Environmental Impact of Landfill Leachate and Its Remediation Using Advanced Biological Methods

2020 ◽  
pp. 65-76
Author(s):  
Isha Burman
Keyword(s):  
Environmental Impact ◽  
Landfill Leachate ◽  
Biological Methods

scholarly journals Treatment of landfill leachate with different techniques: an overview

2020 ◽  
Author(s):  
Amin Mojiri ◽  
John L. Zhou ◽  
Harsha Ratnaweera ◽  
Akiyoshi Ohashi ◽  
Noriatsu Ozaki ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
High Performance ◽  
Membrane Filtration ◽  
Combined Treatment ◽  
Oxygen Demand ◽  
Ammonium Oxidation ◽  
High Chemical ◽  
Treatment Techniques ◽  
High Chemical Oxygen Demand ◽  
Biological Methods

Abstract Landfill leachate is characterised by high chemical and biological oxygen demand and generally consists of undesirable substances such as organic and inorganic contaminants. Landfill leachate may differ depending on the content and age of landfill contents, the degradation procedure, climate and hydrological conditions. We aimed to explain the characteristics of landfill leachate and define the practicality of using different techniques for treating landfill leachate. Different treatments comprising biological methods (e.g. bioreactors, bioremediation and phytoremediation) and physicochemical approaches (e.g. advanced oxidation processes, adsorption, coagulation/flocculation and membrane filtration) were investigated in this study. Membrane bioreactors and integrated biological techniques, including integrated anaerobic ammonium oxidation and nitrification/denitrification processes, have demonstrated high performance in ammonia and nitrogen elimination, with a removal effectiveness of more than 90%. Moreover, improved elimination efficiency for suspended solids and turbidity has been achieved by coagulation/flocculation techniques. In addition, improved elimination of metals can be attained by combining different treatment techniques, with a removal effectiveness of 40–100%. Furthermore, combined treatment techniques for treating landfill leachate, owing to its high chemical oxygen demand and concentrations of ammonia and low biodegradability, have been reported with good performance. However, further study is necessary to enhance treatment methods to achieve maximum removal efficiency.

A novel thermodynamic approach for the complexation study of toxic metal cations by a landfill leachate

2018 ◽  
Vol 42 (10) ◽  
pp. 7640-7648 ◽  
Author(s):  
Salvatore Cataldo ◽  
Gabriele Lando ◽  
Demetrio Milea ◽  
Santino Orecchio ◽  
Alberto Pettignano ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Environmental Impact ◽  
Metal Ions ◽  
Landfill Leachate ◽  
Toxic Metal ◽  
Metal Cations ◽  
Thermodynamic Approach ◽  
Toxic Metal Ions ◽  
Solution Behaviour ◽  
Humic Fraction

The leachate humic fraction is a good sequestering agent towards toxic metal ions, influencing their aqueous solution behaviour and their environmental impact.

DEGRADATION OF CRUDE OIL ENHANCED BY COMMERCIAL MICROBIAL CULTURES

1997 ◽  
Vol 1997 (1) ◽  
pp. 995-996 ◽  
Author(s):  
Salvador Aldrett ◽  
James S. Bonner ◽  
Thomas J. McDonald ◽  
Marc A. Mills ◽  
Robin L. Autenrieth
Keyword(s):  
Environmental Impact ◽  
Crude Oil ◽  
Laboratory Study ◽  
Biological Markers ◽  
Cost Efficiency ◽  
Oil Spills ◽  
North Slope ◽  
Standard Methods ◽  
Microbial Cultures ◽  
Biological Methods

ABSTRACT Remediation and cleanup of oil spills has been attempted using different technologies. Biological methods such as bioremediation have been favored over others due to their cost efficiency and their low environmental impact. Bioremediation of Alaska North Slope crude oil was effectively attempted in a laboratory study using 13 commercial products. The products containing the microorganisms were provided by different vendors. The treatments were tested over a 28-day period, and the samples were extracted and analyzed using standard methods. After 28 days, four products showed an effective enhancement of the bioremediation process: the saturate fraction was degraded approximately 80%, and the aromatic fraction was degraded approximately 70%. Biological markers such as pristane, phytane, and C30 hopane were partially degraded.

Decreasing environmental impact of landfill leachate treatment by MBR, RO and EDR hybrid treatment

2020 ◽  
pp. 1-15 ◽  
Author(s):  
Judit Ribera-Pi ◽  
Marina Badia-Fabregat ◽  
Jose Espí ◽  
Frederic Clarens ◽  
Irene Jubany ◽  
...  
Keyword(s):  
Environmental Impact ◽  
Landfill Leachate ◽  
Leachate Treatment ◽  
Hybrid Treatment

Effect of Culture Technique of Ganoderma Australe Mycelia on Percentage Removal of Leachate Organics

2016 ◽  
Vol 13 (1) ◽  
pp. 131
Author(s):  
Wan Razarinah Wan Abdul Razak ◽  
Noor Zalina Mahmood ◽  
Noorlidah Abdullah
Keyword(s):  
Landfill Leachate ◽  
Oxygen Demand ◽  
White Rot Fungi ◽  
Culture Technique ◽  
Biological Oxygen Demand ◽  
White Rot ◽  
Toxic Substances ◽  
Percentage Removal ◽  
Ganoderma Australe ◽  
Biological Methods

