Experimental study of behavior of endocrine-disrupting chemicals in leachate treatment process and evaluation of removal efficiency

Abstract

An experimental study of the behavior of endocrine-disrupting chemicals (EDCs) in leachate treatment processes (aeration, coagulation and sedimentation, activated carbon adsorption, and advanced oxidation) was conducted and removal efficiencies were evaluated. Among target EDCs, concentrations of BPA (1800 times), DBP (10 times), BBP (40 times), and DEHP (30 times) in leachate are more than ten times higher than those in surface water. BPA, DBP, and BBP can be treated by aeration and DEHP, by advanced oxidation processes. BPA could not be effectively removed by coagulation and sedimentation because most of BPA partitioned in the supernatant. DEHP could hardly be treated by aeration. The removal ratios of DEHP were approximately 50 to 70% if the generated sediment was removed completely. The removal ratios of DEHP in leachate of 100 m 3 /d with 100 kg of activated carbon were 50 to 70%, assuming a complete mixing model. The concentration of DEHP was decreased to below one tenth in 120 min by advanced oxidation processes.

A comparative study on the efficiency of ozonation and coagulation–flocculation as pretreatment to activated carbon adsorption of biologically stabilized landfill leachate

“…Several studies (Asakura and Matsuto, 2009;Foo et al, 2013a;Papastavrou et al, 2009) use batch adsorption to evaluate the performance of activated carbon. Though batch adsorption studies provide vital equilibrium data on removal of pollutants from landfill leachate, column adsorption studies provide a more realistic representation of the use of carbon adsorption in real practice.…”

An Integrated Approach Combining Chemical Analysis and an In Vivo Bioassay to Assess the Estrogenic Potency of a Municipal Solid Waste Landfill Leachate in Qingdao

“…Chemical analysis can serve as a useful tool to identify a group of EEs in leachate, by which the possible source of these compounds can be investigated. In this study, 5 identified EEs (4- t -OP, BPA, D n BP, DEP, and DEHP) were detected in leachate samples collected from selected landfill sites, and high detection rates have been frequently reported for them in previous studies [11], [12], [17]. 4- t -OP is the most representative final breakdown product of alkylphenol polyethoxylates (APEOs), which are widely used as wetting and emulsion agents in industrial and household applications [33].…”

“…Chemical analysis is a rapid and sensitive screen to measure a large number of compounds. A variety of chemical analysis methods, such as gas chromatography-mass spectrometry (GC-MS) [11], [12], gas chromatography-flame ionization detector (GC-FID) [13], and high performance liquid chromatography (HPLC) [14], have been developed to identify estrogenic substances that potentially interfere with the reproductive system. Based on several combinations of instruments and detectors, the analytical results could provide excellent quantitative information of target compounds.…”

Endocrine-Disrupting Chemical Degradation in Hazardous Waste Using Microwave Peroxide Oxidation and Acid

“…Conventional treatment technologies for these EDCs in high-moisture sludge have limitations, hence needing more efforts on tackling complex wastewater treatment (Asakura and Matsuto, 2009). One of the promising technologies is the use of advanced oxidation processes (AOPs).…”