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Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment

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Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment. / Kaparaju, Prasad; Rintala, Jukka; Oikari, Aimo.

julkaisussa: Environmental Technology, Vuosikerta 33, Nro 1, 01.01.2012, s. 85-94.

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Kaparaju, Prasad ; Rintala, Jukka ; Oikari, Aimo. / Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment. Julkaisussa: Environmental Technology. 2012 ; Vuosikerta 33, Nro 1. Sivut 85-94.

Bibtex - Lataa

@article{488872b70e15466892753b3066cf3658,
title = "Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment",
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:P 2O 5:K 2O ratio in AD was 1:0.26:0.96 and aerobic post-treatment did not change the composition in AAD except for K 2O (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.",
keywords = "aerobic post-treatment, anaerobic digestate, orange waste, phytotoxicity, plant assays",
author = "Prasad Kaparaju and Jukka Rintala and Aimo Oikari",
year = "2012",
month = "1",
day = "1",
doi = "10.1080/09593330.2011.551839",
language = "English",
volume = "33",
pages = "85--94",
journal = "Environmental Technology",
issn = "0959-3330",
publisher = "Taylor & Francis",
number = "1",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Agricultural potential of anaerobically digested industrial orange waste with and without aerobic post-treatment

AU - Kaparaju, Prasad

AU - Rintala, Jukka

AU - Oikari, Aimo

PY - 2012/1/1

Y1 - 2012/1/1

N2 - 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:P 2O 5:K 2O ratio in AD was 1:0.26:0.96 and aerobic post-treatment did not change the composition in AAD except for K 2O (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.

AB - 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:P 2O 5:K 2O ratio in AD was 1:0.26:0.96 and aerobic post-treatment did not change the composition in AAD except for K 2O (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.

KW - aerobic post-treatment

KW - anaerobic digestate

KW - orange waste

KW - phytotoxicity

KW - plant assays

UR - http://www.scopus.com/inward/record.url?scp=84857215694&partnerID=8YFLogxK

U2 - 10.1080/09593330.2011.551839

DO - 10.1080/09593330.2011.551839

M3 - Article

VL - 33

SP - 85

EP - 94

JO - Environmental Technology

JF - Environmental Technology

SN - 0959-3330

IS - 1

ER -