In recent years, researchers have become more and more interested in using tanninrich plants and plant extracts in ruminant diets to improve the quality of animal products. Some research results show that plant tannins can effectively improve the quality of meat and milk, and enhance the oxidative stability of the product.
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1. Introduction. Soil total petroleum hydrocarbon (TPH) pollution in petroleum exploitation areas is a worldwide environmental problem. There are large amounts of TPH−contaminated soils in major oil fields worldwide, such as those in the Middle East ([AlSarawi and Massoud, 1998], [Besalatpour et al, 2008]), North America ([Iturbe et al, 2004], [Maddela et al, 2016]), western Africa (Adeniyi ...
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Initial TPH values in the molasses treatment were 69,529 mg/kg which decreased to 41,767 mg/kg at week 15 (Figure 1(a)), a removal removal rate of 40%.Molasses is enriched with various simple sugars (sucrose, glucose, and fructose); basic oxides (, K 2 O, CaO, and MgO); vitamins (B 1, B 2, and B 6); and several acids [] and, therefore, serves as a source of readily available nutrients for ...
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Soil contamination with total petroleum hydrocarbons (TPH) is widespread throughout the globe due to the massive production of TPH anthropogenically and its occurrence in the soil. TPH is toxic to beneficial soil organisms and humans and thus has become a serious concern among the public. Traditionally TPH toxicity in the soil is estimated ...
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يرجع طحن بذور الحبوب إلى العمل الميكانيكي لعدة قوى: الضغط ، والقص ، والسحق ، والقطع ، والاحتكاك ، والاصطدام ، التي تتعرض لها البذور ، اعتمادًا على التصميم المستخدم في الطاحونة المستخدمة للطحن (مطحنة الأسطوانة ، مطحنة ...
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Total petroleum hydrocarbons (TPH) is a term used to describe a large family of several hundred chemical compounds that originally come from crude oil. Crude oil is used to make petroleum products, which can contaminate the environment.
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Given the importance of TPH as a tool for screening environmental media for petroleum product contamination, and the fact that more than a decade has passed since the development of the PPRTVs for the various TPH fractions, the purpose of this current assessment is to reevaluate and update the provisional toxicity values (pRfDs and pRfCs) for ...
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In this review, studies on petroleum sludge composting have been investigated in the aim to understand the sludge biotransformation and highlighting the points that need more attention. Total petroleum hydrocarbons (TPH) are the major contaminants present in the petroleum sludge they ranged from to g/kg of dry matter, indicating a potential risk to the environment if not correctly ...
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For successful soil remediation and hydrocarbon exploration operations, determining the total petroleum hydrocarbon (TPH) content of soils is an indispensable process step. This paper reports on the performance of a handheld Fourier transform nearinfrared (FTNIR) spectrometer for rapid and quantitative determination of TPH content of soils from two different sites by diffuse reflection ...
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The present study reports the level of total petroleum hydrocarbon (TPH) in 27 commercially important fish, crustaceans and cephalopods from Orissa coast, Bay of Bengal to provide the baseline data for oil contamination in marine biota. The results showed significant differences in the TPH concentra .
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TPH and PAHs were significantly degraded in all treatments (72 to 79% and 83 to 87%, respectively), and the biodegradation values were higher when nutrients were not added, especially for benzo(a)anthracene and chrysene. The moisture content and aeration were determined to be the key factors associated with PAH bioremediation.
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Total petroleum hydrocarbons (TPH) is a term used to describe a large family of several hundred chemical com pounds that originally come from crude oil. Crude oil is used to make petroleum products, which can contaminate the envi ronment. Because there are so many different chemicals in
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Oilbased drilling cuttings (OBDC) contain a large amount of total petroleum hydrocarbon (TPH) pollutants, which are hazardous to the environment. In this study, Fe2+activating hydrogen peroxide (Fe2+/H2O2), peroxymonosulfate (Fe2+/PMS), and peroxydisulfate (Fe2+/PDS) advanced oxidation processes (AOPs) were used to treat OBDC due to the difference in the degradation capacity of TPH caused by ...
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1. Introduction. In recent years, petroleum hydrocarboncontaminated soils have become a serious environmental problem (Gielnik et al., 2019; Lu et al., 2014; Song et al., 2019).The concentration of total petroleum hydrocarbon (TPH) in soil has been reported to be as high as 44,600 mg/kg dry soil (Wu et al., 2016; Khudur et al., 2019).TPH is consisted of different materials such as aliphatic ...
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Field Measurement T echnologies for Total Petroleum Hydrocarbons in Soil, Horiba Instruments Incorporated OCMA350 Oil Content Analyzer, EP A/600/R01/089, September 2001. 6.
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For the case of a sodium dodecyl sulphate 1% solution, total petroleum hydrocarbons removal was as high as %. Combinations of sodium docecyl sulphate and salts, gave removal rates up to %.
