Vermicompost as natural adsorbent for removing metal ions from laboratory effluents

Matos, Geraldo Domingues; Arruda, Marco Aurélio Zezzi

doi:10.1016/s0032-9592(02)00315-1

Cited by 78 publications

(44 citation statements)

References 35 publications

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“…The second set of factors is not related to closure of stomata, these include chlorophyll content, a decrease in Rubisco content and activity, inhibition of the synthesis of ribulose-1,5-bisphosphate and a decrease in transport of photosynthetic electrons to the PSII (Pagter et al 2005). VC is rich in humic compounds and researchers has speculated that the hormone-like activities of humic substances play a role in amelioration of water deficit stress (Matos and Arruda 2003). Humic substances in VC have high capacity for absorption of metal from the presence of negatively charged groups such as carboxylic acid and phenolic acids (Matos and Arruda 2003).…”

Section: Discussionmentioning

confidence: 99%

“…VC is rich in humic compounds and researchers has speculated that the hormone-like activities of humic substances play a role in amelioration of water deficit stress (Matos and Arruda 2003). Humic substances in VC have high capacity for absorption of metal from the presence of negatively charged groups such as carboxylic acid and phenolic acids (Matos and Arruda 2003). Soil mixed with VC contains iron (Arancon et al 2004).…”

Section: Discussionmentioning

confidence: 99%

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Effect of vermicompost fertilizer on photosynthetic characteristics of chickpea (Cicer arietinum L.) under drought stress

2016

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Water availability is an important factor for plant growth in arid environments. In recent decades, vermicompost (VC) fertilizer has been used in agriculture as a safe and effective fertilizer with high water-holding capacity. The aim of the present study was to characterize effects of VC fertilizer on photosynthetic activity of chickpea (Cicer arietinum L. cv. karaj) under drought conditions at three growth stages. Tests were done at five volumetric ratios of vermicompost to soil: 0:100, 10:90, 20:80, and 30:70; and three levels of drought stress; non-stress (NS), moderate drought stress (MS), and severe drought stress (SS) (100, 75, and 25% of field capacity, respectively). Evaluations were made for chlorophyll content, gas exchange, and chlorophyll fluorescence at different growth stages: a seedling, flowering, and podding stage. Results demonstrated that VC treatment under NS conditions significantly increased total chlorophyll content [Chl (a+b)], intercellular CO2 concentration (C i ), net photosynthetic rate (P N ), transpiration rate (E), and maximal quantum yield of PSII photochemistry (F v /F m ) at all three stages. The VC addition at 10 and 20% significantly enhanced Chl content and F v /F m under MS and F v /F m , C i , and P N under SS at the flowering stage. In conclusion, the above results showed that VC fertilizer had a positive effect on photosynthesis of chickpea under NS conditions, but no positive effect was found under

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of vermicompost fertilizer on photosynthetic characteristics of chickpea (Cicer arietinum L.) under drought stress

2016

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“…Therefore, this situation makes it no longer attractive to be widely used in small-scale industries because of cost inefficiency. Due to the problems mentioned previously, research has been interested into the production of alternative adsorbents, especially those which have metal-binding capacities and are able to remove unwanted heavy metals from contaminated water at low cost like natural zeolite, ash, rice husk, vermicompost, peat, volcanic stones, bentonite and clinoptilolite for adsorption of heavy metal ions (Chuah, 2005, Erdem, 2004, Alessia, 2007, Babel and Kurniawan, 2003, Viraraghavan and Rao, 1991, Matos and Arruda, 2003, Naseem and Tahir, 2001, Inglezaki et al, 2007, Brown et al, 2000. There are several surveys conducted to innovate and test low cost and efficient materials such as removing iron from groundwater by ash, multi-component adsorption of Ag (I), Cd (II) and Cu (II) by natural carbonaceous materials, adsorption of metal ions on lignin (Hanzlik et al, 2004;Guo et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Pb and Co removal from paint industries effluent using wood ash

Malakootian

Almasi

Hossaini

2008

Int. J. Environ. Sci. Technol.

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ABSTRACT:The release of heavy metals into the environment is a worldwide major concern. Different studies have demonstrated that natural agents have a high removal capacity for divalent heavy metal ions. Wood ash is a natural adsorbent and, in comparison with others, has a very low price. In this study, the removal of heavy metals (Pb and Co) from Binalood paint industry (Kerman, Iran) effluent was investigated in batch condition. Pb and Co measurement in samples were done with atomic absorption equipment and test methods were adapted from standard methods for the examination of water and wastewater. The effect of pH and the amount of adsorbent was determined and different adsorption isotherms were also obtained. This study shows that the adsorption process follows the adsorption Langmuir isotherm. The amount of wood ash has a great role in the adsorption rate and adsorption rate increased as wood ash increased. In the study, the reactions reached equilibrium in 3 h contact time. The maximum Pb removal efficiency was 96.1% at pH 2 with a contact time of 3 h and 100 g/L wood ash and the maximum Co removal efficiency was 99 % at pH 2 with a contact time of 3 h and 100 g/L wood ash. According to the results, wood ash is recommended as a low cost and available adsorbent to remove Pb and Co from municipal and industrial wastewaters.

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“…As a result of their peculiar characteristics, vermicompost is extensively reported as an efficient adsorbent for metallic ions Arruda 2003, 2004;Jordão et al 2007Jordão et al , 2002Matos and Arruda 2003). Vermicompost has also been evaluated to diminish the availability of pesticide residues in soils, decreasing the potential risk of leaching to the groundwater (Fernández-Bayo et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Vermicompost for Tinted Organic Cationic Dyes Retention

Pereira

Korn

Santos

et al. 2008

Water Air Soil Pollut

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The use of vermicompost was expanded as natural adsorbent for cationic dyes retention. The adsorption profiles in batch and flow modes for crystal violet and methylene blue on vermicompost material were evaluated. In batch mode, a retention index higher than 97% was obtained for both compounds, while in flow condition, 40 g of dried adsorbent material were enough to remove 100 mg of crystal violet or methylene blue at column flow rates of 5 and 20 mL min −1 . Adsorption isotherms showed adsorptive maximum capacities for vermicompost of 0.78 and 5.47 mg g −1 , respectively, which were compatible with the literature. Due to this good efficiency capacity, incineration steps can be considered as acceptable disposal procedures for enriched vermicompost. From these characteristics, economical and environmental advantages of the proposed material for the evaluated cationic dyes retention were evidenced.

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Vermicompost as natural adsorbent for removing metal ions from laboratory effluents

Cited by 78 publications

References 35 publications

Effect of vermicompost fertilizer on photosynthetic characteristics of chickpea (Cicer arietinum L.) under drought stress

Effect of vermicompost fertilizer on photosynthetic characteristics of chickpea (Cicer arietinum L.) under drought stress

Pb and Co removal from paint industries effluent using wood ash

Vermicompost for Tinted Organic Cationic Dyes Retention

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