Effects of Co‐composting of Municipal Solid Waste and Pigeon Pea Biochar on Heavy Metal Mobility in Soil and Translocation to Leafy Vegetable Spinach

2021 ◽  
Author(s):  
Vassanda Coumar Mounissamy ◽  
Raghbendra Singh Parihar ◽  
Anil Kumar Dwivedi ◽  
Jayanta Kumar Saha ◽  
Selladurai Rajendiran ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Pigeon Pea ◽  
Leafy Vegetable ◽  
Metal Mobility ◽  
Heavy Metal Mobility

Chromium speciation in municipal solid waste: effects of clay amendment and composting

1998 ◽  
Vol 38 (2) ◽  
pp. 17-23 ◽  
Author(s):  
Ho Goen ◽  
Qiao Liang
Keyword(s):  
Organic Matter ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Red Mud ◽  
Metal Speciation ◽  
Metal Mobility ◽  
Potential Hazard ◽  
Composting Process ◽  
Heavy Metal Mobility ◽  
Free Metal

The addition of clay in the form of bauxite refining residue (red mud) prior to composting has been suggested as a way to control heavy metal mobility in compost. Leachability and plant availability of metals in a mixture of grass clippings and sawdust spiked with metal solution was markedly reduced during the composting process. The fate of metals in municipal solid waste compost applied to land was examined by using a sequential step extraction to investigate metal speciation (into exchangeable and bound to carbonate forms, to Mn & Fe oxides, to organic matter and in residue phase) in red mud amended compost. The effects of red mud and the composting process on metal speciation in the compost for Cd, Cr, Cu, Ni, Pb and Zn were investigated, and a comparison of some effects with biosolids compost was made. Addition of red mud reduced the metal mobility and the potential hazard of releasing metals from compost through promoted precipitation, adsorption and complexation of free metal cations to red mud. Red mud however, was not able to desorb metals bound to organic matter. Since most of the metals in the municipal solid waste were not usually bound to organic matter, the addition of red mud prior to composting fixed the free metal ions before they bound to this fraction. Results for Cr speciation are reported in this paper.

Assessment of heavy metal contamination from municipal solid waste open dumping sites in Bangladesh

2017 ◽  
Vol 19 (3) ◽  
pp. 191 ◽  
Author(s):  
Md. Rezaul Karim ◽  
Megumi Kuraoka ◽  
Takaya Higuchi ◽  
Masahiko Sekine ◽  
Tsuyoshi Imai
Keyword(s):  
Heavy Metal ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Open Dumping
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