Coconut husk biochar amendment enhances nutrient retention by suppressing nitrification in agricultural soil following anaerobic digestate application

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

ไม่พบข้อมูลที่เกี่ยวข้อง

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Plaimart J., Acharya K., Mrozik W., Davenport R.J., Vinitnantharat S., Werner D.

ผู้เผยแพร่: Elsevier

ปีที่เผยแพร่ (ค.ศ.): 2021

วารสาร: Environmental Pollution (0269-7491)

Volume number: 268

นอก: 0269-7491

eISSN: 1873-6424

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091666624&doi=10.1016%2fj.envpol.2020.115684&partnerID=40&md5=6fb960ac7eaa8e470579698d48a16ed6

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

Anaerobic 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. These 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. © 2020 The Author(s)Capsule: Chemical and molecular microbiology measurements elucidated biochar and anaerobic digestate effects on nutrient retention and nitrification in soil, and groundwater pollution risks. © 2020 The Author(s)

คำสำคัญ

Anaerobic digestate, Nutrient pollution