Methane Potential Articles on Environmental XPRT

Methane Mining

The Customer The Company is a global manufacturer of web handling, air flotation drying, process thermal management and emission control systems. They serve the web coating, printing, packaging and other industrial process markets. The Process The site is a coal mine that has been closed for a number of years, ostensibly because most or all of the ...

Oct. 5, 2013

By Control Instruments Corporation

Sewage sludge treatment: evaluation of the energy potential and methane emissions with COD balancing

Sewage sludge is an important resource for the generation of electricity and heat within a wastewater treatment plant (WWTP). Taking a holistic approach to such use involves considering the greenhouse gas emissions. In particular, for anaerobic sludge treatment, methane emissions are a matter of concern. Therefore, the utilization of a carbon balance, based on the chemical oxygen demand (COD), ...

Apr. 30, 2015

By IWA Publishing

Anaerobic digestion of macroalgae: methane potentials, pre-treatment, inhibition and co-digestion

In the present study we tested four macroalgae species – harvested in Denmark – for their suitability of bioconversion to methane. In batch experiments (53 °C) methane yields varied from 132 ml g volatile solids−1 (VS) for Gracillaria vermiculophylla, 152 ml g VS−1 for Ulva lactuca, 166 ml g VS−1 for Chaetomorpha linum and 340 ml g VS−1 for Saccharina ...

Jan. 1, 2011

By IWA Publishing

Organic waste biodegradability test bio methane potential method

Management Summary The biogas production from a mixture of food waste, garden waste, paper, napkins, plastic, metals and glass and anaerobically digested sludge was monitored until gas production had ceased. The homogenised biowaste mixture was subjected to two pre-treatment methods prior to being fed to the BMP reactors, these were: pasteurisation at 70oC ...

Dec. 20, 2014

By Cambi Group AS

Influence of conditioning agents and enzymic hydrolysis on the biochemical methane potential of sewage sludge

Biochemical methane potential (BMP) tests have been carried out on sewage sludge from two wastewater treatment plants to assess the effect of additives (FeCl3 and two cationic polyelectrolytes) used in sludge dewatering. BMP tests were also carried out on the concentrated solid phase from the enzymic hydrolysis pre-treatment (42 °C, 48 h). FeCl3 had no significant effect on ...

Oct. 18, 2013

By IWA Publishing

Enhanced stabilisation and methane potential of MSWs in a field-scale landfill with leachate recirculation

This study was carried out on two field scale test cells constructed at Odayeri Sanitary Landfill (OSL) located at the European side of Istanbul city. Approximately 11,000 tons of municipal solid wastes (MSW) were filled at equal quantities to each cell (C1 and C2). Leachate was periodically recirculated to one (C2) of the test cells in various quantities. These cells are compared in terms of ...

May 11, 2004

By Inderscience Publishers

Methane emission potential of open dumps in Chennai: a case study

Monitoring of atmospheric levels of methane and other Greenhouse Gases (GHGs) holds great promise for the mitigation of global warming resulting from increasing radioactive trapping by atmospheric gases. Since, the direct measurements of landfill methane emission found to be difficult, the methane emission potential of the open dumps in Chennai has been estimated using first–order decay models ...

Sep. 26, 2012

By Inderscience Publishers

Effect of methane generation potential and rate constant on the generation of methane from municipal solid waste landfill site: a case study

The methane generation potential L o and methane generation rate constant k are the two important parameters which have been used for methane generation evaluation. An attempt has been made in the present research paper to evaluate the methane generation at Pirana landfill site of Ahmedabad by varying the values of methane generation potential L ...

Oct. 1, 2013

By Inderscience Publishers

Comparison of the methane production potential and biodegradability of kitchen waste from different sources under mesophilic and thermophilic conditions

The methane production potential of kitchen waste (KW) obtained from different sources was compared through mesophilic and thermophilic anaerobic digestion. The methane yields (MYs) obtained with the same KW sample under different temperatures were similar, whereas the MYs obtained with different samples differed significantly. The highest MY obtained in S7 was 54%–60% higher than the lowest ...

Jan. 23, 2017

By IWA Publishing

The impact of potential climate policy on the coal bed methane investment in China - a real option–based study

In this paper, based on the real option theory, the impact of the potential climate policy on the coal bed methane (CBM) investment in China is assessed from the perspective of CBM investment under the uncertainties of future climate policy and CBM market price. The threshold values of the market and policy variables to promote CBM project investment are obtained. Firstly, incorporating the ...

