Evaluation of humic substances during co-composting of food waste, sawdust and Chinese medicinal herbal residues

Zhou, Ying; Selvam, Ammaiyappan; Wong, Jonathan W C

doi:10.1016/j.biortech.2014.05.070

Cited by 285 publications

(79 citation statements)

References 23 publications

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“…The percentage reduction of total organic carbon in P 2 and P 3 was higher due to the availability of thermophilic bacteria which enhances the degradation rate of complex cellulose and protein. A similar result in the reduction of total organic carbon in organic waste was reported in the literature (Awasthi et al 2015;Zhou et al 2014). The reduction of the total organic carbon content indicates the mineralization of the organic matter and the maturity of the compost.…”

Section: Total Organic Carbon (Toc) Ash Content and Ammoniacal Nitrosupporting

confidence: 87%

“…Several studies have been reported for agitated pile composting of organic waste such as vegetable waste (Varma and Kalamdhad 2014a), water hyacinth (Singh and Kalamdhad 2015), municipal solid waste (Iyengar and Bhave 2006), chicken litter (Gao et al 2010), sewage sludge and pig faeces (Huang et al 2004), food waste and saw dust (Zhou et al 2014). However, there is limited literature available on the composting of flower waste with cow dung and saw dust as bulking agent.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of chemical and biological characterization during agitated pile composting of flower waste

Sharma

Varma

Yadav

et al. 2017

Int J Recycl Org Waste Agricult

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Purpose Flower waste dumping in landfills and other disposal sites is causing major environmental issues due to its highly biodegradable nature. Instead, flower waste can be successfully composted for its higher nutrient value. Therefore, this study evaluated the pile composting of flower waste with different combinations of cow dung and saw dust to produce stabilized compost. Methods Five agitated piles of flower waste mixture were formed in trapezoidal shape to perform the composting. Pile (P 0 ) was a control experiment, which contained 100 kg flower waste. The quantity of flower waste mixture with cow dung and saw dust in the other Piles was a total of 100 kg i.e. P 1 (50:40:10) kg, P 2 (60:30:10) kg, P 3 (70:20:10) kg and P 4 (80:10:10) kg, respectively. Results Temperature above 50°C was observed in all the piles except in P 0 . Physico-chemical characteristics of compost showed a stabilized compost obtained by proportionate mix of flower waste, cow dung and saw dust. Pile P 2 was observed with pH 7.23 and electrical conductivity 3.98 mS cm -1 , total organic carbon 30.9%, total nitrogen 2.31% and C:N ratio 14, thus a good proportion for compost amongst all the piles. Conclusions Appropriate proportion of waste mixture played an important role in providing favorable conditions for the microbial transformation of flower waste to stabilized compost. Temperature influenced the growth of microbes and maximum temperature was helpful in fast degradation of organic matter. Finally, flower waste with a combination of cow dung and saw dust was found to be successful during pile composting.

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Section: Total Organic Carbon (Toc) Ash Content and Ammoniacal Nitrosupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Evolution of chemical and biological characterization during agitated pile composting of flower waste

Sharma

Varma

Yadav

et al. 2017

Int J Recycl Org Waste Agricult

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“…Maximum increment in FAC and HAC was recorded in the fields planted with Swarnamahsuri after 3 years of study. This indicate stabilization of the soil and formation of persistent organic C in the form of humified organic carbon (fulvic acid carbon and humic acid carbon) (Zhou et al, 2014), which leads to more carbon sequestration potential of a soil. Similarly, DOH used to express the ratio of aromatic and aliphatic C content was higher in the plots grown with the variety Swarnamahsuri due to more stable carbon fractions such as FAC and HAC.…”

Section: Discussionmentioning

confidence: 99%

Changes in organic carbon pool in a tropical soil planted to rice in relation to photosynthetic carbon fixation

