Engineered Nanomaterials for Landfill Leachate Treatment in the Humid Tropics: The Sri Lankan Perspective

2014 ◽  
pp. 786-803
Keyword(s):  
Landfill Leachate ◽  
Humid Tropics ◽  
Engineered Nanomaterials ◽  
Sri Lankan ◽  
Leachate Treatment

scholarly journals Application of Electrocoagulation with a New Steel-Swarf-Based Electrode for the Removal of Heavy Metals and Total Coliforms from Sanitary Landfill Leachate

2021 ◽  
Vol 11 (11) ◽  
pp. 5009
Author(s):  
Mayk Teles de Oliveira ◽  
Ieda Maria Sapateiro Torres ◽  
Humberto Ruggeri ◽  
Paulo Scalize ◽  
Antonio Albuquerque ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Landfill Leachate ◽  
Lower Cost ◽  
Sanitary Landfill ◽  
Leachate Treatment ◽  
Removal Of Heavy Metals ◽  
Waste Characteristics ◽  
Electrode Passivation ◽  
Steel Swarf ◽  
Sanitary Landfill Leachate

Sanitary landfill leachate (LL) composition varies according to climate variables variation, solid waste characteristics and composition, and landfill age. Leachate treatment is essentially carried out trough biological and physicochemical processes, which have showed variability in efficiency and appear a costly solution for the management authorities. Electrocoagulation (EC) seems a suitable solution for leachate treatment taking into account the characteristics of the liquor. One of the problems of EC is the electrode passivation, which affects the longevity of the process. One solution to this problem could be the replacement of the electrode by one made of recyclable material, which would make it possible to change it frequently and at a lower cost. The objective of the present work was to evaluate the removal of heavy metals (As, Ba, Cd, Cr, Cu, Fe, Pb, Mn, Ni, Se and Zn) and coliforms from a LL by EC using electrodes made from steel swarf (SfE) up to 8 h. Removal efficiencies of detected heavy metals were 51%(Cr), 59%(As), 71%(Cd), 72%(Zn), 92%(Ba), 95%(Ni) and >99%(Pb). The microbial load of coliforms in leachate was reduced from 10.76 × 104 CFU/mL (raw leachate) to less than 1 CFU/mL (after treatment with SfE) (i.e., approximately 100% reduction). The use of SfE in EC of LL is very effective in removing heavy metals and coliforms and can be used as alternative treatment solution for such effluents.

The evolving trends of landfill leachate treatment research over the past 45 years

2021 ◽  
Author(s):  
Mir Amir Mohammad Reshadi ◽  
Sajad Soleymani Hasani ◽  
Morteza Nazaripour ◽  
Gordon McKay ◽  
Alireza Bazargan
Keyword(s):  
Landfill Leachate ◽  
Leachate Treatment ◽  
The Past ◽  
Treatment Research

Landfill leachate treatment by electrocoagulation: Effects of current density and electrolysis time

2020 ◽  
Vol 8 (5) ◽  
pp. 104368
Author(s):  
Neanderson Galvão ◽  
Jeanette Beber de Souza ◽  
Carlos Magno de Sousa Vidal
Keyword(s):  
Current Density ◽  
Landfill Leachate ◽  
Electrolysis Time ◽  
Leachate Treatment

scholarly journals Characterizing Seasonal Variation in Landfill Leachate Using Leachate Pollution Index (LPI) at Nam Son Solid Waste Landfill in Hanoi, Vietnam

Environments ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 17
Author(s):  
Son Tran Hoai ◽  
Huong Nguyen Lan ◽  
Nga Tran Thi Viet ◽  
Giang Nguyen Hoang ◽  
Ken Kawamoto
Keyword(s):  
Environmental Pollution ◽  
Landfill Leachate ◽  
Pollution Index ◽  
Temporal Variations ◽  
Inorganic Pollutants ◽  
Landfill Leachates ◽  
Leachate Treatment ◽  
Waste Landfill ◽  
Permissible Limits ◽  
Leachate Pollution Index

The improper treatment of landfill leachates is one of the major problems associated with waste landfilling and causes serious environmental pollution at waste landfill sites and their surroundings. To develop a suitable landfill leachate treatment system and to minimize the risk of environmental pollution, it is important to characterize seasonal and temporal variations of landfill leachates. This study investigated the leachate quality of the Nam Son waste landfill in Hanoi, Vietnam in 2017–2019 and characterized the potential risks of landfill leachate using a leachate pollution index (LPI). The results of this study showed that the seasonal and temporal variation of the overall LPI during the monitoring period was small and in the range of 20–25 (values 2.5 times higher than the maximum permissible limits of Vietnam National Technical Regulation on Industrial Wastewater). The LPI sub-indices attributed to organic and inorganic pollutants were major components of the LPI. Especially, the annually averaged values of LPI of inorganic pollutants were 7.7 times higher than the maximum permissible limits, suggesting that the treatment of inorganic pollutants, such as ammonium-nitrogen (NH4+–N) and total nitrogen (TN), is highly required at Nam Son landfill to prevent environmental pollution surrounding the landfill site.

scholarly journals Mature landfill leachate treatment by denitrification and ozonation

2011 ◽  
Vol 46 (1) ◽  
pp. 148-153 ◽  
Author(s):  
Susana Cortez ◽  
Pilar Teixeira ◽  
Rosário Oliveira ◽  
Manuel Mota
Keyword(s):  
Landfill Leachate ◽  
Leachate Treatment ◽  
Mature Landfill Leachate

The application of hybrid system UASB reactor-RO in landfill leachate treatment

Desalination ◽  
2008 ◽  
Vol 222 (1-3) ◽  
pp. 128-134 ◽  
Author(s):  
Jolanta Bohdziewicz ◽  
Anna Kwarciak
Keyword(s):  
Hybrid System ◽  
Landfill Leachate ◽  
Uasb Reactor ◽  
Leachate Treatment
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