Lead and copper immobilization in a shooting range soil using soybean stover- and pine needle-derived biochars: Chemical, microbial and spectroscopic assessments

被引：165

作者：

Ahmad, Mahtab ^{[1
,2
,3
]}

Ok, Yong Sik ^{[1
,2
]}

Rajapaksha, Anushka Upamali ^{[1
,2
]}

Lim, Jung Eun ^{[1
,2
]}

Kim, Byung-Yong ^{[4
]}

Ahn, Jae-Hyung ^{[4
]}

Lee, Young Han ^{[5
]}

Al-Wabel, Mohammad I. ^{[3
]}

Lee, Sung-Eun ^{[6
]}

Lee, Sang Soo ^{[1
,2
]}

机构：

[1] Kangwon Natl Univ, Korea Biochar Res Ctr, Chunchon 200701, South Korea

[2] Kangwon Natl Univ, Dept Environm Biol, Chunchon 200701, South Korea

[3] King Saud Univ, Coll Food & Agr Sci, Dept Soil Sci, Riyadh 11451, Saudi Arabia

[4] Rural Dev Adm, Natl Acad Agr Sci, Agr Microbiol Div, Wonju 565851, South Korea

[5] Gyeongsangnam Do Agr Res & Extens Serv, Div Plant Environm Res, Jinju 660360, South Korea

[6] Kyungpook Natl Univ, Sch Appl Biosci, Taegu 702701, South Korea

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2016年 / 301卷

基金：

新加坡国家研究基金会;

关键词：

Biochar; Metal immobilization; Soil microbe; Pyrosequencing; EXAFS; PYROLYSIS TEMPERATURE; ENVIRONMENTAL CONTAMINATION; SEQUENTIAL EXTRACTION; CARBON SEQUESTRATION; AVAILABILITY; COMMUNITIES; MAIZE; AMENDMENTS; SPECIATION; RETENTION;

D O I：

10.1016/j.jhazmat.2015.08.029

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Biochar (BC) could be a potential candidate for the remediation of metal contaminated soil. Mechanistic understandings are needed for the appropriate selection of BC and investigating molecular microbial ecological interactions. The soybean stover-derived BCs were more effective in immobilizing Pb (88%) and Cu (87%) than the pine needle-derived BCs in a contaminated shooting range soil. The sequential chemical extractions indicated that BCs stimulated the geochemical transformation of metal species. Spectroscopic investigations using scanning electron microscopic elemental dot mapping and extended X-ray absorption fine structure spectroscopic measurements showed that Pb in the BCs amended soils was immobilized by the formation of stable chloropyromorphite. Soil organic C and microbial activity were also enhanced by BC. The non-labile C fraction in the soil amended with BCs produced at 700 C was increased. Biochars showed less impact on the bacterial community than feedstock biomass as promulgated by the pyrosequencing of 16S rRNA gene. The feedstock type (namely soybean stover and pine needles) was the main factor influencing the BCs efficacy on metals' (im) mobilization and bacterial health in soils. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：179 / 186

页数：8

共 52 条

[1] Biochar as a sorbent for contaminant management in soil and water: A review [J].