The disposal of fluorescent lamps of industries of the metropolitan region of Belo Horizonte - MG

Leopoldino, Carolina Calazans Lopes; Mendonça, Fabrício Molica de; Siqueira, Paulo Henrique de Lima; Borba, Érika Loureiro

doi:10.1016/j.jclepro.2019.06.192

Cited by 10 publications

(5 citation statements)

References 19 publications

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“…Saat ini pencahayaan artifisial yang secara umum sudah digunakan dalam kultur mikroalga adalah cahaya artifisial dari lampu fluoresens (lampu neon) (Zielinska et al, 2017;Leopoldino et al, 2019). Lampu neon fluoresens menghasilkan cahaya polikromatis yang terdiri atas beberapa panjang gelombang.…”

Section: Pendahuluanunclassified

Pertumbuhan, Kadar Pigmen dan Aktivitas Antioksidan Spirulina platensis pada Kultur dengan Perbedaan Warna Pencahayaan Leds

2022

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Antioksidan diperlukan tubuh untuk melindungi kesehatan kulit kita. Salah satu sumber antioksidan adalah mikroalga Spirulina sp. Permasalahan pemanfaatan spirulina adalah diperlukan teknologi kultur yang tepat untuk menghasilkan aktivitas antioksidan tinggi. Tujuan penelitian adalah melakukan optimasi pencahayaan (warna cahaya) dalam kultur spirulina untuk mendapatkan pertumbuhan terbaik, kadar pigmen dan aktivitas antioksidan tertinggi. Penelitian menggunakan metode eksperimen laboratoris dengan 5 perlakuan yaitu pemberian pencahaaan dengan LED warna biru, hijau, merah, putih dan lampu TL (fluoresens). Perlakuan perbedaan warna pencahayaan dalam kultur berpengaruh nyata terhadap pertumbuhan, kadar pigmen dan aktivitas antioksidan. Perlakuan terbaik adalah pemberian pencahayaan LED merah yaitu Spirulina platensis memiliki pertumbuhan mutlak sebesar 1,602 d x 104 sel/ml, laju pertumbuhan 0,108 hari-1, jumlah generasi 2,028, waktu generasi 6,416 hari, yield 9,649 gr/gr, dan produktifitas 24,740 gr/L.hari. Ekstrak spirulina mengandung klorofil a sebesar 10,153 mg/L, klorofil b sebesar 4,744 mg/L, total klorofil 16,053 mg/L, karotenoid 5,893 mg/L. selain itu juga memiliki kandungan pigmen fikobiliprotein yaitu fikosianin 0,055 mg/L, alofikosianin 0,037 mg/L dan fikoeritrin 0,218 mg/L. eksrak spirulina dari hasil kultur dengan pencahayaan LED merah memiliki aktivitas antioksidan dengan nilai IC50 sebesar 105,4 ppm. Aktivitas antioksidan dari ekstrak sepirulina di karenakan adanya kandungan senyawa fitokimia dan pigmen. Antioxidants are needed by the body to protect the health of our skin. One source of antioxidants is the microalgae spirulina sp. The problem of using spirulina is that appropriate culture technology is needed to produce high antioxidant activity. The aim of the research was to optimize lighting (light color) in spirulina culture to get the best growth, highest pigment content and antioxidant activity. The study used a laboratory experimental method with 5 treatments, lighting with blue, green, red, white LEDs and fluorescent lights. The treatment of different lighting colors in culture had a significant effect on growth, pigment levels and antioxidant activity. The best treatment was the provision of red LED lighting, Spirulina platensis which had absolute growth of 1.602 d x 104 cells/ml, growth rate of 0.108 day-1 , number of generations 2,028, generation time of 6.416 days, yield of 9.649 gr/gr, and productivity of 24.740 gr/L.day. Spirulina extract contains chlorophyll a of 10,153 mg/L, chlorophyll b of 4,744 mg/L, total chlorophyll 16,053 mg/L, carotenoids 5,893 mg/L. In addition, it also contains phycobiliprotein pigments, phycocyanin 0.055 mg/L, allophycocyanin 0.037 mg/L and phycoerythrin 0.218 mg/L. Spirulina extract from culture results with red LED lighting has antioxidant activity with an IC50 value of 105.4 ppm. The antioxidant activity of the sepirulina extract is due to the presence of phytochemical compounds and pigments.

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Section: Pendahuluanunclassified

Pertumbuhan, Kadar Pigmen dan Aktivitas Antioksidan Spirulina platensis pada Kultur dengan Perbedaan Warna Pencahayaan Leds

2022

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“…Significant quantities of WEEE end up outside of appropriate collection and treatment pathways and are mixed with residual waste, plastics recycling, metal scrap, illegally dumped or burned (European Commission, DG and DIGITALEUROPE, 2017;Forti et al, 2020). The rate of loss of lamps and lighting equipment from entering compliant and appropriate depollution and treatment has raised alarms in many studies and is reflected in literature (Culver et al, 2021;Hu et al, 2018;Lopes Leopoldino et al, 2019). The International Labour Organization note sorting and treatment of e-waste as a priority sector in the protection of workers from mercury exposure (International Labour Organization, 2022).…”

Section: Introductionmentioning

confidence: 99%

Uncaptured mercury lost to the environment from waste electrical and electronic equipment (WEEE) in scrap metal and municipal wastes

Ryan-Fogarty¹,

Baldé²,

Wagner³

et al. 2023

Resources, Conservation and Recycling

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“…LED lamps have radically changed the lighting industry due to, their high luminous efficiency (Madias et al, 2019) and long lifespan. Due to these advantages, it is expected that millions of domestic fluorescent luminaires (Leopoldino C.C.L., et al 2019) will be replaced by LED lamps and eventually will become waste. Consequently, decision makers (Manolis et al, 2019) should take into consideration circular economy aspects, like the possibility of future retrofit solutions (Doulos et al, 2019a(Doulos et al, , 2019b(Doulos et al, , 2019c and of course recycling.…”

Section: Introductionmentioning

confidence: 99%

Estimating the benefits of increasing the recycling rate of lamps from the domestic sector: Methodology, opportunities and case study

et al. 2020

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The disposal of fluorescent lamps of industries of the metropolitan region of Belo Horizonte - MG

Cited by 10 publications

References 19 publications

Pertumbuhan, Kadar Pigmen dan Aktivitas Antioksidan Spirulina platensis pada Kultur dengan Perbedaan Warna Pencahayaan Leds

Pertumbuhan, Kadar Pigmen dan Aktivitas Antioksidan Spirulina platensis pada Kultur dengan Perbedaan Warna Pencahayaan Leds

Uncaptured mercury lost to the environment from waste electrical and electronic equipment (WEEE) in scrap metal and municipal wastes

Estimating the benefits of increasing the recycling rate of lamps from the domestic sector: Methodology, opportunities and case study

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