Effects of ferrous sulfate modification on the fate of phosphorous in sewage sludge biochar and its releasing mechanisms in heavy metal contaminated soils

Aihemaiti, Aikelaimu1,2; Liang, Shuoyang3; Cai, Yingying3; Li, Rui3; Yan, Feng3,4; Zhang, Zuotai3,4

2023-09-01

10.1007/s11356-023-29867

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH   影响因子和分区

0944-1344

1614-7499

Modifications of sludge biochar with metal-based materials can enhance its fertilizing efficiency and improve safety. To elucidate the effects of ferrous sulfate modification on the fate of phosphorus in sludge biochar and its effect on phosphorus fractionation in soil, we investigated the changes in fractionation and bioavailability of phosphorus in modified sludge biochar and studied the changes in soil characteristics, microbial diversity and response, bioavailability, plant uptake of phosphorus, and heavy metals in contaminated soils after treatment with ferrous sulfate modified sludge biochar. The results demonstrated that ferrous sulfate modifications were conducive to the formation of moderately labile phosphorus in sludge biochar, and the concentrations increased by a factor of 2.7 compared to control. The application of ferrous sulfate-modified sludge biochar to alkaline heavy metal-contaminated soils enhanced the bioavailable, labile, and moderately labile phosphorus contents by a factor of 2.9, 3.0, and 1.6, respectively, whereas it obviously reduced the leachability and bioavailability of heavy metals in soils, exhibited great potentials in the fertilization and remediation of actual heavy metal-contaminated soils in mining areas. The biochar-induced reduction in soil pH, enhancement of organic matter, surface oxygen-containing functional groups, the abundance of Gammaproteobacteria, and its phosphonate degradation activity were primarily responsible for the solubilization of phosphorus from modified biochar in heavy metal-contaminated soils.

Ferrous sulfate modification Sludge biochar Phosphorous Fractionation Soil Alfalfa

SCI

英语

通讯

Environmental Sciences & Ecology

Environmental Sciences

WOS:001069227000004

SPRINGER HEIDELBERG

ENVIRONMENT/ECOLOGY

Web of Science

1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut C, Shenzhen 518055, Peoples R China
4.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China

Aihemaiti, Aikelaimu,Liang, Shuoyang,Cai, Yingying,et al. Effects of ferrous sulfate modification on the fate of phosphorous in sewage sludge biochar and its releasing mechanisms in heavy metal contaminated soils[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2023.

Aihemaiti, Aikelaimu,Liang, Shuoyang,Cai, Yingying,Li, Rui,Yan, Feng,&Zhang, Zuotai.(2023).Effects of ferrous sulfate modification on the fate of phosphorous in sewage sludge biochar and its releasing mechanisms in heavy metal contaminated soils.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH.

Aihemaiti, Aikelaimu,et al."Effects of ferrous sulfate modification on the fate of phosphorous in sewage sludge biochar and its releasing mechanisms in heavy metal contaminated soils".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2023).