Process Chemist

Greenscape Eco Management Pvt. Ltd.; Alwar; On-site; INR 650,000 - 1,000,000; Full time

Job summary

Greenshope Eco Management Pvt. Ltd. in India seeks a PMR Supervisor in Production to guide aqua regia formulation, selective precipitation, and metal recovery processes.

You will ensure safe handling of acids, maintain batch records, and support quality control at the lab and refinery interfaces. With B.Sc/B.Tech/B.E and hands-on experience in chemical processing, you will optimize digestion conditions, supervise filtration, and uphold safety and environmental standards across production

Qualifications

• Must hold a Graduate degree (B.Sc/B.Tech/B.E) with relevant chemical processing exposure.
• Experience in aqua regia formulation and precious metal recovery is preferred.
• Knowledge of safe handling of acids and hazardous waste.
• Experience with lab documentation and batch records.
• Strong communication and safety compliance awareness.

Responsibilities

• Develop and optimize aqua regia formulations for metal recovery.
• Perform selective precipitation to recover gold and copper.
• Monitor pH, temperature, and redox conditions during digestion.
• Operate filtration and washing steps for metal sponges.
• Conduct basic assay tests and coordinate with the assay lab.
• Maintain chemical inventory and ensure stock levels.
• Ensure safety and environmental compliance.

Skills

Aqua Regia formulation

Selective precipitation

pH & temperature control

Filtration & washing

Assaying & testing

Titration skills

Copper electro-refining

Copper anode slime treatment

Induction furnace operation

Chemical inventory management

Education

B.Sc / B.Tech / B.E

Tools

EDXRF

Spark spectrometry

ICP-OES

Vacuum filtration systems

Buchner filtration

Microsoft Excel

Job description

Department: Production, PMR Supervisor

Industry: E-Waste Recycling, Metal Recovery & Refining

Experience: 37 years

Qualification: Graduate (B.Sc)/B.Tech/B.E

About Greenscape:

Greenscape Eco Management is a pioneering Indian urban-mining company, founded in 2007, that transforms end-of-life electronics and electrical goods into valuable secondary materials. Rather than viewing disposed TVs, refrigerators, washing machines, air conditioners and other electronic waste as mere refuse, Greenscape treats them as urban mines: sources of precious and base metals such as gold, copper, aluminium and rare earths.

Through advanced recovery processes and a robust circular-economy framework, Greenscape has recycled tens of thousands of metric tons of electronic waste and extracted over 40 different metals and minerals.

By doing so, the company reduces environmental footprints, curbs demand on virgin raw- material mining, and contributes to sustainable resource management, aligning with broader climate, resource-conservation and social goals.

Job Description -

Skill Sets:

1.Aqua Regia Formulation: Mastery in safely mixing, handling, and adjusting molar ratios of concentrated Nitric Acid (HNO3) and Hydrochloric Acid (HCl) to create the aqua regia solution.

2.Selective Precipitation: Good understanding of chemical precipitating agents (e.g., Sodium Metabisulfite [SMB] or Sulphur Dioxide for gold; Copper or Sodium Chloride for silver) to selectively drop precious metals out of solution.

3.pH & Temperature Control: Precision in monitoring and controlling exothermic reactions, solution temperatures, and pH levels during digestion and precipitation phases, should be well versed in the usage of pH meters, redox meters and density meters (baume hydrometer).

4.Filtration & Washing: Proficiency in operating vacuum filtration systems, Buchner funnels, decantation setups to isolate and wash precious metal sponges to high purity.

5.Assaying & Testing: Ability to perform basic chemical diagnostic tests (such as the Stannous Chloride test) as well as basic understanding of advanced methods such as Fire Assaying, EDXRF, Spark Spectrometry and ICP-OES to verify the complete precipitation of precious metals from the barren acid solution and to co-ordinate with the Assay lab activities.

6.Titration Skills: Ability to perform titration for the determination of Copper, free acid & Chloride concentrations in the running electrolyte and communicating the corrective makeup requirements to the refinery team.

7.Preferred Skills: Hands on experience with copper electro-refining, Copper Anode Slime treatment & Induction furnace operation.

8.Chemical inventory management: Managing the inventory of lab-grade chemicals, consumables, and reagents, ensuring minimum stock levels are maintained for uninterrupted operations.

Safety & Environmental Compliance

• Hazardous Chemical Handling: Advanced knowledge of HAZMAT protocols, chemical compatibility, and safe storage/handling of highly corrosive acids and toxic chemical agents.
• Acid Fume Management: Experience operating and maintaining wet gas scrubbers and fume hoods to safely neutralize highly toxic nitrogen dioxide (NO2) and chlorine (Cl2) gases generated during digestion.
• Neutralization & Waste Treatment: Skill in safely neutralizing highly acidic toxic waste streams (using chemical bases like Sodium Hydroxide or Lime) to meet environmental discharge regulations.
• House Keeping : Skill in maintaining workplace order, cleanliness and hygiene (maintenance of 5S)

Operational & Quality Control

• Batch Record Keeping: Meticulous documentation of acid volumes, raw PCB input weights, chemical reaction times, and final metal yields (mass balance calculations).
• Basic Understanding of Microsoft Excel
• Good Communication Skills