Vermicomposting of landfill leachate using earthworms for biofertilizer production

S. Shaarani, Noor Zalina Hashim, Z. Arshad, R. C. Man, A. I. Nafsun, S. K. A. Mudalip, S. Z. Sulaiman
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Abstract

The accumulation of waste in landfill site is mainly due to increased urbanization and industrialization. The leachate produced beneath the landfills led to critical environmental issue. The objective of this study was to determine the effects of vermicomposting of landfill leachate using earthworms on biofertilizer production. Earthworms were utilized to convert organic matter in leachate into plant-nutrients that enhance the growth of plants and plants productivity. The concentration of nitrate (N), phosphorus (P) and potassium(K) in vermicompost was found to increase while pH and number of earthworms declined at the end of the vermicomposting period. The vermibin containing 90 earthworms (V1) (approximate 52g) in a mixture of 150 ml of leachate and 798 g of soil obtained the highest concentration of NPK compared to those containing 39 (V2) earthworms and 15 (V3) earthworms. This indicates that the concentration of NPK increased with the added amount of earthworms. V1 experienced an increase of 53–fold in N, 194-fold in P and 210–fold in K due to earthworm activity during the vermicomposting, thus improving the number of leaves (32 leaves). The data shows that vermicomposting might be a suitable technology for the decomposition of landfill leachate into nutritive biofertilizer.The accumulation of waste in landfill site is mainly due to increased urbanization and industrialization. The leachate produced beneath the landfills led to critical environmental issue. The objective of this study was to determine the effects of vermicomposting of landfill leachate using earthworms on biofertilizer production. Earthworms were utilized to convert organic matter in leachate into plant-nutrients that enhance the growth of plants and plants productivity. The concentration of nitrate (N), phosphorus (P) and potassium(K) in vermicompost was found to increase while pH and number of earthworms declined at the end of the vermicomposting period. The vermibin containing 90 earthworms (V1) (approximate 52g) in a mixture of 150 ml of leachate and 798 g of soil obtained the highest concentration of NPK compared to those containing 39 (V2) earthworms and 15 (V3) earthworms. This indicates that the concentration of NPK increased with the added amount of earthworms. V1 experienced an increase of 53–fold ...
利用蚯蚓对垃圾渗滤液进行蚯蚓堆肥生产生物肥料
垃圾填埋场的堆积主要是由于城市化和工业化程度的提高。垃圾填埋场下面产生的渗滤液导致了严重的环境问题。本研究的目的是确定蚯蚓堆肥垃圾渗滤液对生物肥料生产的影响。利用蚯蚓将渗滤液中的有机物转化为植物营养物质,促进植物生长和植物生产力。蚯蚓堆肥后期,土壤中硝态氮(N)、磷(P)和钾(K)浓度升高,pH值下降,蚯蚓数量减少。与含有39 (V2)蚯蚓和15 (V3)蚯蚓的蚯蚓相比,含有90条蚯蚓(V1)(约52g)的蚯蚓酶在150 ml渗滤液和798 g土壤的混合物中获得了最高的NPK浓度。说明氮磷钾浓度随蚯蚓添加量的增加而增加。在蚯蚓堆肥过程中,由于蚯蚓的活动,V1的氮、磷、钾含量分别增加了53倍、194倍和210倍,从而提高了叶片数(32片)。结果表明,蚯蚓堆肥是将垃圾渗滤液分解为有营养的生物肥料的一种适宜的技术。垃圾填埋场的堆积主要是由于城市化和工业化程度的提高。垃圾填埋场下面产生的渗滤液导致了严重的环境问题。本研究的目的是确定蚯蚓堆肥垃圾渗滤液对生物肥料生产的影响。利用蚯蚓将渗滤液中的有机物转化为植物营养物质,促进植物生长和植物生产力。蚯蚓堆肥后期,土壤中硝态氮(N)、磷(P)和钾(K)浓度升高,pH值下降,蚯蚓数量减少。与含有39 (V2)蚯蚓和15 (V3)蚯蚓的蚯蚓相比,含有90条蚯蚓(V1)(约52g)的蚯蚓酶在150 ml渗滤液和798 g土壤的混合物中获得了最高的NPK浓度。说明氮磷钾浓度随蚯蚓添加量的增加而增加。V1增加了53倍……
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