Particle Size Effects on Uptake of Heavy Metals from Sewage Sludge Compost Using Natural Zeolite Clinoptilolite

Zorpas, Antonis A.; Inglezakis, Vassilis J.; Loizidou, M.; Grigoropoulou, H.

doi:10.1006/jcis.2002.8246

Cited by 56 publications

(29 citation statements)

References 8 publications

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“…Zorpas et al [37] reported that the heavy metals contents were greatly decreased by approximately 100, 17, 31.7, 35.1, 24.0, 60.0, 56.7, and 47.9% for Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn, respectively, in the process of composting of sewage sludge with zeolite. Zorpas et al [38] concluded that the addition of 25% (w/w) zeolite in compost is adequate to eliminate around 12-60% of the heavy metals during sewage sludge composting. Sprynskyy et al [14] reported that the addition of 9.09% clinoptilolite to the sludge reduced the total concentration of metals to around 11-51%.…”

Section: Total Concentration Of Heavy Metalsmentioning

confidence: 99%

Effects of Natural Zeolites on Bioavailability and Leachability of Heavy Metals in the Composting Process of Biodegradable Wastes

Singh¹,

Kalamdhad²,

Lee³

2016

Zeolites - Useful Minerals

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The bioavailability and leachability of heavy metals play an important role in the toxicity of heavy metals in the final compost followed by land application. This chapter examines the effects of natural zeolite on bioavailability of heavy metals (Zn, Cu, Mn, Fe, Ni, Pb, Cd, and Cr) in the form of water soluble and diethylenetriaminepentaacetic acid (DTPA) extractable. The toxicity characteristic leaching procedure (TCLP) test was performed to examine the leachability of heavy metals. Water solubility, DTPA extractability, leachability, and most bioavailable fractions were reduced during agitated pile composting (APC) and rotary drum composting (RDC) of water hyacinth with zeolite addition. The addition of the natural zeolite (clinoptilolite) during the composting process led to an increase in Na, Ca, and K concentrations and significantly reduced the water solubility and DTPA and TCLP extractability of heavy metals. The addition of an appropriate amount of natural zeolite during the composting process enhanced the organic matter degradation, thereby increasing the conversion into the most stabilized organic matter and reducing the bioavailability and leachability of heavy metals.

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Section: Total Concentration Of Heavy Metalsmentioning

confidence: 99%

Effects of Natural Zeolites on Bioavailability and Leachability of Heavy Metals in the Composting Process of Biodegradable Wastes

Singh¹,

Kalamdhad²,

Lee³

2016

Zeolites - Useful Minerals

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“…Used clinoptilolite is eventually incorporated into cement together with nuclear wastes (Atkins et al, 1995), into sewage sludge compost (Zorpas et al, 2002) or land-deposited. The stability of such metalloaded zeolites is then of environmental importance, since eventual heavy metal leaching into surface or groundwater may constitute an environmental hazard.…”

Section: Introductionmentioning

confidence: 99%

Leaching of lead from clinoptilolite at acidic conditions

2013

Global NEST Journal

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The leachability of Pb 2+ from natural greek clinoptilolite was investigated according to the standard procedures TCLP/EPA/RCRA (1311), EPA Methods 1310, 1320 and DIN 38414-S4. Through SEM/EDAX analysis it was shown that lead was uniformly loaded onto the particles subjected to acid treatment. Sorption was fast during the first few hours and equilibrium was practically attained after 24 h. pH was the dominant factor affecting leaching and for values 3 and higher less than 1% of the metal was leached out while at pH=1 up to 20% of the lead initially present on the solid was leached out. At 1.5 and 2, lead was re-adsorbed after initial leaching. % leaching after 24h was found to increase with increasing initial load (17 to 44% for 15 to100 mgPb ) and lowered the average pore diameter (from 80.8 to 42.9 Å) of the clinoptilolite particles.

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“…For example, clinoptilolite, which is the most abundant natural zeolite (Italy, Croatia, Turkey, Greece, and Romania) was shown to be an efficiently remover of NH (Ouki and Kavannagh, 1997;Langella et al, 2000;Cincotti et al, 2001;Badillo-Almaraz et al, 2003;Panayotova and Velikov, 2003;Erdem et al, 2004;Peric et al, 2004;Top and Ulku, 2004;Bedelean et al, 2006;Stanca et al, 2006;Burcă et al, 2008). Clinoptilolite can also be used as an amendment to sewage sludge or soil in order to stabilize the heavy metal ions and to prevent their entering in the ecosystem by leaching (Zorpas et al, 2000a(Zorpas et al, , 2000b(Zorpas et al, , 2002Moirou et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Investigations on some zeolitic volcanic tuffs from Cluj County (Romania), used for zinc ions removal from aqueous solution

Bedelean¹,

Măicăneanu²,

Burcă³

et al. 2010

Studia UBB, Geologia

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ABSTRACT. Representative samples of zeolitic tuffs from Măcicaş, Aluniş, and Apahida occurrences (Cluj County, Romania) were investigated using optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and wet chemical analyses. The studied tuff samples are represented mainly by vitric and vitric crystal varieties. The mineral assemblage suggests a rhyodacitic volcanic tuff. Diagenetic alteration led to the formation of zeolites, mainly clinoptilolite. Zn 2+ removal was performed on some bulk samples: Aluniş (labelled A1), Apahida (Ap), and Măcicaş (M2) grain size of 0.2-0.4 mm. Each sample was chemically modified with HCl 1M (Z-H form) and NaCl + NaOH 1M pH = 10 (Z-Na form). The ionic exchange experiments were performed in a batch reactor (immobile phases) and in a fixed bed column. Ionic exchange efficiencies for the samples considered are presented for static and dynamic regimes. Removal efficiencies higher than 53.97% and exchanged Zn 2+ quantities higher than 1.05 mg/g were obtained. Therefore, the zeolitic tuffs under investigation are considered to be active in the ionic exchange process and can be used in wastewaters treatment to remove Zn 2+ ions. The results for all the samples considered in batch and fixed bed experiments are presented by means of cation exchange capacity (CEC) and removal efficiency.

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Particle Size Effects on Uptake of Heavy Metals from Sewage Sludge Compost Using Natural Zeolite Clinoptilolite

Cited by 56 publications

References 8 publications

Effects of Natural Zeolites on Bioavailability and Leachability of Heavy Metals in the Composting Process of Biodegradable Wastes

Effects of Natural Zeolites on Bioavailability and Leachability of Heavy Metals in the Composting Process of Biodegradable Wastes

Leaching of lead from clinoptilolite at acidic conditions

Investigations on some zeolitic volcanic tuffs from Cluj County (Romania), used for zinc ions removal from aqueous solution

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