A method to determine alpha-, beta- and gamma-hexabromocyclododecane (HBCD) and tetrabromobisphenol A (TBBPA) in water and sediments was presented using solid phase extraction (SPE) and/or solvent extraction. Recoveries from sediments were approximately 100% for all the chemicals, while recoveries of alpha-, beta- and gamma-HBCDs from water were dependent on the extraction method. In the case o...

The leachates produced at the municipal solid waste (MSW) landfill of Asturias (Spain) were submitted to a biological treatment consisting of a pressurized nitrification-denitrification process followed by ultrafiltration. The effluent from this treatment plant has a high chemical oxygen demand : biochemical oxygen demand (COD : BOD( 5)) ratio (about 25 : 1). The COD values of the effluent are ...

A comprehensive assessment of heavy metals and organic content was performed for leachates produced from a number of old and new landfills in Jordan over 9 month in efforts to set a framework for treatment regulations. All leachates were basic (pH = 7 9) and have high electric conductivity and high organic contents (COD = 3000 500,000 mg/L, TOC= 500 21,000 mg/L). The organic content was inverse...

Sampling and analysis of leachate from Bhalaswa landfill and groundwater samples from nearby locations, clearly indicated the likely contamination of groundwater due to landfill leachate. The results of simulation studies carried out for the migration of Chloride from landfill shows that the simulation results are in consonance with the observed concentration of Chloride in the vicinity of land...

The biological treatment of ammonia-rich landfill leachates due to an inadequate C to N ratio requires expensive supplementation of carbon from an external carbon source. In an effort to reduce treatment costs, the objective of the study was to determine the feasibility of nitrogen removal via the nitrite pathway during landfill leachate co-treatment with municipal wastewater. Initially, the la...

Landfill leachate is one of the most important sources of toxic organic compounds for ground and surface waters. Advanced oxidation processes can offer an effective and environmentally friendly method for pretreatment of landfill leachates. In this study, an ultrasonic process was used for the pre-treatment of landfill leachate with the objective of improving its overall biodegradability, evalu...

On! a! global! level,! landfilling! is! still! the! main! method! to! dispose! of! waste.! In! particular! low:! and! middle:income! countries! almost! exclusively! depend! on! landfilling,! due! to! its! low! costs! and! convenient! operation! and! management.! Regulations!and!guidelines!exist!for!landfills!in!moderate!climates!(Western!Europe,! United! States).! These! guidelines,! neverthele...