Algae-supplemented anaerobic biofilters enable nutrient recovery from agricultural runoff and atmospheric carbon capture
藻類を添加した嫌気性バイオフィルターによる農業排水からの栄養塩回収と大気炭素回収 (AI 翻訳)
Otuo-Akyompong Boakye, Ebun Maria Omole-Ohonsi, Nagagopi Pesarlanka, Laibin Huang, Annesh Borthakur
🤖 gxceed AI 要約
日本語
農業排水からの栄養塩除去と回収を目的として、藻類を添加した嫌気性バイオフィルターを開発。脱窒と藻類吸収により硝酸およびリン酸を除去し、同時に大気中のCO2を固定する。システムは水処理、栄養塩回収、炭素回収を統合し、持続可能な農業と循環型経済に貢献する。
English
This study develops algae-supplemented anaerobic biofilters to remove and recover nutrients from agricultural runoff while capturing atmospheric CO2. Denitrification removes nitrate, algae recover phosphate and nitrogen, and algae sequester CO2. The system integrates water treatment, nutrient recovery, and carbon capture for sustainable agriculture.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では農業排水による富栄養化が問題となっており、栄養塩回収技術は循環型農業の推進に貢献する。ただし、本論文はラボスケールの基礎研究であり、実用化にはさらなる検証が必要。
In the global GX context
This paper presents a novel biofilter that combines nutrient recovery and carbon capture, relevant to sustainable agriculture and circular economy. While not directly addressing corporate disclosure or transition finance, it offers a nature-based solution for carbon removal and nutrient recycling.
👥 読者別の含意
🔬研究者:This study demonstrates a combined nutrient recovery and carbon capture system using algae in biofilters, offering a nature-based solution for agricultural runoff.
🏢実務担当者:Provides a potential technology for on-farm water treatment and nutrient recycling, but requires scale-up assessment.
🏛政策担当者:Supports circular agriculture and carbon removal, but further field validation needed.
📄 Abstract（原文）
Nutrient pollution by agricultural runoff causes eutrophication in surface water bodies. However, nutrients can be recovered and used as biofertilizer. Although nutrient recovery technologies are established for wastewater, nutrient recovery from agricultural runoff remains underexplored. In this study, we developed a novel algae-supplemented anaerobic bioinfiltration system (biofilter) that uses the combined action of algae and biofilter microbiome to remove and recover nutrients from agricultural runoff. Biofilter media were submerged beneath a standing water layer, and algae were cultivated in the surface water. Runoff containing nitrate (NO 3 − ) and phosphate (PO 4 3− ) was intermittently injected, and nutrient removal performance was quantified. At the end of the experiment, algal biomass was harvested, and the mass of N and P recovered in algae was determined. NO 3 − removal was primarily driven by denitrification within the biofilter media, accounting for 70.6 ± 2.2% of total N removed, while algal recovery accounted for 29.3 ± 2.2% of the total N removed. Algal growth reduced NO 3 − removal capacity by increasing the dissolved oxygen (DO) concentration in the pore water of the biofilter media, possibly inactivating denitrifying microorganisms. Nevertheless, the biofilters still removed at least 80% of the injected NO 3 − on average. In contrast, algal uptake was the dominant PO 4 3− removal pathway, recovering 51.8 ± 6.5% of injected P, and algal growth did not affect PO 4 3− removal. Beyond nutrient recovery, algae-supplemented biofilters sequestered atmospheric carbon, removing 2609.5 ± 126.3 mg CO 2 . Overall, this system supports water treatment, nutrient recovery, and carbon capture, advancing sustainable agriculture and a circular agricultural economy.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.cejgas.2026.100082first seen 2026-06-17 05:13:48 · last seen 2026-06-17 07:13:13
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