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All Journal JURNAL KESEHATAN LINGKUNGAN: Jurnal dan Aplikasi Teknik Kesehatan Lingkungan THE JOURNAL OF MUHAMMADIYAH MEDICAL LABORATORY TECHNOLOGIST Meditory : The Journal of Medical Laboratory Jurnal Kesehatan Terpadu (Integrated Health Journal) Health Information : Jurnal Penelitian Malahayati International Journal of Nursing and Health Science Journal of Nursing and Public Health (JNPH) MAHESA : Malahayati Health Student Journal EJOIN : Jurnal Pengabdian Masyarakat Jurnal Teknologi Lingkungan
Ullya Rahmawati
Poltekkes Kemenkes Yogyakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences

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Journal : Jurnal Teknologi Lingkungan

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Processing Tofu Liquid Waste into Liquid Organic Fertilizer With the Addition of Lamtoro Leaves as an Effort Prevention of Environmental Pollution Mualim; Ganefati, Sri Puji; Jubaidi; Marwanto, Andriana; Rahmawati, Ullya
Jurnal Teknologi Lingkungan Vol. 26 No. 1 (2025)
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jtl.2025.5801

Abstract

Adding lamtoro leaves (Leucaena leucocephala) in the wastewater treatment of tofu into liquid organic fertilizer (LOF) is one of the efforts to protect the environment. This study investigated the effect of adding lamtoro leaves on the nutrient content, specifically nitrogen, phosphorus, potassium (NPK), and carbon, of LOF derived from tofu industry waste in Bengkulu, Indonesia. Tofu wastewater contains high levels of BOD, COD, and gases such as oxygen (O₂), hydrogen sulfide (H₂S), carbon dioxide (CO₂), and ammonia (NH₃), exceeding environmental quality standards. Lamtoro leaves contain 3.84% nitrogen, 0.2% phosphorus, 2.06% potassium, 24.7% protein, and 53.71% carbohydrates, making them a promising additive to enhance LOF's NPK and carbon content. This study employed a quasi-experimental design using a pre-post and control group format. Data were statistically analyzed using the Kruskal-Wallis test. The statistical analysis showed that the addition of lamtoro leaves significantly increased the levels of nitrogen (α = 0.049), potassium (α = 0.044), and carbon (α = 0.019). At the same time, the change in phosphorus content was not statistically significant (α = 0.136). These findings indicate that incorporating lamtoro leaves improves soil nutrients and provides natural plant nutrition, enhancing soil quality and carrying capacity, contributing to ecosystem protection, environmental pollution prevention, and public health improvement.
Co-Authors Adeko, Riang Aeni, Ajeng Puspa Ali, Haidina Ali, Haidina Andriana Marwanto Anik Nuryati, Anik Atika Hendryani Bambang Supriyanta, Bambang Bathari, Rosalia Rina Fardhiasih Dwi Astuti Gazali, M Gustina, Mely HERDIANI, FADILA Ismi, Ramadaniati Khoirul Kasiyati, Menik KURNIAWATI, RIMA Martha Atik Martsiningsih Martsiningsih, Marta Atik Martsiningsih, Martha Atik Mely Gustina Menik Kasiyati MIRZA, RAMA Mualim Mualim . Muji Rahayu Musyafaah, Novita Siti NINGRUM, UMI RAHMAWATI Pudyastuti, Rita Rena RR. Ella Evrita Hestiandari Sardjito Eko Windarso, Sardjito Eko Sistiyono Sistiyono, Sistiyono Siti Nuryani, Siti Sri Mulyati Sri Puji Ganefati Sri Sulpha Siregar Sujono Sujono Sujono Sujono, Sujono Suyana Suyana, Suyana Wahyu Widyantoro Windarso, Sarjito Eko Wiwit Aditama YANA VANIA FARADILA Zolendo, Nano Setiawan Zulfikar Husni Faruq