leachate Articles

  • Solving Toxicity Issue with Leachate - Case Study

    Toxicity of lanfills leachate is a big environmental concern and issue in Canada. The city of Riviere-du-Loup Has taken steps toward solving this environmental issue. Probiosphere is actually dealing with the issues and the results, so far are on target. We have clearly made the choice of selecting natural biodegradable ingredients to conduct this experiment. The use of natural product that allow ...


    By Probiosphere Inc.

  • Compatibility of Compacted Soils with Municipal Waste Combustion Ash Leachates

    Hydraulic conductivity values for three compacted soils were used as indices of compatibility of the soils with two municipal waste combustion (MWC) ash leachates. Specimens of the three soils were compacted to 90% of proctor compaction (ASTM D 693) in double-ring permeameters and permeated first with water (0.005 N CaSO4) and then with MWC ash leachate. The hydraulic conductivity values of the ...


    By ASTM International

  • Leach Tests on Lime-Treated Clays

    This paper describes the design, use, and results of a multiple leach-cell operation to test the changes in permeability and calcium removal of a lime-treated expansive clay under continuous water leaching. Seventy laboratory-prepared lime-treated clay specimens were subjected to continuous accelerated leaching for periods of 45 and 90 days with varying lime contents and compactive moisture ...


    By ASTM International

  • Leachability of Protein and Metals Incorporated into Aquatic Invertebrates: Are Species and Metals-Exposure History Important?

    Abstract  To partially simulate conditions in fish intestinal tracts, we leached six groups of metals-contaminated invertebrates at pH 2 and pH 7, and analyzed the concentrations of four metals (Cd, Cu, Pb, and Zn) and total protein in the leachates. Four of the groups of invertebrates were benthic macroinvertebrates collected from metals-contaminated rivers (the Clark Fork River in Montana ...


    By Springer-Verlag GmbH

  • Influence of magnetic treatment on the improvement of landfill leachate treatment

    Magnetic treatment is an alternative simple approach by which landfill leachate treatment could be improved. The purpose of landfill leachate treatment is to remove the Suspended Solids, Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD). Based on experiment by using circulation flowing system with a magnetic strength of 0.55 T, it was shown that the leachate quality could be ...


    By Inderscience Publishers

  • Photodegradation of organic matter in fresh garbage leachate using immobilized nano-sized TiO2 as catalysts

    Two immobilized nano-sized TiO2 catalysts, TiO2/activated carbon (TiO2/AC) and TiO2/silica gel (SG) (TiO2/SG), were prepared by the sol–gel method, and their use in the photocatalytic degradation of organic matter in fresh garbage leachate under UV irradiation was investigated. The influences of the catalyst dosage, the initial solution pH, ...


    By IWA Publishing

  • Leachate Storage Tanks

    Landfill leachate is a high concentration of the organic or inorganic liquid, which contains toxic substances and very corrosive, and one can never be too careful when storing such aggressive liquid. Comparing with other types of tanks, Center Enamel Glass-Fused-to-Steel tank is an exceptional solution for leachate storage, because of its excellent resistance to chemical corrosion and abrasion ...


    By Center Enamel

  • Municipal landfill leachate treatment by SBBGR technology

    The paper reports the results of a laboratory-scale investigation aimed at evaluating the performance of a periodic biofilter with granular biomass (SBBGR) for treating leachate coming from a mature municipal landfill. The results show that the SBBGR was able to remove roughly 80% of COD in leachate. The remaining 20% of COD were, therefore, presumably owing to the presence in the leachate of ...


    By Inderscience Publishers

  • Assessment of genotoxicity of landfill leachate by comet assay using golden pothos (Epipremnum aureum)

    Landfill leachate is a complex mixture of various inorganic and organic compounds. The possibility of using comet assay in relation to pollutant analysis for characterising genotoxicity of landfill leachate was studied. Golden pothos (Epipremnum aureum) was used as the biomonitor with comet assay. Polluted water of fresh and old leachates in different gradients was employed in the experiments. ...


    By Inderscience Publishers

  • Desorption kinetics and leaching study of arsenic from arsenite/arsenate-loaded Natural Laterite

    Desorption kinetics of arsenite- and arsenate-loaded Natural Laterite (NL) is performed under varying NaOH concentration (0.05-0.3 mol/L) and pH (4.0-11.0) of the desorption medium. The kinetic desorption data are well fitted to pseudo-second order kinetic model. The leaching of NL under aqueous medium is performed in the pH range of 2-12. Separately arsenite- and arsenate-loaded NL is leached ...