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Petroleum products can be made up of hundreds of individual petroleum hydrocarbons. TPH is a value that represents the amount of petroleum hydrocarbons in a given sample, as previously presented in Section There are far more than 250 individual chemicals that are known as petroleum hydrocarbons and there is an inherent complexity involved in chemically and physically describing and ...
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Alkanes and PAH are the two fractions of TPH. The changes of the concentrations of alkanes and PAH during bioremediation of the oilcontaminated soil are shown in Fig. 8 weeks of incubation, alkane concentrations decreased from 15400 ± 130 to 12300 ± 420, 12200 ± 360, 7200 ± 280, and 6160 ± 250 mg kg −1 soil in the CK, WHC, BS, and BA treatments, respectively.
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Results Vertical Distribution of TPH in Soils. TPH accumulated within the shallowest soil layer in the case of the lowly permeable PHchlv soils, only about m depth, showing the highest (cca. 3040 g kg −1) TPH content in the first m depth layer, and presented very low values deeper (Fig. 2).The highly permeable AReu soils showed a relatively uniform vertical ...
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Adewuyi et al. (Citation 2011) reported the mean concentration of total petroleum hydrocarbons in surface water as ± mg/L, which was higher than the reported concentrations in this study. Suratman (Citation 2013) reported the concentration of TPH on the surface river water ranged from to µg/L (mean ± µg/L). This ...
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The potential for use of alternatives to total petroleum hydrocarbons (TPH) for remediation purposes was examined specifically for JP4 fuel. The study objective was to determine the scientific basis for use of fuel constituents other than TPH in establishing soil cleanup standards at JP4contaminated sites. The general bases for TPH soil ...
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Oxidation of total petroleum hydrocarbons (TPH) under various soil:solution ratios (w:v). In each reactor, 15 g of dieselcontaminated soil was treated with a different volume of reagent solution containing 3% PMS and % nZVI for a 2 h reaction time. The letters (ac) above the bars indicate significant differences (p <, Tukey's test).
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Oxidative stress in petroleumcontaminated soils. Changes in the MDA contents of the plant leaves exposed to soil contaminated by different TPH levels are shown in Fig. 1 b. The MDA levels increased significantly as the TPH concentration increased from to g kg − addition, the MDA contents of the three plant species exhibited similar responses over time.
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In the course of 18 months of remediation, total petroleum hydrocarbons values decreased in 99 and 88% on average for aliphatics and aromatics, respectively, indicating a successful biodegradation.
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Total petroleum hydrocarbons ( TPH) is a term used for any mixture of hydrocarbons that are found in crude oil. There are several hundred of these compounds, but not all occur in any one sample. Crude oil is used to make petroleum products, which can contaminate the environment.
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Several national policies include the IV based on the so called total petroleum hydrocarbons (TPH) measure. However, the TPH assessment does not indicate the individual substances that may produce contamination. The soil quality assessment can be improved by including common hazardous compounds as polycyclic aromatic hydrocarbons (PAHs) and ...
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Second Hand Tph Stone Crusher Plant In India ... الكسارة الفكية ، الكسارة الصدمية ، الكسارة المخروطية وآلة صنع الرمل.حتى الآن ، قمنا بتطوير 10 سلاسل تتضمن أكثر من 100 نموذج من الماكينات التي يمكن مطابقتها بحرية من ...
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WHAT IS TOTAL PETROLEUM HYDROCARBON OR TPH? TPH is defined by the analytical method that is used to measure it. Conventional TPH measurement techniques quantify only those hydrocarbons that are extracted by the particular method.
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Prior to the application of OBM, BTEX and TPH concentrations were analyzed. Total petroleum hydrocarbons were extracted with hexane at 1:10 solids: solvent ratio, plus addition of g Na 2 SO 4 for 5 minutes on a reciprocating shaker followed by centrifugation for 10 minutes. Five mL of the resulting supernatant was equilibrated for 2 minutes ...
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methods typically used for TPH, (2) the chemical, physical, and biological mechanisms involved in the degradation of TPH and (3) that both the analytical methods and the degradation mechanisms have sitespecific soil matrix effects that make it difficult to predict performance from similar sites. Variations of TPH Analyses
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This article provides a comprehensive review on aerobic composting remediation of soil contaminated with total petroleum hydrocarbons (TPHs). The studies reviewed have demonstrated that composting technology can be applied to treat TPH contamination (as high as 380,000 mg kg −1) in clay, silt, and sandy soils of these studies reported more than 70% removal efficiency, with ...
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يرغب أحد موردي المواد من بلجيكا في إنتاج مسحوق الحجر الجيري لملابسه...
الهند غنية بالموارد المعدنية المختلفة وهي سوق مهم لمعالجة المعادن
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