Soil Enzyme Activities in Waste Biochar Amended Multi-Metal Contaminated Soil; Effect of Different Pyrolysis Temperatures and Application Rates

Meththika Vithanage, Tharanga Bandara, Mohammad I. Al-Wabel, Adel Abduljabbar, Adel R.A. Usman, Mahtab Ahmad, Yong Sik Ok

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Woody biochars derived by pyrolyzing Gliricidia sepium at 300°C and 500°C and a waste byproduct of same biomass from a bioenergy industry (BC700) were tested for their effect on soil enzymes activities and available form of heavy metals in multi-metals contaminated soil. Pot experiments were conducted during 6 weeks with tomato (Lycopersicon esculentum L.) at biochar application rates, 1, 2.5, and 5% (w/w). A reduction in polyphenol oxidase with biochars produced at increasing pyrolysis temperature compared to the control whereas the maximum activity of dehydrogenase and catalase was observed in 1% BC500 and 2.5% BC300, respectively. Soil available form of Ni, Mn, and Cr were reduced by 55, 70% and 80% in 5% BC700 amended soil, respectively. The highest geometric mean of enzyme activities was observed in 2.5% BC300 treatment. Overall the application of high dosages of high temperature derived biochar masks/deteriorates soil enzyme activities but immobilizes bioavailable heavy metals and reduces toxicity.

Original languageEnglish
Pages (from-to)635-643
Number of pages9
JournalCommunications in Soil Science and Plant Analysis
Volume49
Issue number5
DOIs
Publication statusPublished - 2018 Mar 9

Fingerprint

biochar
soil enzymes
pyrolysis
polluted soils
application rate
enzyme activity
metals
metal
heavy metals
bioenergy industry
Gliricidia sepium
temperature
soil
heavy metal
catechol oxidase
Solanum lycopersicum var. lycopersicum
byproducts
catalase
bioenergy
tomatoes

Keywords

  • Catalase
  • phytotoxicity
  • polyphenol oxidase
  • soil amendment

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science

Cite this

Soil Enzyme Activities in Waste Biochar Amended Multi-Metal Contaminated Soil; Effect of Different Pyrolysis Temperatures and Application Rates. / Vithanage, Meththika; Bandara, Tharanga; Al-Wabel, Mohammad I.; Abduljabbar, Adel; Usman, Adel R.A.; Ahmad, Mahtab; Ok, Yong Sik.

In: Communications in Soil Science and Plant Analysis, Vol. 49, No. 5, 09.03.2018, p. 635-643.

Research output: Contribution to journalArticle

Vithanage, Meththika ; Bandara, Tharanga ; Al-Wabel, Mohammad I. ; Abduljabbar, Adel ; Usman, Adel R.A. ; Ahmad, Mahtab ; Ok, Yong Sik. / Soil Enzyme Activities in Waste Biochar Amended Multi-Metal Contaminated Soil; Effect of Different Pyrolysis Temperatures and Application Rates. In: Communications in Soil Science and Plant Analysis. 2018 ; Vol. 49, No. 5. pp. 635-643.
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