Lead sulfate nano- and microparticles in the acid plant blow-down generated at the sulfuric acid plant of the El Teniente mine, Chile

2014 ◽  
Vol 16 (12) ◽  
pp. 2734-2741 ◽  
Author(s):  
Giancarlo M. Barassi ◽  
Martin Klimsa ◽  
Thomas Borrmann ◽  
Mathew J. Cairns ◽  
Joachim Kinkel ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Copper Smelter ◽  
Weak Acid ◽  
Lead Sulfate ◽  
Acid Plant ◽  
Blow Down ◽  
Lead Sulphate ◽  
Environmental Threat ◽  
Sulfuric Acid Plant ◽  
Acid Waste

Suspended solids in weak acid waste from a copper smelter have been identified to be anglesite, lead sulphate, nano- and microparticles. The particles bypass filters and could pose a serious environmental threat.

scholarly journals Vanadium removal from spent sulfuric acid plant catalyst using citric acid and Acidithiobacillus thiooxidans

2020 ◽  
Vol 20 (4) ◽  
Author(s):  
Bartosz Mikoda ◽  
Anna Potysz ◽  
Harry Kucha ◽  
Ewa Kmiecik
Keyword(s):  
Particle Size ◽  
Sulfuric Acid ◽  
Citric Acid ◽  
Acid Leaching ◽  
Copper Smelter ◽  
Pulp Density ◽  
Acidithiobacillus Thiooxidans ◽  
Acid Plant ◽  
Spent Catalyst ◽  
Sulfuric Acid Plant

Abstract Spent catalysts being considered hazardous wastes exhibit a high metal content in mobile forms. In addition, growing demand for circular economy policy applications requires proper utilization of these wastes. This study aimed at the assessment of vanadium leaching from spent desulfurization catalyst derived from sulfuric acid plant dump located nearby a copper smelter. Chemical and phase composition of the catalyst has been characterized. The extraction has been performed using chemical (0.1-M and 1-M citric acid) and biological (biotic solution with Acidithiobacillus thiooxidans) methods, using different experimental parameters (pulp density, particle size, leaching time) to observe V leaching behavior and kinetics. The results revealed that both citric acid and bacteria carried out the extraction process well. The optimal parameters for acid leaching were < 0.2-mm particle size and 2% pulp density, which allowed to leach out 95% of V from spent catalyst within 48 h. The bacterially mediated extraction resulted in 93% V leached out within 21 days with 2% pulp density. The experiments showed that V present in the catalyst is susceptible to bioleaching and organic acid leaching with the latter being a quicker process.

scholarly journals Design and Performance Analysis of a Cooling Tower in Sulfuric Acid Plant

2010 ◽  
Author(s):  
BA Chowdhury ◽  
MS Islam ◽  
F Begum ◽  
AM Parvez
Keyword(s):  
Sulfuric Acid ◽  
Performance Analysis ◽  
Chemical Engineering ◽  
Cooling Tower ◽  
Acid Plant ◽  
Sulfuric Acid Plant ◽  
And Performance

Journal of Chemical Engineering Vol.ChE 23 1995-2005

The Characteristic and Mechanism of Lead Pollution in Soil Profiles from a Sulphuric Acid Slag Pile Sit in Guangdong,China

2011 ◽  
Vol 474-476 ◽  
pp. 172-177 ◽  
Author(s):  
Jing Yong Liu ◽  
Xun An Ning
Keyword(s):  
Organic Matter ◽  
Surface Layer ◽  
Sulfuric Acid ◽  
Guangdong Province ◽  
Soil Samples ◽  
Soil Profiles ◽  
Lead Pollution ◽  
Acid Plant ◽  
Sulfuric Acid Plant ◽  
Main Factors

The soil samples in a profile were collected around the pyrite slag pile site near a sulfuric acid plant in Guangdong province and the contents of lead were investigated detail. At the same time, the mechanism of lead pollution was principium analyzed. The research found that the lead pollutants were mainly concentrated in soils surface layer about 0-10cm and shown characteristics of contents rapidly decreasing along the uprights. the main factors that affected the transference of lead from the slag to the soil were the filtering by acid rain and itself acidification of the slag. Iron oxide colloid and organic matter may have been responsible for the lead retention in soil.<b></b>

Assessing potential of nanofiltration for sulfuric acid plant effluent reclamation: Operational and economic aspects

2019 ◽  
Vol 222 ◽  
pp. 369-380 ◽  
Author(s):  
Beatriz Gasparini Reis ◽  
Ana Lívia B. Araújo ◽  
Camila C. Vieira ◽  
Miriam Cristina Santos Amaral ◽  
Helen Conceição Ferraz
Keyword(s):  
Sulfuric Acid ◽  
Economic Aspects ◽  
Acid Plant ◽  
Sulfuric Acid Plant

Dynamic modeling and process optimization of an industrial sulfuric acid plant

2010 ◽  
Vol 158 (2) ◽  
pp. 241-249 ◽  
Author(s):  
Anton A. Kiss ◽  
Costin S. Bildea ◽  
Johan Grievink
Keyword(s):  
Sulfuric Acid ◽  
Process Optimization ◽  
Dynamic Modeling ◽  
Acid Plant ◽  
Sulfuric Acid Plant
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