Quick Decomposition Research Articles

Microstructure development by the application of different strain paths prior to soft annealing in a medium carbon steel

The effect of different pre-strain application paths on the microstructure evolution of a medium carbon steel after soft annealing is studied. The strain applied on an undercooled austenite induces fine ferrite and pearlite transformation at austenite grain boundaries leading to an average grain size much finer than that in the case where no pre-strain is applied (around 4 and 7 µm, respectively) and a drastic reduction of the fraction of large grains (>20 µm) that become the 17% rather than the 40%. Cementite direct precipitation at the induced ferrite α/α interface and the induced pearlite quick decomposition, give rise to an improved degree of spheroidisation after annealing and a L2 IFI rating regarding the ASTM F2282 standard. When the strain is applied on pearlite, diffusion through the matrix is enhanced which accelerates the lamellae break-up and leads to fully spheroidised microstructures after annealing (degree of spheroidisation above 90% and G1 on IFI rating). When both strain sequences are applied consecutively, the resulting annealed microstructure combines the features corresponding to each individual strain paths, i.e., homogeneous and refined ferrite grain size and enhanced spheroidisation degree, which confers optimal cold workability properties to the steel. In addition, such characteristics are attained without an excessive increase in hardness (in the range 155–180 HV), which is interesting when considering cold forming tool wear.

Design and Fabrication of Cost-Effective Composting for Easy Decomposing of Home Wastes

The primary objective is to develop a Household waste Decomposer that not only composting thee kitchen waste but also ensures quick decomposition while minimizing odors. Our design integrates innovative features, such as a compact and user-friendly composting unit, utilizing a controlled aeration system to accelerate the composting process. This aeration system promotes optimal conditions for microbial activity, enhancing the breakdown of organic matter Another one method added to using decomposer sand. Decomposition sand is a biological process that includes the physical breakdown and biochemical transformation of complex organic molecules of dead material into simpler organic and inorganic molecules. There are two effective system used in Household waste Decomposer. This composting process create a bad smell , so that we are using high suction power exhaust fan. In this suction fans is pull a Odorant particles throw out to the atmospheric air Food waste and decomposer sand ismixed well before pouring in top of the hopper. Food waste and decomposer mixer breakdown the particles like (leaf and tomato and other kitchen veg, waste food) using grinding method Traditional composting methods are slow decomposing and high level of odor form. Now odor free decomposer and quick decomposer at a same time cost effective home decomposing.Household waste Decomposer suitable for trace garden

Accelerated Activity-Based Sensing by Fluorogenic Reporter Engineering Enables to Rapidly Determine Unstable Analyte.

Accurate detection of labile analytes through activity based fluorogenic sensing is meaningful but remains a challenge because of nonrapid reaction kinetic. Herein, we present a signaling reporter engineering strategy to accelerate azoreduction reaction by positively charged fluorophore promoted unstable anion recognition for rapidly sensing sodium dithionite (Na2S2O4), a kind of widespread used but harmful inorganic reducing agent. Its quick decomposition often impedes application reliability of traditional fluorogenic probes in real samples because of their slow responses. In this work, four azo-based probes with different charged fluorophores (positive, zwitterionic, neutral, and negative) were synthesized and compared. Among of them, with sequestration effect of positively charged anthocyanin fluorophore for dithionite anion via electrostatic attraction, the cationic probe Azo-Pos displayed ultrafast fluorogenic response (∼2 s) with the fastest response kinetic (kpos' = 0.373 s-1) that is better than other charged ones (kzwi' = 0.031 s-1, kneu' = 0.013 s-1, kneg' = 0.003 s-1). Azo-Pos was demonstrated to be capable to directly detect labile Na2S2O4 in food samples and visualize the presence of Na2S2O4 in living systems in a timely fashion. This new probe has potential as a robust tool to fluorescently monitor excessive food additives and biological invasion of harmful Na2S2O4. Moreover, our proposed accelerating strategy would be versatile to develop more activity-based sensing probes for quickly detecting other unstable analytes of interest.

Cytidine does not affect acute toxicity of intravenously administered choline.

