APOSTILA LFG PDF

Embed Size px x x x x Therefore, LFG offers a very attractive option to oil in this energystarved country [5]. The best way to remove the tracecomponents is via adsorption because the process is economical and. The reaction mechanism of primary and secondaryamine is almost similar.

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Embed Size px x x x x Therefore, LFG offers a very attractive option to oil in this energystarved country [5]. The best way to remove the tracecomponents is via adsorption because the process is economical and.

The reaction mechanism of primary and secondaryamine is almost similar. CO2 reacts with aqueous solutions of primaryand secondary amines, reaching equilibrium of carbamate, bicarbon-ate and carbonate.

Maximum absorption of CO2 occurs when all of theabsorbed gas exists as bicarbonate. The carbamate formation reactionsafe [8,9]. Also high gas quality is obtained. Ithese trace components because of their ha. Abbreviations: mm, millimeter; ppmv, parts per mil Corresponding author. Department of Chemical a. Yonsei University, Shinchon-dong, Seodaemun-guKorea. There are somemajor disadvantages which MEA suffers from like degradationthrough oxidation of amine, high enthalpy of reaction and someenergy resource which is produced in lananaerobic digestion of the organicmaterial coIn the present energy crisis scenalandll gas LFG are garnering hugeenergy potential due to the presencegreat source for energy production.

The waste managemeeffective as compared to other countrilandll sites in the world. There arcurrently in Korea [2] that offer a grearecovery methods forst. LFG has a very high-ane CH4 and thus is acountries have shownf landll gas to reducendll and to replace theicies in Korea are quiteea has one of the biggestlandll sites operating. There are many methods of removing the CO2 from the landll gas. Each process has its own advantages and disadvantages.

Here thefocus is on chemical absorption, which is very old and most suitablemethod for separating CO2 from other gases. Aqueous alkanolaminesare widely used absorbents for removal of CO2 and among themaqueous monoethanol amine MEA solution is the industrially mostimportant absorbent because of its rapid reaction rate, low cost,t is important to removermful effects on human.

Thegroup attached tAlkanolaminesreaction of CO2Both amines havworks [18] but mabsorption from. Introduction health and also due to corrosion caused by impurities like hydrocar-Landll gas LFG processing via adsorpti.

Methaneand alkanolamine absorption. Differentand chlorinated compounds were removed using granular activated carbon. After removingas fed to absorption apparatus for the removal of carbon dioxide CO2. DEA displayed a higher desorption rate and a better cyclic capacity asined from this process can be further used in the natural gas network for city.

Moreover, the amount of CO2 was around 5 to 15 vol. Mostly nitrogen was used along with CO2 insteadof CH4 [19]. The main objective of this study is tointegrate two technologies of gas separation one related to theremoval of trace components via adsorption and the other to theremoval of CO2 via absorption from LFG.

The remaining section in both ends of the column was lledwith bead type ceramic ball with 2 mm outside diameter to maintainthe uniform gas distribution and prevent the carryover of adsorbentparticles. The landll gas free from the trace components was fed tothe absorption apparatus. The apparatus consisted of a saturator and areactor. The gas obtained from the adsorption column was fed to thesaturator and afterwards passed to the reactor.

Around g of aminesolution was put into the reactor. The reactor was maintained at thetemperature of K using water thermostat during absorption. Thesystem was purged with nitrogen to remove any air from the system. A condenser was used to cool down the vapors of the solution. Apparent density g cm3 0. Gaur et al. Experimentaldiagram of the LFG extraction and collection into gasholder isrepresented in Fig.

The LFG was compressed to gasholder from anextraction well. The static pressure of the extraction well is around0. The moisture content of raw LFG was removed bypassing through cyclone type dehydrator and compressor. Thecompressor had 3 HP and compressed up to 50kgf cm2 in thegasholder. The dehumidied gas was then collected in the gasholder.

The composition of raw landll gas from extraction well is shown inTable 1 and found to have similar pattern with other reported data by[20]. The concentrations of themain components CH4 and CO2 are vol. There are three groups of toxiccomponents such as aromatics, chlorinated compounds and sulfurcompounds. The moisture content of raw landll gas was removedusing the cyclone type dehydrator and compressor. Among various adsorbent materials, activated carbon was selected,as it is a very versatile adsorbent.

They have a very large surface area,good micro porous structure, high adsorption capacity and high degreeof surface reactivity and it is cheaply available. The physical properties ofgranular activated carbon used in this study are shown in Table 2. Granular activated carbon is used in this study whose apparent densityis around 0.

The average pore diameter is between 1. Activated carbonwas obtained from Samchonli limited. Theaqueous solutions were prepared from doubly distilled water. Allsolutionswere prepared bymass with a balance precision of g.

See Full Reader. View Download 2 Category Documents. Kore t oppo bon, chlorinated Fuel Processing Technology 91 Contents lists available at ScienceDirect Fuel Processing j ourna l homepage: www. The best way to remove the tracecomponents is via adsorption because the process is economical and corrosion problem. Ithese trace components because of their ha Abbreviations: mm, millimeter; ppmv, parts per mil Corresponding author.

E-mail address: jwpark yonsei. LFG has a very high-ane CH4 and thus is acountries have shownf landll gas to reducendll and to replace theicies in Korea are quiteea has one of the biggestlandll sites operating reduces the operating life of boilers and combustion engines []. There are many methods of removing the CO2 from the landll gas like chemical absorption, adsorption and membrane separation []. Aqueous alkanolaminesare widely used absorbents for removal of CO2 and among themaqueous monoethanol amine MEA solution is the industrially mostimportant absorbent because of its rapid reaction rate, low cost,t is important to removermful effects on human of primary and smechanism.

Thegroup attached tAlkanolaminesreaction of CO2Both amines havworks [18] but mabsorption from lion by volume. Methaneand alkanolamine absorption n Song a, Jong-Jin Park a , Seodaemun-gu, Seoul , Republic of Koreaurthal , Haryana, India d to pure methane using the adsorption and absorption processes. All rights reserved.

Technology ev ie r. Materials and experimental methods 2. The raw landll gas 1. An Table 1Concentration of main and toxic trace components of landll gas. Property Granular Apparent density g cm3 0. Activated carbon and chemical absorbents Among various adsorbent materials, activated carbon was selected,as it is a very versatile adsorbent.

Analytical procedures Gas samples were taken from raw gas and product gases. Maingases CH4 and CO2 were quanti. Surficial LFG collection beneath geosynthetic Documents. Stirling, and landfill gas LFG to energy Documents. Section 7 Landfill Gas Hazard Assessment - epd. World Bank? Ambiental S.

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