Shortening composting period of swine waste: A two-step method combining rotary drum and vermicomposting with bulking agents

IF 4.4 3区生物学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Process Biochemistry Pub Date : 2026-02-01 Epub Date: 2025-12-18 DOI:10.1016/j.procbio.2025.12.012

C. Lalthlansanga , Bijayananda Mohanty , Ajay S. Kalamdhad

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引用次数: 0

Abstract

A novel strategy is investigated to optimize swine dung composting time and quality by sequential integration of Rotary Drum Composting (RDC) and Vermicomposting technologies. The pre-thermophilic treatment for 7 days in the rotary drum composter (RDC), followed by 30 days of vermicomposting with bulking agents, significantly reduced the overall composting duration and improved the quality of the final bioproducts. Post vermicomposting, enhanced levels of TKN, TP, and TK were observed in the final compost. Thus, at the end of the 30th day, the treatment using rice straw RV3 (rice straw + swine waste) outperformed with TKN (2.54 %), TP (11.58 g kg⁻¹) and TK (21.6 g kg⁻¹). Furthermore, the final compost satisfied heavy metal concentration safety standards, minimizing possible environmental risks with final concentrations of Cu < 200 mg kg⁻¹, Pb < 100 mg kg⁻¹ and Zn < 300 mg kg⁻¹ for the three reactors. This integrated composting technology offers a fast and efficient solution for swine waste composting, enhancing earthworm population growth, making it a viable and sustainable agriculture option.

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缩短猪粪堆肥周期：转鼓和蚯蚓堆肥加膨化剂两步法

研究了一种将转鼓堆肥（RDC）和蚯蚓堆肥（vermicorcomposting）技术序贯结合的优化猪粪堆肥时间和质量的新策略。在转鼓式堆肥机（RDC）中进行7天的热前处理，然后添加膨化剂进行30天的蚯蚓堆肥，显著缩短了总体堆肥时间，提高了最终生物制品的质量。蚯蚓堆肥后，在最终堆肥中观察到TKN、TP和TK水平的提高。因此，在第30天结束时，稻草RV3（稻草+猪粪）处理的效果优于TKN（2.54 %）、TP（11.58 g kg−1）和TK（21.6 g kg−1）。此外,最后堆肥重金属浓度满足安全标准,尽量减少可能的环境风险最终浓度的铜& lt; 200  毫克公斤−1 Pb & lt; 100  毫克公斤−1和锌& lt; 300  毫克公斤−1的三个反应堆。这种综合堆肥技术为猪粪堆肥提供了快速有效的解决方案，促进了蚯蚓种群的增长，使其成为一种可行和可持续的农业选择。

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来源期刊

Process Biochemistry 生物-工程：化工

CiteScore

8.30

自引率

4.50%

发文量

374

审稿时长

53 days

期刊介绍： Process Biochemistry is an application-orientated research journal devoted to reporting advances with originality and novelty, in the science and technology of the processes involving bioactive molecules and living organisms. These processes concern the production of useful metabolites or materials, or the removal of toxic compounds using tools and methods of current biology and engineering. Its main areas of interest include novel bioprocesses and enabling technologies (such as nanobiotechnology, tissue engineering, directed evolution, metabolic engineering, systems biology, and synthetic biology) applicable in food (nutraceutical), healthcare (medical, pharmaceutical, cosmetic), energy (biofuels), environmental, and biorefinery industries and their underlying biological and engineering principles.