Cytidine-5'-diphosphocholine (CDP-choline) is a key precursor for the intracellular synthesis of phosphatidylcholine and other phospholipids. Following either intravenous or oral application citicoline (CDP-choline of exogenous origin) undergoes quick decomposition to cytidine and choline, and for this reason it is frequently considered a prodrug. However, upon acute intravenous application in mice citicoline is, on a molar basis, 20 times less toxic than choline. To find out whether cytidine may attenuate toxicity of choline, in the present experiments we compared maximum tolerated doses of single intravenous injections of choline and equimolar mixture of choline and cytidine. We assumed that, if after oral intake a substantial part of citicoline is catabolised already in the intestine and its catabolites enter blood separately, intravenously applied equimolar mixture of cytidine and choline will be markedly less toxic than an equivalent molar dose of choline. However, the maximum tolerated single doses determined in our experiment for choline and equimolar mixture of choline and cytidine were similar. These data suggest that citicoline taken orally is not significantly decomposed in the intestinal lumen, but absorbed to blood as the intact molecule.

Experimental study of the formation and decomposition of mixed gas hydrates in water-hydrocarbon system

The phase transition of gas hydrate with two or more guests is associated with gas recovery, storage and separation. In this work, the formation and decomposition of binary and ternary gas hydrates containing CH4, C2H6 and C3H8 were investigated experimentally in high-pressure reactors equipped with visual windows. The gas compositions during mixed hydrates formation and decomposition were analyzed to track the occupation of guests in hydrate structures and the release of guests from hydrate cages. It was found that of CH4 was adsorbed in the hydrate cages constructed by C2H6 and C3H8 in the initial stage. In the depressurized decomposition of CH4-C3H8 hydrates and CH4-C2H6-C3H8 hydrates slurry, CH4 and C2H6 molecules were preferentially released from hydrate structures while more C3H8 molecules were able to stay in hydrate phase, which was in accordance with the order of the diameter ratio of guest molecule to hydrate cage. The preservation of CH4-C3H8 hydrates and CH4-C2H6-C3H8 hydrates above 0 ℃ was observed under a low pressure. It was proposed that the reconstitution or reformation of hydrate layer rich of C3H8 may encrust the remaining hydrate particles, preventing hydrate from further quick decomposition. In-situ Raman spectra confirmed the enrichment of C3H8 molecules at the surface of CH4-C3H8 hydrates, which revealed that the metastable hydrate layer rich of C3H8 molecules may act as mass transfer resistance of gas release from hydrate decomposition. Differently, the decompositions of CH4-C2H6 hydrates and C2H6-C3H8 hydrates were uniform as different guests were produced concurrently without preservation. The new insights into mixed hydrates decomposition in this work may provide a new basis for mixed gas production from gas hydrate, and gas storage and separation with hydrate.

The synergistic effect between biofertility properties and biological activities in vermicomposting: A comparable study of pig manure

Vermicomposting is a resource technology for managing animal excreta, whereas the internal relationships of the process are vital for its wide applications. The present study examined how macronutrient and micronutrient concentrations, microbial communities, and enzymatic activity of pig manure (PM) changed during the composting and vermicomposting processes and their internal interactions. The vermicomposting process increased macronutrients more significantly than composting (32.40% of total available nitrogen, 21.70% of total available phosphorous, and 12.70% of total available potassium). The vermicomposting reduced total organic carbon (7.91%), C/N ratio (61.35%), and humification index (56.47%) more than composting due to the quick decomposition of PM. After continual fertility optimization, the total microbial population, with the exception of total fungi, rose significantly to accelerate organics mineralization and improve macronutrients in vermicomposting compared to composting. Moreover, earthworm addition favored the stabilization of the PM containing higher concentrations of micronutrients after being catalyzed by the enhanced catalase activity and reduced sucrase activity after 90 days of vermicomposting. Principal component analysis and chord plots found that the generated vermicomposting products had higher fertility properties and biological activities induced by the synergistic effect of microorganisms and earthworms. These findings highlight vermicomposting is an eco-friendly management technology for processing PM and can be scaled up for agricultural applications.

Cobalt bismuth oxide with cobalt(II/III) as a new stable peroxymonosulfate activator for effective degradation, mineralization, and detoxification of diclofenac in water

Peroxymonosulfate-based advanced oxidation process (PMS-AOPs) is one of most effective approaches for eliminating emerging organic pollutants (EOPs). To develop high-performance and stable PMS activators is the key to the further development of PMS-AOPs. Cobalt-based catalysts have been proved to be the excellent PMS activators. Here, cobalt bismuth oxide (Bi 7.53 Co 0.47 O 11.92 ) prepared by facile one-step calcination method was employed as the new PMS activator. As expected, diclofenac (DCF), one kind of EOPs, were quickly decomposed and even mineralization by the Bi 7.53 Co 0.47 O 11.92 activated PMS system. Within 10 min of reaction, 100% degradation efficiency and 82.1% mineralization rate were achieved. The toxicity of degraded products was assessed to be much lower than pristine DCF. Moreover, six-cycle experiments verified the good reusability of Bi 7.53 Co 0.47 O 11.92 . This work contributes to develop new stable and high-efficiency PMS heterogeneous activators, being beneficial to build high-performance PMS-AOPs for EOPs treatment. • Cobalt bismuth oxide with stable surface Co active site was synthesized. • Efficient mineralization and detoxification of DCF was achieved. • The stable reusability of cobalt bismuth oxide in activating PMS was determined. • Superoxide radicals were mainly responsible for the quick decomposition of DCF.

