Extracting heavy metals from electroplating sludge by acid and bioelectrical leaching using Acidithiobacillus ferrooxidans

2020 ◽  
Vol 191 ◽  
pp. 105225 ◽  
Author(s):  
Ping Wu ◽  
Li-juan Zhang ◽  
Chao-ba Lin ◽  
Xin-xin Xie ◽  
Xiao-yu Yong ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Acidithiobacillus Ferrooxidans ◽  
Electroplating Sludge

Stability of Ceramic Glazes Obtained by Valorification of Anorganic Pigments Extracted from Electroplating Sludge

2018 ◽  
Vol 69 (3) ◽  
pp. 571-574
Author(s):  
Mihaela Andreea Mitiu ◽  
Maria Iuliana Marcus ◽  
Maria Vlad ◽  
Cristina Mihaela Balaceanu
Keyword(s):  
Heavy Metals ◽  
Leaching Tests ◽  
Ceramic Tiles ◽  
Research Activity ◽  
Limit Values ◽  
Leaching Potential ◽  
International Standard ◽  
Ceramic Samples ◽  
Electroplating Sludge ◽  
The Stability

This paper presents the results of the research activity in order to etablish the stability and leaching potential of ceramic tiles which have been developed using glazes colored with pigments obtained by the extraction of chromium and iron metals from electroplating sludge. All these ceramic tiles contain various amounts of heavy metals in their glazes due to the pigments composition. The ceramic samples have been subjected to leaching tests in order to detect if various elements of relevance such as chromium, lead, cadmium, zinc or iron migrated to any great extent into test solutions. Leaching tests have been performed following the international standard SR ISO 10545-15 method for specific metals leaching into 4% acetic acid solutions at 220C after a 24h period and the international standard SR EN 12457/1-4 method with distilled water as leaching agent at LSR of 10 l/kg, for 24h period. Amounts of heavy metals have been negligible or non-detectable (iron) in the leaching solutions, being well below the limit values established by the legislation in force.

scholarly journals Synergy betweenRhizobium phaseoliandAcidithiobacillus ferrooxidansin the Bioleaching Process of Copper

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Xuecheng Zheng ◽  
Dongwei Li
Keyword(s):  
Heavy Metals ◽  
Organic Acids ◽  
Acidithiobacillus Ferrooxidans ◽  
Cell Number ◽  
Leaching Rate ◽  
Rhizobium Phaseoli ◽  
Initial Cell ◽  
Number Ratio ◽  
Copper Leaching

This study investigates the synergy ofRhizobium phaseoliandAcidithiobacillus ferrooxidansin the bioleaching process of copper. The results showed that additionalR. phaseolicould increase leaching rate and cell number ofA. ferrooxidans. When the initial cell number ratio betweenA. ferrooxidansandR. phaseoliwas 2 : 1,A. ferrooxidansattained the highest final cell number of approximately 2 × 108 cells/mL and the highest copper leaching rate of 29%, which is 7% higher than that in the group withA. ferrooxidansonly.R. phaseolimay use metabolized polysaccharides fromA. ferrooxidans, and organic acids could chelate or precipitate harmful heavy metals to reduce their damage onA. ferrooxidansand promote its growth. Organic acids could also damage the mineral lattice to increase the leaching effect.

Marble wastes as amendments to stabilize heavy metals in Zn-Electroplating sludge

2017 ◽  
Vol 6 (1) ◽  
pp. 15-23
Author(s):  
Khalifa Riahi ◽  
Safa Chaabane ◽  
Bechir Ben Thayer
Keyword(s):  
Heavy Metals ◽  
Electroplating Sludge

Immobilization of heavy metals in electroplating sludge by biochar and iron sulfide

2016 ◽  
Vol 23 (14) ◽  
pp. 14472-14488 ◽  
Author(s):  
Honghong Lyu ◽  
Yanyan Gong ◽  
Jingcshun Tang ◽  
Yao Huang ◽  
Qilin Wang
Keyword(s):  
Heavy Metals ◽  
Iron Sulfide ◽  
Electroplating Sludge

Speciation Analysis of Heavy Metals in Electroplating Sludge and the Effect of Composting

2011 ◽  
Vol 396-398 ◽  
pp. 1975-1979
Author(s):  
Jin Long Yan ◽  
Gui Xiang Quan ◽  
Cheng Ding
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
High Temperature ◽  
Speciation Analysis ◽  
The Other ◽  
Forced Ventilation ◽  
Sludge Compost ◽  
Metal Contents ◽  
Electroplating Sludge ◽  
Agricultural Use

Electroplating sludge is always listed as hazardous waste due to the high content of heavy metals. The most economical and available way for disposal of sludge is soil application of sludge compost, and the major limitation in agriculture utilization is the total heavy metal contents and their bioavailability to the soil–plant system. The effect of composting on the speciation of heavy metals in an electroplating sludge was studied, and the potential environmental impacts were also assessed. The electroplating sludge was composted with rice straw and sawdust by static aerobic method at high temperature with forced ventilation. Results showed that the exchangeable species of copper and nickel were significantly decreased after the compost procedure, and the other kinds of species were increased differently. Data in this research indicated that composting can reduce the activity of heavy metals to some extent to achieve the agricultural use.

The influence of heavy metals on the polymorphs of dicalcium silicate in the belite-rich clinkers produced from electroplating sludge

2009 ◽  
Vol 170 (1) ◽  
pp. 443-448 ◽  
Author(s):  
Ying-Liang Chen ◽  
Pai-Haung Shih ◽  
Li-Choung Chiang ◽  
Yi-Kuo Chang ◽  
Hsing-Cheng Lu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Dicalcium Silicate ◽  
Electroplating Sludge
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