Rapid Reduction of Phytotoxicity in Green Waste for Use as Peat Substitute: Optimization of Ammonium Incubation Process
Wenzhong Cui, Juncheng Liu, Qi Bai, Lingyi Wu, Zhiyong Qi, Wanlai Zhou
TL;DR
This study develops a low-cost method to convert green waste into a sustainable peat substitute by reducing its phytotoxicity using ammonium incubation.
Contribution
The paper introduces an optimized ammonium incubation process for detoxifying green waste as a peat alternative.
Findings
Ammonium carbonate at 1.5% significantly reduced phytotoxicity in green waste.
Optimal detoxification occurred at 30 °C for 5 days with regular aeration.
Treated green waste supported lettuce growth as a partial peat substitute.
Abstract
The rapid growth of the horticultural industry has increased demand for soilless cultivation substrates. Peat, valued for its physical and chemical properties, is widely used in soilless cultivation. However, peat is non-renewable, and over-extraction poses serious ecological risks. Therefore, sustainable alternatives are urgently needed. Ammonium incubation, a novel method to reduce phytotoxicity, offers the potential for green waste, a significant organic solid waste resource, to substitute peat. This study optimized the ammonium incubation process to reduce green waste phytotoxicity. It systematically examined different nitrogen salts (type and amount) and environmental conditions (temperature, aeration, duration) affecting detoxification efficiency. Results show a significant reduction in phytotoxicity with ammonium bicarbonate, carbonate, and sulfate, especially carbonate, at 1.5%.…
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Taxonomy
TopicsComposting and Vermicomposting Techniques · Constructed Wetlands for Wastewater Treatment · Plant Growth Enhancement Techniques