A study of heavy metals and their fate in the composting of tannery sludge

Haroun, Mahdi; Azni, I.; Omar, S. R. Syed

doi:10.1016/j.wasman.2006.09.006

Cited by 65 publications

(31 citation statements)

References 12 publications

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“…In trial 4, the F5 fraction of Cd was increased, but F1 and F2 fractions were declined with the composting age. One possible explanation for the reduction of F1 and F2 fractions and an increase in F5 fraction in trial 4 may be due to the ability of Cd to chemically bond strongly with organic materials [35]. The decrease in F1 and F2 fractions of Cd could be due to the increase of pH during the composting process (from 5.3 to 7.4).…”

Section: Speciation Of Ni Pb CD and Crmentioning

confidence: 99%

Bioconversion of flowers waste: Composting using dry leaves as bulking agent

Sharma

Yadav

2017

Environmental Engineering Research

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Studies were carried out on the speciation of heavy metals (Zn, Cu, Mn, Fe, Ni, Pb, Cd, and Cr) during rotary drum composting of water hyacinth (Eichhornia crassipes) for a period of 20 days. Five different proportions of cattle manure, water hyacinth and sawdust were prepared for composting. This study concluded that, rotary drum was very efficient for the degradation of organic matter as well as for the reduction of mobility and bioavailability of heavy metals during water hyacinth composting. The results from the sequential extraction procedure of heavy metals shows that rotary drum composting changed the distribution of five fractions of Zn, Cu, Mn, Fe, Ni, Pb, Cd, and Cr. The highest reduction in the bioavailability factors of Pb and Cd was observed during the process. The total concentration of Cu, Cr, and Cd was very low compared to the other metals (Zn, Mn, Fe, Ni, and Pb); however, the percentage of exchangeable and carbonate fractions of these metals was similar to other metals. These results confirmed that the bioavailability of metals does not depend on the total concentration of metals. From this study, it can be concluded that the addition of an appropriate proportion of cattle manure significantly reduced the mobile and easily available fractions (exchangeable and carbonate fractions) during water hyacinth composting in rotary drum.

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Section: Speciation Of Ni Pb CD and Crmentioning

confidence: 99%

Bioconversion of flowers waste: Composting using dry leaves as bulking agent

Sharma

Yadav

2017

Environmental Engineering Research

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“…Furrows subjected to higher rates of aeration or frequent plowings shifts have higher N losses (HAO & CHANG, 2001;RAVIV et al, 2004;PEIGNÉ & GIRARDIN, 2005, BRITO et al, 2008BERNAL et al, 2009, SHEN et al, 2011. While furrows managed on patios without coverage present leaching of nutrients, reducing the agronomic value of the produced compost (CEKMECELIOGLU et al, 2005;HAROUN et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Nutrient loss in composting of agroindustrial residues

Carneiro¹,

Costa

Costa³

et al. 2013

Eng. Agríc.

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ABSTRACT:The management of composting may influence the characteristics of the produced compounds. The experiment used three frequencies of plowing, combined with the conditions: with and without coverage of the composting patio, with and without the use of commercial inoculant, resulting in 12 furrows, installed on the Experimental Center of Agricultural Engineering (NEEA), of the STATE UNIVERSITY OF WEST PARANÁ (UNIOESTE), Campus of Cascavel city -state of Paraná (PR), in Brazil. The waste and quantities used in kg were: corn cob (7.5); hatchery residue (5); floater sludge (31); ash (1); wheat cleaning residue (120); wheat pre-cleaning residue (120); corn peel (7.5); solid fraction of wash trucks used to transport chickens (2); solid fraction of pig manure (1) and coal (5), totaling 300kg of natural matter. The aim of this study was to evaluate the influence of plowings, patio coverage and inoculation in losses of N, P, K, Ca, Mg, Na, Cu, Zn, Mn, Fe. The furrows plowed three times a week in the first month showed significant higher losses of N (p<0.05). The coverage of the composting patio influenced significantly the losses of N, K, Mg and Na (p<0.05). The produced compounds had a high agronomic value in relation to macro and micronutrients. It is recommended the use of patio coverage and plowing twice a week in the first month and once a week in the subsequent months for a compound with higher concentrations of nutrients.

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“…However in most cases the sewage sludge used in these research is characterised by a chromium content of no more than 1000 mg/kg being which is extremely low considering its origin. Haroun et al (2007;) composted tannery sludge with a chromium content of 350-500 mg/kg mixed with sawdust, chicken droppings and rice bran (100 kg, 50 kg, 30 kg and 20 kg respectively) in piles turned manually every 10 days. After 60 days the obtained compost was characterized by a chromium content of 100 mg/ kg allowing for agricultural use in the country of the Authors.…”

Section: Tannery Sludge Management For Sustainable Developmentmentioning

confidence: 99%

The Problems in Achieving Sustainable Development in the Tannery Industry in Regard to Sewage Sludge Management

Bień¹,

Celary²,

Wystalska³

2017

J. Ecol. Eng.

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The paper discusses the issue of tannery sewage sludge management as one of the barriers in reaching sustainable development in the tanning industry. The Authors present the main characteristics, and its origins, of tannery sludge limiting the possibilities of their treatment and review the proposed solutions found in literature. The paper focuses on identifying the strong and weak points of the most commonly used methods used for sewage sludge treatment as well as presents some novel approaches which remain at laboratory stage.

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A study of heavy metals and their fate in the composting of tannery sludge

Cited by 65 publications

References 12 publications

Bioconversion of flowers waste: Composting using dry leaves as bulking agent

Bioconversion of flowers waste: Composting using dry leaves as bulking agent

Nutrient loss in composting of agroindustrial residues

The Problems in Achieving Sustainable Development in the Tannery Industry in Regard to Sewage Sludge Management

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