Lhadi, E.K., Tazi, H., Aylaj, M., Genevini, P.L., Adani, F. 2006. The activity focused on three tasks. 278934/MASTER ACADEMIC SCHOLARSHIP CONACYT/United States, Bioresour Technol. Each HA electropherogram was carried out by triplicate and the reported data representing the average values. HUo6>JCHej[,Hb2/uuhE96M>{|G 5\l9?.?GqIcNKYr:6 QZ~Q]C>YrKC0+(R:FKIPVtSd+DnfPlXL6]hY4qc( &hV6bX CxJU^^*E) sJ5ie.S|4H\z o3u,Ag@$Z}2]3X3Wu_/iK(T Zf1/~::A4Vmw7'tYJoF;cH,X4D-2sD}#e:r]f?H5^L'Bas^COD$ZVP{U Simplified colorimetric determination of soil organic matter. PMC Geoderma. Campitelli, P,A., Velasco, M,I., Ceppi, S,B. 368, 231-240, Droussi, Z., D'Orazio, V., Hafidi, M., Ouatmane, A. To maintain the acidity of the media, 10% (2 kg) of sludge fields was added to each pond. Effect of native growth promoting bacteria and commercial biofertilizers on growth and yield of wheat (Triticum aestivum) and barley (Hordeum vulgare) under salinity stress conditions. Journal of Environ Qual. During the culture, Chlorophyceae class was the most represented in all treatments with 5 species (36% of the specific diversity) while Euglenophyceae class (7%) was the least represented with only one (01) species. 2019 Sep 10;682:475-484. doi: 10.1016/j.scitotenv.2019.05.123. Some methodologies and techniques are proposed to study HA-like fraction of the organic amendments. Kaushik, P., Garg, V.K. This is an open access article distributed under the terms of the Pietro, M., Castaldi, P. 2004. Soil Sci. The acidic sites content (table 3) (carboxylic and phenolic groups) of HA-VRM are close to that corresponding to HA-S, probably because during the vermicomposting period the organic matter reach a condition in which the complex organic compound resemble native soil humic acids (HA-S).
The HA-CRM electropherogram shown similar profile to other soils HA, in similar experimental condition (He et al., 2010; de Moraes and Rezende 2008), suggesting that at this phase of the process the structural transformation in HA-like fraction were significant to perform the evolution toward similar soil HA characteristics. Based on the results, it can be concluded that to dispose of the animal excrement of this farm, it is necessary to build a biogas plant with a bioreactor of volume 102.2 m3 and an engine with a power of 12 to 31 kW. Sci Hort. Biores Technol. Environ Sci Technol. Labile organic compounds, such as simple carbohydrates, fats and amino acids, are degraded in the first stages of the process; cellulose, hemicelulose, lignin and other resistant substrates, take longer time for their degradation and transformation (Bernal et al., 2009). X. Vall-llossera, J. Voltas, M. Pujol, M. Soliva. Keywords: ]* tbxh6kvA'BV9-f5M]"04]6Q&0:;ZO+Wpt=eB;>>okpp}[4zCPu`'~0 |[D:|NZlK]I'x];.;|G~It]];3~ }J
The HA-VRM charge development increase (= 20%) in comparison with HA-CRM at pH = 8. <>/Border[0 0 0]/P 5 0 R>> 24 0 obj Moreover, rabbit manure significantly reduced polyphenol oxidase and peroxidase activity. Compositional and functional features of humic acid-like fraction from vermicomposting of sewage sludge and cow dung. Comparative study for separation of aquatic humic substances by capillary zone electrophore-sis using uncoated, polymer coated and gel-filled capillaries. In this research,chicken, horse, sheep and rabbit manure from one of the farms inthe Belgorod region of Russia were analyzed, and the parameters of a biogas station for the processing of this raw material were calculated.The biogas yield of the substrates was determined using the Hohenheim Biogas Yield Test.
