Production Related Waste Management for Selected Chemical
lchemid=N982
Waste Management Comparison - 2019
Pollution Prevention Activities for Selected Chemical
| Reporting Year | Section 8.10: Newly Implemented Source Reduction Activity | Section 8.10: Methods to Identify Activity | Section 8.11: Optional Pollution Prevention Information* |
|---|---|---|---|
| 2022 |
Source Reduction:: S22: Instituted recirculation within a process[-0-4%]
|
Methods to Identify SR Opportunities: T04: Participative team management
Barriers: B7-Barriers to P2 B7 - No known substitutes or alternative technologies. |
Barriers to P2: B7 - No known substitutes or alternative technologies. - Zinc oxide has a strong melting aid effect on ceramics, reduces the expansion coefficient, improves thermal stability, increases luster and whiteness and improves elasticity. |
| 2021 |
Source Reduction:: S05: Modified content, grade, or purity of a chemical input[-50-99%]
|
Methods to Identify SR Opportunities: T10: Vendor assistance
|
S05: New supplier |
| 2020 |
Barriers: B8-Barriers to P2 B8 - A reduction does not appear to be technically feasible
|
Barriers to P2: B8 - A reduction does not appear to be technically feasible - Zinc is used to reduce the melting temperature of glass frits; which reduces the energy and equipment requirements while improving the brilliance of color glazes. |
|
| 2016 |
Barriers: B7-Barriers to P2 B7 - No known substitutes or alternative technologies.
|
Barriers to P2: B7 - No known substitutes or alternative technologies. - The relatively high heat capacity, thermal conductivity and high temperature stability of ZnO coupled with a comparatively low coef?cient of expansion are desirable properties in the production of ceramics. ZnO affects the melting point and optical properties of the glazes, enamels, and ceramic formulations. Zinc oxide as a low expansion, secondary flux improves the elasticity of glazes by reducing the change in viscosity as a function of temperature and helps prevent crazing and shivering. Zinc (in small amounts) improves the development of glossy and brilliant surfaces. |
TRI Pollution Prevention Glossary
The Waste Management Hierarchy |
The waste management hierarchy established by the Pollution Prevention Act (PPA) guides waste generators toward the best options for managing wastes.
The preferred option is to prevent pollution at its source, but for waste that is generated, the preferred management methods are recycling, followed
by burning for energy recovery, treatment and, as a last resort, disposing of the waste.
|
- A breakdown of production-related waste managed. This includes all amounts of the chemical released directly to the environment or otherwise managed as waste, other than waste generated by one-time events not associated with normal production processes (e.g., fires or remedial actions).
- A production ratio or activity index to provide context for reported toxic chemical quantities. For example, if a chemical is used in the manufacture of refrigerators, the production index would track the number of refrigerators produced and could be used to help gauge how much of the chemical is being released per unit of production.
- Any newly implemented source reduction activities, reported using "W-codes" (e.g., "W41: Increased purity of raw materials")