Leachate (liquid pollutant), which is highly contaminated with organic matter and toxic substances is a major problem that arised from landfill. Biological methods have proven to be effective to remove organic matters that are abundant in leachate. This study is intended to compare the used of free mycelia and immobilized mycelia of the white-rot fungi, Ganoderma australe for the  removal of landfill leachate organics. The organics fraction of landfill leachate was measured by biological oxygen demand (BOD5), and chemical oxygen demand (COD). The experiment revealed that free mycelia of G. australe showed capability in removing leachate BOD5  but not COD. However, the use of immobilized G. australe displayed the best result in the removal of BOD5 and COD leachate after 4 weeks of treatment in flasks with 93.09% and 17.84% percentage removal of BOD5 and COD, respectively. Therefore, G. australe can be considered potentially useful in the treatment of landfill leachate as they can help in removing BOD and COD due to their biodegradative abilities.

scholarly journals Study of Biological Methods in Landfill Leachate Treatment

2017 ◽  
Vol 07 (09) ◽  
pp. 568-580 ◽  
Author(s):  
Parna Eskandari Payandeh ◽  
Naser Mehrdadi ◽  
Parisa Dadgar
Keyword(s):  
Landfill Leachate ◽  
Leachate Treatment ◽  
Biological Methods

Industrial solid waste landfill leachate treatment using electrocoagulation and biological methods

2017 ◽  
Vol 68 ◽  
pp. 137-142 ◽  
Author(s):  
Dheeravath Bhagawan ◽  
Saritha Poodari ◽  
Narala Chaitanya ◽  
Surya Ravi ◽  
Yamuna M. Rani ◽  
...  
Keyword(s):  
Solid Waste ◽  
Landfill Leachate ◽  
Leachate Treatment ◽  
Waste Landfill ◽  
Industrial Solid Waste ◽  
Biological Methods

Effect of Culture Technique of Ganoderma Australe Mycelia on Percentage Removal of Leachate Organics

2016 ◽  
Vol 13 (1) ◽  
pp. 131 ◽  
Author(s):  
Wan Razarinah Wan Abdul Razak ◽  
Noor Zalina Mahmood ◽  
Noorlidah Abdullah
Keyword(s):  
Landfill Leachate ◽  
Oxygen Demand ◽  
White Rot Fungi ◽  
Culture Technique ◽  
Biological Oxygen Demand ◽  
White Rot ◽  
Toxic Substances ◽  
Percentage Removal ◽  
Ganoderma Australe ◽  
Biological Methods

Leachate (liquid pollutant), which is highly contaminated with organic matter and toxic substances is a major problem that arised from landfill. Biological methods have proven to be effective to remove organic matters that are abundant in leachate. This study is intended to compare the used of free mycelia and immobilized mycelia of the white-rot fungi, Ganoderma australe for the  removal of landfill leachate organics. The organics fraction of landfill leachate was measured by biological oxygen demand (BOD5), and chemical oxygen demand (COD). The experiment revealed that free mycelia of G. australe showed capability in removing leachate BOD5  but not COD. However, the use of immobilized G. australe displayed the best result in the removal of BOD5 and COD leachate after 4 weeks of treatment in flasks with 93.09% and 17.84% percentage removal of BOD5 and COD, respectively. Therefore, G. australe can be considered potentially useful in the treatment of landfill leachate as they can help in removing BOD and COD due to their biodegradative abilities.

scholarly journals Biological Methods in Biodiesel Production and Their Environmental Impact

2021 ◽  
Vol 11 (22) ◽  
pp. 10946
Author(s):  
Krzysztof Biernat ◽  
Anna Matuszewska ◽  
Izabela Samson-Bręk ◽  
Marlena Owczuk
Keyword(s):  
Environmental Impact ◽  
Ghg Emissions ◽  
Biodiesel Production ◽  
Alternative Methods ◽  
Higher Alcohol ◽  
Molar Ratios ◽  
Base Catalysts ◽  
Acid And Base ◽  
Lower Temperature ◽  
Biological Methods

This publication presents the technologies of enzymatic biodiesel production in comparison to the conventional methods using acid and base catalysts. Transesterification with conventional catalysts has some disadvantages, and for this reason, alternative methods of biodiesel production have been investigated. These solutions include the replacement of chemical catalysts with biological ones, which show substrate specificity in relation to fats. Replacing chemical with biological catalysts causes elimination of some disadvantages of chemical processes, for instance: high temperatures of reaction, problematic process of glycerol purification, higher alcohol-to-oil molar ratios, and soap formation. Moreover, it causes operational cost reduction and has a positive environmental impact. This is due to the lower temperature of the process, which in turn translates into lower cost of equipment and lower GHG emissions associated with the need to provide less heat to the process. The increase of biofuels’ demand has led to the technology of enzymatic biodiesel production being constantly being developed. This research mainly focuses on the possibility of obtaining cheaper and more effective biocatalysts, as well as increasing the durability of enzyme immobilization on different materials.

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