The ratio (CHA/CFA) slightly decreases during the vermicomposting time, reaching a value of 1.5, suggesting a roughly reduction in the contents of molecules with a high degree of condensation and hu-mification, which could indicate that the earthworm activities led to a homogeny degradation of all types of C compounds without selectivity, however, maturity level reached do not decrease. 1995 Feb;61(2):793-6 Organic matter humification by vermi-composting of cattle manure alone and mixed with two-phase olive pomace. Chemolytic and solidstate spectroscopic evaluation of organic matter transformation during vermicomposting of sugar industry waste. The raw material used was rabbit manure treated with composting followed by vermicomposting process. 2004. Application of differential scanning calorimetry (DSC) to evaluate the quality of compost organic matter. The TN content in VRM was practically the same than in CRM, which indicate that in this period (vermicomposting) the content of N compounds was degraded at lower rate than in the, former phase of the process (composting) or probably the N contribution from the biological activity (urine and feces) of the earthworms could balance the lost trigged by the degradation (Gajalakshmi et al., 2005). endobj <>/Border[0 0 0]/P 5 0 R>> 11 0 obj 12 0 obj The smaller absorbance observed in HA-VRM in comparison with the HA-S value; indicate lower con-. endstream endobj 164 0 obj <>stream (Adani et al, 2006). J Hazard. The widths of both peaks are large, indicating that in this phase of the process (30 days) the HA-like fraction is characterized by a large number of acidic sites with similar dissociation properties, and have certain overlapping between the both peaks (i.e. This behaviour could be due to the high degree of chemical heterogeneity, due to the short period of stabilization (30 days), which is in agreement with those observed through the d-Q/dpH curve (Figure 1b). Gajalakshmi, S., Ramasamy, E.V., Abbasi, S,A. )X., :;mXaM,uI\0{=#_J)R_DZIQ*4inOe_7D%'q'N=EM{9-fuDlHq- ya5(0eTZ`\(hNSh]nc 2007. Through the first derivative of the -Q versus pH curves (-dQ/dpH) obtained from the titration curves smoothed with the polynomial equation (Figure 1b), is possible: i) to obtain the apparent proton-dissociation constant (Pkaap), ii) to analyze the chemical heterogeneity of each class of acidic group present in the HA macromolecule, iii) to estimate the concentration of each set of acidic groups by calculation the area, under each peak and iv) to estimate the buffer capacity developed by each class of acidic site (Nederlof et al., 1994; Koopal et al, 2005; Campitelli et al., 2006; Campitelli et al., 2008b). 2009. Copyright 2003 - 2022 Science Publication PTY LTD, https://doi.org/10.3844/ojbsci.2019.232.236. <>stream Total nitrogen content (TN) in soil, and organic amendments were obtained by the Kjeldahl method. Potentiometric titrations were carried out according to the technique proposed by Campitelli et al. H\@{/g.&]U=&Dp&b> B@/|&K(Ba>utxilrM[OG},Ogi|]s8=*. Stevenson, F.J. 1982. Two of the materials with a different composition have been composted. Charge development and acid-base characteristics of soil and compost humic acids. 122, 432-439. Ion binding to natural organic matter: general considerations and the NICA-Donnan model. It was found that the specific biogas yield from the droppings of broilers, laying hens, rabbits, sheep, and horses, and from corn silage were, respectively, 456, 363, 390, 189, 116 and 618 ml/g DM. endobj Denoted as: HA-TRM. Epub 2017 Aug 25. 102, 4536-4543, Pognani, M., Barrena, R., Font, X., Scaglia, B., Adani, F., Sanchez, A. A comparative survey of recent results on humic-like fraction in organic amendments and effects on native soil humic substances. 20, 87-104. hb```ZV%!b`0p``lRH 97, 2117-2123. The dimensions of the fused-silica capillary were 75 ^m internal diameter; 81.7 cm total length and 73.2 cm effective length. The electropherograms of all HA-like fraction analyzed shown one principal peak at = 10 min, suggesting that this would be a main structure which behaves as sink of the other carbon compounds present in the raw material, and in this way leads the HA-like fraction toward a supramolecular structure similar to HA extracted from natural soil. Nm24oo%vjQ}$vB4*KCAv^/^52:%/3jsiPE?p0P,4`dLgF_2{ H1(!