Modelo Para Un Tanque Perfectamente Agitado Con Calentamiento’

JFUE 6331

No. of Pages 7, Model 5G

23 August 2012
Fuel xxx (2012) xxx–xxx
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Contents lists available at SciVerse ScienceDirect

Fuel
journal homepage: www.elsevier.com/locate/fuel

Biomethane production by anaerobic digestion of organic waste

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A. Molino a,⇑, F. Nanna a, Y. Ding b,⇑, B. Bikson b, G. Braccio a
a

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b

ENEA, National Agency for NewTechnologies, Energy and Sustainable Economic Development, UTTRI S.S. 106 Ionica, km 419+500, 75026 Matera, Italy
PoroGen Corporation, 6C Gill Street, Woburn, MA 01778, USA

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highlights

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" Production of biomethane from biogas produced from anaerobic digestion of organic matter.

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" Possibility to use biomethane in the grid injection.

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" Use of polymeric membrane forbiogas upgrading.

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" Cleaning biogas.

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article
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info

Article history:
Received 10 May 2012
Received in revised form 30 July 2012
Accepted 31 July 2012
Available online xxxx

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Keywords:
Biomethane
Anaerobic digestion
Biomass
Landfill gas
Organic waste

abstract
Anaerobic Digestion (AD) is abiological process that takes place naturally when bacteria break down
organic matter in environments with or without oxygen. Controlled anaerobic digestion of organic waste
in enclosed landfill will generate methane. Almost any organic material can be processed with AD, including waste paper and cardboard (of a grade that is too low to recycle because of food contamination), grass
clippings, leftoverfood, industrial effluents, sewage and animal waste. AD produces biogas which is comprised of around 60% methane (CH4) and 40% carbon dioxide (CO2). This biogas can be used to generate
heat or electricity and/or can be used as a vehicular fuel. If the intended use is for power generation the
biogas must be scrubbed to remove a number of impurities. After conditioning the biogas can be used foronsite power generation, to heat homes or can be added to the national natural gas grid. In recent years
several research groups have shown the possibility of upgrading the biogas for biomethane production
[1]. This study will show the feasibility of integrating anaerobic digestion plant with onsite polymeric
membrane purification system for conditioned biomethane production.
Ó 2012 Elsevier Ltd.All rights reserved.

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1. Introduction

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The anaerobic digestion is the technology that can convert the
agro-industrial waste chain, the municipal solid waste and/or
wastewater sludge into renewable energy. There are multiple characteristics that make this technology applicable to industrial energy generation processes.Nevertheless, improvements in both
environmental characteristics and overall process economics are
still required to make the technology acceptable broad base. An
important economic consideration is the fact that the biogas can
be produced at the biomass production site reducing transportation costs. The AD plants can be scaled down that makes the process ideal for rural area development. Thebiogas can be used in
a cogeneration system or used for biomethane production which
in turn can be sent to national natural gas network or used as a
biocombustible fuel in the automotive sector.

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⇑ Corresponding authors. Tel.: +39 (0)835 974736; fax: +39 (0)835 974210
(A. Molino).
E-mail address: antonio.molino@enea.it (A. Molino).The process of upgrading biogas realizes a carbon negative
chain because the biomethane substitutes the fossil natural gas
and the carbon dioxide can be captured and used in industrial processes [1].
The objective of the paper is the feasibility of a biomethane production plant from anaerobic digestion of organic waste and the
upgrading of biogas with polymeric membrane.

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2. The...