Centre for Advanced Composite Materials (CACM), Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia.
Centre for Advanced Composite Materials (CACM), Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia; Department of Chemical Engineering, Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia; Institute of Tropical Forest and Forest Products, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Centre of Excellence for Biomass Utilization, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia.
Int J Biol Macromol. 2024 Oct;278(Pt 4):135088. doi: 10.1016/j.ijbiomac.2024.135088. Epub 2024 Aug 26.
Water contamination poses a significant challenge to environmental and public health, necessitating sustainable wastewater treatment solutions. Adsorption is one of the most widely used techniques for purifying water, as it effectively removes contaminants by transferring them from the liquid phase to a solid surface. Bio-based hydrogel adsorbents are gaining popularity in wastewater treatment due to their versatility in fabrication and modification methods, which include blending, grafting, and crosslinking. Owning to their unique structure and large surface area, modified hydrogels containing reactive groups like amino, hydroxyl, and carboxyl, or functionalized hydrogels with inorganic nanoparticles particularly graphene nanomaterials, have demonstrated promising adsorption capabilities for both inorganic and organic contaminants. Bio-based hydrogels have excellent physicochemical properties and are non-toxic, environmentally friendly, and biodegradable, making them extremely effective at removing contaminants like heavy metal ions, dyes, pharmaceutical pollutants, and organic micropollutants. The versatility of hydrogels allows for various forms to be used, such as films, beads, and nanocomposites, providing flexibility in handling different contaminants like dyes, radionuclides, and heavy metals. Additionally, researchers also have shown the potential for recycling and regenerating post-treatment hydrogels. This approach not only addresses the challenges of wastewater treatment but also offers sustainable and effective solutions for mitigating water pollution.
水污染对环境和公共健康构成重大挑战，因此需要可持续的废水处理解决方案。吸附是净化水最广泛使用的技术之一，因为它通过将污染物从液相转移到固体表面来有效地去除污染物。基于生物的水凝胶吸附剂在废水处理中越来越受欢迎，因为它们在制造和改性方法上具有多功能性，包括共混、接枝和交联。由于其独特的结构和较大的表面积，含有反应性基团（如氨基、羟基和羧基）的改性水凝胶或功能化水凝胶与无机纳米粒子（特别是石墨烯纳米材料）结合，已经证明对无机和有机污染物具有很有前途的吸附能力。基于生物的水凝胶具有优异的物理化学性质，并且无毒、环保且可生物降解，因此非常有效地去除重金属离子、染料、药物污染物和有机微污染物等污染物。水凝胶的多功能性允许使用各种形式，如膜、珠和纳米复合材料，从而在处理染料、放射性核素和重金属等不同污染物时提供了灵活性。此外，研究人员还展示了对后处理水凝胶进行回收和再生的潜力。这种方法不仅解决了废水处理的挑战，而且为减轻水污染提供了可持续和有效的解决方案。