_*O%b)Um#F?6#>pK$vJvYhRh#91{ZS&SO}D|Tw32Q q>O3yU)'`>bH Acta Hortic. The electropherogram of HA-TRM presents five differentiable peaks with low absorbance at 243 nm (Figure 2). Rabbit and chicken manure fertilisers resulted in a significant increase in yield. Xiaowei, L., Meiyan, X., Jian, Y., Zhiding, H. 2011. Chemosphere. 2008. All solutions were prepared with tridistilled water and all the reagents were ACS reagent grade. Enhancement of the biogas and biofertilizer production from Opuntia heliabravoana Scheinvar. In this way, is possible to assume that the HA have a large chemical heterogeneity or are a complex mixture of organic compounds produced during the original material decomposition. The concentration of each acidic sites and therefore, their buffer capacity contribution (height of the peaks), would be very low if the organic amendment is used at this time of the process. Does mycorrhiza improve salinity tolerance in grafted plants? 50, 3, 527-533. At the experimental condition (pH = 9) almost all acidic groups of HA are deprotonated (negatively charged). The electropherograms revealed the evolution of the HA-like fraction during the composting followed by vermicomposting. Smidt, E., Tinter, J. Bioconversion of waste from the olive oil and confectionery industries: spectroscopy study of HA. At this pH value, the charge is greater in HA-CRM (= 70%) than in HA-TRM. Exif II* Ducky. Technol. This site needs JavaScript to work properly. The effect of either mineral or organic fertiliser on soil fertility or the microbial community was also studied. Quality assessment of composts in the Greek market: The need for standards and quality asurance. Organic matter evolution during co-composting of organic fraction of municipal waste and poultry manure. Humus chemistry. Anaerobic digestion; Biofertilizers; Chemical fertilizer; Grain yield; Plant nutrition; Rabbit manure. 'A a)DL"FLe@=HAHZZ:ukff"$-IPv\./^vG%Yc ZibNsfadj}_ } 69, 350-357. A. Molecular structure in soil humic substances: the new view. 2005. Clipboard, Search History, and several other advanced features are temporarily unavailable.
(1985) used the ratio of CHA/ C. to establish the humification level of the OM of, compost from different origins, including manure, indicating a value greater than 1 for a good humification. Second, the counseling about the importance of using organic fertilizers for soil fertility. Co-composting of sludge from olive mill waste water mixed with tree cuttings. SOME ENVIRONMENTAL IMPACTS OF WATER MANAGEMENT AND UTILIZING FARM WASTE AT THE WESTERN DESERT OF EGYPT. 72, 551-557. The goal of this study was to determine the effectiveness of a liquid biofertilizer obtained from rabbit manure in terms of presence of pathogens, phytotoxicity, and its effect on the grain yield and other agronomic traits of barley (Hordeum vulgare L.). Table 2: Elemental composition (ash and moisture-free basis), H/C, N/C, O/C (atomic ratios) and E4/E6 ratio of the HA studied. Some evaluation criterion of the maturity state of HA-like fraction could be: the increasing in the charge development and buffer capacity, the decreasing in the chemical heterogeneity and the number of fraction with different electrokinetic mobility, i.e. The role of humic fractions from soil and compost in controlling the growth in vitro of phytopathogenic and antagonistic soil-borne fungi. % This community service activity was initiated in AugustNovember 2019 and successfully carried out with the help of students as facilitators. when the HA-like fraction evolves in order to have similar characteristics as soil HA. Moreover, a total of 14 oral communications were presented by research teams from Spain, Algeria, Venezuela, Portugal and Italy. endobj Larcheveque, M., Ballini, C., Korboulewsky, N., Montes, N. 2006. endobj The methane content in the biogas was 58.00, 58.50, 57.00, 62.00, 65.00 and 53.60%, respectively. 2017 Feb;24(4):3315-3335. doi: 10.1007/s11356-016-8104-0.
