Impact of zeolite amendment on composting of food waste digestate

Manu, Minodora; Wang, Chen; Li, Dongyi; Varjani, Sunita; Wong, Jonathan W.C.

doi:10.1016/j.jclepro.2022.133408

Cited by 23 publications

(5 citation statements)

References 43 publications

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“…+ -N and difficult to compost due to higher NH 3 emissions (and loss of nitrogen from the resulting fertilizer). The study [148] used clinoptilolite as a physical additive for ammonia retention. The results showed that the addition of zeolite had a positive effect, since at dosages of additives of 5%-10%, nitrogen losses decreased by 34%-39%.…”

Section: Storage and Conversion Of Undesirable Gas Emissions Into The...mentioning

confidence: 99%

Ion Exchange in Natural Clinoptilolite: Aspects Related to Its Structure and Applications

2022

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Clinoptilolite is one of the most common, widespread and abundant zeolites in nature. Its availability, low cost, and outstanding ion exchange properties make clinoptilolite an excellent candidate for both direct use and various modifications to create new low-cost functional materials for sustainable development. Specific applications in which clinoptilolite is already being used include water treatment and heavy metal ion removal, agricultural purposes, storage and conversion of unwanted gaseous emissions into the atmosphere, production of catalysts and photocatalysts, bioactive materials, and a number of others. Unlike some other zeolites, clinoptilolite is difficult to synthesize, which is why most publications refer to this zeolite in its natural form, either directly from the deposit or after applying various processes to this mineral to improve its properties. Among the modification methods used, ion exchange stands out. This review is devoted to the study of ion exchange processes in natural clinoptilolite with two goals: first, as its strategic property for use in processes in which cation exchange is fundamentally necessary; second, as a way to modify it to create composite materials with predetermined desired properties.

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Section: Storage and Conversion Of Undesirable Gas Emissions Into The...mentioning

confidence: 99%

Ion Exchange in Natural Clinoptilolite: Aspects Related to Its Structure and Applications

2022

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“…Previous studies have demonstrated that a 1-30% zeolite dosage during composting of various organic wastes, including winery wastes, enabled higher retention of nutrients, stimulation of enzymatic activity, and humification of organic matter to control composting (100% wastes) [13,14]. In addition, in zeolite-based composts a decrease in electrical conductivity and an increase in germination index were observed, thus indicating the improvement in the agronomic quality of the compost [15,16].…”

Section: Introductionmentioning

confidence: 96%

Zeolite and Winery Waste as Innovative By-Product for Vineyard Soil Management

Doni,

Masciandaro,

Macci

et al. 2024

Environments

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In semiarid environments, vine cultivation is a land use with a high impact with regard to soil erosion, loss of organic matter and biodiversity, contamination, and compaction. In addition, the wine supply chain produces a considerable quantity of organic waste, which remains as residues in the ecosystem. Within this context, we developed a sustainable vine management system to improve the efficient use of fertilisers by applying a by-product derived from the composting of winery wastes and zeolite. We evaluated the effects of the zeolite-based compost on the chemical, physical, and biochemical soil properties of a productive vineyard. Four treatments were set up and monitored for about two years. These were as follows: (1) Commercial compost (COM); (2) Zeolite (Z); (3) 30% zeolite and 70% winery waste compost (30 ZEO); (4) 10% zeolite and 90% winery waste compost (10 ZEO). The results demonstrated that the ZEO treatments could be considered a win–win solution able to improve soil water content, nutrient retention, carbon sequestration, and biochemical activity while also recycling wastes. In particular, 10 ZEO seems to be the amendment that best combines an improvement in soil biochemical properties with gradual and constant nutrient availability, thus satisfying, without exceeding, soil and plant needs.

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“…The quality and efficiency of composting were often improved by adding various additives. At present, there are three main types of compost additives: (1) physical additives: materials with physical adsorption properties such as zeolite and biochar are used to reduce nitrogen loss in compost (Liao et al 2021 ; Manu et al 2022 ); (2) biological additives: these mainly consist of the addition of exogenous microorganisms to improve composting efficiency and maturity (Jiang et al 2015 ); and (3) chemical additives: mainly through the addition of chemical reagents to change the internal properties of compost to achieve excellent composting effect, such as magnesium chloride and ferrous sulfate (Li et al 2020c ). Ca(H 2 PO 4 ) 2 and MgSO 4 as chemical additives have stable effects and low cost compared to physical and biological additives.…”

Section: Introductionmentioning

confidence: 99%

Ca(H2PO4)2 and MgSO4 activated nitrogen-related bacteria and genes in thermophilic stage of compost

Jiang,

Dai,

Wang

et al. 2024

Appl Microbiol Biotechnol

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This study was conducted to investigate the effects of Ca(H2PO4)2 and MgSO4 on the bacterial community and nitrogen metabolism genes in the aerobic composting of pig manure. The experimental treatments were set up as control (C), 1% Ca(H2PO4)2 + 2% MgSO4 (CaPM1), and 1.5% Ca(H2PO4)2 + 3% MgSO4 (CaPM2), which were used at the end of composting for potting trials. The results showed that Ca(H2PO4)2 and MgSO4 played an excellent role in retaining nitrogen and increasing the alkali-hydrolyzed nitrogen (AN), available phosphorus (AP), and available potassium (AK) contents of the composts. Adding Ca(H2PO4)2 and MgSO4 changed the microbial community structure of the compost. The microorganisms associated with nitrogen retention were activated. The complexity of the microbial network was enhanced. Genetic prediction analysis showed that the addition of Ca(H2PO4)2 and MgSO4 reduced the accumulation of nitroso-nitrogen and the process of denitrification. At the same time, despite the reduction of genes related to nitrogen fixation, the conversion of ammonia to nitrogenous organic compounds was promoted and the stability of nitrogen was increased. Mantel test analysis showed that Ca(H2PO4)2 and MgSO4 can affect nitrogen transformation-related bacteria and thus indirectly affect nitrogen metabolism genes by influencing the temperature, pH, and organic matter (OM) of the compost and also directly affected nitrogen metabolism genes through PO43− and Mg2+. The pot experiment showed that composting with 1.5% Ca(H2PO4)2 + 3% MgSO4 produced the compost product that improved the growth yield and nutrient content of cilantro and increased the fertility of the soil. In conclusion, Ca(H2PO4)2 and MgSO4 reduces the loss of nitrogen from compost, activates nitrogen-related bacteria and genes in the thermophilic phase of composting, and improves the fertilizer efficiency of compost products. Key points • Ca(H2PO4)2 and MgSO4 reduced the nitrogen loss and improved the compost effect • Activated nitrogen-related bacteria and altered nitrogen metabolism genes • Improved the yield and quality of cilantro and fertility of soil

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Impact of zeolite amendment on composting of food waste digestate

Cited by 23 publications

References 43 publications

Ion Exchange in Natural Clinoptilolite: Aspects Related to Its Structure and Applications

Ion Exchange in Natural Clinoptilolite: Aspects Related to Its Structure and Applications

Zeolite and Winery Waste as Innovative By-Product for Vineyard Soil Management

Ca(H2PO4)2 and MgSO4 activated nitrogen-related bacteria and genes in thermophilic stage of compost

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