Extractability and phytotoxicity of heavy metals present in petrochemical industry sludge

Kumar, Narendra; Bauddh, Kuldeep; Kumar, Sanjeev; Dwivedi, Neetu; Singh, Devendra P.; Barman, S. C.

doi:10.1007/s10098-012-0559-1

Cited by 35 publications

(12 citation statements)

References 24 publications

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“…Due to scarcity of freshwater, industrial wastewater is used as an alternate water resource for irrigation of crops, mainly in peri-urban areas, due to its easy availability (Kumar et al, 2013a(Kumar et al, , 2013bVijayaragavan et al, 2011). Agricultural lands across the world are contaminated by heavy metals such as As, Cd, Cu, Cr, Ni, and Pb due to industrial waste and faulty irrigation practices (Yadav, 2010).…”

Section: Toxicity Assessment and Accumulation Of Metals In Radish Irrmentioning

confidence: 97%

Toxicity Assessment and Accumulation of Metals in Radish Irrigated With Battery Manufacturing Industry Effluent

Kumar

Bauddh

et al. 2014

International Journal of Vegetable Science

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Section: Toxicity Assessment and Accumulation Of Metals In Radish Irrmentioning

confidence: 97%

Toxicity Assessment and Accumulation of Metals in Radish Irrigated With Battery Manufacturing Industry Effluent

Kumar

Bauddh

et al. 2014

International Journal of Vegetable Science

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“…stimulate the efforts directed at the recovery of metals from spent batteries (Kang et al 2010;Li et al 2015), industrial sludges (Kumar et al 2013;Sethu et al 2008) and wastewater streams (Reddy and Park 2007). An example are copper electrorefineries that, besides cathode copper production, produce crude nickel sulphate (CNS) technical grade commercial product sold for its nickel value (Olejnik et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Removal of cobalt(II) and zinc(II) from sulphate solutions by means of extraction with sodium bis(2,4,4-trimethylpentyl)phosphinate (Na-Cyanex 272)

Regel‐Rosocka

Staszak

Wieszczycka

et al. 2016

Clean Techn Environ Policy

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The removal of Co(II) and Zn(II) from model and real crude nickel sulphate (CNS) solutions by extraction with sodium bis(2,4,4-trimethylpentyl)phosphinate (NaCyanex 272) is studied and compared with the effect of using bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272). The proposed novel approach to manage both hazardous metal ions from CNS with sodium salt of Cyanex 272 focuses on the following issues: (i) effect of the initial pH of feeds on the extraction efficiency, (ii) leaching of metal ions from CNS, (iii) efficiency and selectivity of metal ion extraction from real CNS, and (iv) FT-IR analysis of structure of complexes formed by the metal ions with the extractant studied. It is concluded that converting Cyanex 272 into its sodium salt greatly improves the efficiency of the extraction in comparison to the conversion into the acidic form of the extractant, regardless of the type of metal ion considered, whether Zn(II) or Co(II). These phenomena occurring in the extraction system are confirmed by the obtained FT-IR spectra of the organic phases after extraction and stripping.

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“…Though they are necessary in small quantities, these elements become toxic to plants when they are present at higher concentrations in the soil (Kumar et al, 2013). Lead (Pb) and cadmium (Cd) are not essential for the function of plants (Vesna et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…While natural occurrence is relatively rare, the number and intensity of anthropogenic sources, such as rubbish tips, APPLIED (Koch and Rotard, 2001). Anthropogenic sources of increased heavy metal content in both terrestrial and aquatic systems are common in urban areas (Kumar et al, 2013). Rapidly increasing population and unplanned urbanization are challenges to ecological balance (Gürcan et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

A Pilot Study to Determine the Substrate Threshold for Heavy Metal Toxicity in Groundcover Plants Used in Urban Landscapes

Ju¹

2016

Appl Ecol Env Res

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Ju et al.:A pilot study to determine the substrate threshold for heavy metal toxicity in groundcover plants used in urban landscapes -59 - Abstract. The objects of this pilot study were to determine the substrate threshold concentration for heavy metal toxicity, which is the highest permissible content in the substrates used in urban landscaping, and the maximum possible accumulation of heavy metals in shoots of Pachysandra terminalis and Vinca minor grown on substrate mixed with cadmium (Cd), lead (Pb), or zinc (Zn) for 90 days. Plants were transplanted into plastic containers filled with substrate, which had been previously treated with Cd (0, 25, 50, or 100 mg·kg -1 ), Pb (0, 250, 500 or 1,000 mg·kg -1 ), and Zn (0, 500, 1,000, or 2,000 mg·kg -1 ). The shoot dry weights of P. terminalis and V. minor were affected by the heavy metals in the substrate with the greatest degree by Cd. A 25 mg·kg -1 of Cd caused a reduction of about 63% and 30% of shoot dry weights of P. terminalis, and V. minor, respectively, compared to controls (Cd 0 mg·kg -1 ). There was no reduction in P. terminalis, and V. minor grown under both Pb 250 mg·kg -1 and 500 mg·kg -1 treatments. Under the Pb 1,000 mg·kg -1 treatment, a 3.7% of dry weight loss observed in P. terminalis compared to control (Pb 0 mg·kg -1 ); however, no reduction was found in V. minor. Zn-treated V. minor had no reduction of dry weight compared to controls (Zn 0 mg·kg -1 ), whereas in P. terminalis, about 11%, 26%, and 52% reductions were observed under Zn 500, 1,000, and 2,000 mg·kg -1 treatments, respectively. These results reveal that V. minor is more tolerant to Pb and Zn toxicity than is P. terminalis, and provide reference ranges for heavy metal concentrations in substrate that will be useful in further studies.

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Extractability and phytotoxicity of heavy metals present in petrochemical industry sludge

Cited by 35 publications

References 24 publications

Toxicity Assessment and Accumulation of Metals in Radish Irrigated With Battery Manufacturing Industry Effluent

Toxicity Assessment and Accumulation of Metals in Radish Irrigated With Battery Manufacturing Industry Effluent

Removal of cobalt(II) and zinc(II) from sulphate solutions by means of extraction with sodium bis(2,4,4-trimethylpentyl)phosphinate (Na-Cyanex 272)

A Pilot Study to Determine the Substrate Threshold for Heavy Metal Toxicity in Groundcover Plants Used in Urban Landscapes

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