The treatments were: paddy mud (K0), paddy mud + poultry composts (K1), paddy mud + compost rabbit manure (K2) and paddy mud + compost goat manure (K3). Effect of Composted Animal Manure as Fertilizer on Productivity of Azolla Pinnata Grown in Earthen Ponds. endobj Espaa. Capillary Electrophoresis (CE): a Powerful tool to characterize humic acids (HA). We applied the biofertilizer at five combinations of doses and timings each and in two application modes (foliar or direct soil application) within a randomized complete block design with three replicates and using a chemical fertilizer as control. HA-TRM presents two broad peaks, which have maxima at pH 5.9 and pH 10.1 respectively; the first corresponds to strong acid sites (carboxylic groups) and the second to weak acidic sites (phenolic groups). Chemo-spher. 15 0 obj Integrated plant nutrient system - with special emphasis on mineral nutriton and biofertilizers for Black pepper and cardamom - A review. <>/Border[0 0 0]/P 5 0 R>> The aim of this work was to evaluate, through different analytical techniques, the evolution of some chemical and physicochemical properties of humic acid (HA)-like fraction extracted from an organic amendment, like rabbit manure, handle with composting followed by vermicomposting process, in comparison with soil HA, in order to reach an appropriate criterion to evaluate the maturity of an organic amendment. This behaviour could be due since the vermicomposting led to homogeneous degradation of all types of C compounds, with no selective accumulation of any preferential form, and thus increase the total extractable organic C in alkaline solution (Sen and Chandra 2007; Plaza et al, 2008). In recent years, farmers in Codo village have developed rabbit farms. Post-run conditions were: 1 min with NaOH 0.1 mol L-1 at 104 Pa, followed by 5 min with water at the same pressure. Thermochim Acta. 2011. f"fyo6jDQ&]/zH\b%NGKG L,7 UcI3,zl#ff7+(QtbE16E@GJw"N$uG1q1Waq(d0Hl)Gs%\.E&S{5{x8iE,"zUIjT\P-Nwp{;pYd;vqftmB>ucTNm+WdqfT.#X&6 Vermicomposting involves the bio-oxidation and stabilization of organic material by the joint action of earthworms and microorganisms. Maturity assessment of composted olive mill waste using UV spectra and humification parameters.
The site is secure. Earthworms are known to digest long chains of polysaccharides, enhancing microbial colonization and thus, changing the structure of the raw material. >sBg|A Br]e fyR@~wwo$9T Wq+Q%O(Nm1GK-ZP2CqfV!Jr>+N~'z;t^QlXP G[QeJSJ00ttt400 If$ Lr$0f If !!6fj 2I \ f%X The scattering of monochromatic light in a diluted solution of macromolecules or colloidal particles is closely related to weight, size and interaction of particles in solution, the value of the quotient, E4/ E6, suggest the aggregation level, with higher values indicating a more aggregated humic macromolecule (Chen et al, 1977; Pertusatti and Prado, 2007). The carbon content of humic substances (CHS), humic acids (CHA) and fulvic acids (CFA) were determined according to the technique proposed by Syms and Haby (1971). xXKs6o`=fn8qDZl4!Qv>DRjMH.vK(_p8l^XxPV#jhU>7>Sd.mjta_&O)_/\0 E0aWisN 99, 6900-6907. Structural changes of humic acids during olive mill pomace composting. This behaviour suggests an increase in the total aliphatic C and polysaccharides at the end of vermi-composting suggesting neosynthesis in the vermi-compost (Sen and Chandra 2007). 69, 1234-1239. The polarity was negative, voltage of -10kV, temperature 250C, total run time 20 min (for time migration higher than 20 min no significant peak were observed). Additionally, we showed that diets such as rabbit manure induced a dysbiosis with higher loads of the pathogenic bacteria Campylobacter. This encourages UIM to conduct a community service program on technology transfer regarding making solid and liquid organic fertilizers from rabbit dung in Codo Village. First, the counseling and training for making solid and liquid compost. The https:// ensures that you are connecting to the The decreasing of TN was about 28% at the end of the composting process (90 days). Chai, X., Shimaoka, T., Xiaoyan, C., Qiang, G., You-cai, Z. Sutton, R., Sposito, G. 2005. The sustainable utilization of black soldier fly (BSF) for recycling organic waste into nutrient-rich biomass, such as high-quality protein additive, is gaining momentum, and its microbiota is thought to play important roles in these processes.
