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Detection of Pb(II) and Cr(III) Using Dy(III) Ion with Pyrazoline Derivatives Ligand Syahputri, Yulian; Sutanto; M. Daud Mahmudin; Mohammad Rommy Izha Ramadhan
Sains Natural: Journal of Biology and Chemistry Vol. 14 No. 3 (2024): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v14i3.733

Exposure to heavy metal ions Pb2+ and Cr3+ in Indonesia is getting more attention, especially in various industries and transportation. The sensor complex compound Dy3+ with fluorescence-based pyrazoline-derived ligands (fluorosensor) has the potential to detect heavy metal ions Pb2+ and Cr2+. This research was initiated by synthesizing the pyrazoline derivative ligand and then reacting it with Dy3+ metal ion. The formed Dy3+ complex compounds was then characterized using spectroscopic methods. The results of scanning complex compounds using a UV-Vis spectrophotometer obtained two maximum wavelengths namely at 255 and 359 nm are indicating the presence of a transition type n→π* and π→π*. The results of fluorescence spectrophotometer analysis obtained maximum fluorescence intensity of Dy3+ complex compound was in the wavelength at 370 nm with fluorescence intensity of 4273 a.u. Fluorescence based sensor studies of the Dy complex when Pb2+ and Cr3+ metal ions were added showed changes in fluorescence intensity so that the fluorosensor type was obtained for the Dy3+ metal ion complex compound with Pb2+ and Cr3+, namely "turn-on-off" and "turn-off" respectively.

Combination Technique of AOP-Fenton and Photocatalysisi Using TiO2/Zeolit Coal Fly Ash Nanocomposite for Laboratory Waste Water Jati Kusumawardani, Linda; Syahputri, Yulian; Agel Figo Alfarosi
Sains Natural: Journal of Biology and Chemistry Vol. 15 No. 2 (2025): Sains Natural
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/jsn.v15i2.781

The increase in student practical activities will raise the amount of liquid waste generated from practical and research activities in higher education laboratories. The liquid waste must be specially treated before being discharged into water bodies. An alternative for laboratory waste treatment is the AOP method, specifically the Fenton process and photocatalysis. This study aims to determine the final results of laboratory liquid waste treatment using the AOP Fenton process and photocatalysis with TiO2/Coal Zeolite nanocomposite, testing parameters such as COD, BOD, TSS, and TDS. The results of waste treatment using the AOP-Fenton technique showed an increase in efficiency in reducing the values of the four parameters: COD 92.8%; BOD 92.6%; TSS 62.30%; and TDS 37.6%. The treatment process continued with photocatalysis under optimum conditions of pH 4, catalyst dose of 0.8 grams, and radiation time of 180 minutes, showing an increase in efficiency for the four parameters: COD 97.05%; BOD 98.3%; TSS 86.1%; and TDS 81.6%. The final waste analysis results for the four parameters were compared with PERMEN LH No. 5 of 2014. It is concluded that the waste concentration meets the standard quality criteria for category 1 waste.

Synthesis of Complex Compounds of Cr(III) Metal Ions and Their Application as Fluorosensors of Pb(II) and Cu(II) in Laboratory Waste Syahputri, Yulian; Sutanto, Sutanto; Kusumawardani, Linda Jati; Saputra, Muhammad Rizki
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol. 12 No. 1 (2025): June 2025
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v12i1.43967

Indonesia's exposure of lead (Pb) and copper (Cu) heavy metal ions to humans and the environment has received increased attention over the past few decades as a result of the increasing application of heavy metals in various industries and transportation. Complex compounds of Cr3+ sensors with fluorescence-based pyrazoline-derived ligands (fluorosensors) have the potential to detect Pb2+ and Cu2+ heavy metal ions. The purpose of this study is to synthesize complex compounds of Cr3+ ions with pyrazoline-derived ligands and its potential as a fluorescence-based sensor of Pb2+ and Cu2+ heavy metal ions. Complex compounds formed are characterized and fluorosensor study by spectroscopic methods. The results showed that the synthesis of complex compounds was successfully carried out and a brown precipitate with a melting point of 253.2°C was obtained. Based on the results of the characterization of complex compounds of Cr3+ metal ions with pyrazolin-derived ligands using a UV-Vis spectrophotometer, two absorption peaks were obtained at 226 and 370 nm, two peaks indicating the presence of transition types π→π* and n→π*. The fluorescence spectrophotometer results showed two emission peaks, the peak absorption maximum of Cr3+ complex compounds was in the region 491 nm with a fluorescence intensity of 320.40 a.u. The determination of the fluorosensor potential of Cr3+ complex compounds with the addition of Pb2+ and Cu2+ metal ions showed significant changes in fluorescence so that fluorosensor types were obtained for Cr3+ metal ion complex compounds with Pb2+ and Cu2+, namely "turn-on" and "turn-off", respectively.