DRY BREWER GRAINS AS REPLACEMENT FOR ALFALFA IN DIETS FOR LACTATING EWES

The settlement of small and medium breweries in cities leads to the production of nutrient-rich organic residues, the quick decomposition of which causes unpleasant odours and attracts large amounts of flies. Under the hypothesis that replacing alfalfa (lucerne) with dry brewer grains (DBG) for lactating ewes would modify their milk production and physicochemical quality. The aim was to determine the effect of the DBG supplementation in the feed of ewes in milk production and quality, as well as in the physical condition of the animals. Fifteen 18-month-old ewes from a cross between Friesian × Rambouillet resulting from a first birth (30 days on milk) were distributed into 3 treatments with 0, 150 or 300 g of DBG. The experiment had a duration of 30 days, in which milk production, feed intake and physicochemical characteristics of the milk (fat, non-fatty solids, density, cryoscopic point, protein, lactose, and salts) were measured and each week the intake of feed in dry mass and the change in body weight were registered. Milk production displayed no differences between treatments and a decrease was observed in the production of milk for all treatments between weeks one (462 mL) and four (162 mL). Physicochemical variables of the milk displayed no differences between treatments, and quality was not affected. The change in body weight was the highest in the 300 g DBG treatment, with a modification of approximately 12.8 ± 0.45 kg (p ≤ 0.05) during the trial time, daily weight gain was 440 ± 0.08 g d-1 (p ≤ 0.05). The implementation of DBG in the feeds of ewes reduced the intake of dry matter, food conversion improved, and the cost of feed per ewe was reduced by up to 33.8 %.

Rapid and green combustion synthesis of nanocomposites based on Zn–Co–O nanostructures as photocatalysts for enhanced degradation of acid brown 14 contaminant under sunlight

It is highly favorable to introduce an efficacious magnetic separable structure as visible light photocatalyst for practical usages to eliminate organic contaminants. Herein, magnetic separable zinc–cobalt mixed-metal oxides as visible light photocatalysts were successfully fabricated utilizing diverse saccharides as eco-friendly kinds of capping agents and fuels, for the first time. The influence of saccharide kind and its dosage was explored to achieve the circumstances for creating the sample with more favorable morphology, catalytic capability, and size. The features of the nanostructured zinc–cobalt mixed-metal oxides were investigated, and its creation corroborated with several techniques. In the following, the catalytic decomposition activity of varied ZnCo2O4/Co3O4 micro/nanostructures for acid brown 14 as a water contaminant was explored, for the first time. The outcomes reveal that the nanostructured zinc–cobalt mixed-metal oxides as visible light photocatalysts could denote superb yield. The use of the binary composite nanostructures (ZnCo2O4-Co3O4) resulted in quick decomposition, with almost 94.3% of acid brown 14 being decomposed within 75 min. This work offers a feasible and eco-friendly way to create magnetic separable zinc–cobalt mixed-metal oxides as high potential visible light photocatalysts that can be apposite for environmental remediation.

Mass Mortality of Invasive Snails: Impact of Nutrient Release on Littoral Water Quality

Mollusks are the macroinvertebrates most commonly introduced into fresh water. In invaded reservoirs, alien mollusks form a large biomass due to their large size. Climate change, water level regulation, and anthropogenic impacts on the environment lead to the drying up of water bodies and the death of littoral macroinvertebrates. To assess the impact of invasive snail mass mortality on water quality, laboratory experiments on the snail tissue decomposition were performed, the potential release of nutrients into aquatic ecosystems was calculated, and the predicted concentrations of nutrients were verified by field studies. The laboratory experiment showed quick decomposition of the common river snail Viviparus viviparus tissues with release into the environment of ammonium and total phosphorus of 2.72 ± 0.14 mg and 0.10 ± 0.02 mg, respectively, per gram of decomposing tissue. The concentrations of ammonium, nitrates, and total phosphorus at the site of snail death reached 2.70 ± 0.10, 3.13 ± 0.38 and 0.30 ± 0.02 mg/L, respectively. This indicates local contamination of the Novosibirsk reservoir littoral with decomposition products. The aquatic management, water level regulation, and control of undesirable species should take into account the likelihood of water quality decreasing as a result of macroinvertebrate mass mortality.

