Variation of heavy metal speciation, antibiotic degradation, and potential horizontal gene transfer during pig manure composting under different chlortetracycline concentration

2020 ◽  
Vol 28 (1) ◽  
pp. 1224-1234
Author(s):  
Yao Wang ◽  
Zhiqiang Chen ◽  
Qinxue Wen ◽  
Ye Ji
Keyword(s):  
Heavy Metal ◽  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Metal Speciation ◽  
Pig Manure ◽  
Heavy Metal Speciation ◽  
Antibiotic Degradation

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

Heavy Metal Speciation, Microbial Study and Physicochemical Properties of Some Groundwaters: A Case Study

2019 ◽  
Vol 3 (1) ◽  
pp. 211-226 ◽  
Author(s):  
Abolanle Saheed Adekunle ◽  
John Adekunle O. Oyekunle ◽  
Oluwaseyi Samson Ojo ◽  
Oladotun Wasiu Makinde ◽  
Thabo T. I. Nkambule ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Physicochemical Properties ◽  
Metal Speciation ◽  
Heavy Metal Speciation ◽  
Microbial Study
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