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All Journal Buletin Peternakan JURNAL PETERNAKAN JMM (Jurnal Masyarakat Mandiri) CHEESA: Chemical Engineering Research Articles Walisongo Journal of Chemistry Jurnal Ilmu Peternakan Terapan JPM: JURNAL PENGABDIAN MASYARAKAT Co-Value : Jurnal Ekonomi, Koperasi & Kewirausahaan Berkala Penelitian Teknologi Kulit, Sepatu, dan Produk Kulit Jurnal Teknologi Kimia Mineral
Laili Rachmawati
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Transportation Veterinary Other

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Utilization Of Chlorella Pyrenoidosa As A Phytoremediator For Tannery Waste Adetya, Nais Pinta; Arifin, Uma Fadzilia; Anggriyani, Emiliana; Rachmawati, Laili
Walisongo Journal of Chemistry Vol. 7 No. 1 (2024): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology UIN Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v7i1.20749

Abstract

This study aims to analyze the effect of phytoremediation on the bioremoval of COD, ammonia, and Cr (VI) from tannery wastewater and examine its effect on the growth of Chlorella populations. The research method consisted of two stages: first, preparation of liquid waste media. The second is culturing pure cultures followed by microalgae cultivation using leather tanning liquid waste media with a concentration variation of 0%, 10%, 20%, and 30% v/v. Filtrate samples after harvest were analyzed for COD, ammonia, and Cr (VI). The results obtained in this study show that Chlorella can grow in tanning waste media. The highest exponential phase occurs at a concentration of 20% with a growth rate of 0.557. Tannery liquid waste contains inorganic minerals utilized by Chlorella pyrenoidosa cells for growth. Cultivation of Chlorella pyrenoidosa can reduce leather tanning liquid waste parameters, namely COD, ammonia, and Cr (VI).
Physical and chemical characteristics of tanned chicken feet skin from freshly slaughtered and dead on arrival chickens Amalia, Dian Nur; Laili Rachmawati; Udkhiyati, Mustafidah; Rosiati, Nur Mutia; Adetya, Nais Pinta; Anggriyani, Emiliana
Jurnal Ilmu Peternakan Terapan Vol 9 No 2 (2026): Jurnal Ilmu Peternakan Terapan
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jipt.v9i2.6856

Abstract

Dead on arrival (DOA) animals, particularly poultry, refer to animals that die during the pre-slaughter phase and are generally considered waste, despite their potential as raw materials for leather production. However, scientific information regarding the quality of leather produced from DOA chicken feet skin remains limited. Therefore, this study aimed to evaluate the feasibility of utilizing DOA chicken feet skin by comparing its physical and chemical properties with those of fresh chicken feet skin after tanning. Chicken feet skin from both sources was processed through beamhouse operations, tanning, post-tanning, and finishing stages before quality evaluation. Physical properties analyzed included thickness, softness, shrinkage temperature, elasticity, tensile strength, tear strength, and seam strength, while chemical properties included pH, moisture content, and oil/fat content. Differences between treatments were analyzed using an independent samples t-test for parameters with sufficient replicates. The results showed that thickness, softness, and shrinkage temperature were not significantly different (P>0.05). Fresh and DOA leather showed comparable seam strength values of 602.52 N/cm and 600.23 N/cm, respectively. Chemical properties were also similar, with pH of 4, moisture contents of 15.16% and 13.82%, and oil/fat contents of 14.94% and 14.05%. Overall, DOA chicken feet skin showed comparable characteristics and potential for leather production.
Co-Authors Adetya, Nais Pinta Ajie, Baskoro AMALIA, DIAN NUR Arya Prastyawan Baskoro Ajie Emiliana Anggriyani Fadzkurisma Rabbika Heru Budi Susanto, Heru Budi Ismaya (Ismaya) Juhana, Swatika Maria Sri Wiyanti Mustafidah Udkhiyati Nais Pinta Adetya Nur Mutia Rosiati Prasetyo Hermawan PUDJI ASTUTI Rabbika, Fadzkurisma Ragil Yuliatmo Rahmawati, Atiqa Robbika, Fadzkurisma Rosiati, Nur Mutia Sakuroh, Lilis Supriatna, Yana Achmad Swatika Juhana Tria Novianti Uma Fadzilia Arifin, Uma Fadzilia Yuliatmo, Ragil