Importance of the catalytic effect of the substrate in the functionality of lubricant additives: the case of molybdenum dithiocarbamates

Molybdenum dithiocarbamates (MoDTCs) are lubricant additives very efficient in reducing the friction of steel, and they are used in a number of industrial applications. The functionality of these additives is ruled by the chemical interactions occurring at the buried sliding interface, which are of key importance for the improvement of the lubrication performance. Yet, these tribochemical processes are very difficult to monitor in real time. Ab initio molecular dynamics simulations are the ideal tool to shed light on such a complicated reactivity. In this work, we perform ab initio simulations, both in static and tribological conditions, to understand the effect of surface oxidation on the tribochemical reactivity of MoDTC, and we find that when the surfaces are covered by oxygen, the first dissociative steps of the additives are significantly hindered. Our preliminary tribological tests on oxidized steel discs support these results. Bare metallic surfaces are necessary for a stable adsorption of the additives, their quick decomposition, and the formation of a durable MoS2 tribolayer. This work demonstrates the importance of the catalytic role of the substrate and confirms the full capability of the computational protocol in the pursuit of materials and compounds more efficient in reducing friction.

Further exploration of the reaction between cis‐[Fe(CO)4I2] and alkylamines: An aminium salt of fac‐[Fe(CO)3I3]− or an amine‐bound complex of fac‐[Fe(CO)3I2(NH2R)

Four new monoiron (II) tricarbonyl complexes with the amine bound, fac‐[Fe(CO)3I2(NH2R)] (R = Et, 1; nPr, 2; nBu, 3; nPent, 4), were reported using cis‐[Fe(CO)4I2] as the precursor. All the complexes 1–4 were structurally confirmed by various techniques such as ultraviolet–visible (UV–vis), Fourier transform infrared (FTIR), and nuclear magnetic resonance (NMR) spectra and elemental analysis of which complexes 1 and 2 are crystallographically determined. The reaction of the precursor with alkylamines proceeded in two main parallel pathways to form both aminium salts of fac‐[Fe(CO)3I3]− and the amine‐bound complexes (1–4). Their dominances altered with the reaction time. These complexes in DMSO undergo quick decomposition with complex 1 as the relatively most stable one (t1/2 = 7.3 min) although they are stable in solid status. Unlike the triiodo anion and pyridinyl analogs showing severe cytotoxicity due to the generation of iodine radical during the decomposition, no iodine radicals were detected from the fac‐[Fe(CO)3I2(NH2R)] complexes. Therefore, the cell viability of RT112 cells was not affected by the presence of the amine‐bound iron complex (1) up to 100 μmol L−1.

Experimental and Theoretical Study on Glycolic Acid Provided Fast Bio/Seawater-Degradable Poly(Butylene Succinate-co-Glycolate)

The very slow degradation of biodegradable polymers in the marine environment is due to the lack of dedicated degradation enzymes in open seas. As a result, introducing monomers that have a fast hydrolysis process is required to accelerate seawater degradation. Poly(butylene succinate-co-glycolate) (PBSGA) copolyesters with glycolic acid (GA) units ranging from 5 to 40% were synthesized by our newly developed polymerizing method based on oligo(glycolic acid). The results of ¹H-NMR and GPC revealed that short GA segments were evenly distributed between BS segments, obtaining random copolyesters with a weight-average molecular weight over 6.24 * 10⁴ g/mol. The copolymerized GA units hinder its crystallization capability and increase hydrophilicity of the PBSGAs, which still displayed mechanical properties comparable or even better than most biodegradable polymers. Fast degradation in seawater and enzymatic environments (Candida antarctica lipase B enzymes) is proved experimentally. The quick decomposition in seawater was originated from accelerated hydrolysis. For instance, the weight loss of PBSGA40 (compositions of GA units) exceeded 22% after 49 days. Possible degradation mechanisms were proposed based on Fukui function analysis and frontier molecular orbital calculation. Additionally, the energy barrier for hydrolysis was calculated by the density functional theory method, indicating that the hydrolysis of the polymer chain became more and more easy with the increase in GA units. At last, the addition of GA units only had a mild effect on the shelf life of the PBSGAs.