    By Inderscience Publishers

  • Field leaching of alkaline copper quaternary-treated red pine lumber over 3 years: long-term dynamics

    Alkaline copper quaternary (ACQ), a wood preservative, consists of copper oxide and quaternary ammonium compounds. Three red pine piles were monitored over 3 years to evaluate the dynamics of contaminant leaching from ACQ-treated and untreated lumber. There were small temporal changes in the volumetric leachate/rain ratio with the ACQ-treated lumber, while the volumetric ratio decreased across ...


    By IWA Publishing

  • Treatment of landfill leachate by effective microorganisms

    Five dominant strains, capable of treating leachate effectively, were isolated. The results showed that the removal efficiency of COD by using the mixed strains was higher than the pure strain, reaching 46.8%. The optimal inoculum concentration and the treatment time were 10.0% and 120 h respectively. The removal rate of COD reached the maximum at the temperature of 35°C and pH of 7.0. The ...


    By Inderscience Publishers

  • Ammonia Stripper Projects SITA - Case Study

    The project objective is to reduce ammonia in wastewater and leachate using patented technology developed by ...


    By Organics USA, Inc.

  • Effect of straw leachates from Cry1Ca‐expressing transgenic rice on the growth of Chlorella pyrenoidosa

    Because of the prevalence of algae in rice paddy fields, they will be exposed to Bacillus thurigiensis (Bt) proteins released from Bt protein‐expressing genetically engineered rice. To assess the effects of leachates extracted from Cry1Ca‐expressing transgenic rice (T1C‐19) straw on the microalga Chlorella pyrenoidosa, we added purified Cry1Ca (10, 100, 1000 µg/L) and five concentrations of ...


    By John Wiley & Sons, Ltd.

  • Effects of tannin source and concentration from tree leaves on two species of tadpoles

    Vegetation in and around freshwater ecosystems can affect aquatic organisms through production of secondary compounds, which are retained in leaves after senescence and are biologically active. Tannins can be toxic to tadpoles, but in previous studies the plant source of tannins and tannin concentration have been confounded in experimental designs. To examine the effects of the concentration ...


    By John Wiley & Sons, Ltd.

  • Electrochemical treatment of semi-aerobic landfill leachate using Response Surface Methodology (RSM)

    This research investigated the effectiveness of electrochemical treatment in treating semi-aerobic landfill leachate. The electrolytic reactor assembly included a pair of aluminium electrodes, a power supply and NaCl as electrolyte. The interactive effects of initial COD, current density and reaction time on treated leachate quality were studied. Regression equations were developed using ...


    By Inderscience Publishers

  • Leachate Treatment Solutions

    Given its complex and changing composition with age, treating leachate has proven particularly difficult. Since 2008, China has enforced new standards for the treatment and discharge of leachate. Jiarong Technology has tackled this problem head on, now serving most of the top solid waste management companies in China. From metropolises like Beijing, Shanghai and Shenzhen, to small counties, ...

  • Removal of COD and colour from old-landfill leachate by Advanced Oxidation Processes

    This research aims to apply Advanced Oxidation Processes (AOPs) using ozonation, combined O3/H2O2 and Fenton reaction for simultaneous COD and colour removal from old-landfill leachate. The efficiencies of the AOPs for both COD and colour removal could be ranked in this order; Fenton reaction > O3/H2O2 > O3. The Fenton reaction, operated at pH 3 could significantly remove more than 85% of colour ...


    By Inderscience Publishers

  • Landfill and Energy: A possible Combination Leachate and Distillation - Case Study

    Leachate is a product derived from the anaerobic transformation of the organic substances present in the waste. It is a liquid with different levels of pollutants present, the form and quantity of which will depend on factors such as the type of landfill, and the quantity of rainwater which filters through the landfill, mixing with the humidity of the waste itself. Due to the high level of ...

  • Performance of a Powdered Activated Carbon (PAC) Augmented Activated Sludge Process Treating Semi-Aerobic Leachate

    Semi-aerobic leachate is characterized by organic matter (COD, BOD) which is relatively low in concentration and difficult to biodegrade. In conventional treatment systems, the low biodegradability is attributed to partial stabilization of leachate at the landfill. Biological treatment of leachate in Malaysia is not well established and any important data for the treatment ...


    By University of Tehran

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