JP2022520043A - 有機廃棄物の処理 - Google Patents
有機廃棄物の処理 Download PDFInfo
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- JP2022520043A JP2022520043A JP2021545314A JP2021545314A JP2022520043A JP 2022520043 A JP2022520043 A JP 2022520043A JP 2021545314 A JP2021545314 A JP 2021545314A JP 2021545314 A JP2021545314 A JP 2021545314A JP 2022520043 A JP2022520043 A JP 2022520043A
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- Prior art keywords
- organic waste
- waste
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- C02F11/06—Treatment of sludge; Devices therefor by oxidation
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- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
Description
「含む(comprising)」という用語は、「含む(including)」及び「からなる(consisting)」を包含し、例えば、Xを「含む(comprising)」組成物は、排他的にXからなってもよく、追加のもの、例えばX+Yを含んでもよい。
上記のように、有機廃棄物を処理する方法において用いる場合、本発明に記載する反応性種を作製させることができる組成物は、有機廃棄物の生物学的分解を低減する。本発明による特定の処理では、本発明は、総バイオガス産生、特にメタン産生によるメタンガスの産生を低減することができ、及び/又は有機廃棄物からの肥料化合物、特に窒素含有肥料化合物の損失を低減することができる。本発明による処理はまた、有機廃棄物上のクラスト形成を低減することができる。
上記のように、有機廃棄物は、有機物を含む生分解性(すなわち、生物学的に分解可能な)廃棄物である。有機廃棄物は、単純な分子に、最終的には二酸化炭素、アンモニア、水、窒素、及び/又はメタンなどのガスに細分化することができる。
上記のように、本発明は、有機廃棄物を処理するための方法であって、有機廃棄物を、反応性種を作製させることができる組成物と接触させるステップを含み、組成物が酸化剤を含み、反応性種が、ヨウ化物(I-)源と酸化剤とから作製する、方法を提供する。反応性種と有機廃棄物との相互作用によって、有機廃棄物の生物学的分解が低減する。特に、この方法は、バイオガスの全体的な産生を低減することができ(特に、メタン産生によるメタンの産生を低減し)、有用であり価値のある有機化合物、例えば肥料化合物(特に窒素含有肥料化合物)の損失も低減することができる。
上に説明したように、本発明による、反応性種を作製させることができる組成物によって処理した有機廃棄物は、本発明による処理をしていない廃棄物(又は未処理廃棄物)と比較して、生物学的分解が少ない。例えば、メタン産生による生物学的分解、及び肥料化合物の損失は、本発明による処理をしていない有機廃棄物(又は未処理廃棄物)と比較して低減する。本発明による処理はまた、未処理廃棄物と比較して、有機廃棄物上のクラスト形成を低減することができる。結果として、本発明による処理をした有機廃棄物の化学的及び生物学的組成は、未処理有機廃棄物、又は異なる方法(例えば酸性化)によって処理した有機廃棄物の化学的及び生物学的組成とは異なる。
上に述べたように、本発明はまた、有機廃棄物の嫌気性消化(AD)中の揮発性脂肪酸(VFA)及び中鎖カルボン酸(MCCA)の産生を改善するための方法であって、反応性種を作製させることができる組成物を、有機廃棄物と接触させるステップを含む、方法を提供する。
16kgのスラリーを含有する6つの25Lドラムを用いて、本発明の処理の効果を評価した。用いたスラリーは、ホルスタイン・フリーシアン種のグラスフェッド乳牛からのものであった。
この実施例におけるデータは、実施例1と同じバッチのスラリーから作製したものである。したがって、処理組成物、対照、及び処理条件は、実施例1と同じである。
この実施例におけるデータは、実施例1と同じバッチのスラリーから作製したものである。したがって、処理組成物、対照、及び処理条件は、実施例1と同じである。
1)改良なし
2)未処理スラリーによる改良
3)処理後スラリーによる改良
