Differences in the mobility of Cd, Cu, Pb and Zn during composting of two types of household bio-waste collected in four seasons

Hanč, Aleš; Száková, Jiřina; Ochecova, Pavla

doi:10.1016/j.biortech.2014.01.125

Cited by 18 publications

(12 citation statements)

References 26 publications

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“…The remaining elemental contents (except Ca) were found to be within the Sorghum straw + saw dust Total N% Total P% Total K% Fig. 4 NPK dynamics of the finger millet straw, sorghum straw, soybean straw and sorghum straw + saw dust during the composting process standard limits for composts according to Indian fertilizer control order (1985) as well as in agreement with several other research efforts using different ligno-cellulosic wastes including food and municipal solid wastes (Hseu 2004;Awasthi et al 2014;Singh and Nain 2014;Hanc et al 2014).…”

Section: Elemental and Npk Dynamicssupporting

confidence: 87%

Physico-chemical, microbial and phytotoxicity evaluation of composts from sorghum, finger millet and soybean straws

Jagadabhi

Wani

Kaushal

et al. 2018

Int J Recycl Org Waste Agricult

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Purpose Composting is an environmentally sustainable alternative for bioconversion of agricultural residues into a nutrientrich product that can enhance soil fertility/microbial diversity and thereby improve agricultural productivity. The goal of the current study was to evaluate the decomposition pattern of the agro-residues and assess the maturity and phytotoxicity of the composts obtained using physico-chemical, microbial and statistical analyses. The study also attempted to determine a threshold germination index (GI) to serve as a maturity index for the composts by conducting seed germination assays with tomato, chickpea and soybean seeds. Methods Three agricultural residues/straws of Eleusine coracana (finger millet), Sorghum bicolor (sorghum) and Glycine max (soybean) were subjected to aerobic composting for a period of 60 days to study the impact of saw dust on the decomposition pattern and the ultimate compost quality/characteristics. Results The results showed efficient decomposition pattern of the agricultural residues characterized by high temperature profiles (up to 70 °C), high microbial activity, a sharp decrease in C/N ratio of the composting materials, i.e., from an initial 41-61 to final 10-17. Conclusions Statistical evaluation of seed germination assays showed that only the compost obtained from sorghum straw + saw dust was mature and free from any phytotoxicity as all the tested seeds showed higher and statistically significant GIs. It was difficult to attribute a single threshold GI value to indicate maturity of compost and could not further be applied to different types of composts as different seeds responded differently to the same compost.

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Section: Elemental and Npk Dynamicssupporting

confidence: 87%

Physico-chemical, microbial and phytotoxicity evaluation of composts from sorghum, finger millet and soybean straws

Jagadabhi

Wani

Kaushal

et al. 2018

Int J Recycl Org Waste Agricult

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“…Nevertheless, disadvantages of composting are it is a slow process and takes a lot of space. According to Hanc, Szakova, & Ochecova [5], the advantages of composting are that it minimizes damage to the environment and produces economically valuable products from the bio-waste. Moreover, as an alternative waste disposal method, composting can divert waste from landfill, mitigate groundwater contamination, reduce air pollution and greenhouse gas (GHG) emissions, and generate useful products.…”

Section: Introductionmentioning

confidence: 99%

Food Waste Composting Study from Makanan Ringan Mas

Ismail

Jamaludin

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract:The poor management of municipal solid waste in Malaysia has worsened over the years especially on food waste. Food waste represents almost 60% of the total municipal solid waste disposed in the landfill. Composting is one of low cost alternative method to dispose the food waste. This study is conducted to compost the food waste generation in Makanan Ringan Mas, which is a medium scale industry in Parit Kuari Darat due to the lack knowledge and exposure of food waste recycling practice. The aim of this study is to identify the physical and chemical parameters of composting food waste from Makanan Ringan Mas. The physical parameters were tested for temperature and pH value and the chemical parameter are Nitrogen, Phosphorus and Potassium. In this study, backyard composting was conducted with 6 reactors. Tapioca peel was used as fermentation liquid and soil and coconut grated were used as the fermentation bed. Backyard composting was conducted with six reactors. The overall results from the study showed that the temperature of the reactors were within the range which are from 30° to 50°C. The result of this study revealed that all the reactors which contain processed food waste tend to produce pH value within the range of 5 to 6 which can be categorized as slightly acidic. Meanwhile, the reactors which contained raw food waste tend to produce pH value within the range of 7 to 8 which can be categorized as neutral. The highest NPK obtained is from Reactor B that process only raw food waste. The average value of Nitrogen is 48540 mg/L, Phosphorus is 410 mg/L and Potassium is 1550 mg/L. From the comparison with common chemical fertilizer, it shows that NPK value from the composting are much lower than NPK of the common chemical fertilizer. However, comparison with NPK of organic fertilizer shown only slightly difference value in NPK.

