Anaerobic transformation of biodegradable waste; Simultaneous production of energy and fertilizer

Amirhossein Malakahmad, Syazana Nasrudin, Noor Ezlin Ahmad Basri, Shahrom Md Zain

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Almost 40% of the total waste produced in developing countries is made of biodegradable waste. Typically the waste including the biodegradable portion is transported to the so-called landfills without any segregation process, treatment and utilization in advance. Although mitigation practices such as source reduction, reuse and recycle are essential and required to be practiced in any integrated waste management plan, one of the best approaches to reduce the volume of the waste goes to the landfills is biological transformation. Biological transformation of waste occurs in two major categories; aerobic and anaerobic biodegradation. Anaerobic transformation of biodegradable waste produces methane gas (CH4) which is the valuable source of energy. At first the gas has some impurities such as CO2 and other trace materials which are required to be removed from the main stream before utilization. In addition to methane, the byproduct of the anaerobic process is slurry that can be used as soil amendment agent. It contains several vital elements such as nitrogen, phosphorous and potassium (N, P and K) for crops. The quality of slurry is required to be assessed since it affects the soil conditions and plants growth. In this study the importance of biological transformation in waste management systems has been discussed. Different methods and significant factors in methane production via anaerobic digestion have been highlighted and finally, the criteria of produced fertilizer have been elaborated.

Original languageEnglish
Pages (from-to)113-119
Number of pages7
JournalAmerican Journal of Environmental Sciences
Volume9
Issue number2
DOIs
Publication statusPublished - 2013

Fingerprint

Fertilizers
fertilizer
energy
Methane
methane
Waste management
Land fill
slurry
waste management
landfill
Soils
Anaerobic digestion
soil amendment
Biodegradation
Gases
Developing countries
gas
Chemical elements
Crops
Byproducts

Keywords

  • Integrated waste management
  • Methane
  • Slurry quality control

ASJC Scopus subject areas

  • Pollution
  • Ecology

Cite this

Anaerobic transformation of biodegradable waste; Simultaneous production of energy and fertilizer. / Malakahmad, Amirhossein; Nasrudin, Syazana; Ahmad Basri, Noor Ezlin; Md Zain, Shahrom.

In: American Journal of Environmental Sciences, Vol. 9, No. 2, 2013, p. 113-119.

Research output: Contribution to journalArticle

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