Effect of leachate irrigation on methane oxidation in tropical landfill cover soil

Chiemchaisri, Chart; Chiemchaisri, Wilai; Chittanukul, Kittipon; Soontornlerdwanich, Wiwattana; Tanthachoon, Nathiya

doi:10.1007/s10163-009-0284-y

Cited by 19 publications

(8 citation statements)

References 15 publications

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“…Regional settlements are widely scattered, there are financial constraints and there are objections from nearby settlers 1. Several studies have been conducted dealing with the generation and treatment of leachate 2–9. The presence and treatment of hazardous materials in leachate like heavy metals and volatile organic compounds which may escape into surrounding water bodies like rivers have also been studied 10–14.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of Phenylalanine Ammonia‐Lyase on Single‐Walled Carbon Nanotubes for Stereoselective Biotransformations in Batch and Continuous‐Flow Modes

et al. 2015

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Carboxylated single‐walled carbon nanotubes (SwCNTCOOH) were used as a support for the covalent immobilization of phenylalanine ammonia‐lyase (PAL) from parsley by two different methods. The nanostructured biocatalysts (SwCNTCOOH‐PALI and SwCNTCOOH‐PALII) with low diffusional limitation were tested in the batch‐mode kinetic resolution of racemic 2‐amino‐3‐(thiophen‐2‐yl)propanoic acid (1) to yield a mixture of (R)‐1 and (E)‐3‐(thiophen‐2‐yl)acrylic acid (2) and in ammonia addition to 2 to yield enantiopure (S)‐1. SwCNTCOOH‐PALII was a stable biocatalyst (>90 % of the original activity remained after six cycles with 1 and after three cycles in 6 m NH3 with 2). The study of ammonia addition to 2 in a continuous‐flow microreactor filled with SwCNTCOOH‐PALII (2 m NH3, pH 10.0, 15 bar) between 30–80 °C indicated no significant loss of activity over 72 h up to 60 °C. SwCNTCOOH‐PALII in the continuous‐flow system at 30 °C was more productive (specific reaction rate, r flow=2.39 μmol min−1 g−1) than in the batch reaction (r batch=1.34 μmol min−1 g−1).

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Section: Introductionmentioning

confidence: 99%

Immobilization of Phenylalanine Ammonia‐Lyase on Single‐Walled Carbon Nanotubes for Stereoselective Biotransformations in Batch and Continuous‐Flow Modes

et al. 2015

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“…To cope with this constraint, salt-tolerant vegetation should be used, and the optimum leachate loading should be provided to sustain CH 4 oxidation in landfill operation (Humer and Lechner, 2000). Chiemchaisri et al (2010) also reported beneficial effect of plants on landfill cover provided that leachate loading was properly controlled.…”

Section: Enhancement Of Methane Oxidationmentioning

confidence: 93%

“…Furthermore, this operation is advantageous in reducing leachate concentration and pollutant loading from the landfill. Chiemchaisri et al (2010) studied the effect of leachate irrigation on methane oxidation in tropical landfill cover soil and reported that methane oxidation rate could be enhanced by providing optimal nutrients through leachate irrigation. Intermittent application and controlled organic loading onto the cover soil are the key factors leading to improved microbial activities.…”

Section: Enhancement Of Methane Oxidationmentioning

confidence: 99%

Reduction of Methane Emission From Landfill Through Microbial Activities in Cover Soil: A Brief Review

Chiemchaisri

Kumar

et al. 2012

Critical Reviews in Environmental Science and Technology

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Scientifically designed landfill or open dumpsites are used for disposal of municipal solid waste (MSW) in many developed and developing countries. These two systems pose two environmental challenges such as generation of landfill leachate and emission of greenhouse gases (GHGs). Because the GHG emission has been considered to be a global threat, various options have been tried to mitigate the emission of GHGs, especially methane (CH 4 ). The capture and disposal of the landfill gas (LFG) emanating from landfills is technically difficult and costly. The conventional methods for reducing LFG consist of flaring or combustion with energy recovery in engines. Due to the technical difficulties and/or high cost associated with these conventional possibilities, many other alternatives are being investigated. Among these, microbial oxidation of CH 4 stands as a cost-effective candidate to minimize the GHG emission from landfills to the atmosphere. Many researchers have worked in this area and the results are encouraging. This paper is an attempt to review this candidate.

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“…High rainfall intensity significantly affects the increasing moisture content in solid waste subsequently in a higher volume of landfill leachates [3]. Because the discharge standard is becoming more and more stringent, which requires advance treatment alternatives for leachates, a combination of physical-chemical and biological methods is essential for the efficient treatment of a leachate [4]. Because there are fewer limitations for membrane technology for high organic loading waste treatment [5], in this study, the Inclined Tube Membrane Bioreactor-Reverse Osmosis process or the itMBR-RO was designed to be applied to treat the high strength of leachates such as a fresh leachate from newer landfills and seepage leachate found in waste transfer stations, known as some of the most concentrated organic wastewater [5].…”

Section: Introductionmentioning

confidence: 99%

Chemical characterization in correlation to toxicity evaluation for water reuse of solid waste leachates in the itMBR-RO system

Polngam

Chiemchaisri

Kaewmanee

et al. 2014

J Mater Cycles Waste Manag

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This research investigates chemical characterization and toxicity evaluation of solid waste leachates along operating treatment units of the itMBR-RO (inclined tubes membrane bioreactor-reverse osmosis) system. Leachates from solid waste disposal sites contain high pollutant concentrations that pose acute toxicity effects on living organisms. Overall treatment processes could reduce COD, ammonia nitrogen and heavy metals by [99, [99 and [97 %, respectively. The xenobiotic compounds can be effectively removed (83.2-100 %) with the itMBR-RO system. 96 h of toxicity tests revealed that not only was NH 3 toxic to the Nile Tilapia (Oreochromis niloticus), there were other pollutants in the leachate synergy such as COD, nitrite and conductivity. Nitrite was the most potent pollutant in the MBR-treated leachates giving an acute toxic effect in combination with ammonia. In conclusion, the itMBR-RO system could completely eliminate acute toxicity of the solid waste leachates; although a few toxic organic compounds still remained in the RO permeate i.e. DEHP, hexadecanoic acid and phenol, 2, 4-bis-(tert-butyl).

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Effect of leachate irrigation on methane oxidation in tropical landfill cover soil

Cited by 19 publications

References 15 publications

Immobilization of Phenylalanine Ammonia‐Lyase on Single‐Walled Carbon Nanotubes for Stereoselective Biotransformations in Batch and Continuous‐Flow Modes

Immobilization of Phenylalanine Ammonia‐Lyase on Single‐Walled Carbon Nanotubes for Stereoselective Biotransformations in Batch and Continuous‐Flow Modes

Reduction of Methane Emission From Landfill Through Microbial Activities in Cover Soil: A Brief Review

Chemical characterization in correlation to toxicity evaluation for water reuse of solid waste leachates in the itMBR-RO system

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