Physico-Chemical Properties of Distillation Wastes from Bio-Ethanol Production and their Potential for Arable Land Application

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  • TANI Masayuki
    Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine
  • KATO Taku
    Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine
  • MIYATAKE Fumihito
    Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine
  • KOIKE Masanori
    Department of Agro-Environmental Science, Obihiro University of Agriculture and Veterinary Medicine
  • TOKUYASU Ken
    National Food Research Institute, National Agriculture and Food Research Organization

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Other Title
  • バイオエタノール蒸留廃液の成分特性と圃場還元利用のポテンシャル
  • バイオエタノール ジョウリュウ ハイエキ ノ セイブン トクセイ ト ホジョウ カンゲン リヨウ ノ ポテンシャル

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Abstract

Physico-chemical properties and fertilizer components of distillation wastes, discharged from bio-ethanol production, were investigated to evaluate their potential for arable land application. In this study, characteristics of organic matter and dissolved humic substances in the distillation wastes and effects of waste application on crop growth and quality through pot experiment were also investigated. The distillation wastes from bio-ethanol production contained high concentration of fertilizer nutrients which might be available for crops as same as shochu distillation wastes, of which concentration and composition were distinctly influenced by raw materials. The wastes were also rich in easily decomposable organic matter, which could be biodegraded rapidly in soils, while they included a large amount of colored matter and humic substances in the liquid fraction, of which properties were strongly affected by raw materials and manufacturing processes. Waste application for spinach in the pot experiment indicated that the wastes were effective to supply alternative fertilizer nutrients. The inhibitive effects of the waste application on crop growth and quality were not observed. Subsequent effects of colored matter and humic substances on crop and environment, and alternative effects of the distillation wastes upon field application should be clarified.

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