Devy Kartika Ratnasari

As part of my Six Sigma Green Belt certification, I led a data-driven project focused on improving the process capability (Cpk/Ppk) of a critical manufacturing parameter — product thickness — using the DMAIC methodology.

Project Highlights:
Identified a gap between current process capability and target performance.
Conducted Measurement System Analysis (MSA) to validate data reliability.
Implemented changes to equipment settings and control systems to reduce… Visa mer

As part of my Six Sigma Green Belt certification, I led a data-driven project focused on improving the process capability (Cpk/Ppk) of a critical manufacturing parameter — product thickness — using the DMAIC methodology.

Project Highlights:
Identified a gap between current process capability and target performance.
Conducted Measurement System Analysis (MSA) to validate data reliability.
Implemented changes to equipment settings and control systems to reduce variability.
Introduced automated adjustments to minimize human error and improve consistency.

Result:
Projected a significant improvement in yield and a measurable reduction in material waste, contributing to cost savings and quality enhancement.

This project reinforced the value of structured problem-solving and continuous improvement in manufacturing processes. Visa mindre

Developing a robust process to convert waste to carbon for battery and supercapacitor. The feedstocks evaluated are mill tailings from mining, wastewater treatment plant residual from pulp and paper industries, as well as wood waste from packaging and furniture industries.
Evaluating the performance of carbon electrode from waste.
Identifying the market for the activated carbon resulted from the process as well as benchmarking the carbon products.

Arrange planning work package to roll-out the agreed work breakdown structures and working methods.
Provide support to project manager on all issues related to project schedule.
Define, build, and maintain the project time management plan with respect to project management plant.
Responsible for selecting, preparing, and characterizing the catalysts for the production of high-quality bio-fuels.
Designed and implemented a novel catalyst system, known as two-staged catalyst beds… Visa mer

Arrange planning work package to roll-out the agreed work breakdown structures and working methods.
Provide support to project manager on all issues related to project schedule.
Define, build, and maintain the project time management plan with respect to project management plant.
Responsible for selecting, preparing, and characterizing the catalysts for the production of high-quality bio-fuels.
Designed and implemented a novel catalyst system, known as two-staged catalyst beds, which resulted in 77% increase of favorable compounds in bio-fuels.
Visa mindre

This project is initiated under a ‘Female Leaders for Change’ program, held by Women in Science, an open platform for scientific discussion.
Identified the ongoing challenges in medical facilities and resulted in the lack access of electricity.
Reported and presented the preliminary study in a mini conference for potential stakeholders.
Participated in meetings and workshops with partners on major impacting issues for developing a potential solution.

Developed a Life Cycle Assessment (LCA) for gasoline production from municipal solid waste with Waste Reduction Model (WARM), an open platform, by US EPA.
Provided the global warming emissions from different scenarios of waste managements.
Created the techno economic analysis for a potential waste management.

Analyzed the potential of biomass-based fuels to power the steel industry, prepared the key presentations and recommendations for the implementation of the technology.
Created project plans and led meetings for the pre-preliminary study.
Demonstrated work processes of the technology within work group as needed.

Analyzed complex scenarios of waste plastic management and used creative problem-solving to turn the challenges into profitable opportunities.
Organized and monitored the projects for adherence to schedule and for achieving milestones.
Provided a system to enable the production of fuel oil with high gasoline range hydrocarbons reaching 97.72% with aromatic content of 95.85% from waste plastics.

Identified the waste plastic disposal techniques to prevent the build up of toxic waste and pollution in Sri Lanka.
Investigated the environmental, economic, and cultural factors affecting the target community in Sri Lanka in order to facilitate targeted market research and project development.
Designed the waste recycling method, which is fitted to the target community’s ability and fulfilled the market’s demand.
Prepared the recycling campaigns, monitored the community’s… Visa mer

Identified the waste plastic disposal techniques to prevent the build up of toxic waste and pollution in Sri Lanka.
Investigated the environmental, economic, and cultural factors affecting the target community in Sri Lanka in order to facilitate targeted market research and project development.
Designed the waste recycling method, which is fitted to the target community’s ability and fulfilled the market’s demand.
Prepared the recycling campaigns, monitored the community’s participation, as well as optimized the recycling methods to ensure the economic upgrading of waste plastic bags. Visa mindre

This project was funded by Indonesian Higher Education Authority.
Identified scenarios utilizing modification in recovery of creamer industrial waste.
Planned and executed the work package of determining the recovery methods for creamer industrial waste.
Managed and ensured the project budget.
Presented detailed reports to the Higher Education Authority alongside my supervisor.

Identified the data quality of sampling and analyzing the waste water from para-xylene refinery as well as worked to ensure the data for reporting and analysis was valid.
Implemented standard operating procedures and workflows for reporting the analysis of waste water.
Created a risk assessment primer and resolved varied problems regarding waste water within established policies and procedures.

Designed the project ideas and goals alongside with supervisor and turned the vision into work packages.
Developed and implemented the conversion methods of nicotine into nicotinic acid.
Delivered the final product of provitamin B as a potential downstream industry for tobacco.

Identified the trends of ecological parameters in semi-natural lake caused by fertilizer utilization in the upper stream of the lake.
Analyzed the cause of eutrophication in semi-natural lake and evaluated the potential solution to inhibit further eutrophication.
Reported the ecological parameters tracking to supervisor weekly and provided the final report and recommendation for further action.

Crafted proposals for innovation solutions to substitute cigarette.
Managed the project as well as maintained or improved the work package to determine the potential of chewing tobacco as cigarette substitute.
Analyzed the customer satisfaction through food tasting and recommended further improvement in the ingredients of chewing candy.
Held progress meetings to ensure timelines and budgets were being met.

Created investigation to recycle the waste quail and duck egg shells.
Conceived, designed, and executed the utilization methods for natural dye production from waste quail and duck egg shells.
Provided weekly reports to ensure the efficiency of utilization methods to give an economical value to waste egg shells.