

HCB recoveries after 12 pore volumes of flushing with 0.5 and 1% natural surfactant solutions were 20 and 100 times more than that recovered by water flooding. These promising results warrant further research to establish the usefulness of plant-based surfactants for soil washing applications.

More

Soil flushing by surfactant solution: pilot-scale tests of

process in which the PCBs are leached out from the soil by using surfactants solutions. This technique is mostly called soil flushing when used as in-situ process or soil washing for ex-situ batch arrangement [2, 3, 4]. The positive effect of surfactant presence in aqueous phase in contact with

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Soil washing, ozofractionation and metal sequestration

polycyclic aromatic hydrocarbons from 13.2 mg/L to <0.5 mg/L and cyanide from 5.9 mg/L to 0.02 mg/L, and reagents sequestered heavy metals in the flushing solution. Keywords: soil washing, surfactant, flushing solution, ozofractionation, sequestration 1. Introduction

More

Surfactant-Enhanced Washing of Soils Contaminated with

An old automotive industrial site located at Mexico City with many years of operation and contaminated with heavy oil hydrocarbons, particularly spent oils, was assessed for restoration using the surfactant enhanced soil washing (SESW) process. The main goal of this study was to characterize the contaminated soil in terms of TPHs, BTEX, PAHs, and metals contents as well as microbiologically

More

In Situ flushing of contaminated soils from a refinery

The initial average total petroleum hydrocarbon (TPH) concentration for the demonstration field test was 55,156 g/kg. After six weeks of in situ flushing with alternate periods of water and water/surfactant, an average concentration of 1,407 mg/kg was reached, achieving a total removal efficiency of 98 percent. At the end of the process, no

More

Treatment of Fuel-Oil Contaminated Soils by Biodegradable

Among petroleum-hydrocarbon pollutants, fuel-oil is more difficult to treat compared to gasoline and diesel fuel. The objectives of this bench-scale study were to: (1) develop a two-stage remedial system consisting of surfactant washing followed by Fenton-like oxidation process to remediate fuel-oil contaminated soils; (2) evaluate the effects of residual surfactant and soil organic matter

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THE USE OF MICROEMULSION AND FLUSHING SOLUTIONS

extraction, soil washing, soil flushing, and electrokinetic soil remediation (Virkutyte et al., 2002). Soil flushing by surfactant solutions to remove NAPLs is a technique currently used (Ouyang et al., 1995). Soil washing process is a physical process of pollutant removal accomplished through the rinsing of soil with water, surfactants

More

Optimization of Surfactant-Aided Remediation of

May 16, 2007 Soil matrices contaminated with polycyclic aromatic hydrocarbons (PAHs) abound at the sites of coke-oven gas plants, refineries, and many other major chemical industries. The removal of PAHs from soil using pure water, via soil washing for (ex situ) or soil flushing (in situ), is quite ineffective due to their low solubility and hydrophobicity.

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Biosurfactants: Production and Applications

Surfactants have the potential to promote desorption of the contaminants from soil. Usually, 1-2% (w/w) of surfactant is used for washing contaminant soil, whereas in aqueous solution the concentration of surfactant can be as low as 10 times less than in soil. Rhamnolipids were effective in removing polycyclic aromatic hydrocarbons (PAHs) and

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Aqueous Surfactant Washing of Residual Oil Contamination

Chunlong Zhang, Kalliat T. Valsaraj, W. David Constant, Dipak Roy, Surfactant screening for soil washing: Comparison of foamability and biodegradability of a plant‐based surfactant with commercial surfactants, Journal of Environmental Science and Health, Part A, 10.1080/10934529809376787, 33, 7, (1249-1273), (1998).

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Fact Sheet A Citizen's Guide to In Situ Soil Flushing

With soil flushing, the soil is treated in place using an injection/recirculation process. Soil washing involves excavating the contaminated soil and treating it at the surface in a soil washer. with oily waste, surfactants can be added to the flushing solution to remove them more easily from the soil.

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Enhanced Sequential Flushing Process for Removal of

Ex situ soil washing or in situ soil flushing has been shown to have great potential to remove a wide range of contaminants from soils (Sharma and Reddy 2004). Principally, a suitable chemical agent is flushed through the soil to enhance the apparent solubilization of

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EnviroClean Solution

EnviroClean ®, our #1 best selling product, is a non-flammable, non-toxic, water-based proprietary blend of surfactants specifically engineered as a cleanup and mitigation agent.Effectively used for cleanup of hydrocarbon spills, EnviroClean ® is listed on the U.S. EPA NCP Product Schedule as a surface washing

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Enhanced Biodegradation of Hydrocarbons in Soil by

Feb 28, 2009 Effectiveness of a microbial biosurfactant, sophorolipid, was evaluated in washing and biodegradation of model hydrocarbons and crude oil in soil. Thirty percent of 2-methylnaphthalene was effectively washed and solubilized with 10 g/L of sophorolipid with similar or higher efficiency than that of commercial surfactants. Addition of sophorolipid in soil increased biodegradation of model

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