Search Results

1 - 10 of 145 items :

Clear All
Determination of Maximum Horizontal Distance (XMHD) Travelled by Landfill Leachate from Lapite Dumpsite in Ibadan, Southwestern Nigeria

References [1] Shao-gang Dong, Zhong-hua Tang, Bai-wei Liu, and O. D. Orodu, Numerical modeling of the environment impact of landfill leachate leakage on groundwater quality-A field application International Conference on Environmental Science and Information Application Technology. 2009: 565-568 [2] P.B Kjeldsen, M. A. Rooker, A. P. Baun, A. Ledin, A. and T. H Christensen, “Present and long-term composition of MSW landfill leachate: a review”, Critical Reviews in Environmental Science and Technology. 2002: 32, 297-336. [3] D. L. Jensen and T

Open access
Comparison of Landfill Leachate Treatment Efficiency Using the Advanced Oxidation Processes

References [1] Bergendahl, J., & O’Shaughnessy, J. (2004). Applications of advanced oxidation for wastewater treatment, International Business and Education Conference “A Focus on Water Management”, Worcester Polytechnic Institute, 2004. [2] Gau, S.H., & Chang, F.S. (1996). Improved Fenton method to remove recalcitrant organics in landfill leachate, Wat. Sci. Techn. , 34. [3] Lopes do Morais J., & Zamora, P.P. (2005). Use of advanced oxidation processes to improve the biodegradability of mature landfill

Open access
Geo-electrical assessment of coefficient of permeability and porosity of leachate plume at Asin dumpsite, Iwaro-oka, southwestern Nigeria

References [1] Hanson, D.L., & F.R., Caponi. (2009). US Landfill Disposal the Big Picture, The Journal for Municipal Waste Professional, Retrieved from: www.mswmanagement.com/elements-2009/us-landfill-disposal.aspx [2] ADEME. 2007 „Composition of Household Waste in France’ 2007. accessed online http://www2.ademe.fr/servlet/KBaseShow?sort=-1&cid=96&m=3&-catid=17571#tit1 [3] Chu, L.M., K.C. Cheung and M.H. Wong. 1994. Variations in the chemical properties of landfill leachate.Journal of Environmental management

Open access
Effectiveness of Removal of Humic Substances and Heavy Metals from Landfill Leachates During their Pretreatment Process in the SBR Reactor

. Wenzel A, Gahr A, Niessner R. TOC-removal and degradation of pollutants in the leachate using a thin-film photoreactor. Water Res. 1999;33:937-946. Monje-Ramirez I, Orta de Velasquez MT. Removal and transformation of recalcitrant organic matter from stabilized saline landfill leachates by coagulation-ozonation coupling processes. Water Res. 2004;38:2358-2366. Ketchum LH. Design and physical features of sequencing bath reactors. Water Sci Techn. 1997;35:11-18. Grabińska-Łoniewska A

Open access
An effect of liming on magnesium content in meadow vegetation and leachate water

Abstract

The aim of the study was to evaluate an effect of liming on chemical properties of the soil, magnesium content in the meadow vegetation and leachate water moving through the soil profile. The study was conducted in the growing seasons in the years 2012-2014. The study included three plots in two series: with lime and without lime. The plant material was subjected to dry digestion and ash was dissolved in HNO3 (1:3). The soil was mineralized in a muffle furnace and the ashes were dissolved in a mixture of HNO3 and HClO4 (3:1 v/v). In the obtained samples and in leaching water, estimated the content of phosphorus, potassium, magnesium and sodium by induction plasma emission spectrophotometer. In the soil content of assimilable phosphorus and potassium was determined by the Egner-Riehm method. The content of assimilable magnesium was determined by the Schachtschabel method and the pH of the soil by potentiometric method in water and in mol KC1·dm-3. Liming positively affected on soil pH and magnesium content in plants increasing its amount of about 15- 21% of dry matter with respect to not limed plots. In turn, lime fertilization negatively affected the content of magnesium in leachate water and the load eluted per unit area. Magnesium content in leachate water and the amount of loads eluted from limed plots were lower on average by 16-23% with respect to not limed plots.

