Reducing nitrogen loss and salinity during ‘struvite’ food waste composting by zeolite amendment

Chan, Man Ting; Selvam, Ammaiyappan; Wong, Jonathan W C

doi:10.1016/j.biortech.2015.10.093

Cited by 372 publications

(106 citation statements)

References 24 publications

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“…It could be inferred that the MCDOA inoculum enhanced the degradation rate of low molecular weight organic acids primarily by improving the diversities of acetic and propionic acid degrading bacteria, whereas the mechanism of avoiding a disruption of the increase in pile temperature in the AC group may be that the alkaline amendment was effective at providing a good environment for microbial degradation of organic acids, just as exhibited in the study of Chan et al . (2016). …”

Section: Resultsmentioning

confidence: 99%

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Song

Zhang

Xia

et al. 2018

Microbial Biotechnology

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SummaryIn order to overcome the excessive acidification problem, a microbial consortium for the degradation of organic acids (MCDOA), which acts synergistically in degrading organic acids, was developed and used as an inoculum to improve the efficiency of food waste composting. MCDOA could eliminate the initial lag phase of the pile temperature rise because of excessive acidification and effectively shorten the composting period. Fluorescence regional integration analysis of the excitation‐emission matrix spectra of dissolved organic matter showed that compared with raw material, in compost with MCDOA inoculation, the percent fluorescence response (P i,n) values of Regions I, II and IV decreased by 95.11%, 94.19% and 87.41%, respectively, and P i,n of Region V increased by 172.57%. The decreased and increased levels were markedly higher than in the two control groups (MgO and K2 HPO 4 treatment, and uninoculated compost). These findings revealed that MCDOA accelerated the degradation of proteinaceous compounds and the formation of complicated humic‐like materials. Bacterial profiles implied that MCDOA could improve the indigenous bacterial community structure and diversities of acetic and propionic acid‐degrading and lignin‐degrading bacteria, which might account for the high composting efficiency and degree of humification of the inoculated compost.

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Section: Resultsmentioning

confidence: 99%

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Song

Zhang

Xia

et al. 2018

Microbial Biotechnology

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“…However, nitrogen loss in the form of ammonia is a significant problem. Its loss reduces compost product quality and results in malodorous environments (Chan et al, 2016). Mineral substances such as zeolite and red mud, which contain a large amounts of Mg, have been showed to have a positive effect on the conservation of nitrogen in composts, because N and P in compost materials can form a stable compound like struvite (NH 4 Mg(H 2 O) 6 [PO 4 ]) with Mg provided (Chan et al, 2016;Zhao et al, EEMJ accepted).…”

Section: Introductionmentioning

confidence: 99%

Effect of red mud addition on tetracycline and copper resistance genes and microbial community during the full scale swine manure composting

Wang

Zhang

Sui

et al. 2016

Bioresource Technology

115

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h i g h l i g h t sARGs could be effectively removed through the thermophilic composting process. The main contributor of reducing ARGs abundance was pile temperature. Bacterial community was the main driver to reduction of ARGs abundance. Swine manure has been considered as the reservoir of antibiotic resistance genes (ARGs). Composting is one of the most suitable technologies for treating livestock manures, and red mud was proved to have a positive effect on nitrogen conservation during composting. This study investigated the abundance of eight tetracycline and three copper resistance genes, the bacterial community during the full scale swine manure composting with or without addition of red mud. The results showed that ARGs in swine manure could be effectively removed through composting (reduced by 2.4 log copies/g TS), especially during the thermophilic phase (reduced by 1.5 log copies/g TS), which the main contributor might be temperature. Additionally, evolution of bacterial community could also have a great influence on ARGs. Although addition of red mud could enhance nitrogen conservation, it obviously hindered removal of ARGs (reduced by 1.7 log copies/g TS) and affected shaping of bacterial community during composting.

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“…Temperature is one of the most representative parameters of the composting process [11]. changing depending on the rate and degree of organic matter mineralization as well as the intensity of microbiological processes [12].…”

Section: Resultsmentioning

confidence: 99%

Biomass of Fish By-Products as a Component of Compost for Agricultural Use

2016

5th International Conference on Biological, Chemical and Environmental Sciences (BCES-2016) March 24-25, 2016 London (United Ki

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Reducing nitrogen loss and salinity during ‘struvite’ food waste composting by zeolite amendment

Cited by 372 publications

References 24 publications

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Effect of inoculation with a microbial consortium that degrades organic acids on the composting efficiency of food waste

Effect of red mud addition on tetracycline and copper resistance genes and microbial community during the full scale swine manure composting

Biomass of Fish By-Products as a Component of Compost for Agricultural Use

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