Competitive Improvement of the Time Complexity to Encode Fractal Image: By Applying Symmetric Central Pixel of the Block

By combining the basics of self-similarity, scaling correlation, and statistical components, Benoit Mandelbrot formulated the idea of a natural fractal entity, an entity described by those fundamentals. As a result of these principles, fractal image codings are being used in many substantial applications already, such as image compression, image signature, image watermarking, image attribute extraction, and even image texture segmentation. Thus, while fractal image coding is relatively new in the field of image encoding, it has gained broad acceptance at a rapid pace. In light of its beneficial qualities, such as quick decomposition, high compression ratio, and the independence of resolution at any size make these applications conceivable. However, compared to its advantages, fractal image coding is extremely time-complex and so remarkably expensive, which hinders its prevalence. A wide hunting domain blocks for the relevant range blocks caused this difficulty. We proposed several improvements to the Jacquin design in this paper. We first used max-pooling as an alternative for the medium bonding of spatial contractions to validate the value of the edge textures of the block. Secondly, we construct the odd-size pixel block alternative to an even-size pixel block for validation of the symmetric central pixel (CP). Finally, before the search started, we proposed a shortening of block space, using the central pixel of the block to convert each eight-bit pixel to a two-bit pixel. As a consequence, the symmetrical CP of odd pixels block, reduction of block space, and edge pixel selection accomplished faster coding and competitive image quality than existing known exhaustive search algorithms.

Surface characterization and corrosion behavior of calcium phosphate (Ca-P) base composite layer on Mg and its alloys using plasma electrolytic oxidation (PEO): A review

Magnesium has been known as an appropriate biological material on account of its good biocompatibility and biodegradability properties in addition to advantageous mechanical properties. Mg and its alloys are of poor corrosion resistance. Its high corrosion rate leads to its quick decomposition in the corrosive ambiance and as a result weakening its mechanical properties and before it is repaired, it will vanish. The corrosion and degradation rate must be controlled in the body to advance the usage of Mg and its alloys as implants. Different techniques have been utilized to boost biological properties. Plasma electrolytic oxidation (PEO) can provide porous and biocompatible coatings for implants among various techniques. Biodegradable implants are generally supposed to show enough corrosion resistance and mechanical integrity in the body environment. Much research has been carried out in order to produce PEO coatings containing calcium phosphate compounds. Calcium phosphates are really similar to bone mineral composition and present great biocompatibility. The present study deals with the usage of calcium phosphates as biocompatible coatings applied on Mg and its alloys to study the properties and control the corrosion rate.

Synthesis and Characterization of Nano-Acetamiprid—New Plant Safeguard Nanomaterial

In present days many types of materials are used to reduce the environmental pollution in the world which includes nanomaterials. Nanopesticides increase the efficacy, durability and reduction in the amount of active constituent. The potential applications of nanotechnology in pesticides are quick decomposition in soil or plant, targeted delivery, apparent solubility and controlled release. In this communication the author reported a neonicatonoid insecticide called as Nano-acetamiprid and it is widely used to control fungal infections in different crops like cotton, leafy vegetables, citrus fruits, pome etc. The author reported a facile method i.e. a new Nano-acetamiprid for plant disease control and its subsequent characterization of encapsulated complex using polycaprolactone as an encapsulated agent. Nano-acetamiprid encapsulated particles were characterized by dynamic light scattering (DLS), ultraviolet spectroscopy and scanning electron microscopy (SEM). To ascertain the formation and the stability of nanoencapsulated acetamiprid pesticide, the maximum absorption spectra formulated at 421 nm and unformulated pesticide at 520 nm were observed. The size distribution was noted at 40 - 50 nm. The bioactivity study was conducted against various Aspergillus niger. The performance of nano particles was many fold times effective when compared to the original parental particles. The bio-assay of Nano-acetamiprid shows better results when compared to the normal commercial acetamiprid.

Solving the Stress Problem in a Sharp Wedge-Whaped Cutting Tool Using the Quick Decomposition Method and the Problem of Matching Boundary Conditions

The fast decompositions method in analytical form was used to solve the elastic problem with mixed boundary conditions for stresses in a sharp wedge-shaped cutting tool of finite dimensions in the form of a truncated sector. A load is applied to the faces of the wedge and its nose, which rapidly decreases with distance from the nose. At a larger radius, the wedge is rigidly fixed. The resulting solution is valid for any angle of the wedge spread. If we take a small enough inner radius and the angle of the spread, then the shape of the proposed cutter will be close enough to real. The influence of the angle of the spread and the inner radius of the wedge on the magnitude and location of the highest stress σ was investigated. The critical dimensions of the wedge were found, but for any of its sizes the stresses are finite everywhere.

