Modeling the biodegradation of multicomponent organic matter in an aquatic environment: 1. Methodology

Dolgonosov, B. M.; Gubernatorova, T. N.

doi:10.1134/s0097807810030061

Cited by 2 publications

(3 citation statements)

References 12 publications

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“…Nilai k bahan organik di Waduk Jatiluhur lebih kecil dari cairan lindi berkisar 0,242-0,331 per hari (4) . Laju dekomposisi bahan organik diperairan dipengaruhi oleh suhu dan jenis dari bahan organik (49,50,51) .…”

Section: Laju Dekomposisi Bahan Organikunclassified

Estimasi Beban Cemar dan Laju Dekomposisi Bahan Organik di Waduk Ir. H. Djuanda, Jawa Barat

Warsa

Astuti

2020

Jurtekling

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Ir. H. Djuanda or Jatiluhur reservoir as a multifunction water body with one of utilization as fish cultivation activity. Uneaten feed and fish excretion were organic matter sources. The number of floating net cages was increasing and it caused increasing in organic matter load. The objective of the research was to known organic matter load and decomposition rate (k) and BOD (Biochemical oxygen demand) ultimate (Lo) at Jatiluhur Reservoir. The research was done in February and August 2018 at three locations were Astap, Pasir Canar and Pulau Aki. The result of the research shown was organic load from cultivation activity was 70,595 tons/year. The decomposition rate of organic matter around 0.10-0.25 per day with BOD ultimate around 6.80-8.11 mg/L. The value of Lo was affected by organic matter concentration.Keywords: Ir. H. Djuanda Reservoir, organic matter, decomposition rate, BOD ultimateABSTRAKWaduk Ir. H. Djuanda atau yang dikenal dengan Waduk Jatiluhur merupakan waduk multifungsi yang salah satu pemanfaatannya untuk kegiatan budidaya ikan. Sisa pakan yang terbuang dan ekresi ikan merupakan sumber masukkan bahan organik. Jumlah keramba jaring apung (KJA) yang semakin bertambah akan menyebabkan beban masukkan bahan organik meningkat. Tujuan penelitian ini adalah untuk mengetahui beban masukkan bahan organik dari kegiatan budidaya dan laju dekomposisi bahan organik (k) serta BOD (Biochemical oxygen demand) ultimate (Lo) di Waduk Jatiluhur. Penelitian dilakukan pada bulan Februari dan Agustus 2018 pada tiga lokasi yaitu Astap, Pasir Canar dan Pulau Aki. Pendekatan yang digunakan dalam penentuan nilai k dan Lo adalah metode Grafik Thomas. Hasil penelitian menunjukkan bahwa beban masukkan bahan organik dari kegiatan budidaya sebesar 70.595 ton/tahun. Beban masukkan bahan organik telah melebihi daya dukung perairan. Nilai k untuk dekomposisi bahan organik di Waduk Jatiluhur berkisar 0,10-0,25 per hari dengan nilai Lo berkisar 6,80-8,11 mg/L. Nilai Lo dipengaruhi oleh konsentrasi bahan organik di perairan. Kata kunci: Waduk Ir. H. Djuanda, bahan organik, laju peluruhan, BOD ultimate

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Section: Laju Dekomposisi Bahan Organikunclassified

Estimasi Beban Cemar dan Laju Dekomposisi Bahan Organik di Waduk Ir. H. Djuanda, Jawa Barat

Warsa

Astuti

2020

Jurtekling

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“…Similar effects were demonstrated by Sleighter et al (2014), higher DOM biolabile concentrations were observed to the season of leaf fall due to increasing fresh DOM content in the leached. Biodegradation models of NOM 310 in aquatic environments showed that the degradation times of lignin residues to low-molecular (Dolgonosov and Gubernatorova, 2010). On the other hand, runoff events are less impacting, and less NOM originates from the soil during the dry period; longer residence times of NOMs in this environment make them more available for degradation 315 processes, such as humification and aggregation.…”

Section: Quantification Of Nom Labile and Recalcitrant In Freshwater mentioning

confidence: 99%

“…This bioavailable fraction is formed by autochthonous production or by the photodegradation of organic compounds. Recalcitrant organic matter 65 (ROM) is derived from allochthonous formations; it is less reactive to microbiological degradation in aquatic systems because it has already been transformed in soil; Thus, photochemical reactions are important for the transformation of NOM (Filella 2009;Dolgonosov and Gubernatorova 2010 (Cooper, et al 1988;Faust;Hoigné 1992;Burns et al 2012). This behavior is mainly due to the formation of hydroxyl radicals (HO • ) through water photolysis, also known as the photo-Fenton reaction; these hydroxyl radicals are generated through the reaction of solar radiation and ion Fe (II).…”

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confidence: 99%

Lability of natural organic matter in freshwater: a simple method for detection using hydrogen peroxide as an indicator

Constantino

Tadini

Lima

et al. 2018

Preprint

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Natural organic matter (NOM) is an important component for understanding the behavior of pollutants in the environment. A fraction of NOM is considered labile, fresh and less oxidized. 15In this work, a simple method was developed to distinguish between labile (LOM) and recalcitrant (ROM) organic matter in freshwater samples. Pyruvate, lignin and fulvic acid were chosen as model compounds of labile and recalcitrant NOM. The samples were submitted to kinetic monitoring experiments using hydrogen peroxide. Pyruvate was the best standard for the quantification of LOM (for concetrations up to 2.9 mg L -1 ). ROM was quantified by 20 measuring the difference between total organic carbon (TOC) and LOM concentrations. Curves obtained with 0.5 to 5.0 mg L -1 TOC (pyruvate) in freshwater or ultrapure water samples did not indicate the existence of a matrix effect. This simple method was applied to water samples that were collected monthly for one year; the resulting LOM concentrations ranged from 0.47 to 2.1 mg L -1 and the ROM concentrations ranged from 0.08 to 3.5 mg L -1 . Based on this results 25 we concluded that hydrogen peroxide kinetics can be used as a simple method to quantify LOM and ROM concentrations in freshwater samples.

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Modeling the biodegradation of multicomponent organic matter in an aquatic environment: 1. Methodology

Cited by 2 publications

References 12 publications

Estimasi Beban Cemar dan Laju Dekomposisi Bahan Organik di Waduk Ir. H. Djuanda, Jawa Barat

Estimasi Beban Cemar dan Laju Dekomposisi Bahan Organik di Waduk Ir. H. Djuanda, Jawa Barat

Lability of natural organic matter in freshwater: a simple method for detection using hydrogen peroxide as an indicator

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