アイルランド農場ベースの嫌気性消化の特徴付けに基づいて、3つの10リットル連続撹拌槽型バイオリアクター(CSTR,continuously stirred tank bioreactors;R1~R3)を、37℃において運転した。
9kgの新鮮なスラリーを含有する4つの12Lドラムを、換気のよい屋外の小屋で、屋外の周囲温度(約10~15℃)において、周囲圧力で貯蔵した。上の通り、用いたスラリーは、ホルスタイン・フリーシアン種のグラスフェッド乳牛からのものであった。4つのうちの1つのドラム内のスラリーは、未処理のまま放置し、一方、3つの他のドラム内のスラリーは、次の組成物によって処理した。
2. 1kgのスラリー当たり2.4gの尿素-過酸化物と、1kgのスラリー当たり0.266gのKIとを含有する組成物。
3. 1kgのスラリー当たり6gの尿素-過酸化物と、1kgのスラリー当たり0.665gのKIとを含有する組成物。
12kgの新鮮なスラリーを含有する2つの25Lドラムを、換気のよい屋外の小屋で、屋外の周囲温度(約10~15℃)において、周囲圧力で貯蔵した。上の通り、用いたスラリーは、ホルスタイン・フリーシアン種のグラスフェッド乳牛からのものであった。2つのうちの1つのドラム内のスラリーは、未処理のまま放置し、一方、他方のドラム内のスラリーは、1kgのスラリー当たり2.4gの尿素-過酸化物と、1kgのスラリー当たり0.266gのKIとを含有する組成物によって処理した。
12kgの新鮮なスラリーを含有する5つの25Lドラムを、換気のよい屋外の小屋で、屋外の周囲温度(約10~15℃)において、周囲圧力で貯蔵した。上の通り、用いたスラリーは、ホルスタイン・フリーシアン種のグラスフェッド乳牛からのものであった。ドラムのうちの1つの中のスラリーは、未処理のまま放置し、一方、他の4つのドラム内のスラリーは、次の組成物によって処理した。
2. 1kgのスラリー当たり2.4gの尿素-過酸化物を含有する組成物。
3. 1kgのスラリー当たり1.53gの尿素を含有する組成物。
4. 1kgのスラリー当たり0.86gのH2O2を含有する組成物。
4個の110ml嫌気性バイアルを用いて、比メタン産生活性に関する、本発明の処理の効果を試験した。この方法は、Coates et al., Journal of Microbiological Methods, 26 (1996), 237-246に記載されている。
2. 1kgのスラリー当たり1.19gの尿素-過酸化物と、1kgのスラリー当たり0.172gのIKO3とを含有する組成物。
3. 1kgのスラリー当たり0.172gのIKO3のみを含有する組成物。
この実施例は、ブタ(swine)糞尿に対する、本発明の処理の効果を分析した。
2. 1kgのスラリー(新鮮重量)当たり0.43gの過酸化物と、1kgのスラリー(新鮮重量)当たり0.133gのKIとを含有する組成物。
3. 1kgのスラリー(新鮮重量)当たり0.172gのIKO3を含有する組成物。
3つの12Lドラムは、9kgの新鮮なスラリーを含有しており、屋内の周囲室温(約15~20℃)において、周囲圧力で貯蔵した。ドラムのうちの1つの中のスラリーは、未処理のまま放置し、一方、他の2つのドラム内のスラリーは、次の組成物によって処理した。
2. 1kgのスラリー(新鮮重量)当たり0.86gの過酸化物と、1kgのスラリー(新鮮重量)当たり0.265gのKIとを含有する組成物。
3つの12Lドラムは、9kgの新鮮なスラリーを含有しており、屋内の周囲室温(約20℃)において、周囲圧力で貯蔵した。ドラムのうちの1つの中のスラリーは、未処理のまま放置し、一方、他の2つのドラム内のスラリーは、次の組成物によって処理した。
2. 1kgのスラリー(新鮮重量)当たり0.86gの過酸化物と、1kgのスラリー(新鮮重量)当たり0.344gのIKO3とを含有する組成物。
この実施例に用いた消化液は、食品廃棄物と畜牛スラリーとを共消化する中温性嫌気性消化槽から試料採取した。
2. 1kgのスラリー当たり1.53gの尿素を含有する組成物。
3. 1kgの消化液(新鮮重量)当たり2.4gの尿素-過酸化物を含有する組成物。
4. 1kgのスラリー(新鮮重量)当たり2.4gの尿素-過酸化物+0.344gのIKO3を含有する組成物。
発酵プロセスの効率の比較は、150日の連続嫌気性バイオリアクター試行の間、食品廃棄物と動物糞尿との混合物からのVFA産生をモニタリングした実験に反映される。
1. 有機廃棄物を処理するための方法であって、
有機廃棄物を、反応性種を作製させることができる組成物と接触させるステップを含み、
組成物が酸化剤を含み、
反応性種が、ヨウ化物(I-)源と酸化剤とから作製する、方法。
1(I-):0.1(過酸化水素)、
1(I-):0.4(過酸化水素)、
1(I-):1.1(過酸化水素)、
1(I-):2.5(過酸化水素)、及び
1(I-):3.2(過酸化水素)
からなる群から選択される、付番実施形態29に記載の方法、又は付番実施形態28に記載の使用。
1グラムの有機廃棄物当たり約0.33mg、
