"用硫酸处理" can be translated as "treat with sulfuric acid" or "process with sulfuric acid" in English, depending on the specific context and intended meaning.
"Treat with sulfuric acid" emphasizes the action of applying sulfuric acid for a particular purpose, such as in a chemical reaction or to modify a substance's properties.
"Process with sulfuric acid" suggests a more systematic or industrial application of sulfuric acid in a manufacturing or treatment process.