Efficient Removal of Uranium (VI) by One-Step Synthetic Environmentally Friendly Hydroxyapatite Modified Attapulgite Composite Material: Adsorption Properties and Mechanism Studies

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

Water, Air, & Soil Pollution Pub Date : 2024-12-07 DOI:10.1007/s11270-024-07651-y

Longxiang Li, Zhongkui Zhou, Guanghui Wang, Yadan Guo, Yishuo Zhang, Yan Xin, ZhenZhen Wei

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引用次数: 0

Abstract

A one-step hydrothermal method was successfully employed to synthesize hydroxyapatite modified attapulgite composite material (HAP/ATP), which was characterized to determine physicochemical properties. Furthermore, the performance and mechanism of uranium removal by HAP/ATP were extensively investigated. Results indicated that HAP/ATP reached adsorption equilibrium for uranium at around 20 min with a maximum adsorption capacity of 387.27 mg·g⁻¹. Modern characterization techniques identified ion exchange, complexation, dissolution–precipitation, and electrostatic adsorption as the primary mechanisms for uranium removal by HAP/ATP. ATP, a type of clay mineral, possesses a large specific surface area and natural pores. When utilized as a carrier, ATP reduced agglomeration of load materials. HAP can introduce more adsorption functional groups for attapulgite, this is a synergy, exerting the complementarity of materials. HAP/ATP demonstrates promising potential as an environmentally friendly adsorbent material for the treatment of radioactive uranium-containing wastewater.

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一步合成环境友好型羟基磷灰石改性凹凸棒石复合材料对铀（ⅵ）的高效去除：吸附性能及机理研究

采用一步水热法制备了羟基磷灰石改性凹凸棒石复合材料（HAP/ATP），并对其进行了理化性质表征。进一步研究了HAP/ATP除铀的性能和机理。结果表明，HAP/ATP对铀的吸附在20 min左右达到平衡，最大吸附量为387.27 mg·g−1。现代表征技术确定离子交换、络合、溶解沉淀和静电吸附是HAP/ATP除铀的主要机制。ATP是一种粘土矿物，具有较大的比表面积和天然孔隙。当用作载体时，ATP减少了负载材料的团聚。HAP可以为凹凸棒石引入更多的吸附官能团，这是一种协同作用，发挥了材料的互补性。HAP/ATP作为一种环境友好型吸附材料，在处理放射性含铀废水方面具有广阔的应用前景。

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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.