Solid waste generation and decomposition using compost bin technique in Pulau Pinang, Malaysia.

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2012
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Abstract
Solid waste comprised of a grass clippings mixture was decomposed using a locally-made compost bin in Pulau Pinang, Malaysia, to eliminate challenges associated with improper waste disposal. Bulk density, pH, moisture content, nutrients content, nitrogen (N), phosphorus (P), potassium (K), iron (Fe), zinc (Zn), copper (Cu) and carbon/nitrogen (C/N) ratio were determined over 77 days. A 34% reduction in compost bin volume was observed and bulk density and pH were also reduced from 732 to 482 kg m(-3) and 7.82 to 8.41, respectively, indicating fairly good performance. The final moisture content and C/N ratio were 44.06% and 14 : 1, respectively, and the results also showed that the presence of nutrients and heavy metals in the final compost were within acceptable limits for use as a soil conditioner. Final concentrations of N, P and K were 347 mg kg(-1), 510 mg kg(-1) and 14.8 g kg(-1) and for heavy metals, Fe, Zn and Cu were 5308, 300 and 20 mg kg(-1), respectively, which considerably assisted in the decomposition process. Processed waste materials from the bin were shown to be excellent organic fertilizers with over 75% germination index for seeds grown into bean sprouts in 72 h. An improved bin design to eliminate greenhouse gas emission into the environment is suggested.
Reference Key
akinbile2012solidwaste Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Akinbile, Christopher O;Yusoff, Mohd Suffian;
Journal Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA
Year 2012
DOI 10.1177/0734242X11417974
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Keywords
Capacity Management impacts research ranking solid waste global trend predictions

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