Synthesis of Polyaniline / Biochar composite material and modeling with nonlinear model for removal of copper (II) heavy metal ions

Water is one of the most important compounds for existence nature and human life. Nowadays, as a result increasing industrialization industrial production, heavy metals pollute clean water resources. Copper (II) ions are leading in industry. There high proportion copper especially production printed electrical electronic circuit, paper silicon synthesis, wood preservation, fertilizer oil refining enterprises, paint pigment steel similar metal industry, motor vehicle aircraft industry wastes. When present trace amounts, they beneficial to health, while excessive amounts show poison effect cause acute diseases.