All Stories

  1. Investigation of the heat transfer coefficient in a plate heat exchanger for cooling product before storage: Based on a biodiesel plant case

    Article • Case Studies in Thermal Engineering, August 2025, Elsevier

    Professor Noureddine Elboughdiri, Vikram Alexander

  2. Sustainable production of CaO rich-indigofera (Indigofera zollingeriana) as heterogeneous catalyst of biodiesel from refined bleached deodorized palm olein using associated transesterification process

    Article • Results in Engineering, June 2025, Elsevier

    Taslim -, Vikram Alexander

  3. Enhanced H2S absorption and water recovery using Thiobacillus sp. and Azolla microphylla for zero-waste palm oil mill applications

    Article • Case Studies in Chemical and Environmental Engineering, June 2025, Elsevier

    Vikram Alexander

  4. Development of a novel co-composting system for empty fruit bunches using UASB-HCPB fermentor-derived effluent for sustainable palm oil waste management: Design, performance evaluation, and kinetic study

    Article • Journal of Hazardous Materials Advances, May 2025, Elsevier

    Vikram Alexander

  5. Comparison of column adsorption processes by downflow and upflow for removal of cupric (Cu2+) ion solutions using non activated and activated charcoal from rambutan (Nephelium lappaceum L.) stems

    Article • South African Journal of Chemical Engineering, April 2025, Elsevier

    Tubagus Rayyan Fitra Sinuhaji, Vikram Alexander

  6. Competence of corncob (Zea mays L.) powder with HCl activation as adsorbent to purify waste cooking oil: Reference in the batch adsorption process

    Article • South African Journal of Chemical Engineering, April 2025, Elsevier

    Vikram Alexander

  7. The Effect of Particle Size, Activation Type and Contact Time of Cocoa Pod Husk (Theobroma Cacao L.) Activated Carbon on Artificial Waste Chromium Adsorption Capability

    Article • Environmental Research Engineering and Management, March 2025, Publishing House Technologija

    Vikram Alexander

  8. Synergistic integration of zeolite engineering and fixed-bed column design for enhanced biogas upgrading: Adsorbent synthesis, CO2/CH4 separation kinetics, and regeneration assessment

    Article • Separation and Purification Technology, March 2025, Elsevier

    Vikram Alexander

  9. The effect of turning frequency on the compost dynamics and quality derived from empty fruit bunches, <i>Azolla microphylla</i>, and active organic fertilizer

    Article • Journal of Ecological Engineering, February 2025, Wydawnictwo Naukowe Gabriel Borowski (WNGB)

    Vikram Alexander

  10. Effect of reaction temperature on biodiesel production from refined bleached and deodorized palm olein using heterogeneous catalyst from indigofera (Indigofera zollingeriana) leaves ash

    Article • IOP Conference Series Earth and Environmental Science, January 2025, Institute of Physics Publishing

    Taslim -, Vikram Alexander

  11. Batch operations for turbidity reduction in Babura River using carbonized peanut (Arachis hypogaea L.) shells with various particle sizes

    Article • IOP Conference Series Earth and Environmental Science, January 2025, Institute of Physics Publishing

    Vikram Alexander

  12. Biogas upgrading via CO2 absorption using monosodium glutamate-promoted potassium carbonate in packed absorption column: Design and performance assessment

    Article • South African Journal of Chemical Engineering, January 2025, Elsevier

    Vikram Alexander

  13. Improving efficiency and product quality by optimizing methanol purification in biodiesel plant: Addressing abnormalities in distillation column performance

    Article • International Journal of Thermofluids, January 2025, Elsevier

    Vikram Alexander

  14. Natural corrosion inhibitors derived from powder, concentrated extract and tannin of ketapang (Terminalia catappa L.) leaves for iron protection in sodium chloride solutions

    Article • Current Research in Green and Sustainable Chemistry, January 2025, Elsevier

