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Journal : Bionature

The Effect of Variation in Light Spectra on the Growth of Chlorella Vulgaris and It is Ability to Decolorize RB5 Ummah, Faizatul; Saefi, Muhammad; Wahyudi, Didik
Bionature Vol. 26 No. 2 (2025): Oktober-Desember 2025
Publisher : Jurusan Biologi Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/6tkngw35

Abstract

Reactive Black 5 (RB5) is an azo dye widely used in the textile industry and improper processing of this dye can harmful to the aquatic environment, including limited light penetration and potential carcinogenic and mutagenic effects on aquatic organisms. Therefore, RB5 in waters needs to be handled seriously, one of which is through bioremediation efforts using Cholera vulgaris. Meanwhile, chlorella growth is highly dependent on various light spectrums. This study aimed to examine the effect of different light spectrums (red, blue, and white) on C. vulgaris cell density-based growth and its ability to decolorate RB5. A completely randomized design with three replications was applied using 30 mg/L RB5 solution, and was conducted for 12 days at laboratoty. Cell density was measured by a hemocytometer, and dye concentration was analyzed using a UV-Vis spectrophotometer. The results showed that blue light produced the highest algal growth, reaching 2.78 × 10⁷ cells/mL on the ninth day. Meanwhile, white light produced the greatest RB5 decolorization, reaching 80% reduction on the last day. These findings highlight the role of different light spectrums in optimizing algal cell density and dye removal efficiency.
Co-Authors A Gani, A A. Gani, A. Gani Afianti, Linda Dwi Afiati, Lely Agung, Rendyansah ahmad yani Aju Tjatur Nugroho Krisnaningsih Alfaruqi, Nuri Thobibatus Shofia Ali Murtadho Anak Agung Istri Sri Wiadnyani Andriani, Disa Anjarani, Ajeng Viona Putri Annisa, Nenden Nur Anwar, Muhamad Syaeful Apita, Desma Hemaliyah Ardani, Edvi Gracia Ardy Prian Nirwana, Ardy Prian Auliantika, Dinda Helsa Azzahro, Yusri Despa Baharudin Baharudin Baharudin Bambang Hermawan Bayyinatul Muchtaromah Budhi, Dono Setya Chairul Amriyah Deden Makbuloh Dian Puspita Sari Dwi Agustina Dwi Gusmalawati Endang Sutariningsih Soetarto Endang Widyastuti Ervin Medianti Fadhila, Zulfa Nur Faizatul Ummah Fakhrul Rozy, Muhammad Fatkurohmah, Diana Fatoni, Ilham Fauzan, Muhammad Chusni Fitriyah Fitriyah Gusmiati, Lutfiana Hasanah Hadiani, Dimas Pratidina Puriastuti Haritzah, Rendha Maulana Hasan, M. Nur Hidayatullah, Rafi Fuzan Ilmi, Zahrobatul Lil Indivia, Imey Tamara Isna Arofatun Nikmah, Isna Arofatun Juwanita, Agnes Kharisma, Viol Dhea Kusuma, Eka Wisnu Leondro, Henny Lia Hapsari M. Dimas Yudi Witjaksono Manshur, umar Mauludyah, Rohmatul Mimi Salmawati Mose, Windi Muhammad Mustofa Muhammad Saefi Mujahidin Ahmad Munandar, Hanozanor Fadli Nawang, Pungky Nisa, Kurnia Khoirun NURUL AZIZAH Oke Anandika Lestari Pratimasari, Diah Prihandini, Peni Wahyu PUDJI ASTUTI Punjungsari, Tyas Nyonita Purwandani, Safitri Putri, Sheli Feliyan Rachman, Rhesma Sylvia Radita, Novia Fitri Rahmawati, Valentina Indah Ramadanti, Isma Salsabila Rodiyati Azrianingsih Ruri Siti Resmisari Rusdi, Nurhidaya Saputra, Dedech Muhammad Sari, Retno Komala sari, Sonya Permata Saroh, Dewi Septiadi, Luhur SEPTIANA SEPTIANA Septiani, Risma Dyah Setya, Adhi Kumoro Setyazi, Gama Stefanus Khrismasagung Trikusumaadi, Stefanus Khrismasagung Susilowati Susilowati SUYONO Suyono Suyono Syafe’I, Imam Syafrudin Syafrudin Syahran Wael Umi Fathonah, Yuliana Umi Hijriyah Valent, Febriana Verawati, Liesta Wasehudin, Wasehudin Widyastuti, Dinda Yuli Arif Tribudi Yusianti Silviani Yusnida, Azma Zahra, Desti