1. Deep Sea Tailing Placement (DSTP) is a method used by Ramu NiCo Management (MCC) Limited at its Basamuk Nickel-Cobalt Refinery in Madang Province, Papua New Guinea, to discharge tailings into great depths in the ocean.

Question

1. Deep Sea Tailing Placement (DSTP) is a method used by Ramu NiCo Management (MCC) Limited at its Basamuk Nickel-Cobalt Refinery in Madang Province, Papua New Guinea, to discharge tailings into great depths in the ocean.

2. The aim of the study was to assess the concentration of metals (Ni, Co, Cr6+, Mn, Zn, Cu, Se, Pb, Ag, Hg, Cd, and As), acidity, and flow velocity rate of the tailing effluents prior to discharge to determine the safety of the waste on the local marine ecosystem.

3. The metals were analyzed using Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS), except for Hg, which was analyzed by Flow Injection Mercury Systems (FTMS), and Cr6+ by Discreet Analyzer.

4. The pH and flow velocity rate were measured using a pH meter and special software installed monitoring computers, respectively.

5. The results showed that the monthly average pH was 8.32 units, which falls within the safe limits range of 6.9-9.0 units, and the monthly average flow velocity rate was 1677 m3/h, which is within the recommended range of 1225-2075 m3/h.

6. The concentrations of all metals were below the recommended values, indicating that the chemistry of the tailing effluent is acceptable for release into the environment.

7. Further studies are required to ascertain the long-term effects of DSTP on the marine ecosystem of the implicated site.
Put all the above information in only one paragraph

Answer 1

Deep Sea Tailing Placement (DSTP) is utilized by Ramu NiCo Management (MCC) Limited at its Basamuk Nickel-Cobalt Refinery in Papua New Guinea to discharge tailings into the ocean depths. A study was conducted to evaluate the metal concentrations (Ni, Co, Cr6+, Mn, Zn, Cu, Se, Pb, Ag, Hg, Cd, As), acidity, and flow velocity rate of the tailings effluents before discharge to ensure the safety of the waste on the local marine ecosystem. Metal analysis was done using Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS) except for Hg and Cr6+, which were analyzed by different systems. pH and flow velocity were measured using specific instruments and software. The findings revealed that the pH levels were within safe limits at 8.32 units, while the flow velocity rate was within recommended parameters at 1677 m3/h. Metal concentrations were below recommended levels, indicating the tailing effluent chemistry is suitable for release into the environment. Further research is needed to understand the long-term impacts of DSTP on the marine ecosystem in the area.