Enhancing nutrient recovery and compost maturity of coconut husk by vermicomposting technology

Swarnam, T. P.; Velmurugan, A.; Pandey, Sanjay Kumar; Roy, S. Dam

doi:10.1016/j.biortech.2016.01.046

Cited by 68 publications

(19 citation statements)

References 20 publications

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“…At the end of the vermicomposting process TOC values were 18.21% (CR); 18.60% (M1); 18.98% (M2) and 18.21% (M3) ( Table 3). These values were found within the range reported in the literature which were 15.75 to 38% [33,53,56,61,62,65]. Based on the aforementioned data, TOC removal percentages in the vermicomposting process for the four mixes were 45.78% (CR) 44.60% (M1); 36.40% (M2) and 40.59% (M3), which coincides with consulted studies [32,33].…”

Section: Total Organic Carbonsupporting

confidence: 89%

“…Later pH values increased, remaining above 6, which indicated a probable mineralization of protein process with the generation of ammonia [32], to continue in a range between 6 to 7, as opposed to M2 that increased up to 7.5 between weeks 3 and 5 to drop down later. The last weeks the M3 s pH level increased to 7.5, whereas the rest remained between 6 and 7. pH values for all four reactors during the vermicomposting process remained within the 5 to 7.5 range, which coincided with other consulted studies [38,50,[53][54][55][56]. Final pH values for reactors M1, M2 and M3 (7.1, 6.3, 7.5 respectively) were above that of the CR (6.2), possibly due to intestinal calcium found in the earthworms that can stabilize pH levels [48].…”

Section: Phsupporting

confidence: 88%

“…Final values for the C/N relationship in the four mixes were 12.14 (CR), 9.79 (M1), 15.81 (M2) and 8.28 (M3). These values resulted under 20, as per local norm for earthworm compost [54], they also supported what has been reported by different authors [30,32,33,53,56,61,64,[68][69][70][71]. Iglesias and Pérez [72] concluded a C/N relation beneath 20 can be considered a necessary condition for compost maturity, but values under 12 are more adequate to guarantee the degree of maturity.…”

Section: C/n Relationsupporting

confidence: 85%

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Pre-Composting and Vermicomposting of Pineapple (Ananas Comosus) and Vegetable Waste

et al. 2019

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In the last few years, pineapple (Ananas comosus) has grown to be considered one of the most important fruits worldwide due to its high production and consumption. However, inadequate disposal of the waste it generates, which represents up to 67% of its total weight, can have environmental impacts. Therefore, this study focuses on the degradation of organic waste produced in the industrialized processing of pineapple waste (rinds, crowns and cores), which undergo a process of vermicomposting at a laboratory level. The methodology used included the pre-composting process and vermicomposting through Californian red worms using mixes tested in three different proportions of pineapple waste (PR) and load material (LM) made up of vegetable waste and eggshells. Testing revealed that the pre-composting process for this waste was feasible as a first stage of the degradation process; the characteristics of the pre-composted material allowed a favorable adaptation for both the worms and general degradation. It also showed efficiencies in the removal of organic carbon between 36.40% and 45.78%. Results also showed the total nitrogen content remained between 1.2% and 2.2% and the carbon/nitrogen relation (C/N) had values under 20 as required for high-quality vermicompost.

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Section: Total Organic Carbonsupporting

confidence: 89%

Section: Phsupporting

confidence: 88%

Section: C/n Relationsupporting

confidence: 85%

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Pre-Composting and Vermicomposting of Pineapple (Ananas Comosus) and Vegetable Waste

et al. 2019

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“…When waste is composted, generally there is a decrease in the C/N ratio with time due to losses of C as CO2, which stabilizes in the range of 15-20 [58]. Many authors [59][60][61] reported that values of the C/N ratio less than 20 indicates an acceptable maturity, and a ratio of 15 or less is suitable for agronomic use.…”

Section: Farmers' and Advisors' Preferences After The Hands-on Experimentioning

confidence: 99%

Reuse of Animal Manure: A Case Study on Stakeholders’ Perceptions about Pelletized Compost in Northwestern Italy

