Modified Carbon-Based Fe (II)- ZIF Nanomaterials as a Highly-Selective Adsorbent for Phosphate Removal

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2025-03-12 DOI:10.1007/s11270-025-07868-5

Xu Liu, Yushan Li, Hao Zhou, Boxing An, Xingyu Yang, Cong Liu, Haiyan Liu, Hai Liang, Zhengqi Liang, Liansheng Li, Guicheng Li, Yingying Zuo

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引用次数: 0

Abstract

As a porous carbon material, oil sludge pyrolysis residue (OSPR) is widely used in the removal of pollutants in water. Due to the blockage of pore structure and low specific area, its adsorption effect is restricted. In this paper, acid etching strategy is adopted to solve the problem of pore blockage, and Fe (II) -ZIF is loaded to improve the specific surface area and adsorption location of material. It can achieve the purpose of efficiently removing phosphate from water and realize the high value utilization of OSPR. Herein, Fe (II) -ZIF/ae-OSPR with Fe (II) metal center and rich vacancy structure was successfully synthesized by using Fe (II) -ZIF as the metal organic skeleton and ae-OSPR as the carrier carbon skeleton for phosphate removal from water. The prepared Fe (II) -ZIF/ae-OSPR has a high adsorption capacity for phosphate, with a maximum adsorption capacity of 198.3 mg g⁻¹, and still maintained a high adsorption capacity for phosphate in the pH range of 1–6. The adsorption kinetics showed that the main mechanism of phosphate adsorption was chemical adsorption (R²_Second = 0.9617 > R²_First = 0.9357), and the thermodynamic model showed that the adsorption process was endothermic reaction. The adsorption capacity of Fe (II) -ZIF/ae-OSPR for phosphate was not affected by the coexisting anions (Cl⁻, CO₃²⁻, NO₃⁻ and SO₄²⁻), and the adsorption capacity was still maintained at 190.8 mg g⁻¹ after 6 cycles of regeneration. The adsorption mechanism showed that the removal of phosphate by Fe (II) -ZIF/ae-OSPR was the result of the charge-force effect of amine group and Fe (II) on phosphate group. The adsorption efficiency of Fe (II) -ZIF/ae-OSPR for phosphate in practical wastewater shows that Fe (II) -ZIF/ae-OSPR has a good engineering application prospect.

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.