Simultaneous Improvement of Water/Fertility Retention and Physical Properties of Dredged Sediment Using a Novel Composite Amendment

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2024-06-26 DOI:10.1007/s11270-024-07279-y

Peishu Huo, Xiaori Fu, Zheng Che, Jingbo Liang, Dexiao Li, Yulong Liu, Shuguang Lyu

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Abstract

In order to control the eutrophication of rivers or lakes by dredging, a large amount of sediment has been generated, making the treatment of dredged sediment a challenging issue. In response to this problem, we have successfully synthesized an innovative composite amendment for reusing dredged sediment, which included Fe-loaded biochar (Fe@BC), clinoptilolite, wheat straw, and 3,4-dimethylepyrazole phosphate (DMPP). Tests for adsorption and characterization showed that Fe@BC and clinoptilolite, as the main components of the amendment, have excellent adsorption performance for orthophosphate (Ortho-P) and ammonium nitrogen (NH₄⁺-N)/potassium ions (K⁺), respectively. The results of column leaching experiment demonstrated that the addition of 4%-5% amendment of the sediment mass could not only significantly reduce the leaching of nitrogen (N), phosphorus (P), and potassium (K), but also effectively slowed down the movement of N, P, and K in the sediment profile. Moreover, the bulk density, moisture retention, and particle size of sediment were simultaneously improved.

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利用新型复合改良剂同时改善疏浚沉积物的水/肥力保持力和物理特性

为了通过疏浚来控制河流或湖泊的富营养化，产生了大量的沉积物，这使得疏浚沉积物的处理成为一个具有挑战性的问题。针对这一问题，我们成功合成了一种创新的复合改良剂，用于疏浚沉积物的再利用，其中包括含铁生物炭（Fe@BC）、clinoptilolite、小麦秸秆和 3,4-二甲基吡唑磷酸盐（DMPP）。吸附和特性测试表明，Fe@BC 和cllinoptilolite 作为改良剂的主要成分，分别对正磷酸盐（Ortho-P）和铵态氮（NH4+-N）/钾离子（K+）具有优异的吸附性能。柱浸出实验结果表明，在沉积物中添加 4%-5% 的改良剂不仅能显著减少氮（N）、磷（P）和钾（K）的浸出，还能有效减缓 N、P 和 K 在沉积物剖面中的移动。此外，沉积物的体积密度、保湿性和颗粒大小也同时得到了改善。

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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.