Effect of fungal inoculum application on changes in organic matter of leaf litter composting

The decomposition of organic matter on leaf litter substrat runs very slowly in nature resulting in the accumulation of litter in the ecosystem and has even become an organic waste that creates many problems. The research was dealt with the use of lignocellulolytic fungi inoculum consisting of 3 isolates: Aspergillus fumigatus (cellulolytic), A. tubingensis (xylanolytic) and Geotrichium sp (ligninolytic) as starter of leaf litter composting. The purpose of the study is to understand the pattern of humic-fulvat acid and C/N ratio on the process of composting of leaf litter with the addition of inoculum. Observations were made to the chemical changes of compost for 3, 6 and 9 weeks of composting and the data were analyzed in RM-anova (Repeated Measures of anova). The result shows the best pattern of humic acid and fulvic change from the initial to final composting occurs at the Geotrichum sp inoculum of 0.60 or 105.2% and for fulvic are of 0.55 or 56.1% of baseline. The highest ratio value of CHA/CFA at the end of observation was by consortium of A. fumigatus and A. tubingensis inoculums that was 2.94 and the lowest value was at commercial inoculum that was 0.80; and the sharpest change value also occurred in the consortium A. fumigatus and A. tubingensis inoculums of 2.20 or 297.3%. Therefore the consortium isolates were capable of causing the maturity of the compost most rapidly compared to other isolates.

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Guidance on Making Compost from Organic Waste in Jatimukti Village, Jatinangor District, Sumedang Regency, West Java, Indonesia

International Journal of Research in Community Services ◽

10.46336/ijrcs.v1i3.44 ◽

2020 ◽

Vol 1 (3) ◽

pp. 19-22

Author(s):

Mochamad Suyudi ◽

Alit Kartiwa

Keyword(s):

Organic Matter ◽

Community Service ◽

Organic Waste ◽

Management Training ◽

Village Community ◽

The People ◽

Decomposition Of Organic Matter ◽

Composting Facility ◽

The Village ◽

And Training

Compost is a fertilizer that is produced from the decomposition of organic matter by active microorganisms. Jatimukti Village, Jatinangor Subdistrict, Sumedang Regency is a village that produces a lot of waste. Based on observations, the village looks suitable and has the potential to be introduced to the type of compost as organic material in farmers’ gardens. This service aims to foster and direct the people of Jatimukti Village community to have the skills to make compost from organic waste. Community service is carried out through socialization and training on composting. The demonstration of composting is done by using the composting facility that has been prepared. This dedication involves lecturers and students of the Department of Mathematics, Universitas Padjadjaran, as well as the people of Jatimukti Village. The results achieved were made of composters and compost made together, and the ways of making compost by utilizing waste in the community. After being given good and proper waste management training, the community can overcome the surrounding waste problems, and it is hoped that the community can evaluate the management that has been carried out before.

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Characterization of dissolved organic matter (DOM) extracted from soils by hot water percolation (HWP)

Agrokémia és Talajtan ◽

10.1556/agrokem.59.2010.1.12 ◽

2010 ◽

Vol 59 (1) ◽

pp. 99-108 ◽

Cited By ~ 3

Author(s):

M. Takács ◽

Gy. Füleky

Keyword(s):

Organic Matter ◽

Humic Acid ◽

Natural Organic Matter ◽

Extraction Methods ◽

Soil Samples ◽

Hot Water ◽

Soil Extracts ◽

Water Percolation ◽

Soil Humic Acid

The Hot Water Percolation (HWP) technique for preparing soil extracts has several advantages: it is easily carried out, fast, and several parameters can be measured from the same solution. The object of this study was to examine the possible use of HWP extracts for the characterization of soil organic matter. The HPLC-SEC chromatograms, UV-VIS and fluorescence properties of the HWP extracts were studied and the results were compared with those of the International Humic Substances Society (IHSS) Soil Humic Acid (HA), IHSS Soil Fulvic Acid (FA) and IHSS Suwannee Natural Organic Matter (NOM) standards as well as their HA counterparts isolated by traditional extraction methods from the original soil samples. The DOM of the HWP solution is probably a mixture of organic materials, which have some characteristics similar to the Soil FA fractions and NOM. The HWP extracted organic material can be studied and characterized using simple techniques, like UV-VIS and fluorescence spectroscopy.

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Characteristics of fouling due to clay-organic substances in potable water treatment by ultrafiltration

Water Science & Technology ◽

10.2166/wst.1996.0201 ◽

1996 ◽

Vol 34 (9) ◽

pp. 157-164 ◽

Cited By ~ 2

Author(s):

Kim C.-H. ◽

M. Hosomi ◽

A. Murakami ◽

M. Okada

Keyword(s):

