Food waste composting: Its use as a peat replacement

Farrell, Mark; Jones, Davey L.

doi:10.1016/j.wasman.2010.01.032

Cited by 70 publications

(34 citation statements)

References 17 publications

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“…Changes in the concentrations of Cd in soil solutions kept the same trend as DGT determination. Similar studies with other organic materials (e.g., green catering, paper, municipal solid waste, biochar, and green waste) reported a statistical decrease of Cd and Zn in pore water (Beesley et al 2010;Farrell and Jones 2010). It was indicated that addition of organic amendments such as pig manure statistically decreased the partition of Cd in soil solution, the effect being more pronounced at higher added levels.…”

Section: Soil Solution Concentration Of CDsupporting

confidence: 60%

“…This phenomenon might be largely related to the lower bioavailability of Cd in soils by forming the complexes of Cd with organic matter compounds from pig manure, or by increasing pH value, or forming insoluble precipitates of Cd with inorganic phosphates, carbonates, and other salts mineralized from organic matter (Liu et al 2009;Farrell and Jones 2010;Tang et al 2015;Venegas et al 2015). Liu et al (2009) reported that the concentration of soil organic matter in Cd-contaminated soils increased by 0.2-1.9 times after chicken manure application, the organic bound Cd increased by 0.4-7.8 times.…”

Section: Plant CD Uptakementioning

confidence: 99%

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Evaluation of organic amendment on the effect of cadmium bioavailability in contaminated soils using the DGT technique and traditional methods

Yao

Sun

Wang

et al. 2015

Environ Sci Pollut Res

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Organic amendments have been widely proposed as a remediation technology for metal-contaminated soils, but there exist controversial results on their effectiveness. In this study, the effect of pig manure addition on cadmium (Cd) bioavailability in Cd-contaminated soils was systematically evaluated by one dynamic, in situ technique of diffusive gradients in thin films (DGT) and four traditional methods based on the equilibrium theory (soil solution concentration and the three commonly used extractants, i.e., acetic acid (HAc), ethylenediamine tetraacetic acid (EDTA), and calcium chloride (CaCl). Wheat and maize were selected for measurement of plant Cd uptake. The results showed that pig manure addition could promote the growth of two plants, accompanied by increasing biomasses of shoots and roots with increasing doses of pig manure addition. Correspondingly, increasing additions of pig manure reduced plant Cd uptake and accumulation, as indicated by the decreases of Cd concentrations in shoots and roots. The bioavailable concentrations of Cd in Cd-contaminated soils reflected by the DGT technique obviously decreased with increasing doses of pig manure addition, following the same changing trend as plant Cd uptake. Changes in soil solution Cd concentration and extractable Cd by HAc, EDTA, and CaCl in soils were similar to DGT measurement. Meanwhile, the capability of Cd resupply from solid phase to soil solution decreased with increasing additions of pig manure, as reflected by the decreases in the ratio (R) value of C to C. Positive correlations were observed between various bioavailable indicators of Cd in soils and Cd concentrations in the tissues of the two plants. These findings provide stronger evidence that pig manure amendment is effective in reducing Cd mobility and bioavailability in soils and it is an ideal organic material for remediation of Cd-contaminated soils.

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Section: Soil Solution Concentration Of CDsupporting

confidence: 60%

Section: Plant CD Uptakementioning

confidence: 99%

Evaluation of organic amendment on the effect of cadmium bioavailability in contaminated soils using the DGT technique and traditional methods

Yao

Sun

Wang

et al. 2015

Environ Sci Pollut Res

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“…Sphagnum peat is an expensive and nonrenewable resource. Some composts show physical and chemical characteristics which are similar to peat, making them suitable as peat substitutes (Abad et al, 2001;Farrell and Jones, 2010). Composts from crop residues or from the agro-food industry are moderately to highly saline (Fornes et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Nutrient‐rich compost versus nutrient‐poor vermicompost as growth media for ornamental‐plant production

Belda

Mendoza‐Hernández

Fornés

2013

Z. Pflanzenernähr. Bodenk.

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A comparative study on the suitability of one compost and two vermicomposts, obtained from the same batch of tomato-crop waste, as growth media for ornamental plant production was carried out. Each material was mixed with Sphagnum peat at 100 : 0, 75 : 25, 50 : 50, 25 : 75, and 0 : 100 (peat control) proportions by volume. Two ornamentals (Calendula officinalis, Viola cornuta) were sown and grown in the 13 substrates. Substrates were characterized physically and chemically. Seed germination, total leaf chlorophyll (SPAD units), plant growth, and plant nutrient concentrations were determined. The compost and the vermicomposts were markedly different from peat. Compost and the vermicomposts had greater bulk density and lower total porosity than peat. Compost had larger aeration and lower water-holding capacity than vermicomposts and peat. Compost and vermicomposts were alkaline (pH = 8.8 on average) whilst peat was acidic (pH = 5.9). Electrical conductivity was low in peat (0.23 dS m -1 ) and vermicomposts (0.65 dS m -1 ), and high in compost (2.85 dS m -1 ) due to the high concentrations of K + and SO 2À 4 . Mixing compost and vermicomposts with peat produced substrates with intermediate characteristics. Physical properties were within adequate range for all mixes except for the compost ones. pH was within adequate range only in pure peat, and salinity was extremely high in the compost mixes. Compost was phytotoxic, as shown by the strong reduction of seed germination, chlorophyll content, and plant growth of both ornamentals. Vermicomposts did not affect seed germination but reduced plant growth, though much less than compost. Mixing these materials with peat improved germination and growth. The diluted materials (compost at the 25 : 75 and vermicomposts at the 50 : 50 and 25 : 75 proportions) produced good-quality plants.

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“…NO 3 reagent is used in sewage systems [17]. Compost made from waste organic matter also contains NO 3 [19,20]. Therefore, if useless NO 3 in the market could be used at landfill sites, low cost and effective use of resources would be accomplished.…”

Section: Introductionmentioning

confidence: 99%

Suppressing Hydrogen Sulfide Generation by Nitrate or Oxygen Addition in Column Percolation Experiment

Kitazaki¹

2015

AJEP

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H 2 S generation suppression by the addition of NO 3 from reagent (NR) or compost (NC), and O 2 supply (OX) was quantitatively estimated in column percolation experiments. The cumulative amounts of oxygen added exceeded 300 mmol-O/L in NR and NC, and approximately 2 mmol-O/L in OX on day 75. The cumulative amounts of H 2 S generated on day 60 in control, NR, NC, and OX were 69, 26, 71, and 31 mmol-H 2 S/L, respectively. The amounts in NR and OX were half of that in control, whereas the amount in NC was almost the same as that in control. The H 2 S generation rates from day 50 to day 60 in control, NR, NC, and OX were 0.86, 0.019, 0.75, and 0.041 mmol-H 2 S/(L·d), respectively, and the rates in NR, NC, and OX were 0.02, 0.9, and 0.05 times that in control. In this way, the H 2 S generation suppression effects of NO 3 reagent addition were observed. In NR, although NO 3 was injected from the top of the column, the suppression effect reached the deep layer.

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Food waste composting: Its use as a peat replacement

Cited by 70 publications

References 17 publications

Evaluation of organic amendment on the effect of cadmium bioavailability in contaminated soils using the DGT technique and traditional methods

Evaluation of organic amendment on the effect of cadmium bioavailability in contaminated soils using the DGT technique and traditional methods

Nutrient‐rich compost versus nutrient‐poor vermicompost as growth media for ornamental‐plant production

Suppressing Hydrogen Sulfide Generation by Nitrate or Oxygen Addition in Column Percolation Experiment

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