Lignin-based black liquor from oil palm empty fruit bunches (OPEFB) as a side product of the pretreatment process in second-generation bioethanol is the next problem in developing renewable energy. Therefore, developing technology to overcome this problem is needed. In this study, titanium dioxide (TiO₂) as photocatalyst and their synergy with heterogeneous Fenton-like process for degrading lignin was investigated. Several conditions were varied and investigated independently to obtain the optimum condition. Result showed that among the conditions has the optimum number. 0.5 g of FeSO₄, 400 mg/L of H₂O₂, pH 4, and 0.03 g of TiO₂ were the optimum condition of heterogeneous photo-Fenton to decompose 100 ppm of Lignin up to 90% under UV-A irradiation. Post annealing treatment of the prepared TiO₂ improved the photodegradation around 50%. The schematic illustration of lignin photodecomposition also supported the results.

来自油棕空果串（OPEFB）的木质素黑液作为第二代生物乙醇预处理工艺的副产品，是开发可再生能源中的下一个问题。因此，需要开发克服该问题的技术。在这项研究中，研究了二氧化钛（TiO ₂）作为光催化剂及其与非均相Fenton样工艺降解木质素的协同作用。改变几个条件并独立研究以获得最佳条件。结果表明，在该条件下具有最佳数量。0.5克的FeSO的₄，400毫克/ H L ₂ ö ₂，pH为4，并0.03克的TiO ₂是非均质光芬顿在UV-A辐射下分解100 ppm木质素达90％的最佳条件。所制备的TiO _2的后退火处理将光降解提高了约50％。木质素光分解的示意图也支持该结果。