Amendment of Nutrient-deficient Alluvial Soil by Municipal Solid Waste Char and Compost for the Remediation of Contaminants and Enhancement of Plant Growth

IF 3.8 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2025-03-15 DOI:10.1007/s11270-025-07872-9

Silvia Saikia, Harsh Prit, Krishna Chaitanya Maturi, Ajay S. Kalamdhad

引用次数: 0

Abstract

This study evaluated the effects of municipal solid waste (MSW) char and compost amendments on alluvial soil over 120 days. Results showed improved soil properties with reduced bulk density by 12%, increased porosity by 14%, cation exchange capacity (CEC) by 6.14-fold, 11.3% increase in pH, soil organic matter (SOC) and soil organic carbon increased by 5.49 and 2.27-fold, respectively. Nutrient levels initially rose with higher amendment doses but declined over time, staying above control levels. Heavy metal availability was lower with the application of 1% MSW char alone, while the combined application of char with compost increased exchangeable metal bioavailability. A pot study with Okra showed reduced heavy metal uptake and improved plant growth compared to the control. Overall, the combined use of MSW char and compost boosts soil health and plant growth, while MSW char alone effectively reduces heavy metal availability in soil.

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用城市固体废渣和堆肥改良营养不良的冲积土，以修复污染物并促进植物生长

这项研究评估了城市固体废物（MSW）炭和堆肥添加剂在 120 天内对冲积土的影响。结果显示，土壤性质得到改善，容重降低了 12%，孔隙度增加了 14%，阳离子交换容量（CEC）增加了 6.14 倍，pH 值增加了 11.3%，土壤有机质（SOC）和土壤有机碳分别增加了 5.49 倍和 2.27 倍。养分水平最初随着添加剂量的增加而上升，但随着时间的推移逐渐下降，保持在对照水平之上。单独施用 1%的城市固体废弃物炭时，重金属的可利用性较低，而同时施用炭和堆肥时，可交换金属的生物利用性提高。对秋葵进行的盆栽研究表明，与对照组相比，重金属吸收量降低，植物生长状况改善。总之，联合使用都市固体废物炭和堆肥可促进土壤健康和植物生长，而单独使用都市固体废物炭则可有效降低土壤中的重金属可用性。

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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.