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Kayıt Tarihi: 2021-13-Ocak
Aktif Durum: Pasif
Gönderilenler: 30
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| Gönderen: 2021-16-Ocak Saat 05:31 | Kayıtlı IP
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Coconut
huskcoconut
husk activated carbon biochar amendment enhances
nutrient retention by suppressing nitrification in
agricultural soil following anaerobic digestate
applicationAnaerobic digestate and biochar are by-
products of the biogasification and pyrolysis of
agricultural wastes. This study tested the hypothesis
that combined application of anaerobic pig/cattle manure
digestate and coconut husk (CH) biochar can improve soil
nutrient conditions, whilst minimizing atmospheric and
groundwater pollution risks. Microcosms simulated
digestate application to agricultural soil with and
without CH biochar. Ammonia volatilization and nutrient
leaching were quantified after simulated heavy rainfalls.
Archaeal and bacterial community and abundance changes in
soils were quantified via next generation sequencing and
qPCR of 16S rRNA genes. Nitrifying bacteria were
additionally quantified by qPCR of functional genes. It
was found that CH biochar retarded nitrate leaching via
slower nitrification in digestate-amended soil. CH
biochar reduced both nitrifying archaea and bacteria
abundance in soil by 71-83 percent in the top 4 cm soil
layer and 66-80 percent in the deeper soil layer one
month after the digestate application. Methanotroph
abundances were similarly reduced in the CH biochar
amended soils. pellets.com/">coconut shell activated carbon
pelletsThese findings demonstrate combined benefits
of anaerobic digestate and CH biochar application which
are relevant for the development of a more circular rural
economy with waste minimization, renewable energy
production, nutrient recycling and reduced water
pollution from agricultural land.
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Konu: Coconut husk biochar amendment enhances
