Recycling of nutrients from organic waste by advanced compost technology- A case study

Wei, Yuquan; Wang, Ning; Lin, Yongfeng; Zhan, Yabin; Ding, Xiaoyan; Liu, Yongdi; Zhang, Ake; Ding, Guo-Chun; Xu, Ting; Li, Ji

doi:10.1016/j.biortech.2021.125411

Cited by 49 publications

(14 citation statements)

References 26 publications

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“…The sawdust was purchased from a lumber mill in Suzhou, particle size < 2 mm. The primary fermentation mature compost (1B) were the product of 10 days composting in a large-scale silo composting reactor in urban and rural organic waste treatment and utilization demonstration center in Linhu town, Suzhou city (Wei et al 2021). The secondary fermentation mature compost (2B) were the product of 20 days of static stacking composting of 1B.…”

Section: Preparation Of Raw Materialsmentioning

confidence: 99%

Effects of chemical additives and mature compost on reducing nitrogen loss during food waste composting

Xiong

Liu

Zhang

et al. 2023

Environ Sci Pollut Res

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This study aims to investigate the effect of adding different types of mature compost amendments and sulfur powder on nitrogen loss and compost maturity of food waste. High-throughput sequencing was used to analyze the bacterial community during composting. Results showed that the secondary fermentation mature compost mixed with sulfur powder group had the most reduction of ammonia emission (56.3%) and the primary fermentation mature compost amendments were the most effective for nitrous oxide emission reduction (36.9%). The temperature, pH well as the nitrogen forms transformation of the pile signi cantly affect the nitrogen loss during composting. Firmicutes helped to promote the rapid warming of the pile and Actinobacteria and Proteobacteria played an important role in decomposition of organic matter. Thermobi da and Ureibacillus had main contribution to the rapid degradation of organic matter in the process of composting. The relative abundance of nitrogen-xing bacteria were higher and the relative abundance of predominantly ammonifying and denitrifying bacteria were lower than control group, with different additives addition. Research HighlightsBoth mature compost amendments and sulfur powder signi cantly reduced nitrogen loss. The secondary fermentation mature compost mixed with sulfur powder group had the most reduction of ammonia emission (56.3%) and the primary fermentation mature compost amendments were the most effective for nitrous oxide emission reduction (36.9%). Firmicutes helped to promote the rapid warming of the pile and Actinobacteria and Proteobacteria played an important role in decomposition of organic matter. Thermobi da of Actinomycetes and Ureibacillus of Firmicutes had main contribution to the rapid degradation of organic matter in the process of composting. The relative abundance of nitrogen-xing bacteria were higher and the relative abundance of predominantly ammonifying and denitrifying bacteria were lower than control group, with different additives addition.

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Section: Preparation Of Raw Materialsmentioning

confidence: 99%

Effects of chemical additives and mature compost on reducing nitrogen loss during food waste composting

Xiong

Liu

Zhang

et al. 2023

Environ Sci Pollut Res

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“…The soil improvements produced using compost can enhance fertility, soil structure, water, and chemical conservation properties [28][29][30]. In this sense, for centuries, seaweed has been used as a fertilizer in coastal areas around the world [31].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Mixtures of Rugulopteryx okamurae Compost and Plant Residues to Determine the Most Effective Composition as a Substrate and Source of Nutrients

Correa-Bustos,

Berti,

Salas-Sanjuán

et al. 2024

Horticulturae

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The increasing invasion of Rugulopteryx okamurae algae along the coast of southeastern Spain has prompted efforts to explore its potential as a resource. Consequently, composting this alga is considered a viable solution for agricultural applications. This study investigates the composting process of mixtures of R. okamurae seaweed with plant residues and characterizes the final compost for its use as a substrate and/or source of nutrients to determine the most effective composition of the mixture. The composting process was conducted using varying proportions of seaweed (100%, 30–35%, and 15%) combined with plant residues (from vegetable plants, fruits, and gardens) and included both washed and unwashed seaweed. The first trials revealed challenges associated with Rugulopteryx okamurae, such as a low C/N ratio and algae washing. Consequently, a second trial was conducted to optimize the mixtures, aiming for a C/N ratio close to 30. Additionally, it was decided not to wash the algae to reduce the electrical conductivity (EC) in the mixtures. The findings indicate that the composting process remains unaffected by high electrical conductivity when algae are unwashed. However, washing the algae before composting did affect the compost quality, as the composts with washed algae with garden waste (SwP 34.0 dS m−1) had a lower electrical conductivity (EC) than did the unwashed composts with garden waste (SP 51.6 dS m−1 and SFP 64.9 dS m−1). On the other hand, the compost-only horticultural and garden waste (FHP 43.7 dS m−1) had a high EC; therefore, the EC was not increased with low proportions of unwashed algae, as was seen with the compost with 15% unwashed algae (SFHP 47.6 dS m−1). The other quality parameters were not affected by the absence of algae washing at the beginning of the composting process.

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“…Natural fermentation is a simple and important method for biological development (Hu et al 2021). Composting is a widely used method to manage organic wastes (including animals and plants) owing to its easy operation and low cost (Wei et al 2021). Among them, composting of whole plant or some of the tissues is mostly being used due to its clean and environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

Natural fermentation of plant tissues as environmental remediation materials to improve soil and enhance plant resistance to cadmium stress

Zhenggang,

Kangkang,

Yue

et al. 2023

Restoration Ecology

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Cadmium (Cd) pollution poses a serious threat to various ecosystems, and phytoremediation is an alternate method for developing the soil health. To better utilize phytoremediation for Cd‐contaminated soil remediation, the ginkgo leaves, pine needles, and Eucommia bark were mixed and naturally fermented to obtain Ginkgo biloba–Pinus massoniana–Eucommia ulmoides (GPE) Jiaosu and Jiaosu residue, whose effects on Broussonetia papyrifera planted in Cd‐contaminated soil were evaluated. The results showed that the contents of the protein, phenolic, vitamin E, and alcohol of GPE Jiaosu were 4400 ± 0.46, 0.22 ± 0.01, 0.88 ± 0.24, and 4.63 ± 0.25 μL/mL, accordingly, with fine antioxidant activity. The soil pH, electrical conductivity content, organic carbon, total nitrogen, total phosphorus, alkali‐hydrolyzable nitrogen, available phosphorus, and Cd concentration were all significantly (p < 0.05) modified. The chlorophyll content of B. papyrifera was increased by using Jiaosu residue in 12 hours, while the promotion effect of Jiaosu appeared in the later stage (60 days). The Cd tolerance physiological indexes such as malondialdehyde content and antioxidant enzymes' activity were all regulated. Applying the Jiaosu residue, the Cd in stems was decreased by 72.61% under 1000 mg/kg Cd treatment. These results suggested that GPE Jiaosu and Jiaosu residue can improve the properties of Cd‐contaminated soil, promote the Cd tolerance of B. papyrifera, and affect the Cd migration. The current study provides a new bioremediation method using the Jiaosu and Jiaosu residue as Cd environmental remediation materials in a recyclable pathway, which is a circular and healthy development concept that integrates economic, ecological, and social significance.

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Recycling of nutrients from organic waste by advanced compost technology- A case study

Cited by 49 publications

References 26 publications

Effects of chemical additives and mature compost on reducing nitrogen loss during food waste composting

Effects of chemical additives and mature compost on reducing nitrogen loss during food waste composting

Characterization of Mixtures of Rugulopteryx okamurae Compost and Plant Residues to Determine the Most Effective Composition as a Substrate and Source of Nutrients

Natural fermentation of plant tissues as environmental remediation materials to improve soil and enhance plant resistance to cadmium stress

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