    Vikram Alexander

  15. Pectin-Starch Biocomposite Reinforced with Rattan-Derived Cellulose Nanocrystals: A Study of Mechanical and Water Absorption Properties

    Article • Tropical Journal of Natural Product Research, December 2024, University of Benin

    Vikram Alexander

  16. Inlet diverters and oil collectors in distillation columns for reducing COD and BOD5 in biodiesel plants

    Article • Case Studies in Chemical and Environmental Engineering, December 2024, Elsevier

    Taslim -, Vikram Alexander

  17. Investigating the catastrophic roof failure of a fatty acid storage tank: Causes, mechanisms, and safety implications

    Article • Journal of Loss Prevention in the Process Industries, December 2024, Elsevier

    Taslim -, Vikram Alexander

  18. MATLAB-empowered brightness defect prediction system in pulp processing bleaching stage: An empirical modelling approach

    Article • Case Studies in Chemical and Environmental Engineering, December 2024, Elsevier

    Vikram Alexander

  19. Reusability of amberlyst CM-4 catalyst through continuous methanol washing with nitrogen gas in biodiesel production using lauric acid as feedstock

    Article • Case Studies in Chemical and Environmental Engineering, December 2024, Elsevier

    Vikram Alexander

  20. Towards low-cost and sustainable biochar production based on empty fruit bunch: Effect of pelletization, microwave power, residence time, and mass on biochar quality for commercial approach

    Article • Case Studies in Chemical and Environmental Engineering, December 2024, Elsevier

    Vikram Alexander

  21. Failure investigation of canned motor pump high temperature at yellow Teikoku Rotary Guardian as circulating pumps on the refining column

    Article • Scientific Reports, November 2024, Springer Science + Business Media

    Taslim -, Vikram Alexander

  22. Solar energy for operating solar cookers as a clean cooking technology in South Asia: A review

    Article • Solar Energy, November 2024, Elsevier

    Vikram Alexander

  23. Utilization of natural and chemical activation corncob as adsorbent for continuous purification of used cooking oil using adsorption column

    Article • IOP Conference Series Earth and Environmental Science, November 2024, Institute of Physics Publishing

    Vikram Alexander

  24. Study of solid waste generation and techno-economic analysis of pyrolysis of HDPE waste plastics in an academic institution in Nepal

    Article • International Journal of Sustainable Engineering, October 2024, Taylor & Francis

    Vikram Alexander

  25. The Effect of Pyrolysis Temperature and Raw Materials Mass Comparison on the Characteristics of Briquettes from a Mixture of Rice Husk (Oryza sativa L.) and Jengkol Peel (Pithecellobium jiringa) Using Starch Adhesives

    Article • Tropical Journal of Natural Product Research, October 2024, University of Benin

    Vikram Alexander

  26. Effect of hydraulic retention time and effluent recycle ratio on biogas production from POME using UASB-HCPB fermentor assisted with ultrafiltration membrane at mesophilic condition

    Article • South African Journal of Chemical Engineering, October 2024, Elsevier

    Vikram Alexander

  27. SDS and TX-100 performance in removing Cd ion from contaminated sand in flushing column

    Article • Colloids and Surfaces A Physicochemical and Engineering Aspects, September 2024, Elsevier

    Vikram Alexander, Tubagus Rayyan Fitra Sinuhaji

  28. Techno-economic analysis of green hydrogen production, storage, and waste heat recovery plant in the context of Nepal

    Article • International Journal of Hydrogen Energy, August 2024, Elsevier

    Vikram Alexander

  29. Durian peel (Durio zibethinus) utilization as an adsorbent in the purification of acidified crude glycerol

    Article • South African Journal of Chemical Engineering, July 2024, Elsevier

    Vikram Alexander

  30. An investigation shell and tube heat exchanger for cooling system: A case study of biodiesel plants using lauric acid

