椰渣及其生物炭作为水培基质对水培系统性能和氮转化的影响

IF 3.6 2区农林科学 Q2 AGRICULTURAL ENGINEERING

Aquacultural Engineering Pub Date : 2025-01-18 DOI:10.1016/j.aquaeng.2025.102512

Tianpei Li , Xiaochan Wang , Ze Zhu , Oorbessy Gaju , Yinyan Shi , Yuru Chang

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引用次数: 0

摘要

水培系统结合了水产养殖和水培，创造了一个循环和可持续的农业模式，优化了养分的利用。提高氮素利用效率对系统的运行性能和养分循环至关重要。本研究探讨了解耦合水培系统中，圣子番茄（Lycopersicon esculentum var. cerasiformme）对不同基质（包括椰子废弃物及其生物炭和麦饭石）的生长响应，重点研究了鲫鱼养殖废水中氨、硝酸盐和亚硝酸盐的再利用。在不同隔间监测了樱桃番茄植株的生理信息（株高、全株鲜重、番茄果实重等）和水质参数（氨氮、亚硝酸盐氮、硝酸盐氮、pH）。结果表明，以6 mm柱状生物炭为底物，可显著提高番茄鲜重、叶绿素含量和植株总重，养殖废水对圣果的氮转化率达89 %以上。76 d内，氨氮、亚硝酸盐和硝酸盐的相对去除率分别达到84.20 %、95.13 %和83.98 %以上。粒径为6 mm的生物炭复合材料具有良好的氮固定化和脱氮性能，为生物质材料的资源化利用提供了一条新的途径。综上所述，采用生物炭复合材料作为培养基质可提高水培系统的氮转化率和整体系统效率，为生物质材料的有效可持续利用提供了一种有效的方法。

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Effect of coconut waste and its biochar as hydroponics substrates on system performance and nitrogen transformation in aquaponics

Aquaponic systems combine aquaculture and hydroponics, creating a circular and sustainable agricultural model that optimizes nutrient utilization. Improving nitrogen use efficiency is crucial for the system’s operational performance and nutrient cycling. This study explored the growth response of cherry tomatoes (Lycopersicon esculentum var. Cerasiforme) to different substrates, including coconut wastes and their biochar and medical stone, in the decoupled aquaponics system, focusing on reusing ammonia, nitrate and nitrite from crucian carp (Carassius auratus) farming effluent. Cherry tomato plants physiological information (plant height, fresh weight of the whole plant, and weight of tomato fruits, etc) and water quality parameters (ammonia nitrogen, nitrite nitrogen and nitrate nitrogen, pH) were monitored across different compartments. Results showed that using 6 mm columnar biochar as a substrate significantly improved the fresh weight, chlorophyll content, and overall weight of tomato plants, and the nitrogen conversion rate from aquaculture effluent to cherry tomatoes exceeded 89 %. Within 76 days, the relative removal rates of ammonia, nitrite and nitrate were above 84.20 %, 95.13 % and 83.98 %, respectively. The biochar composite with a 6 mm particle size demonstrated superior nitrogen immobilization and removal, suggesting a novel approach for the resource utilization of biomass materials. In conclusion, using biochar composite as a cultivation substrate improves nitrogen conversion rates and overall system efficiency of the aquaponic system, providing an effective and sustainable method for biomass material utilization.

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来源期刊

Aquacultural Engineering 农林科学-农业工程

CiteScore

8.60

自引率

10.00%

发文量

审稿时长

>24 weeks

期刊介绍： Aquacultural Engineering is concerned with the design and development of effective aquacultural systems for marine and freshwater facilities. The journal aims to apply the knowledge gained from basic research which potentially can be translated into commercial operations. Problems of scale-up and application of research data involve many parameters, both physical and biological, making it difficult to anticipate the interaction between the unit processes and the cultured animals. Aquacultural Engineering aims to develop this bioengineering interface for aquaculture and welcomes contributions in the following areas: – Engineering and design of aquaculture facilities – Engineering-based research studies – Construction experience and techniques – In-service experience, commissioning, operation – Materials selection and their uses – Quantification of biological data and constraints