Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment.
Identifieur interne : 000F73 ( Ncbi/Curation ); précédent : 000F72; suivant : 000F74Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment.
Auteurs : Prasad Kaparaju [Finlande] ; Jukka Rintala ; Aimo OikariSource :
- Environmental technology [ 0959-3330 ]
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Fertilizers, Industrial Waste.
- chemistry : Citrus sinensis.
- growth & development : Brassica, Lolium.
- toxicity : Citrus sinensis, Fertilizers.
- Aerobiosis, Anaerobiosis, Toxicity Tests.
Abstract
The potential of anaerobically digested orange waste with (AAD) and without (AD) aerobic post-treatment for use in agriculture was evaluated through chemical analyses, short-term phytotoxicity and long-term plant assays. Chemical analyses showed that AD contained ammonia and organic acids, and aerobic post-treatment did not significantly remove these phytotoxins. The N:P2O5:K2O ratio in AD was 1:0.26:0.96 and aerobic post-treatment did not change the composition in AAD except for K2O (1:0.26:1.24). Heavy metal contents in AD and AAD were more or less the same and were below the upper limit recommended for non-sewage sludge application on agricultural soils. Short-term phytotoxicity tests showed that seed germination and root elongation of Chinese cabbage and ryegrass were severely inhibited at digestate concentrations of 60-100%. Germination index values were well below the score of 50% required to indicate the phytotoxic-free nature of compost. Long-term plant assays showed that AD and AAD, when supplemented with a base fertilizer, resulted in higher plant growth, and fresh weight and dry matter production than AD without base fertilizer. The results thus indicate that aerobic post-treatment did not have any significant beneficial effect on reducing phytotoxicity, and AD could be used as such on agricultural soils, especially with high P.
DOI: 10.1080/09593330.2011.551839
PubMed: 22519091
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pubmed:22519091Le document en format XML
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Box 35, University of Jyväskylä, FI 40014, Finland.</nlm:affiliation><country xml:lang="fr">Finlande</country><wicri:regionArea>Department of Biological and Environmental Science, P.O. Box 35, University of Jyväskylä, FI 40014</wicri:regionArea><orgName type="university">Université de Jyväskylä</orgName><placeName><settlement type="city">Jyväskylä</settlement><region type="région" nuts="2">Finlande-Centrale</region></placeName></affiliation></author><author><name sortKey="Rintala, Jukka" sort="Rintala, Jukka" uniqKey="Rintala J" first="Jukka" last="Rintala">Jukka Rintala</name></author><author><name sortKey="Oikari, Aimo" sort="Oikari, Aimo" uniqKey="Oikari A" first="Aimo" last="Oikari">Aimo Oikari</name></author></analytic><series><title level="j">Environmental technology</title><idno type="ISSN">0959-3330</idno></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aerobiosis</term><term>Anaerobiosis</term><term>Brassica (growth & development)</term><term>Citrus sinensis (chemistry)</term><term>Citrus sinensis (toxicity)</term><term>Fertilizers (analysis)</term><term>Fertilizers (toxicity)</term><term>Industrial Waste (analysis)</term><term>Lolium (growth & development)</term><term>Toxicity Tests</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Fertilizers</term><term>Industrial Waste</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Citrus sinensis</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Brassica</term><term>Lolium</term></keywords><keywords scheme="MESH" qualifier="toxicity" xml:lang="en"><term>Citrus sinensis</term><term>Fertilizers</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aerobiosis</term><term>Anaerobiosis</term><term>Toxicity Tests</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The potential of anaerobically digested orange waste with (AAD) and without (AD) aerobic post-treatment for use in agriculture was evaluated through chemical analyses, short-term phytotoxicity and long-term plant assays. Chemical analyses showed that AD contained ammonia and organic acids, and aerobic post-treatment did not significantly remove these phytotoxins. The N:P2O5:K2O ratio in AD was 1:0.26:0.96 and aerobic post-treatment did not change the composition in AAD except for K2O (1:0.26:1.24). Heavy metal contents in AD and AAD were more or less the same and were below the upper limit recommended for non-sewage sludge application on agricultural soils. Short-term phytotoxicity tests showed that seed germination and root elongation of Chinese cabbage and ryegrass were severely inhibited at digestate concentrations of 60-100%. Germination index values were well below the score of 50% required to indicate the phytotoxic-free nature of compost. Long-term plant assays showed that AD and AAD, when supplemented with a base fertilizer, resulted in higher plant growth, and fresh weight and dry matter production than AD without base fertilizer. The results thus indicate that aerobic post-treatment did not have any significant beneficial effect on reducing phytotoxicity, and AD could be used as such on agricultural soils, especially with high P.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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