Effect of phosphate amendments on improving the fertilizer efficiency and reducing the mobility of heavy metals during sewage sludge composting.
Abstract Composting has been globally applied as an effective and cost-efficient process to manage and reuse sewage sludge. In the present study, four different phosphates as well as a mixture of ferrous sulfate and monopotassium phosphate were used in sewage sludge composting. The results showed th...
| Publicado en: | Journal of Environmental Management Vol. 235; pp. 124 - 133 |
|---|---|
| Autores principales: | , , , , , , |
| Formato: | Artículo |
| Publicado: |
Academic Press Inc.
Apr2019
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=134531653&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 134531653 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 03014797 EMJ jtl: Journal of Environmental Management issn: 03014797 maglogo: N pubinfo: dt: Apr2019 vid: 235 pid: 735 pub: Academic Press Inc. artinfo: ui: 134531653 10.1016/j.jenvman.2019.01.048 ppf: 124 ppct: 9 formats: tig: atl: Effect of phosphate amendments on improving the fertilizer efficiency and reducing the mobility of heavy metals during sewage sludge composting. aug: au: Wang, Xiankai Zheng, Guodi Chen, Tongbin Shi, Xiaoxiao Wang, Yuewei Nie, Erqi Liu, Junwan affil: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China su: Phosphates Fertilizers Heavy metals Sewage sludge Magnesium phosphate Potassium dihydrogen phosphate sug: subj: Nitrogenous Fertilizer Manufacturing Phosphatic Fertilizer Manufacturing Chemical fertilizer (except potash) manufacturing Fertilizer (Mixing Only) Manufacturing Soil Preparation, Planting, and Cultivating Agricultural chemical and other farm supplies merchant wholesalers Farm Supplies Merchant Wholesalers Phosphates Fertilizers Heavy metals Sewage sludge Magnesium phosphate Potassium dihydrogen phosphate keyword: Composting Ferrous sulfate Heavy metal Nutrient Phosphate Composting Ferrous sulfate Heavy metal Nutrient Phosphate ab: Abstract Composting has been globally applied as an effective and cost-efficient process to manage and reuse sewage sludge. In the present study, four different phosphates as well as a mixture of ferrous sulfate and monopotassium phosphate were used in sewage sludge composting. The results showed that these phosphate amendments promoted an increase in temperature and the degradation of organic matter as well as reduction on nitrogen loss during 18 days of composting. In addition, ferrous sulfate and phosphate had a synergistic effect on reducing nitrogen loss. The contents of total phosphorus and available phosphorus in the compost with addition of 1% phosphate were 40.9% and 66.1% higher than the compost with control treatment. Using the BCR (Community Bureau of Reference) sequential extraction procedure, the addition of calcium magnesium phosphate significantly reduced the mobility factor of Cd, Zn and Cu by 24.2%, 1.7% and 18.8%, respectively. The mobility factors of Pb were increased in all samples, but the monopotassium phosphate treated sample exhibited the greatest Pb passivation ability with the lowest mobility factor increase (1.8%) among all treatments. The X-ray diffraction patterns of compost samples indicated that the passivation mechanism of Cu and Zn may be the forming CuFeS 2 and ZnCu(P 2 O 7) crystals during sewage sludge composting. The germination index showed that the compost of all treatments was safe for agricultural application; the germination index of the calcium magnesium phosphate treatment was 99.9 ± 11.8%, which was the highest among all treatments. Graphical abstract Image 1 Highlights • Phosphate promoted temperature rise and organic matter degradation during composting. • Ferrous sulfate and phosphate had synergistic effect on reducing nitrogen loss. • Total P and available P content increased 40.9% and 66.1% by adding 1% phosphate. • Heavy metals were passivated with the addition of phosphate amendments. • All compost products in this study were safe for land application. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|