Multidentate sulfur-containing ligands

A method of removing metal from water, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the water to be treated, where n=1-4 and X is selected from the group consisting of hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium;
• binding said metal to be removed from said water to said chelate ligand;
• and
• precipitating said chelate ligand bound to said metal from said water.

A method of removal of metal from water, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the water to be treated;
• binding said metal to be removed from said water to said chelate ligand;
• and
• precipitating said chelate ligand bound to said metal from said water.

A method of removal of metal from water, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the water to be treated;
• binding said metal to be removed from said water to said chelate ligand;
• and
• precipitating said chelate ligand bound to said metal from said water.

A method of acid mine drainage treatment, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the acid mine drainage to be treated, where n=1-4 and X is selected from the group consisting of hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium;
• binding a metal to be removed from said acid mine drainage to said chelate ligand;
• and
• precipitating said chelate ligand bound to said metal from said acid mine drainage.

A method of acid mine drainage treatment, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the acid mine drainage to be treated;
• binding a metal to be removed from said acid mine drainage to said chelate ligand;
• and
• precipitating said chelate ligand bound to said metal from said acid mine drainage.

A method of acid mine drainage treatment, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the acid mine drainage to be treated;
• binding a metal to be removed from said acid mine drainage to said chelate ligand;
• and
• precipitating said chelate ligand bound to said metal from said acid mine drainage.

A method of treatment of soil containing metal, comprising:

• adding an effective amount of soluble chelate ligand having a formula:
• to the soil to be treated, where n=1-4 and X is selected from the group consisting of hydrogen, lithium, sodium, potassium, rubidium, cesium, and francium;
• binding said metal in said soil to said chelate ligand;
• and
• disposing of said soil containing said metal bound to said chelate ligands.

A method of treatment of soil containing metal, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the soil to be treated;
• binding said metal in said soil to said chelate ligand;
• and
• disposing of said soil containing said metal bound to said chelate ligands.

A method of treatment of soil containing metal, comprising:

• adding an effective amount of a soluble chelate ligand having a formula:
• to the soil to be treated;
• binding said metal in said soil to said chelate ligand;
• and
• disposing of said soil containing said metal bound to said chelate ligands.