Molecular Weight ◽

Organic Matter ◽

Humic Acid ◽

Fulvic Acid ◽

Size Distribution ◽

Ultrafiltration Membrane ◽

Organic Substances ◽

Decomposition Products ◽

Microbial Decomposition ◽

Fouling Materials

Effects of clay on fouling due to organic substances and clay were evaluated by model fouling materials and kaolin. Model fouling materials selected were protein, polysaccharide, fulvic acid, humic acid and algogenic matter (EOM:ectracellular organic matter, microbial decomposition products) and kaolin was selected as the clay material. Polysulfone membrane (MWCO(Molecular Weight Cut-Off) 10,000, 50,000 and 200,000) was used as an ultrafiltration membrane. In particular, the flux measurement of solutions containing algogenic matter used an ultrafiltration membrane of MWCO 50,000. The flux of protein and polysaccharide with coexistence of kaolin increased in the case of the ratio of MW/MWCO being greater than one, but did not increase in the case of the MW/MWCO ratio being below one. In contrast, the flux of fulvic acid and humic acid with coextence of kaolin decreased regardless of the ratio of MW/MWCO. The addition of dispersion agent and coagulant in the organic substances and kaolin mixture solution changed the size distribution of kaolin, and resulted in a change of the flux. EOM and microbial decomposition products decreased with the increase of the fraction of organic matter having molecular weight more than MWCO of membrane. The flux of the algogenic organic matter with coexistence of kaolin decreased with the increase of the amount of kaolin. It was suggested that the decline of the flux with coexistence of kaolin was due to the change of the resistance of the kaolin cake layer corresponding to the change in kaolin size distribution with charge.

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The riverine bioreactor: An integrative perspective on biological decomposition of organic matter across riverine habitats

The Science of The Total Environment ◽

10.1016/j.scitotenv.2021.145494 ◽

2021 ◽

Vol 772 ◽

pp. 145494

Author(s):

Ignacio Peralta-Maraver ◽

Rachel Stubbington ◽

Shai Arnon ◽

Pavel Kratina ◽

Stefan Krause ◽

...

Keyword(s):

Organic Matter ◽

Decomposition Of Organic Matter ◽

Riverine Habitats ◽

Biological Decomposition

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Syngenetic rapid growth of ellipsoidal silica concretions with bitumen cores

Scientific Reports ◽

10.1038/s41598-021-83651-w ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Hidekazu Yoshida ◽

Ryusei Kuma ◽

Hitoshi Hasegawa ◽

Nagayoshi Katsuta ◽

Sin-iti Sirono ◽

...

Keyword(s):

Organic Matter ◽

Early Diagenesis ◽

Ph Change ◽

Carbon Preference Index ◽

Diffusion Growth ◽

Silica Precipitation ◽

Precipitated Silica ◽

Preference Index ◽

Decomposition Of Organic Matter ◽

Growth Diagram

AbstractIsolated silica concretions in calcareous sediments have unique shapes and distinct sharp boundaries and are considered to form by diagenesis of biogenic siliceous grains. However, the details and rates of syngenetic formation of these spherical concretions are still not fully clear. Here we present a model for concretion growth by diffusion, with chemical buffering involving decomposition of organic matter leading to a pH change in the pore-water and preservation of residual bitumen cores in the concretions. The model is compatible with some pervasive silica precipitation. Based on the observed elemental distributions, C, N, S, bulk carbon isotope and carbon preference index (CPI) measurements of the silica-enriched concretions, bitumen cores and surrounding calcareous rocks, the rate of diffusive concretion growth during early diagenesis is shown using a diffusion-growth diagram. This approach reveals that ellipsoidal SiO2 concretions with a diameter of a few cm formed rapidly and the precipitated silica preserved the bitumen cores. Our work provides a generalized chemical buffering model involving organic matter that can explain the rapid syngenetic growth of other types of silica accumulation in calcareous sediments.

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Characterisation of Fe-oxide nanoparticles coated with humic acid and Suwannee River natural organic matter

The Science of The Total Environment ◽

10.1016/j.scitotenv.2013.04.083 ◽

2013 ◽

Vol 461-462 ◽

pp. 19-27 ◽

Cited By ~ 42

Author(s):

Laura Chekli ◽

Sherub Phuntsho ◽

Maitreyee Roy ◽

Ho Kyong Shon

Keyword(s):

Organic Matter ◽

Humic Acid ◽

Natural Organic Matter ◽

Oxide Nanoparticles ◽

Fe Oxide ◽

Suwannee River

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Effects of Natural Organic Matter on TCE Removal in Groundwater by Zero-Valent Iron: Batch Study

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.807-809.486 ◽

2013 ◽

Vol 807-809 ◽

pp. 486-489

Author(s):

Tong Zhou Liu ◽

Pin Hua Rao

Keyword(s):

Organic Matter ◽

Humic Acid ◽

Natural Organic Matter ◽

Early Stage ◽

Organic Contaminant ◽

Zero Valent Iron ◽

Contaminant Removal ◽

Inhibitory Effects ◽

Batch Study

An investigation on the effects of humic acid (representing NOM) on TCE (a typical organic contaminant) removal by Fe0in batch settings was carried out. Inhibitory effects of humic acid on Fe0towards TCE removal were observed. At early stage of the experiments, humic acid might partition with TCE, and the adsorption or deposition of humic acid onto Fe0surface would further facilitated TCE immobilization. Once the reduction reactive sites on Fe0surfaces were covered by accumulated humic acid and the partition of TCE to humic acid became saturated, TCE removal in Fe0was observed retarded.

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