Kanwartej Singh Sra

Title: Kanwartej Singh Sra: Environmental Remediation Innovations

Introduction

Kanwartej Singh Sra is an inventor based in San Ramon, California, whose work focuses on methods for treating contaminated subsurface environments and porous materials. He is associated with Chevron U.S.A. Inc. and holds 2 patents.

Latest Patents

Sra’s patent, “Methods and System for Delivering Amendments to Subsurface,” describes delivering amendments such as sulfate below the ground surface. The method advances a borehole above the water table, fills it at least partially with a mixture of gypsum and granular media, and irrigates the borehole so dissolved gypsum can spread into a targeted treatment zone. The irrigation may use gravity-fed trickle flow, and the treatment zone may contain hydrocarbons.

His patent, “Systems and Methods for Thermal Destruction of Undesired Substances by Smoldering Combustion,” addresses the treatment of porous media containing unwanted substances, including perfluoroalkylated substances (PFAS). The process mixes the media with solid fuel and heats the mixture to initiate smoldering combustion. An oxidizer gas is then forced through the mixture to sustain combustion until it reaches a temperature capable of destroying the PFAS. The described system includes a mixer, an ignition system, and a gas blower, and may use fuels such as wood chips, wax, sawdust, tire scraps, or granular activated carbon.

Career Highlights

Sra’s disclosed inventions apply engineering approaches to environmental remediation. One focuses on distributing a treatment amendment through subsurface soil, while the other uses self-sustaining smoldering combustion to destroy persistent contaminants in porous materials.

Collaborations

Sra’s work is associated with Chevron U.S.A. Inc. His listed coworkers include Ravindra Vasant Kolhatkar and David Glynn Thomas.

Conclusion

Kanwartej Singh Sra’s patent work combines subsurface amendment delivery with thermal treatment of persistent contaminants, reflecting a focus on practical environmental remediation technologies.