Limmun, Warunee
Loading...
Preferred name
Limmun, Warunee
Alternative Name
Limmun, W.
Main Affiliation
Email
warunee.li@kmitl.ac.th
9 results
Now showing 1 - 9 of 9
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Characterization and Application of Biochar Derived from Snake Fruit Peel for Lead Adsorption(2024-01-01) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effects of inner angle of bowl, flow rate and speed on the efficiency of glycerol separation from the raw biodiesel using cylindrical bowl centrifuge(2017-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Prototype of portable robusta coffee harvesting machine(2021-11-19); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, One-Step Synthesis of Magnetic Biochar from Durian Shell Via K2FeO4 Activation for Lead Removal(2024-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Water-spray washing technique as a purification process in the production of biodiesel(2020-09-08); Sansiribhan, SansaneeIn order to meet the standards set for biodiesel after biodiesel production via transesterification, a purification process is necessary. For the purification process, the wet washing method is mostly recommended because it is well-known for its easy application and high efficiency. However, this method requires a large volume of water and takes a long time. Consequently, this study focuses on designing a washing machine that reduces the amount of water used and shortens the application time for the washing method. The spray washing technique, a type of the wet washing method, was used for this study with a focus on the following parameters: The volume of water to crude biodiesel, flow rate, and time. All conditions investigated in the basic standards of biodiesel. The pH value, density, and velocity were considered as the criteria to select the optimum conditions for the washing machine. The results indicated that a volume ratio of 0.8:1 (water:crude biodiesel) and a flow rate of 4 L/min for 0.5 min was the optimum condition of the water washing machine for biodiesel purification that meets the international biodiesel specifications. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Application of Centrifuge Combined with Biodiesel Washing Machine with Biochar in Biodiesel Production(2025-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design of a separation machine using pneumatic system combined with sieve vibration for removing parchment coffee from Robusta green coffee bean(2020-12-18); The hulling process for coffee bean extraction may not effectively release the bean from parchment. This might negatively affect the aroma or taste of coffee in the coffee beans roasting process. Consequently, the objectives of this work were to design and construct a machine for separating parchment coffee from Robusta green coffee bean using a pneumatic separation system combined with sieve vibration. The performance of the separation machine was investigated under different operating conditions such as air velocity, vibration frequency, and the angle of sieve inclination. The samples were fed into the machine at a feed rate of 20 kg/h. The testing conditions were set at air velocities of 2 to 4 m/s, vibration frequencies of 36 to 40 Hz, and sieve inclination angle of 4° to 8°. The results showed that the purity and separation efficiency of parchment increased with increasing air velocity. Conversely, decreasing vibration frequency and sieve angle increased the purity and separation efficiency. The appropriate conditions for parchment coffee separation from Robusta green coffee bean using a pneumatic-sieve vibration system were 4 m/s air velocity, 36 Hz vibration frequency, and 8° sieve angle with the highest overall effectiveness of 92%. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Investigating the Optimization of Magnetic Biochar Production from Rubber Seed Shells for Enhanced Cr(VI) Removal Efficiency(2024-04-11); This study aimed to utilize agricultural and produce low-cost magnetic biochar from rubber-seed shells using ferric chloride (FeCl3) as a transition metal. The study employs Response Surface Methodology (RSM) based on the Box-Behnken Design (BBD) to determine optimal production conditions for removing chromium (Cr(VI)). The effect of preparation conditions such as pyrolysis temperature (500-700 °C), duration (90-180 min), and impregnation (1-3 M) on the produced magnetic biochar was examined. The optimal condition was demonstrated based on yield percentage and Cr(VI) removal efficiencies. The study revealed that the optimal conditions for producing magnetic biochar from rubber seed shells were a pyrolysis temperature of 580 °C, a pyrolysis time of 130 min, and a FeCl3 concentration of 3 M. Under these conditions, a yield of 48.63% was achieved, and the removal efficiencies for Cr(VI) were 41.29%. This research suggests that utilizing agricultural waste products from rubber seed shells may be a viable and economical method for producing magnetic biochar, which can serve as an efficient adsorption agent. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Comparative Analysis of Biochar Properties from Lemon and Kumquat Peels at Different Pyrolysis Temperatures(2025-01-01);