chemical reduction methods

The main treatment methods of spent electroless nickel plating solution include chemical deposition, catalytic reduction, electrolysis, ionic exchange, etc.

化学镀镍废液的处理方法主要有化学沉淀法、催化还原法、电解法、离子交换法等。

Recently deep researches on new methods of sludge reduction are conducted, based on chemical oxidation and metabolic uncoupling.

最近，基于化学氧化和解偶联的污泥减量新方法得到更深入研究。

Four preparation methods for aromatic amine were reviewed in the paper: reduction of metals, catalytic hydrogenation reduction, hydration hydrazine reduction and electro-chemical reduction.

综述了还原芳香族硝基化合物制备芳胺的主要方法，包括催化加氢法、金属还原法、水合肼还原法、电化学还原法等。