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“…Compost has the virtue of being a soil improver and also provides nutrients to plants [18,19]. However, due to the raw materials used, it can contain significant contents of heavy metals [18,[20][21][22][23][24]. It is known that green spaces with arboreal vegetation in an urban environment retain heavy metals in the foliage due to the precipitation of atmospheric dust produced mainly by the use of fossil fuels by vehicular traffic [7,[25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

“…Humic and fulvic acids are generated during the composting process, which can influence the mobility of metals and trace elements, thus reducing their bioavailability for plants [24,[37][38][39]. e total content of heavy metals and trace elements analyzed during the composting process is not an adequate indicator of their bioavailability [18,21].…”

Section: Introductionmentioning

confidence: 99%

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Bioavailability and Solubility of Heavy Metals and Trace Elements during Composting of Cow Manure and Tree Litter

Pinto

Meza-Contreras

Alegre-Orihuela

et al. 2020

Applied and Environmental Soil Science

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Objectives. To characterize the total content of heavy metals (Cd, Cr, Cu, Hg, Mo, Ni, Pb, and Zn) and trace elements (As and Se) of interest, their bioavailability and solubility during the composting of cow manure and tree litter in piles inoculated with beneficial microorganism (IBM), or not inoculated (NBM), on the university campus of the Universidad Nacional Agraria La Molina (UNALM). Methods. The investigation evaluated composting in six piles, three IBM piles and three NBM piles, for 120 days. Every 30 days, a composite sample was taken from each pile. The raw materials used were cattle manure and tree litter. The variables analyzed were the total concentrations (content) of metals and trace elements of interest, extracted with diethylenetriaminepentaacetic acid/pentatetic acid (DTPA) (for the bioavailability study) and extracted with deionized water (for the solubility study). Results. The average values (n = 3) of the total content (mg·kg−1) on day 120 in IBM were in the following order: Zn (404.33) > Cu (86.33) > Pb (71.2) > Cr (34.33) > As (28.0) > Ni (13.83) > Mo (2.86) > Se (1.38) > Cd (1.32) > Hg (0.39) and in NBM: Zn (466.0) > Cu (112.23) > Pb (73.23) > Cr (35.33) > As (29.67) > Ni (14.37) > Mo (3.23) > Se (1.55) > Cd (1.38) > Hg (0.38). The values complied with the Austrian Compost Standard for Landscaping and Land Rehabilitation and the Peruvian Standard for Nonorganic Agriculture. Significant differences were observed in some elements ( p < 0.05) between 0 and 120 days in both types of pile (IBM and NBM). Conclusions. For nonorganic agriculture in Peru, urban compost is recommended, whereby raw organic materials are inoculated with beneficial microorganisms during the composting process to reduce the bioavailability of Cu and Zn, as these elements showed less bioavailability than noninoculated piles. The composting process for both piles (IBM and NBM) reduced the solubility in Cu, Pb, and Zn.

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Differences in the mobility of Cd, Cu, Pb and Zn during composting of two types of household bio-waste collected in four seasons

Cited by 18 publications

References 26 publications

Physico-chemical, microbial and phytotoxicity evaluation of composts from sorghum, finger millet and soybean straws

Physico-chemical, microbial and phytotoxicity evaluation of composts from sorghum, finger millet and soybean straws

Food Waste Composting Study from Makanan Ringan Mas

Bioavailability and Solubility of Heavy Metals and Trace Elements during Composting of Cow Manure and Tree Litter

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