Bharali¹,

Baruah²,

Gogoi³

2016

Aust J Crop Sci

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Information on the fate of photosynthesized carbon (C) in plant soil system is essential for understanding the soil organic carbon pool and carbon dynamics in agricultural ecosystem. Our objectives in the present study were to quantify the photosynthetic carbon fixation by high yielding rice genotypes and contribution of rice ecosystem to soil organic carbon pool in a tropical rice soil. A field experiment was conducted during 3 consecutive monsoon rice season (July -December) of 2012, 2013 and 2014 in a randomized block design (RBD). A portable photosynthesis system was used for measurement of flag leaf photosynthesis. Stomatal frequency of the flag leaves were studied by scanning electron microscopy (SEM). Soil organic carbon storage was estimated by a total organic carbon (TOC) analyzer. Differences in flag leaf photosynthetic carbon fixation amongst the varieties were significant. Differential ability for carbon partitioning in terms of biomass accumulation were also noteworthy (p = 0.000). Flag leaf photosynthetic rate observed in the study showed a good correlation (r = 0.486, p ≤ 0.05) with the stomatal frequency of the flag leaves. The leaf stomatal frequency ranged from 605 to 783 mm -2 of leaf area with a high in the rice variety, Swarnamahsuri and low in Gitesh. There were significant differences in cumulative methane (CH 4 ) emission amongst the four rice varieties. The grain productivity in retaliation to genetic differences of the rice varieties highly favored their correlations with flag leaf photosynthesis (r = 0.999, p ≤ 0.01) and leaf area index (r = 0.961, p ≤ 0.01). Above ground and below ground dry matter of the plants were found to influence the quantity of soil organic carbon and soil C storage. Our results also clearly bespoke that a rice ecosystem can effectively sequester carbon (0.338 Mg C ha -1 yr -1 ) at 0 -15cm depth of soil. The results led us to conclude that lowland rice ecosystem is a good sink of carbon dioxide (CO 2 ).

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“…Composting is an environmentally friendly, biochemical and natural method which requires a minimum external energy source [6][7][8][9]. There are several factors affecting the maturation of composting, including feed mixtures C:N ratio, aeration, moisture content, temperature, pH, land requirement, etc.…”

Section: Introductionmentioning

confidence: 99%

Pilot Scale Use of Compost Combined with Sorbents to Phytostabilize Ni-Contaminated Soil Using Lolium perenne L.

Radziemska

Vaverková

Mazur

2017

Waste Biomass Valor

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Purpose An experiment was conducted to evaluate the potential use of a combination of food waste compost with sorbents as immobilizing agents to aid the phytostabilization of Ni-contaminated soil, using Lolium perenne L. (L. perenne). Methods The content of Ni in plants, i.e. total and extracted by 0.01 M CaCl 2 , was determined using the spectrophotometry method. Tests for the phytotoxicity of food waste compost were carried out using Phytotoxkit ™ tests. Results The compost phytotoxicity tests showed that the growth of the roots of L. perenne was slightly stimulated for a compost concentration of 25%, showing the positive impact of this material on plant growth. The biomass of L. perenne in particular organs, Ni content and the properties of soil depended on the dose of a Ni contaminant and the type of mineral and organic mixture incorporated into the soil. Conclusions Ni accumulated predominantly in the roots of the L. perenne. The greatest increase pH was observed after compost with chalcedonite mixture was added to the soil. The application of mineral and organic mixture, containing compost from food wastes and chalcedonite as a soil amendment, tended to reduce the soil total and mobile fraction of Ni more in comparison to the un-amended soil. Graphical AbstractKeywords Aided phytostabilization · Nickel contaminated soil · Food waste compost · Sorbents Statement of noveltyProblems concerning food waste management and disposal worldwide are currently among the most difficult and most topical issues in the organized waste management system. Apart from the least appropriate placing of food waste in landfills, the methods for disposal/recycling of food waste are the production of animal feed and composting. It is considered that the compost may be recycled for the removal of heavy metals from contaminated soils through the use of organic acids, microorganisms and nutrients found in composts. In this manuscript, we show that the mixture of compost from food waste and mineral sorbents (chalcedonite, halloysite), are a promising amendments for co-remediation methods of nickel contaminated soils. These novel soil amendments could be used for enhanced phytostabilization methods.

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Evaluation of humic substances during co-composting of food waste, sawdust and Chinese medicinal herbal residues

Cited by 285 publications

References 23 publications

Evolution of chemical and biological characterization during agitated pile composting of flower waste

Evolution of chemical and biological characterization during agitated pile composting of flower waste

Changes in organic carbon pool in a tropical soil planted to rice in relation to photosynthetic carbon fixation

Pilot Scale Use of Compost Combined with Sorbents to Phytostabilize Ni-Contaminated Soil Using Lolium perenne L.

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