Abstract
In this study, properties of rice husk biochar and bamboo biochar are tested to evaluate their potential value as soil conditioners in combination with municipal solid waste incineration bottom ash from three different cities in southern Taiwan (cities of Pingtung, Chiayi, and Chunghua). From the results, it is possible to conclude that rice husk biochar pyrolized at 400°C may have a positive effect on the develop- ment and growth of Zea maize L., especially when mixed with bottom ash from Pingtung; with and without additions of fertilizer the treat- ments showed the best results in germination (100%) and plant weight. In addition, the conversion of organic waste to biochar may offer an attractive option for minimizing the volume of waste products by incorporating bottom ash with soil amendments. The highest increment percentage in biomass total weight in each system is with the treatment with 400°C pyrolized rice husk biochar; it has an increment percentage of 150 and 100% for Pingtung and Chunghua cities, respectively, without fertilizer, and 75-400% for Chiayi with fertilizer. DOI: 10.1061/ (ASCE)HZ.2153-5515.0000186. © 2013 American Society of Civil Engineers. CE Database subject headings: Municipal wastes; Solid wastes; Bottom ash; Mixtures; Agriculture; Organic matter; Taiwan; Recycling.
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