Abstract This work examined the influence of endophytic fungi strains Exserohilum rostratum NMS1.5 and Xylariaceae sp. KKL3 mixed zeolite/chitosan (ZL-CH) on non-contaminated contaminated azo dye AR88 soil. The experiment used a randomized complete block design (RCBD) with LSD test (p<0.05) for 10 treatments consisting 50 grams soil (non-contaminated) 5 mg/L (contaminated soil), 0.1-gram ZL-...

Approximatelly 0.6 million tons of petroleum is poured into soil, groundwater, rivers and oceans every year in China. A large amount of the oil contaminated soil has not been remediated. The contaminated soil poses a severe threat to the environment and must be taken care of. Bioremediation has become one of the most popular and promising technologies with growing demand for the remediation of ...

The relationship between toxicity and soil contamination must be understood to develop reliable indicators of environmental restoration for bioremediation. Two bacterial rapid bioassays, SOS chromotest and the umu test with and without metabolic activation (S-9 mixture), were used to evaluate the genotoxicity of petroleum hydrocarbon-contaminated soil following bioremediation treatment. The soi...

Technology Description: The ENSR Biovault Treatment Process is an ex-situ bioremediation technology for the treatment of organic contaminated soils. Contaminated soils placed in specially designed soil piles, referred to as biovaults, are remediated by stimulating the indigenous soil microbes to proliferate and metabolize the organic contaminants in the soil at an accelerated rate. Depending on...

In the present work, the results obtained after testing of two technologies that are based on the usage of an electric field to treat contaminated soil, are presented. The first technology is the electroremediation and the second one is the electroflushing remediation. The tests were performed at laboratory scale during two different PhD researches. The treatment efficiency was up to 80% for th...

This paper reviews the development of ex-situ soil treatment technologies over the last 20 years, against the background of developing legislation and market forces. Legislation along the lines of site remediation, soil treatment, landfilling and reuse was developed and improved in the eighties and nineties. In addition, substantial budgets were made available by the national government to tack...

this study investigated the feasibility of using different extracting solutions at various concentrations to remove copper from low permeability silty loam soils, which have a high buffering soil, ph of 7.6, where it spiked with copper at concentration of about 1500 mg/kg to represent soil conditions. the most efficient extracting solutions could be used as purging/extracting solutions in other...

development of industry in sistan and baluchestan (sb) province in iran, has increased the amount of cadmium (cd) in industrial wastewater, which is used as a secondary water supply in this area. the present study aimed to investigate the variation of cd concentration in soil column and cultivated cucumber plant in greenhouse under short-term simulated industrial wastewater irrigation. to simul...

Batch treatability studies for a Cr(VI)-contaminated glacial soil from a Cr plating facility were conducted using 1X and 2X the stoichiometric ratio of calcium polysulfide (CPS). The pH of the treated soil increased from 6 to 11 upon CPS addition, but progressively returned to 8-8.5 over the course of 1 year. The 1X dosage maintained a highly reducing environment up to 21 days of monitoring wit...

abstract soil pollution with heavy metals like zinc causes increasing concerns about environment. according to distribution in soil, this study was conducted to compare zinc concentration between aggregate exteriors and interiors of some contaminated soils. aggregates were collected from 5 depths of 4 soil profiles with different textures and were separated mechanically into exterior and interi...