Open access
The comparison of efficiency of Fenton and photo-Fenton treatment of stabilised landfill leachate / Porównanie efektywności oczyszczania odcieków z ustabilizowanego składowiska odpadów komunalnych w procesie Fentona i foto-Fentona

hybrid system UASB reactor - RO in landfill leachate treatment, Desalination, 222: 128-134. DĄBROWSKA B. DĄBROWSKI W. WÓJCIK W. 1999. Zmienność składu fizyczno-chemicznego odcieków ze składowisk odpadów, Inżynieria Środowiska, Uczelniane Wydawnictwo Naukowo-Techniczne Kraków tom 4,1: 143-151. GUPTA A. ZHAO R. NOVAK J. GOLDSMITH C.D. 2014, Application of Fenton’s reagent as a polishing step for removal of UV quenching organic constituents in biologically treated landfill leachates, Chemosphere, vol 105: 82-86. HE R. TIAN B

Open access
Application of UV/TiO2 Advanced Oxidation in Treating Oily Compost Leachate Generated During Oily Sludge Composting

Abstract

In this work, oily compost leachate (OCL) generated during oily sludge composting was treated by UV/TiO2. OCL subsamples, gathered bi-weekly from the composting process, were thoroughly mixed and then filtered to reduce the solution turbidity. The effects of initial chemical oxygen demand (COD) concentration, UV type (A and C), pH (3, 7, and 11), reaction time (30, 60, 90, and 120 min), and TiO2 concentration (0.5, 1, and 2 g L−1) on the total petroleum hydrocarbons (TPH) and COD removal from OLC were examined. The results showed that the efficiency of the process improved with the increase in TiO2 concentration and reaction time and the decrease in pH and pollutant concentration. In the optimal conditions (UV-C, TiO2 concentration of 1 mg L−1, reaction time of 90 min, and pH of 3), 52.29% of TPH was removed. Moreover, 36.69 and 48.3% of TPH was reduced by UV-A/TiO2 and UV-C/TiO2, respectively in real conditions of OCL (pH = 6.3, COD = 1501. 24 mg L−1, and TPH = 170.12 mg L−1) during the 90 min reaction time. The study verified that UV/TiO2 has the potential to be applied to treat OCL.

Open access
Treatment of industrial wastewater in the sequential membrane bioreactor

References [1] Sanguanpak S, Chiemchaisri C, Chiemchaisri W, Yamamoto K. Influence of operating pH of biodegradation performance and fouling propensity in membrane bioreactors for landfill leachate treatment. Int Biodeter Biodegr. 2015;102:64-72. DOI: 10.1016/j.ibiod.2015.03.024. [2] Liu Z, Wu W, Shi P, Guo J, Cheng J. Characterization of dissolved organic matter in landfill leachate during the combined treatment process of air stripping, Fenton, SBR and coagulation. Waste Manage. 2015;41:111-118. DOI: 10.1016/j.wasman.2015.03.044. [3] Directive

Open access
In Vitro Genotoxicity of Settat Town Landfill Leachate, Morocco

References Cabrera GL, Rodriguez DMG. Genotoxicity of leachates from a landfill using three bioassays. Mutat Res 1999;426:207--10. Jupsin H, Praet E, Vasel J-L. Caractérisation des lixiviats de CET et modélisation de leur évolution [Sanitary landfill characterization and modelisation of their evolution, in French]. In: Proceedings of the International Symposium on Environmental Pollution Control and Waste Management, 7--10 January 2002, Tunis (EPCOWM'2002) [displayed 25 May 2009]. Available at http

Open access
Removal of landfill leachate toxicity and genotoxicity by two treatment methods

References 1. Kjeldsen P, Barlaz MA, Rooker AP, Baun A, Ledin A, Christensen TH. Present and long-term composition of MSW landfill Leachate: a review. Crit Rev Environ Sci Technol 2002;32:297-336. doi: 10.1080/10643380290813462 2. Bortolotto T, Bertoldo JB, da Silveira FZ, Manganelli Defaveri T, Silvano J, Pich CT. Evaluation of the toxic and genotoxic potential of landfill leachates using bioassays.Environ Toxicol Pharmacol 2009;28:288-93. doi: 10.1016/j. etap.2009.05.007 3. Chandra S, Chauhan LK, Murthy RC

Open access