Vermicompost for Tinted Organic Cationic Dyes Retention

Pereira, Madson de Godói; Korn, Mauro; Santos, Bruno Barros; Ramos, Marcia Guia

doi:10.1007/s11270-008-9906-6

Cited by 23 publications

(13 citation statements)

References 24 publications

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“…As shown in the figure, the peak of Fe-BC3 is more intense at the same wavenumber than that of BC3, which indicates the formation of compounds with stronger bonds for the former biochar. The broad and less intense absorption peaks at 3415 cm −1 are mainly due to the vibration of –NH and –OH contained in amines, amides, alcohols, phenols and so on [19]. The symmetric and antisymmetric vibrations of –CH 2 and –CH 3 on aliphatic hydrocarbons are mainly located between 2950 and 2850 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

Simultaneous removal of fluoride and arsenic in geothermal water in Tibet using modified yak dung biochar as an adsorbent

et al. 2018

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Fluoride (F) and arsenic (As) are two typical and harmful elements that are found in high concentrations in geothermal water in Tibet. In this work, yak dung, an abundant source of biomass energy in Tibet, was made into biochars (BC1, BC2 and BC3) by pyrolysis under different conditions, and the better biochar was modified by FeCl2 (Fe-BC3). The adsorption conditions were optimized to adsorb F and As in geothermal water. The results showed that BC3 can remove 90% F− and 20% As(V), which is the best effect of the three initial biochars. Fe-BC3 could remove 94% F− and 99.45% As(V) under the same conditions as BC3, which was an adsorbent dosage 10 g l−1, pH 5–6 and temperature of 25°C. It was also demonstrated that the removal rate did not decrease at 80°C. A quasi-second-order kinetic model best described the adsorption behaviour of ions on the surface of the biochar. The maximum adsorption capacity of F− and As(V) on Fe-BC3 was 3.928 mg g−1 and 2.926 mg g−1, respectively. The features of Fe-BC3 were characterized by X-ray diffraction, Fourier transform infrared, Brunauer–Emmett–Teller, energy-dispersive spectrometer and scanning electron microscopy to understand the adsorption process.

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Section: Resultsmentioning

confidence: 99%

Simultaneous removal of fluoride and arsenic in geothermal water in Tibet using modified yak dung biochar as an adsorbent

et al. 2018

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“…There is evidence that the removal process occurs rapidly: high removal percentages are generally reached within short contact times, in some cases of minutes. De Godoi Pereira et al (2009) observed quantitative retention of crystal violet onto a vermicompost after 10 minutes and of methylene blue after only one minute. Anastopoulos et al (2018) also observed maximum adsorption of methylene blue after one minute of contact.…”

Section: Dye Removal Capacity and Nature Of The Removal Processmentioning

confidence: 99%

Potential use of composts and vermicomposts as low-cost adsorbents for dye removal: an overlooked application

Paradelo

Vecino

Moldes

et al. 2019

Environ Sci Pollut Res

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The use of composts and vermicomposts as adsorbents is an important topic of study in the field of environmental remediation. These materials are rich in organic matter and have functional groups that can interact with organic and inorganic compounds. They also contain microorganisms that can promote biodegradation of organic substances. Composts that cannot be used for agronomic purposes (owing to e.g. low nutrient levels or phytotoxicity) may be valuable for soil remediation or pollutant removal. In this review paper, we discuss other papers on this topic, with the objective of drawing attention to the potential use of composts and vermicomposts and to recommend further investigation on this subject. Few published studies have investigated the use of vermicomposts to remove dyes and other coloured compounds. However, preliminary results show that these materials are potentially good adsorbents, particularly for basic dyes. However, there remain several uncertainties regarding this application. For example, very few dyes have been studied so far, and little is known about the influence of the properties of composts/vermicomposts on the dye removal process. Moreover, the possible use of vermicompost to enhance biodegradation processes has not been explored. All of these questions should be addressed in future research.

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“…Decoloration of effluents stained by cationic dyes (crystal violet and methylene blue) was achieved with the help of vermicompost (de Godoi Pereira, Korn, Santos, & Ramos, 2009). Because of the dyes' large spatial pores, a greater amount of adsorption occurred than is typically the case with natural dyes.…”

Section: Vermicompost In Wastewater Treatmentmentioning

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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Vermicompost for Tinted Organic Cationic Dyes Retention

Cited by 23 publications

References 24 publications

Simultaneous removal of fluoride and arsenic in geothermal water in Tibet using modified yak dung biochar as an adsorbent

Simultaneous removal of fluoride and arsenic in geothermal water in Tibet using modified yak dung biochar as an adsorbent

Potential use of composts and vermicomposts as low-cost adsorbents for dye removal: an overlooked application

Vermicomposting: A sustainable tool for environmental equilibria

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