    Article • Case Studies in Thermal Engineering, June 2024, Elsevier

    Vikram Alexander

  31. Treatment of effluent from the upflow anaerobic sludge blanket-hollow centered packed bed fermentor by utilizing Chlorella vulgaris in a fed-batch system

    Article • Case Studies in Chemical and Environmental Engineering, June 2024, Elsevier

    Vikram Alexander

  32. Combination of addition and activation of lipase enzyme in peanut seed (Arachis hypogaea L.) for direct fatty acid production

    Article • IOP Conference Series Earth and Environmental Science, May 2024, Institute of Physics Publishing

    Vikram Alexander

  33. Effect of methanol purity on biodiesel production from lauric acid using esterification reaction

    Article • IOP Conference Series Earth and Environmental Science, May 2024, Institute of Physics Publishing

    Vikram Alexander

  34. Sustainable Waste Management with AI: Waste Classification Using Deep Learning and IoT-Based Analysis of CH4 Production

    Article • February 2024, Institute of Electrical & Electronics Engineers (IEEE)

    Vikram Alexander

  35. Extraction of soursop leaves (Annona Muricata L.) as a source of zinc corrosion inhibitor in sodium chloride medium

    Article • Voprosy Khimii i Khimicheskoi Tekhnologii, February 2024, SHEI Ukrainian State University of Chemical Technology

    Vikram Alexander

  36. Comparison of natural corn cob and carbon corn cob in the purification of used cooking oil with shaker operation

    Article • IOP Conference Series Earth and Environmental Science, February 2024, Institute of Physics Publishing

    Vikram Alexander

  37. Purification of used cooking oil using natural corn cob and carbon corn cob as adsorbent with batch operation

    Article • IOP Conference Series Earth and Environmental Science, February 2024, Institute of Physics Publishing

    Vikram Alexander

  38. The effect of vacuum process on biodiesel production from Palm Kernel Fatty Acid Distillate

    Article • Chemical Industry and Chemical Engineering Quarterly, January 2024, National Library of Serbia

    Vikram Alexander

  39. Application of soursop leaves (Annona muricata L.) as an iron corrosion inhibition in sodium chloride medium

    Article • January 2024, American Institute of Physics

    Vikram Alexander

  40. Activation and addition of lipase enzyme in coconut (Cocos nucifera) in direct fatty acid production

    Article • January 2024, American Institute of Physics

    Vikram Alexander

  41. The effect of glycerol and sago starch addition on the characteristics of bioplastic based on orange peel pectin

    Article • Chemical Industry and Chemical Engineering Quarterly, January 2024, National Library of Serbia

    Vikram Alexander

  42. Unlocking the Secrets of Solid Waste Generation in Pulchowk Campus: A Comprehensive Exploration and In-Depth Analysis

    Article • January 2024, Elsevier

    Vikram Alexander

  43. Recycling heterogeneous catalyst waste in biodiesel production using methanol and hydrochloric acid: A case study on the washing effect with lauric acid as raw material

    Article • Case Studies in Chemical and Environmental Engineering, December 2023, Elsevier

    Vikram Alexander

  44. Study on adsorption capacity of corn stalks in decreasing the turbidity of Babura river water with batch operation

    Article • EUREKA Physics and Engineering, September 2023, OU Scientific Route

    Vikram Alexander

  45. THE UTILIZATION OF PIMPING GRASS (THEMEDA GIGANTEA) AS ADSORBENT OF BABURA RIVER WATER TURBIDITY WITH BATCH OPERATION

    Article • Water Conservation and Management, September 2023, Razi Publishing

    Vikram Alexander

  46. Natural adsorbent of corncob (Zea mays L.) powder capability in purification of used cooking oil with shaking operation based on turbidity

    Article • Results in Engineering, September 2023, Elsevier

    Vikram Alexander

  47. Environmental sustainability through the utilization of corn cobs as an adsorbent material in waste cooking oil

    Article • IOP Conference Series Earth and Environmental Science, September 2023, Institute of Physics Publishing

