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Nutrient recovery using biochar and biofilm from piggery wastewater

Research Project

Project/Area Number 20K19994
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 64030:Environmental materials and recycle technology-related
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

Riya Shohei  東京農工大学, 工学(系)研究科(研究院), 准教授 (80725606)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords炭化物 / 活性汚泥 / メタン発酵 / アンモニア / リン酸 / 未利用資源 / 排水処理 / 廃棄物処理 / 栄養塩 / 豚糞尿 / メタン / 豚ふん尿 / 稲わら / 乾式メタン発酵 / アンモニウム / 吸着 / 養豚排水 / 生物膜 / 肥料 / 土壌
Outline of Research at the Start

本研究では、炭化物を生物学的排水処理の担体に使用し、排水処理性能の向上と、炭化物による肥料成分(栄養塩)の回収を目指す。排水処理の過程で、炭化物には排水中の栄養塩が吸着するとともに、炭化物上に微生物の集合体(生物膜)が形成されることが期待される。本研究では、この生物膜が形成された炭化物を排水処理後に、肥料として利用した際の肥料性能と、土壌からの温室効果ガス放出や硝酸溶脱など環境への悪影響を調べる。

Outline of Final Research Achievements

The aim of this study is to clarify fertilizer value of biofilm-immobilized biochar, which is obtained from the biochar-loaded nitrogenous wastewater treatment.Ammonium accumulation was observed in the biochar-sludge mixture in the biochar-loaded activated sludge treating artificial piggery wastewater. However, the ammonium recovery was only 4% of inflow. The low recovery may be due to the loss of nitrogen by nitrification and denitrification reaction.
We also evaluated the applicability of the biochar to anaerobic treatment with nutrient recovery by adsorption from the wastewater.Biochar produced from digestate of solid-state anaerobic digestion can adsorb both ammonium and phosphorus.Also, biochar-loaded solid state mono digestion of pig manure produced more methane than that without biochar.

Academic Significance and Societal Importance of the Research Achievements

アンモニウムなどの窒素を含んだ排水は現在、微生物を用いて窒素ガスに変換することで処理されている。一方、アンモニウムは肥料として利用できるので、排水から回収できれば資源のリサイクルができる。本研究では、未利用の資源である稲わらや発酵残渣などからアンモニウムやリン酸などの吸着材(炭化物)を作製した。炭化物は、アンモニウムなどの吸着回収だけでなく、排水・廃棄物の生物処理を効率化できることが分かった。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (8 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Environmental Loading in Pig Farming with Solid-state Anaerobic Digestion and High-yielding Rice Cultivation2021

    • Author(s)
      利谷 翔平, 周 勝, 細見 正明
    • Journal Title

      ENVIRONMENTAL SCIENCE

      Volume: 34 Issue: 1 Pages: 27-39

    • DOI

      10.11353/sesj.34.27

    • NAID

      130007978310

    • ISSN
      0915-0048, 1884-5029
    • Year and Date
      2021-01-31
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 乾式メタン発酵における原生動物の存在と役割の解明2023

    • Author(s)
      粕谷 大翔, 黒岩 恵, 安田 昌平, 寺田 昭彦, 利谷 翔平
    • Organizer
      化学工学会第88年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 乾式メタン発酵残渣炭化物による栄養塩の吸着特性評価2023

    • Author(s)
      崎原 洸太, 黒岩 恵, 安田 昌平, 寺田 昭彦, 利谷 翔平
    • Organizer
      化学工学会第88年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Prevention of ammonia inhibition in solid-state mono anaerobic digestion of pig manure using digestate biochar2023

    • Author(s)
      S. Riya, K. Ishida
    • Organizer
      4th International Conference for Bioresource Technology for Bioenergy, Bioproducts & Environmental Sustainability
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 炭化物の固相および溶存成分が土壌の亜酸化窒素生成・消費に及ぼす影響2022

    • Author(s)
      利谷翔平, 長谷川貴彬, 伊藤有里子, 寺田昭彦
    • Organizer
      日本土壌肥料学会2022年度東京大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Carbon and nitrogen balances in pyrolysis of solid-state anaerobic digestion resid2022

    • Author(s)
      S. Riya, R. Komura, H. Nasu, A. Terada
    • Organizer
      11th IWA International Symposium on Waste Management Problems in Agro-Industry
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Biochar application for stable solid-state anaerobic digestion2022

    • Author(s)
      S. Riya, L. Meng, A. Terada
    • Organizer
      International Congress on Pure & Applied Chemistry Kota Kinabalu 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 炭化物を用いた稲わらと豚糞尿乾式メタン発酵におけるアンモニア阻害の緩和2022

    • Author(s)
      石田 虎太朗・安田 昌平・黒岩 恵・寺田 昭彦・利谷 翔平
    • Organizer
      化学工学会第87年会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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