May 29, 2014

By Inderscience Publishers

Assessing the role of biochemical methane potential tests in determining anaerobic degradability rate and extent

The biodegradability and bioavailability of hydrolysis-limited substrates under anaerobic (and aerobic) conditions can be represented by two key parameters – degradability (fd), or the percentage that can be effectively be destroyed during digestion, and first order hydrolysis coefficient (khyd), or the speed at which material breaks down. Biochemical methane potential (BMP) ...

Jan. 1, 2011

By IWA Publishing

Ozone pretreatment of olive mill wastewaters (OMW) and its effect on OMW biochemical methane potential (BMP)

The possibility of coupling a physicochemical pretreatment (ozonation) with a biological treatment (anaerobic digestion) was investigated for the case of olive mill wastewaters (OMW). Batch ozonation experiments were performed in a glass bubble reactor. The parameters which were tested included the ozone concentration in the inlet gas stream, the reactor temperature and the composition of the ...

Dec. 19, 2013

By IWA Publishing

Probiosphere Archaea for methane production study

The laboratory of wastewater treatment and methane production has been entrusted with the evaluation potential of Probiosphere product Archaea to stimulate biogaz production in anaerobic reactors. Three series of trials have been conducted in order to compare two fresh biomasses from two different Quebec biogaz production plants with the product Archaea: Fresh anaerobic biomass (F1) ...

Feb. 5, 2016

By Probiosphere Inc.

Methane Emissions From Terrestrial Plants

In a recent issue of Nature Keppler et al. [2006] report the discovery that terrestrial plants emit CH4 under aerobic conditions. Until now it was thought that bacterial decomposition of plant material under anaerobic conditions, such as in wetlands and water flooded rice paddies, is the main process leading to emissions from terrestrial ecosystems. In a first attempt to upscale these ...

Jan. 1, 2006

Case study - Coal mine to methane energy project

At the Oxbow Elk Creek Mine in Somerset, Colorado, methane was free vented from the mine for more than 100 years with an estimated $1 million per month of potential fuel being released into the atmosphere. Through a partnership with Aspen Skiing Company, the methane that was once vented into the atmosphere is now being used to generate electricity that is fed into the ...

Jul. 11, 2013

Compost as a landfill cover material for the elimination of methane emissions

Landfills, with about 40 - 60 Mio t emitted CH4 each year, are considered to be an important global source of the greenhouse gas methane. These emissions are especially caused by inadequate gas collection systems and uncontrolled emissions from old dumps and unauthorised open dumping. With traditional gas collection systems only 40 to 60 % of the produced gas can be collected and reused or safely ...

Jan. 2, 1999

By ORBIT e.V.

Puzzle remains over source of Amazonian methane

Remote sensing observations have shown high methane concentrations in the troposphere above tropical forests in Venezuela and Brazil and scientists claim to have measured significant amounts of methane being emitted aerobically from the leaves of plants during photosynthesis. Recent experiments have been unable to reproduce these controversial results. Detailed knowledge of the global atmospheric ...

Sep. 19, 2008

By European Commission, Environment DG

Coal Bed Methane - A Global Market Scenario

Coal Bed Methane (CBM) is a type of natural gas that is commonly extracted from coal beds located at depths between 300 to 1000 metres. This gas is an odorless, colorless mixture of a variety of gases, but with major share of methane – even upto 95% in many cases. Browse: Coal Bed Methane ...

Jul. 29, 2014

Potential contribution of the wastewater sector to energy supply

The biological treatment of wastewater could yield high energy fuels such as methane and alcohols, however most conventional treatment systems do not recover this energy potential. With a simple model of the energy yields of various wastewater treatment technologies it is possible to demonstrate how minor shifts in technology selection can lead the industry from being identified as predominantly ...

Jan. 1, 2011

By IWA Publishing

Methane production and hydrolysis kinetics in the anaerobic degradation of wastewater screenings

Anaerobic biodegradability and hydrolysis rates of wastewater screenings were determined using the biochemical methane potential test at 37 °C. The extent and rate of screenings conversion to methane of this complex and particulate substrate were investigated and since two stages of hydrolysis were identified, corresponding to the different types of materials in screenings, a linear and ...

Jul. 19, 2013

By IWA Publishing

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