Lim Jun Jie, Sethupathi Sumathi, Mohd Ismail Nor Ismaliza, Munusamy Yamuna
Faculty of Engineering and Green Technology, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia.
Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia.
Water Environ Res. 2025 Jun;97(6):e70104. doi: 10.1002/wer.70104.
Wastewater treatment is crucial to ensure environmental sustainability and the availability of clean water for human consumption. It is of utmost importance that the valuable nutrients in the wastewater are recovered. Recently, many researchers have made interesting discoveries using green waste or minerals to treat wastewater and recover nutrients from wastewater. Nutrients which encourage eutrophication of water resources, such as nitrate, nitrite, ammonium, and phosphorus, are the common ones being explored. The nutrients are adsorbed on sorbents, which are recycled from waste and biodegradable material. Upon adsorption of nutrients, the spent sorbents are categorized as green and eco-friendly material which can be further utilized as a soil conditioner. Thus, this review discussed different types of sorbents and its respective efficacy towards nutrient adsorption and feasibility to be recycled as soil conditioner. Factors affecting the performance of the sorbents were detailed and comparisons were made for the best application as soil conditioner. Suggestion was outlined for future focus areas in this work and potential future application in real case scenarios. This review would be beneficial to researchers to achieve a cradle-to-cradle concept for wastewater nutrient recovery. SUMMARY: Recovery of phosphorus and nitrogen from wastewater using sustainable adsorbents Adsorption efficiency of adsorbents aligning with cradle-to-cradle concept Insights into the advantages and limitations of reported adsorbents Spent adsorbents as soil conditioners, enhancing soil fertility, structure, and promoting sustainable nutrient recycling.
废水处理对于确保环境可持续性以及为人类消费提供清洁水至关重要。回收废水中有价值的养分极为重要。最近，许多研究人员利用绿色废物或矿物质处理废水并从废水中回收养分，取得了有趣的发现。正在探索的常见养分包括会促使水资源富营养化的硝酸盐、亚硝酸盐、铵和磷等。这些养分被吸附在吸附剂上，吸附剂由废物和可生物降解材料回收而来。吸附养分后，用过的吸附剂被归类为绿色环保材料，可进一步用作土壤改良剂。因此，本综述讨论了不同类型的吸附剂及其对养分吸附的各自功效以及作为土壤改良剂进行回收利用的可行性。详细阐述了影响吸附剂性能的因素，并对作为土壤改良剂的最佳应用进行了比较。概述了这项工作未来的重点领域建议以及在实际案例中的潜在未来应用。本综述将有助于研究人员实现废水养分回收的从摇篮到摇篮的理念。总结：使用可持续吸附剂从废水中回收磷和氮吸附剂的吸附效率符合从摇篮到摇篮的理念深入了解已报道吸附剂的优缺点用过的吸附剂作为土壤改良剂，提高土壤肥力、结构并促进可持续养分循环利用。
