อิทธิพลของสารอินทรีย์ธรรมชาติต่อกลไกการอุดตันและการกำจัดโครเมียมเฮกซะวาเลนต์ด้วยเยื่อกรองแบบนาโน: 10.14416/j.ind.tech.2026.08.002
Year: 2026
Type: article
Abstract: This research aimed to evaluate the performance of nanofiltration (NF) membranes for the removal of hexavalent chromium (Cr⁶⁺) (10, 20 and 30 mg/L) from synthetic wastewater in the presence of natural organic matter (NOM) (10 mg/L as NOM) under a dead-end filtration system. The investigation focused on permeate flux behavior and fouling mechanisms using Hermia’s models. The results revealed that the coexistence of Cr⁶⁺ and NOM resulted in a significantly flux decline, which was attributed to ion accumulation and the deposition of organic matter on the membrane surface, leading to membrane fouling. Among the models, the Cake Filtration Model (CFM) showed the best agreement with the experimental data. In addition, the presence of NOM enhanced the removal efficiency of Cr⁶⁺. This improvement can be explained by the formation of a cake layer on the membrane surface and the electrical repulsion mechanism. This study highlights the significant role of NOM in membrane fouling behavior removal performance of nanofiltration membranes. The findings provide useful insights for design and development of appropriate water treatment processes for wastewater containing both heavy metals and natural organic matter.
Institutions: Ratchathani University, Ubon Ratchathani University
Language: Thai
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7218277409