2018

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Abstract:The present study aimed at investigating perceptions and preferences about the use and the chemical characteristics of pellets made from composted animal manure in a sample of Italian farmers and agricultural advisors (Piedmont region, Northwestern Italy). The study encompassed two different steps: At first, the participants were administered a questionnaire about their actual use of pellets and preferences about their chemical characteristics. Then, a subgroup participated into a hands-on experience with different pelletized animal manures and some final questions. Concerning the use of pellets made from composted animal manure, even if the participants affirmed to be interested in using organic pellets and declared to own the appropriate equipment needed for their application, the results indicated that pelletized compost utilization had not yet become a common practice for agricultural crops. The obtained results highlighted a lack of knowledge, especially among farmers, about the importance of some chemical properties of this pelletized organic material. The participants, both farmers and advisors, were particularly attracted by the total nitrogen content of organic pelletized fertilizers, probably because the supplying of nutrients, nitrogen particularly, is the function of fertilizers they were interested in the most due to its direct connection with crop production. The hands-on session allowed the participants to better understand the benefits of the principal chemical properties-organic matter and carbon to nitrogen ratio-of pelletized animal manure compost. On the other hand, organic matter content and carbon to nitrogen ratio, more related with biological fertility and biodiversity of soils, are immediately less interesting and, as the hands-on experience pointed out, require more effort to be appreciated by agricultural operators. Targeted information campaigns and training activities may be developed among the agricultural community to make them aware of the importance of increasing soil organic matter content, and the possible use of pelletized composted animal manure. Further studies should be addressed toward gaining more insights into the beneficial effects of the information and training activities for pelletized compost adoption.

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“…For example, fruit wastes are amended with soybean husk and rice husk (Lim, Wu, Sim, Yih, & Lim, ; Lim et al., ). Some feedstocks are amended with bulking agents to provide the required nutrient contents, such as N (Hanc & Chadimova, ; Swarnam, Velmurugan, Pandey, & Dam Roy, ) (e.g., decomposition of Bursera graveolens leaves required the addition of bulking agents, such as king grass residues, kitchen leftovers, and pig and goat manure) (Carrión‐Paladines, Fries, Gómez‐Muñoz, & García‐Ruiz, ). Similarly, cashew leaf litter required the addition of bulking agents such as cow dung, sheep dung, and horse dung to promote better decomposition (Parthasarathi, Balamurugan, Prashija, Jayanthi, & Basha, ).…”

Section: Properties Of Vermicompostmentioning

confidence: 99%

Vermicomposting: A sustainable tool for environmental equilibria

Singh

2017

Environmental Quality Mgmt

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Improperly managed organic waste constitutes a serious environment threat across the globe. This has led to a worldwide struggle to strike a balance between the rapid generation of such wastes and protection of the environment. With the unique advantages of lower operational and maintenance costs compared with other waste management technologies, the use of vermicomposting to manage organic wastes has been increasing rapidly in recent years. Still, some factors (e.g., characteristics of substrate composition before and after treatment) are in need of additional, specific studies so that researchers can better understand the metabolism involved in the process. Vermicomposting provides employment opportunities as it protects the environment, augmenting crop productivity when it is used as a fertilizer supplement and helping to maintain ecological balance. Thus, vermicompost plays an important role in the circular economy. This article provides an overview of the research activities that have been conducted on the use of vermicomposts to remove pollutants from the soil, in wastewater treatment, and in organic waste recycling throughout the world. Circular economic assessment has revealed that vermicomposting technology is usually feasible except in certain cases. Most other methods of waste disposal lead to soil deterioration, toxic effects, and increased pollution affecting land, air, water, and living beings, in addition to the sometimes considerable expense of their implementation. Thus, an eco‐friendly method that removes waste in one step is needed. Determining the long‐term performance and sustainable operation of vermicomposting systems still poses a challenge, however, as treatment performance is affected by design parameters, operational conditions, and environmental factors. This article summarizes the factors influencing pollutant removal through the vermicomposting process. Finally, this article highlights additional research that should be conducted on these issues to improve the performance of vermicomposting.

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Enhancing nutrient recovery and compost maturity of coconut husk by vermicomposting technology

Cited by 68 publications

References 20 publications

Pre-Composting and Vermicomposting of Pineapple (Ananas Comosus) and Vegetable Waste

Pre-Composting and Vermicomposting of Pineapple (Ananas Comosus) and Vegetable Waste

Reuse of Animal Manure: A Case Study on Stakeholders’ Perceptions about Pelletized Compost in Northwestern Italy

Vermicomposting: A sustainable tool for environmental equilibria

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