The final stages of vermicomposting process would involve several changes and transformation in the chemical structure of the organic matter. Environ Sci Pollut Res Int. endstream endobj 174 0 obj <>stream *Corresponding author: *"Silvia Ceppi: sceppi@agro.unc.edu.ar. HA extracted from all organics amendments analyzed (HA-TRM; HA-CRM; HA-VRM) have H/C ratio higher than that observed for HA-S, suggesting that the humification period is not complete. endobj (2008). Thermochim Acta, 459, 87-93. FOIA This behaviour indicates the occurrence of a net organic matter mineralization, volatilization of ammonia N and/or lixiviation. strong and weak acidic sites). 14 0 obj These changes could indicate a variation in the charge/mass ratio of each compound or fractions, and thus an evolution of the HA-like fraction toward a less chemical heterogeneity, also in agreement with that observed in d-Q/dpH curve (Figure 1b). Biores Technol. According to the methodology proposed by Ritchie and Perdue (2003), at pH 8, all carboxylic groups are titrated.
This study aims were to determine the type of manure (composted manure from poultry, goats, and rabbit) which was the most optimal in producing Azolla. The decreasing in this fraction (%CHA) could, be produced, also, for the lixiviation of some hydro-solubles organic compound due to the high moisture content during this phase of the total process. Waste Manage. Sims, J.R., Haby, V.A. 96, 1057-1061. Our results indicated that all sources of organic fertiliser significantly increased total nitrogen, organic carbon, total fungi, and bacteria contents of soils compared with mineral fertiliser. However, the amount and quality of humic like substances (HS) in an organic amendment are considered as important marker of its maturity, a guarantee for a safe impact and successful performance in soil (Xiaowei Li et al., 2011). 1 0 obj Academia.edu no longer supports Internet Explorer. Buffer capacity of humic acid: Thermodynamic approach. Kononova, M.M. Environmental effects of the biofertilizer were also evaluated by following its influence on selected soil parameters. <>/Border[0 0 0]/P 5 0 R>> Chemical parameters for evaluation of compost maturity. The use of the biofertilizer caused significant changes in soil, particularly concerning pH, EC, Ca, Zn, Mg, and Mn. 19 0 obj 23 0 obj The initial average seeding density is made of 4 103 2.5 102 cells/L of Chlorophyceae, 1.5 103 1 102 cells/L of Coscinodiscophyceae, 3 103 1.2 102 cells/L of Conjugatophyceae, 2.8 103 1.5 102 cells/L of Bascillariophyceae, and 2.5 103 1.4 102 cells/L of Euglenophyceae.
139, 397-406. 1023, 129-142. The ratios of absorbance at 465 nm and 665 nm gave the E4/E6 ratio (Kononova, 1982). endobj
Humic acids C (%) H(%) N(%) S(%) O(%) H/C N/C O/C Ash(%) E4/E6, HA-S 54.6 3.3 2.8 a 39.3 0.73 0.044 0.54 1.7 4.3, HA-TRM 59.5 6.9 5.6 1.4 26.6 1.39 0.081 0.33 14.1 5.2, HA-CRM 54.2 5.8 6.1 1.7 32.2 1.28 0.095 0.45 12.0 5.8, HA-VRM 50.1 5.5 5.8 1.7 36.9 1.31 0.098 0.55 11.3 5.7. a: S content (<0.3%) detected but not quantified. Campitelli, P., Velasco, M., Ceppi, S. 2003. endobj To design biogas plants, it is necessary to have accurate data about the properties and biogas productivity of the available substrates. 2001. Vall-llossera, X., Voltas, J., Pujol, M. and Soliva, M. (1992). 