Bacterial leaching of heavy metals from sewage sludge for agricultural application

1992 ◽  
Vol 63 (1-2) ◽  
pp. 67-80 ◽  
Author(s):  
Denis Couillard ◽  
Shucai Zhu
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Bacterial Leaching ◽  
Agricultural Application

Alternative energy substrates for bacterial leaching of heavy metals from sewage sludge

1992 ◽  
Vol 19 (2) ◽  
pp. 359-360 ◽  
Author(s):  
Denis Couillard ◽  
Shucai Zhu
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Key Words ◽  
Alternative Energy ◽  
Thiobacillus Ferrooxidans ◽  
Bacterial Leaching ◽  
Energy Substrates ◽  
Energy Substrate ◽  
Batch System

Bacterial leaching of heavy metals from sewage sludge with different iron containing compounds as energy substrates was studied in a batch system using a culture of Thiobacillus ferrooxidans. It was proven that spent FeSO4∙7H2O and pyrite met the criteria of an energy substrate and could be substituted for reagent grade FeSO4∙7H2O. This substitution could significantly reduce energy substrate cost: 99% with spent FeSO4∙7H2O and 94% with pyrite. The solid aspect of pyrite compromises its use. Key words: energy substrate, bioleaching, heavy metals, solubilization, Thiobacillus ferrooxidans, sewage sludge.

Bacterial leaching of heavy metals from sewage sludge—Bioreactors comparison

1990 ◽  
Vol 66 (3) ◽  
pp. 237-252 ◽  
Author(s):  
D. Couillard ◽  
G. Mercier
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Bacterial Leaching

Bacterial Leaching of Heavy Metals From Anaerobically Digested Sewage Sludge

1983 ◽  
Vol 18 (1) ◽  
pp. 151-162 ◽  
Author(s):  
L. Wong ◽  
J.G. Henry
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Agricultural Land ◽  
Metal Removal ◽  
Health Hazard ◽  
Dry Weight ◽  
Low Grade ◽  
Bacterial Leaching ◽  
Beneficial Reuse ◽  
Digested Sewage Sludge

Abstract Spreading of sewage sludges on agricultural land is an attractive sludge management option because it combines beneficial reuse and disposal at the same time. However, it is important to reduce the metal content in the sludge in order to minimize the health hazard associated with metal uptake by plants and its subsequent accumulation in the food chain. Treatment of sludge with acid for metal removal is not practical because a large amount of acid is required. Typically 0.5 to 0.8 g of H2SO4/g dry weight of sludge will be required to achieve over 70% removal of cadmium (Cd), zinc (Zn) and nickel (Ni). Lead (Pb) and copper (Cu) are not significantly removed. A biological process called bacterial leaching, which has been used commercially for extracting copper and uranium from low grade ores, was reviewed and its potential for removing heavy metals from anaerobically digested sewage sludge was investigated. Leaching experiments were conducted and the results showed that about 80 to 90% removal of cadmium, zinc and nickel, and 60 to 70% removal of copper were possible. The acid requirement was significantly reduced because only 0.15 g of H2SO4/g dry weight of sludge was needed.

Effect of Solids Concentration on Bacterial Leaching of Heavy Metals from Sewage Sludge

2002 ◽  
Vol 52 (2) ◽  
pp. 237-243 ◽  
Author(s):  
Kyung-Suk Cho ◽  
Hee Wook Ryu ◽  
In Sook Lee ◽  
Hyung-Min Choi
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Bacterial Leaching ◽  
Solids Concentration

Predicted Solution Phase Forms of Heavy Metals in Sewage Sludge‐Treated Soils

1982 ◽  
Vol 11 (2) ◽  
pp. 182-186 ◽  
Author(s):  
W. E. Emmerich ◽  
L. J. Lund ◽  
A. L. Page ◽  
A. C. Chang
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Solution Phase

Study on co-hydrothermal treatment combined with pyrolysis of rice straw/sewage sludge: Biochar properties and heavy metals behavior

2021 ◽  
Vol 155 ◽  
pp. 105074
Author(s):  
Sirui Tong ◽  
Shuping Zhang ◽  
Haoxin Yin ◽  
Jiaxing Wang ◽  
Minzi Chen
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Hydrothermal Treatment ◽  
Rice Straw

Influence of rice husk addition on phosphorus fractions and heavy metals risk of biochar derived from sewage sludge

Chemosphere ◽  
2021 ◽  
Vol 280 ◽  
pp. 130566
Author(s):  
Qiao Xiong ◽  
Xiang Wu ◽  
Hang Lv ◽  
Shuhua Liu ◽  
Haobo Hou ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Rice Husk ◽  
Phosphorus Fractions

Characteristic of heavy metals in biochar derived from sewage sludge

2015 ◽  
Vol 18 (4) ◽  
pp. 725-733 ◽  
Author(s):  
Tao Lu ◽  
Haoran Yuan ◽  
Yazhuo Wang ◽  
Hongyu Huang ◽  
Yong Chen
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge
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