2015•Energy Environmental ProtectionRequires access

RECOVERY OF CHROMIUM FROM TANNERY SLUDGE BY ACID LEACHING

X Zhang

Abstract

Leaching studies of tannery sludge were carried out in sulfuric acid media aiming to recover the maximum leaching yield of chromium. The effect of various factors(solid-liquid ratio, the concentration of acid, leaching time, temperature and stirring rate) was studied. The results indicate that the optimum solid-liquid ratio is 10g/L, the concentration of sulfuric acid is 0.5mol/L, the leaching temperature is 50℃, and the leaching time is 1.5h. The stirring rate affected rarely on leaching yield of chromium. After two times of leaching, the leaching yield of chromium had become 90.95%. Therefore, the application of sulfuric acid leaching to recover chromium is available.

About this research paper

What this paper is about

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Key concepts: Leaching (pedology), Sulfuric acid, Chromium, Chemistry, Lixiviant, Metallurgy, Materials science, Inorganic chemistry