25 0 obj Chemical and physical characteristics of humic and fulvic. pKaap values obtained by Henderson-Hasselbalch equation. Vanifatova, N.G., Zavarzina, A.G., Spivakov, B.Y. <>/Border[0 0 0]/P 5 0 R>> The presence of negative charges permit to separate HA by electrophoresis in electrical field (+) to (-) in which the EOF (electroosmotic flow) is responsible for the movement of the analyte (Peuravouri et al, 2004). Environ Technol. <> The electropherogram corresponding to HA-CRM presents a better definition than the HA-TRM (Figure 2). }w/viyZ!tRsd ;8e%i)'"Ef/>(NdqN0|L?~+%\9E*> &|, "y,jDI@ `xL $3 e#'eSHf16Xuf@V>ucD;J!oPW* Y^-Y4mR9T !|DOM,@! UHBG}Lg@X1v" :b-{Np;e^H&{]pa(b&w?y=~] ]
Sen, B., Chandra, T.S. It is our view that the production and use of biofertilizers are a reliable alternative to deal with a solid waste problem while food security is increased. The results showed that the Azolla dry matter production of K1, K2 and K3 treatments were greater (p<0.01) than K0 (20.80, 18.20, and 19.00 vs. 10.40 g/2,500 cm2; respectively). on topic "Characterization of humic acids derived from rabbit manure treated by composting-vermicomposting process", Journal of soil science and plant nutrition. They got information about the quality of rabbit manure compost and its impact on agricultural land. Through the composting followed by vermicomposting process the HA-like fraction are evolving toward more stable and complex macromolecule resembling native soil HA. The origin of materials influence the composting processes and the compost final characteristics. A commercial speech on Building immunity for a healthier world was also presented by Sandra Gascn (Hipra). A review Biores.Technol. J Environ Manage. 41, 352-358. Loffredo, E., Berloco, M., Senesi, N. 2008. qVQZZ&8(A`D_EijwM|F)kaW6X,z%z-Y)J9{%gu=}=6Q, 5/26}M:H\_O.*a-&UNh 8T]PI!bHk>h_ddu5Z| Y!6DUuh(1=O7{8}|juWGHMSRj>b*A Waste Manage. Roletto, E., Barberis, R., Consignlid, M., Jodice, R. 1985. J. Chil Chem Soc. endstream
endobj
166 0 obj
<>stream
<>/Border[0 0 0]/P 5 0 R>> a: Charge-pH curves of humic acids extracted from rabbit manure at thermophilic phase (HA-TRM) treated with composting (HA-CRM) followed by vermicomposting process (HA-VRM) and soil (HA-S). However, Senesi (1989) and Iglesias-Gimenez and Perez-Garcia (1992) have suggested that a ratio CHA/CFA greater than 1.6 indicate a good maturity degree achieved by the organic matter. x^:;}Ske.~v\_W F~3X
Koopal, L.K., Saito, T., Pinheiro, J. P., van Riemsdijk, W. H., 2005. Waste Manage. Potential of capillary zone electrophoresis for estimation of humate acid-base properties. 207 0 obj
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This study used a completely randomized design with 3 treatments and 10 replications. 2006. 2010. 8
The electropherograms revealed the evolution of the AH-like fraction since the raw materials to the final of the process, showing it through the decreasing of the number of fractions with different time migration, indicating that throughout the composting followed by vermicomposting process the HA-like fraction are evolving toward more stable supramolecular structure resembling native soil HA. 38, 331-343. During the vermicomposting process, the pile moisture was controlled weekly by adding enough water to obtain moisture content not less than 70 %. At each time 10 sub samples were taken at 25 cm depth in the pile and then mixed to obtain the composite sample. Chemical, physical and biological compost and vermicompost characterization: A chemometric study. Ko, H. J., Kim, K. Y., Kim, H. T., Kim, C. N., Umeda, M. 2008. Biores. 