Faba Bean Organs Differed in Their Effects on Maize Seed Germination Rate and Soil Microbial Activities as well as Their Decomposition Patterns in a Regosol Soil

This study was purposely designed to evaluate the potential of faba bean (Vicia faba) residues as green manure in a maize-faba bean rotation system. Seed germination test and pot experiments were conducted to measure the effects of aqueous extract on maize seed germination and the effects of residues on crop growth and soil microbial activities. Litterbag experiment was conducted to analyze the decomposition patterns of faba bean residues during maize growing season in a regosol soil. The faba bean was separated into roots, stems, leaves, aboveground parts, and whole plants. Seed germination and the lengths of radicle and plumule were lower than those of the control, particularly with 1% aqueous extract concentrations. Aboveground biomass of maize at heading stages was negatively reduced by whole plant, aboveground part, and stem, whereas positively increased by leaf. Faba bean residues varied in their influences on the contents of soil microbial nitrogen and carbon as well as enzyme activities, mainly attributing to their differences in nutrient quality and allelophathy. Faba bean residues showed a quick decomposition rate during the first 5 weeks and slightly decomposed thereafter. The amount of nitrogen (N) released into soil ranged from 3.74 kg N ha−1 in root to 34.67 kg N ha−1 from leaf in the first 5 weeks. Compared with other plant parts, there were more remaining residues in root and stem residues. These results suggest that different management strategies should be taken to balance their negative and positive effects when using faba bean residues as green manure.

Hypoxia-Irrelevant Photonic Thermodynamic Cancer Nanomedicine.

The hypoxic tumor microenvironment severely lowers the therapeutic efficacy of oxygen-dependent anticancer modalities because tumor hypoxia hinders the generation of toxic reactive oxygen species. Here we report a thermodynamic cancer-therapeutic modality that employs oxygen-irrelevant free radicals generated from thermo-labile initiators for inducing cancer cell death. A free radical nanogenerator was engineered via direct growth of mesoporous silica layer onto the surface of two-dimensional Nb2C MXene nanosheets toward multifunctionality, where the mesopore provided the reservoirs for initiators and the MXene core acted as the photonic-thermal trigger at the near-infrared-II biowindow (NIR-II). Upon illumination by a 1064 nm NIR-II laser, the photothermal-conversion effect of Nb2C MXene induced the fast release and quick decomposition of the encapsulated initiators (AIPH) to produce free radicals, which promoted cancer cell apoptosis in both normoxic and hypoxic microenvironment. Systematic in vitro and in vivo evaluations have demonstrated the synergistic-therapeutic outcome of this intriguing photonic nanoplatform-enabled thermodynamic cancer therapy for completely eradicating the 4T1 tumors without recurrence by NIR-II laser irradiation. This work pioneers the thermodynamic therapy for oxygen-independent cancer treatment by photonic triggering at the NIR-II biowindow.

Enhancing organic waste decomposition with addition of phosphorus and calcium through different sources

PurposeThis study assessed the constituent element in rock phosphate (RP) that is responsible for enhancing quick decomposition of cow dung–waste paper mixtures during vermicomposting.MethodFeedstock weighing 5 kg was achieved by mixing 2.16 kg shredded waste paper together with 2.84 kg cow dung sprinkled with water and then enriched with (1% P) as RP from triple superphosphate (TSP), phosphoric acid (PHA) and Ca in the form of CaCl2 at the level supplied by RP. After mixing, they were loaded into vermireactors and inoculated with matured earthworms at a stocking density of 12.5 g worms/kg feed for the entire 56 days. The decomposition of the mixtures was then monitored by measuring maturity parameters, a germination test for phyto-toxicity and morphological properties was assessed using scanning electron microscopy (SEM).ResultResults revealed that rapid decomposition of waste was recorded where TSP was applied than RP whereas Ca-source had the least effect. A C:N ratio of 12 was achieved within 28 days where TSP was added, while RP, PHA and CaCl2 needed 42, 56 and more than 56 days, respectively.ConclusionIt was evidently revealed from the results that P was basically the cause of the improved decomposition of the waste mixtures. To achieve quicker and well-humified enriched vermicompost with a C:N ratio of 10 within 20 days of vermicomposting, add water-soluble P sources.