1グラムの有機廃棄物当たり約0.67mg、及び
1グラムの有機廃棄物当たり約1.33mg
からなる群から選択される、付番実施形態40に記載の方法、又は付番実施形態40に記載の使用。
1グラムの有機廃棄物当たり約2.66mg、及び
1グラムの有機廃棄物当たり約3.39mg
からなる群から選択される、付番実施形態40に記載の方法、又は付番実施形態40に記載の使用。
反応性種を作製させることができる組成物を、有機廃棄物と接触させるステップを含む、方法。
Claims (25)
- 有機廃棄物を処理するための方法であって、
有機廃棄物を、反応性種を作製させることができる組成物と接触させるステップを含み、
前記組成物が酸化剤を含み、
前記反応性種が、ヨウ化物(I-)源と前記酸化剤とから作製する、前記方法。 - 有機廃棄物の処理において、有機廃棄物の生物学的分解を低減する方法における、反応性種を作製させることができる組成物の使用。
- 有機廃棄物の生物学的分解を低減する方法が、メタン産生を低減する方法である、請求項2に記載の使用。
- 有機廃棄物の生物学的分解を低減する方法が、有機廃棄物の処理において、有機廃棄物からの肥料化合物の損失を低減する方法である、請求項2に記載の使用。
- 反応性種が、ヨウ化物(I-)源と酸化剤とから作製する、請求項2~4のいずれかに記載の使用。
- 組成物が酸化剤を含む、請求項5に記載の使用。
- 組成物が、水中でpKa8未満のpKaを有するいかなる酸も実質的に含まない、請求項1に記載の方法、又は請求項2~6のいずれかに記載の使用。
- 組成物が、処理中に有機廃棄物を酸性化しない、請求項1若しくは7に記載の方法、又は請求項2~7のいずれかに記載の使用。
- 有機廃棄物がヨウ化物(I-)源を含む、請求項1、7及び8のいずれかに記載の方法、又は請求項5~8のいずれかに記載の使用。
- 組成物がヨウ化物(I-)源を含む、請求項1及び7~9のいずれかに記載の方法、又は請求項5~9のいずれかに記載の使用。
- ヨウ化物(I-)源がヨウ化カリウム(KI)である、請求項1及び7~10のいずれかに記載の方法、又は請求項5~10のいずれかに記載の使用。
- 酸化剤が、過酸化物(O2 2-)源、又はヨウ素酸([IO3]-)源(例えば、ヨウ素酸ナトリウム、ヨウ素酸カリウム)、過マンガン酸([MnO4]-)源(例えば、過マンガン酸ナトリウム、過マンガン酸カリウム)、及びこれらの組み合わせからなる群から選択される酸化剤である、請求項1及び7~11のいずれかに記載の方法、又は請求項5~11のいずれかに記載の使用。
- 酸化剤が過酸化物(O2 2-)源である、請求項12に記載の方法、又は請求項12に記載の使用。
- 過酸化物(O2 2-)源が過酸化水素(H2O2)である、請求項13に記載の方法、又は請求項13に記載の使用。
- 組成物が尿素源を含む、請求項1及び7~14のいずれかに記載の方法、又は請求項2~14のいずれかに記載の使用。
- 尿素源が、尿素、過酸化物-尿素付加物、タンパク質、アミノ酸、尿、及びこれらの組み合わせからなる群から選択される、請求項15に記載の方法、又は請求項15に記載の使用。
- 組成物が過酸化水素-尿素付加物を含む、請求項12及び13~16のいずれかに記載の方法、又は請求項12及び13~16のいずれかに記載の使用。
- 組成物がヨウ化カリウムと過酸化水素とを含む、請求項1及び7~17のいずれかに記載の方法、又は請求項2~17のいずれかに記載の使用。
- 有機廃棄物が、ヒトの排泄物、堆肥化可能な廃棄物、真菌廃棄物、又は動物の排泄物である、請求項1及び7~18のいずれかに記載の方法、又は請求項2~18のいずれかに記載の使用。
- 請求項1及び7~19のいずれかに記載の方法によって処理された、有機廃棄物。
- 肥料;バイオマス燃料;土壌調節剤;嫌気性消化のための供給原料;バイオ精製のための供給原料;動物用飼料(例えば魚用餌)の生産のための供給原料;藻類の産生のための供給原料;動物性タンパク質(例えば昆虫/イモムシ等)の産生のための供給原料;化学合成のための供給原料/基質;建設材料の生産のための供給原料;動物用敷料の生産のための供給原料;紙の生産のための供給原料;又は熱分解若しくはガス化などの熱変換プロセスのための供給原料としての、請求項20に記載の有機廃棄物の使用。
- 有機廃棄物の嫌気性消化(AD)中の揮発性脂肪酸(VFA)及び中鎖カルボン酸(MCCA)の産生を改善するための方法であって、
反応性種を作製させることができる組成物を、前記有機廃棄物と接触させるステップを含む、前記方法。 - 組成物が、有機廃棄物のメタン産生を阻害する反応性種を作製させる、請求項22に記載の方法。
- 組成物が、ヨウ化物(I-)源と過酸化物(O2 2-)源とを含む、請求項22又は23に記載の方法。
- 組成物が、ヨウ化物(I-)源と尿素-過酸化物とを含む、請求項22~24のいずれかに記載の方法。
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