Each HA solution, with the corresponding blank solution, was titrated by triplicate and the reported data representing the average values. 1982. Nederlof, M.M., van Riemsdijk, W.H., Koopal, L.K. r\a W+ J of Chil Chem Soc. The four main talks were mainly focussed on In-farm composting. Composting enables sanitization of the waste and elimination of toxic compounds, and the subsequent vermicomposting reduce particle size and increases nutrient availability (Lazcano et al., 2008). Please enable it to take advantage of the complete set of features! During the vermicompos-ting period, the HA-VRM charge development increases about 20-25 %, indicating different pathway in the stabilization-maturation process of the organic matter. Ecotox Environ Safe. Talanta. To obtain the E4/E6 ratio, the absorbance at 465 nm and 665 nm was measured using Spectronic 20 Ge-nesys Spectrophotometer on solution containing 3.0 mg of each HA in 10 mL of 0.05 mol L-1 NaHCO3. 20 0 obj The current study aims at determining the optimal usage conditions of rabbit manure in a multispecies fresh water algae production for fish farming. Emami T, Mirzaeiheydari M, Maleki A, Bazgir M. Cell Mol Biol (Noisy-le-grand). HUn0+x%%RbP4@9EAtJI-v5{y4))^I3FYgin"2!pkG""6D;#3~3rz753*25MM;9 C@x l`8i]HY~Ic30NiNGB!f,.$AH1eX>p"##"~[0M;L$.=}9:3_$A;kd%d!CbxXx@rWc?PW8,q8nM2KzdSh$x5jjK8s(t+.3h}2\g* J Chromatogr A. " jM3\|.+#]]M9.Q]U@}{d)k|v{}{\) rM endstream endobj 173 0 obj <>stream Animal wastes present health and environmental risks and should be treated accurately. The congress was attended by around 130 participants from several European, American and African countries. %%EOF 2004. Therefore, one of the most appropriate and reliable criteria to evaluate maturity of any organic amendment should be based on the analysis of chemical and physicochemical properties of HS-like components, i.e. 2007. p$stccEwIUaF. 2008. 4 0 obj Geo-derma. Fuentes, M., Gonzalez-Gaitano, G., Garcia-Mina, J. M. 2006. Geochim Cosmochimi Acta. Comparative study for differentiation of aquatic humic-type organic constituents by capillary zone electrophoresis using polyvinyl alcohol-coated capillary. Analysis of humic acid from compost of urban wastes and soil by fluorescence spectroscopy. Crit Rev Microbiol. HHS Vulnerability Disclosure, Help 67, 103-111. 21 0 obj Strategic valorization of de-oiled microalgal biomass waste as biofertilizer for sustainable and improved agriculture of rice (Oryza sativa L.) crop. Genesis, composition, reactants. 1 min. The peak positions of both peaks for HA-VMR (6 and 10 respectively) are similar than the other amendments HA analyzed indicating that the acidic strength do not change significantly along the process. 2016 / Linee Goswami, Sanjay Pratihar, Suman Dasgupta, Pradip Bhattacharyya, Pronab Mudoi, et al. Geoderma. endobj 28, 1037-1047. In the range between pH 8-10 Ritchie and Perdeu (2003) considered that a half of the phenolic groups are titrated. This behaviour suggest that the HA-like fraction is under a less oxidative stage in which an homogeneous degradation of C compounds or a neosynthesis of polysaccharides could take place (Sen and Chandra 2007; Plaza et al, 2008; Lazcano et al, 2008). 39, 1244-1262. endobj <> 90, 64-71. endobj Mahanty T, Bhattacharjee S, Goswami M, Bhattacharyya P, Das B, Ghosh A, Tribedi P. Environ Sci Pollut Res Int. endobj H\n0y 37, 1949-1959. As a result of this activity, 83% of the community has been able to make organic fertilizer based on rabbit dung and produce solid and liquid organic fertilizer products with different chemical compositions. around 5 - 6 for the carboxylic groups and 9 - 10 for the phenolic groups. 2000. 2016 May;42(3):439-53. doi: 10.3109/1040841X.2014.958433. Ritchie, J.D., Perdue, E.M. 2003. (eds). Composting involves the accelerated degradation of organic matter by microorganisms under controlled conditions, in which the organic material undergoes a characteristic thermophilic stage that allows saniti-zation of the waste by the elimination of pathogenic microorganisms. 2008. The aim of this study was to evaluate, through different analytical techniques, the evolution of some chemical and physicochemical properties of HA-like fraction extracted from an organic amendment, like rabbit manure, handle with composting followed by vermicomposting process in comparison with soil HA, in order to reach an appropriate criterion to evaluate the maturity of an organic amendment. The carbon content of each fraction (C , C and C ) were cal-. \/(+uRWVfb]lx]b7B"MUAyKE?D+ The usefullness of UV-Vis and fluorescente spectroscopies to study the chemical nature of humic substances from soils and compost. WC` /+3ofZ;_=[(c\4 _7 The .gov means its official. J. Measurements made were pH of the media, area of cover, yield (g weight of dry matter) and crude protein content of Azolla. E4/ E6 ratio provide interesting information if it is used to compare data of humic acids extracted from the same matrix, like a manure handle with a sequence of treatments (composting followed by vermicompos-ting). Iglesias-Jimenez, E., Perez-Garcia, V. 1992.
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