    Vikram Alexander

  48. Natural operation in removing waste compounds within cooking oil using corn cob as adsorbent

    Article • IOP Conference Series Earth and Environmental Science, September 2023, Institute of Physics Publishing

    Vikram Alexander

  49. Comparison of adsorbing on dissolved copper metal by Natural and Activated Carbon from Rambutan (Nephelium Sp.) Rods

    Article • ARPN Journal of Engineering and Applied Sciences, June 2023, Asian Research Publishing Network

    Vikram Alexander

  50. Remediation of contaminated sand by Cd ions with variation operation: Batch and flushing column with foam and without foam of SDS surfactant

    Article • South African Journal of Chemical Engineering, April 2023, Elsevier

    Vikram Alexander, Tubagus Rayyan Fitra Sinuhaji

  51. Drying Kinetic Models of Rice Applying Fluidized Bed Dryer

    Article • Mathematical Modelling and Engineering Problems, February 2023, International Information and Engineering Technology Association

    Vikram Alexander

  52. Estimation of the settling time of wastewater using the Buoyancy Weighing Bar Method

    Article • January 2023, American Institute of Physics

    Vikram Alexander

  53. Tannin extraction from Jengkol peel (Pithecellobium jiringa) with maceration method using ethanol as solvent

    Article • January 2023, American Institute of Physics

    Vikram Alexander

  54. Comparison of zinc corrosion rate and iron corrosion rate in chloride acid medium using petai peel as a corrosion inhibitor

    Article • January 2023, American Institute of Physics

    Vikram Alexander

  55. An Investigation Shell and Tube Heat Exchanger for Cooling System: A Case Study of Biodiesel Plants Using Lauric Acid

    Article • January 2023, Elsevier

    Vikram Alexander

  56. APPLICATION OF JENGKOL PEEL (Pithecollobium jiringa) AS IRON CORROSION INHIBITORS IN HYDROCHLORIC ACID MEDIUM

    Article • RASAYAN Journal of Chemistry, January 2022, Rasayan Journal of Chemistry

    Vikram Alexander

  57. THE USE OF PANDAN LEAVES (Pandanus amaryllifolius Roxb.) AS IRON CORROSION INHIBITOR IN HCl MEDIUM

    Article • RASAYAN Journal of Chemistry, January 2022, Rasayan Journal of Chemistry

    Vikram Alexander

  58. Performance comparison of maceration method, soxhletation method, and microwave-assisted extraction in extracting active compounds from soursop leaves (Annona muricata): A review

    Article • IOP Conference Series Materials Science and Engineering, March 2021, Institute of Physics Publishing

    Vikram Alexander

  59. The use of soxhletation method and microwave-assisted extraction in extracting tannin from jengkol peel (Pithecellobium jiringa)

    Article • IOP Conference Series Materials Science and Engineering, March 2021, Institute of Physics Publishing

    Vikram Alexander

  60. Application of petai peel as an iron corrosion inhibitor in sodium chloride medium

    Article • IOP Conference Series Materials Science and Engineering, March 2021, Institute of Physics Publishing

    Vikram Alexander

  61. Separation time determining of glycerol in biodiesel by the buoyancy weighing bar method

    Article • January 2021, American Institute of Physics

    Vikram Alexander

  62. Determination of Cocoa Powder Particle Size Distribution by Using the Buoyancy Weighing-Bar Method

    Article • IOP Conference Series Materials Science and Engineering, December 2020, Institute of Physics Publishing

    Vikram Alexander

  63. Effect of Reaction Time on Biodiesel Production from Palm Fatty Acid Distillate by Using PTSA as a Catalyst

    Article • IOP Conference Series Materials Science and Engineering, December 2020, Institute of Physics Publishing

    Vikram Alexander

  64. The potential of Petai peel as a zinc corrosion inhibitor in sodium chloride solution

    Article • International Journal of Corrosion and Scale Inhibition, September 2020, IFHAN

    Vikram Alexander