Evaluation of three composting systems for the management of spent coffee grounds

Liu, K.; Price, G.W.

doi:10.1016/j.biortech.2011.05.073

Cited by 101 publications

(54 citation statements)

References 24 publications

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“…Compost derived from slaughter waste/slurry/sawdust mix with FGD gypsum and biochar supplementation, had a higher EC (p < 0.05) ( Table 5). The high EC value of treatment FG, FB, FG-I, and FB-I might be attributable to the nature of FGD gypsum, which initially has high EC [64], and the high EC from amendments applied to soils might induce phytotoxic effects in plants. However, the EC of all the compost produced still could be considered as acceptable for nursery production, the limit of which is about 3000 µS/cm, as suggested by Careces et al [63].…”

Section: The Effects On Macro- Micronutrients and Maturity Indicesmentioning

confidence: 99%

The Effect of Co-Additives (Biochar and FGD Gypsum) on Ammonia Volatilization during the Composting of Livestock Waste

2018

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The effectiveness of co-additives for improving livestock waste composting (reduction of air pollution and conservation of nutrients) was investigated. Biochar and Flue gas desulphurization gypsum (FGD gypsum) were used to supplement the composting of a mixture of slaughter waste, swine slurry, and sawdust. Different compositions of additives (0% or 5% each, 10% biochar or FGD gypsum) were tested in triplicate on the laboratory scale. In addition, the effects of two different aeration schemes (continuous and intermittent) were also investigated. Ammonia volatilization, physicochemical characteristics, and compost maturity indices were investigated. The results indicated that the use of the co-additive (Biochar and FGD gypsum) during composting of livestock waste led to a reduction of ammonia volatilization by 26-59% and to a 6.7-7.9-fold increase of nitrate accumulation. The total ammonia volatilization of intermittent aeration treatment was lower than that of continuous aeration using co-additives treatment. It was concluded that co-additives (biochar and FGD gypsum) might be utilized in livestock waste composting to reduce ammonia volatilization and improve nutrient conservation.Sustainability 2018, 10, 795 2 of 18 both the aeration rate and the ratio of bulking agent to waste during composting [8,9]. Among the potential odor compounds, ammonia (NH 3 ) is a major component that causes odors nuisance and toxicity to humans and plants [10]. Nitrogen losses that occurred during composting resulted in the emission of ammonia (NH 3 ) gas (ammonia volatilization) accounted for 24-33% of the initial N in household waste [11], 46.8-77.4% of the initial N of a mixture of straw and manure [12], 62% of the initial N was during composting of poultry layer manure [13], and 24-64% of the nitrogen was in organic waste [14]. The volatilization of ammonia deteriorating both human health and the environment would reduce the fertilizer value of the organic waste. Barrington et al. [15] reported that carbon availability, bulking agent, particle size, moisture content, and aeration regime are the factors that determine whether composting results in N volatilization as odor or N immobilization into organic components. The odor emission rate was correlated with both the aeration rate and the ratio of bulking agent to waste when composting [8].The utilization of chemical and biological additives to mitigate ammonia volatilization and nitrogen loss during the composting process has been extensively studied. These additives have included wood fly ash, lime, phosphor-gypsum, polyethylene glycol, jaggery [16], zeolite [17], bentonite [18], superphosphate [19], and microbial inoculants [20]. Among these additives, biochar was popular to be amended in the composting mixture. Biochar is a carbon rich material produced by the thermal decomposition of biomass, was effective for reducing volatilization of ammonia during the composting of a mixture of sewage sludge and wood chips [21]. The faster decomposition process in the bio-oxidative phase...

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Section: The Effects On Macro- Micronutrients and Maturity Indicesmentioning

confidence: 99%

The Effect of Co-Additives (Biochar and FGD Gypsum) on Ammonia Volatilization during the Composting of Livestock Waste

2018

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“…The C/N ratio of all composting types varies with time. However, in general the C/N ratio of all composting types was observed to decline with time, which indicates in Fig 2. Previous studies [16,17,18,19] also reported a decrement of C/N values with time.…”

Section: C/n Ratiomentioning

confidence: 70%

Evaluation of Potency Spent Coffee Grounds for Make Black Compost

et al. 2020

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The aim for this research is to make black compost from spent coffee grounds (SCG). The content of hemicellulose and lignin from SCG were 37.28% and 22.45%. For mineral content, Potassium (3 g/kg) is the most abundant element in spent coffee ground, followed by calcium (1.23 g/kg), magnesium (1.11 g/kg), phosphorus (0.89 g/kg) and natrium (0.7 g/kg). SCG also contains Carbon and Nitrogen ratios 1:19.5 which approaches the C / N ratio of the soil 1: 20. Composting process in aerobic condition for 2 months using Fungi, Bacillus and Lactic Acid Bacteria activator, produce black compost with good characteristic for plant and soil, such as C/N ratio under 1:10 and pH around 6 to 9.

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“…The same observation was found by Nishanth and Biwas (2008) [45] in a study on the effect of adding rock phosphate to treated compost. Liu and Price (2011) [36] also observed an increase in macro-and micro-nutrient concentrations in the final compost compared to the raw materials.…”

Section: Influence Of Sub-materials On Radiocesium Levels and Chemicamentioning

confidence: 79%

“…Our results regarding EC followed those reported by Li et al (2012) [35], who composted pig manure using bentonite. Liu and Price (2011) [36] also reported an increase in EC by 107% in compost derived from spent coffee ground compared to the raw material. As described by Larney et al (2008) [10], the EC of WC is 10-times lower than that of straw EC.…”

Section: Influence Of Sub-materials On Radiocesium Levels and Chemicamentioning

confidence: 96%

Nutrient Status in Composts and Changes in Radioactive Cesium Following the Fukushima Daiichi Nuclear Power Plant Accident

et al. 2016

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Abstract:Following the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, the forests in the Fukushima area were highly contaminated with radiocesium ( 137 Cs and 134 Cs). Therefore, there is a need to develop strategies for remediation of the contaminated forests. We assessed changes in radioactive cesium ( 134 Cs and 137 Cs) contamination and nutrient status in composts derived from wood chip, bamboo leaf and bamboo powder using rice bran and wheat meal as sub-materials. Changes in soil properties and Komatsuna (Brassica rapa var. perviridis) growth were also investigated due the application of composts and initial materials at 0, 2.5, 5 and 10 kg·m −2 input levels. Mixing of sub-materials significantly reduced the concentration of radioactive Cs and improved compost quality. The effectiveness of three composts on soil quality improvement varied depending on their types and rates of applications. Amendments of bamboo leaf composts at 10 kg·m −2 resulted in the significantly highest soil inorganic N, available P and exchangeable K contents. Amendments of final composts also enhanced Komatsuna growth. Furthermore, radioactive Cs contaminations of the Komatsuna plants grown in these composts were below 0.1 Bq·kg −1 . This study may help to remediate the forests contaminated with radiocesium in the Fukushima area while improving the soil organic matter content to enhance soil sustainability.

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Evaluation of three composting systems for the management of spent coffee grounds

Cited by 101 publications

References 24 publications

The Effect of Co-Additives (Biochar and FGD Gypsum) on Ammonia Volatilization during the Composting of Livestock Waste

The Effect of Co-Additives (Biochar and FGD Gypsum) on Ammonia Volatilization during the Composting of Livestock Waste

Evaluation of Potency Spent Coffee Grounds for Make Black Compost

Nutrient Status in Composts and Changes in Radioactive Cesium Following the Fukushima Daiichi Nuclear Power Plant Accident

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