Effect of Heavy Metals on Activities of Soil Microorganism

Inobeme, Abel

doi:10.1007/978-981-15-7459-7_6

Cited by 3 publications

(1 citation statement)

References 96 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of biogenic sulfide precipitation using Sulphate Reducing bacteria are found to be noteworthy for removal of heavy metals even in low concentrations using low cost in anaerobic conditions of microbial growth (Kumar et al, 2021). Regardless of all the benefits of microbial mediated heavy metal recovery, the fact that excess heavy metals beyond a critical level could also be toxic to microbes (Inobeme, 2021) and thus the effectiveness of microbial candidates in heavy metal removal will be realistic only if the treating effluent has a treatable limit of heavy metal. In such cases, cleaner technologies involving a combinatorial approach of phytomining methods along with microbes will be a wise strategy for heavy metal removal (Alves et al, 2021).…”

Section: )mentioning

confidence: 99%

Cleaner technologies to combat heavy metal toxicity

Rebello

Sivaprasad

Anoopkumar

et al. 2021

Journal of Environmental Management

View full text Add to dashboard Cite

Section: )mentioning

confidence: 99%

Cleaner technologies to combat heavy metal toxicity

Rebello

Sivaprasad

Anoopkumar

et al. 2021

Journal of Environmental Management

View full text Add to dashboard Cite

Biochar from sewage sludge: Effect of pyrolysis on functional properties and pollutants fate

Barbosa,

Santos,

Silva

et al. 2024

Environmental Quality Mgmt

View full text Add to dashboard Cite

Pyrolysis is a promising alternative for the removal or immobilization of hazardous elements in sewage sludge (SS) without compromising its biofertilizer features. However, the effects of pyrolysis on SS emerging contaminants have not been fully investigated. Therefore, this study aimed to assess the fate of heavy metals, pesticides, and organic pollutants in SS through pyrolysis, as well as the suitability of SS and its derived biochar (SSB) for soil application. Municipal SS was pyrolyzed at different scales (bench and micro units) and temperatures (400, 500, and 600°C) for comparison. The general properties, surface morphology, and functional groups of SS and SSB were analyzed. Also, a quantitative analysis of heavy metals (Zn, Cu, Cr, Ni, Cd, and Pb) and a qualitative investigation of organic pollutants and pesticides were performed. The results demonstrated that pyrolysis at 400°C increased the stability of SS and strongly affected its surface area, resulting in a high pore structure with a developed surface charge. Simultaneously, the relative content of organic matter and nutrients remained nearly unchanged. All heavy metals analyzed in SS and SSB400 were within limits set by the International Biochar Initiative for soil application. Moreover, organic pollutants and pesticides were detected in the SS but were partially degraded or immobilized after pyrolysis > 400°C. In conclusion, the production of SSB proved to be an effective method for removing toxic elements from SS while enhancing its properties for soil remediation and crop productivity.

show abstract