TiO2/Zeolite Coal Fly Ash Nanocomposite for Photodegradation of Naphthol Blue Black Dye: Optimization and Mechanism under Visible Light Kusumawardani, Linda Jati; Syahputri, Yulian; Apriansyah, Apriansyah; Fathurrahman, Muhammad
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 11, No. 1, May 2025
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v11i1.45036

Naphthol Blue Black (NBB) is a water-insoluble synthetic azo dye with a molecular weight of 616.49 g/mol that requires alkaline treatment for solubility and poses environmental risks by reducing water quality, increasing BOD and COD, and disrupting aquatic ecosystems. The TiO₂/Zeolite Fly Ash nanocomposite represents a promising material for the photocatalytic degradation of NBB. Analysis of the TiO2/zeolite fly ash nanocomposites revealed the presence of Ti-O-Si and Ti-O-Al functional groups, along with a suitable band gap energy value of 2.85 eV for visible light consumption. The average particle size is 62-75 nm, with a relatively high crystallinity of 95.64%. The insertion of TiO2 into the surface of the zeolite changes the size of the catalyst from 62-75 nm to 10 nm and 98.2% crystallinity. An emphasis was placed on the key parameters governing the degradation process. The test results showed that the degree of degradation increases at lower pH, while changes in catalyst dosage and initial dye concentrations do not significantly affect the degradation of NBB. The addition of H2O2 demonstrates the increasing degradation efficiency. The optimum operating process was carried out by adding 1.2 % (v/v) of H2O2, the pH 2, 0.1% (w/v) of catalyst, an initial concentration NBB of 12 mg/l, and irradiating under visible light for 75 minutes. It was a short period to produce the best conditions for degrading 12 mg/l naphthol blue-black, with a degradation efficiency of 99.68%. The rate of photodegradation kinetics had a reaction rate constant of 0.0312 min-1 and was followed a pseudo-first-order Langmuir-Hinshelwood. From the results, it was found that adsorption is an essential factor in the photodegradability of the dye. The linear transform of the Langmuir isotherm curve was further used to determine the characteristic parameters, which included the maximum absorbable dye quantity Qmax=11,8217 mgg-1. LC-MS/MS analysis identified the compounds formed through the photocatalytic degradation of naphthol blue-black dye into lower-molecular-weight molecules, such as benzoic acid, maleic acid, and phenol, which can gradually break down naturally into carbon dioxide and water.

Intensification of catfish cultivation at Pokdakan Baraya in Kotabatu Village, Bogor Regency Hasanah, Uswatun; Kusumawardani, Linda Jati; Syahputri, Yulian; Mulyati, Ade Heri; Widiastuti, Diana; Warnasih, Siti
Jurnal Pengabdian Masyarakat Inovatif Vol. 3 No. 1 (2025): JPMI (Jurnal Pengabdian Masyarakat Inovatif)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jpmi.v3i1.154

Kotabatu Village, located in Bogor District, is home to several Fish Cultivator Groups (Pokdakan), one of which is Pokdakan Baraya, focused on cultivating catfish. Based on a focus group discussion conducted by the Pakuan University Implementation Team, Pokdakan Baraya faces challenges related to low income, high production costs, and the risks involved in traditional fish farming practices. In response, the team proposed the introduction of the Biofloc system for fish cultivation. The service methods included a comprehensive survey to assess the conditions and needs of the target community, followed by focus group discussions (FGD). The next phase involved outreach by the Pakuan University service team, employing knowledge-sharing methods, case studies, and training on the biofloc technology. To evaluate the impact, regular monitoring and evaluation processes were implemented, which included counseling, pond construction, seed distribution, nursery establishment, and intensive catfish rearing using the biofloc system. As a result of the biofloc system’s adoption, pond productivity increased by 1.8%, and the harvest time was reduced by 15 days. Additionally, the knowledge of Pokdakan Baraya members regarding fish cultivation technology grew by 60%, and their income saw an 81% increase from the sale of the catfish. The successful implementation of this system demonstrates significant improvements in the efficiency, productivity, and economic stability of the community.

Intensification of catfish cultivation at Pokdakan Baraya in Kotabatu Village, Bogor Regency Hasanah, Uswatun; Kusumawardani, Linda Jati; Syahputri, Yulian; Mulyati, Ade Heri; Widiastuti, Diana; Warnasih, Siti
Jurnal Pengabdian Masyarakat Inovatif Vol. 3 No. 1 (2025): JPMI (Jurnal Pengabdian Masyarakat Inovatif)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jpmi.v3i1.154

Kotabatu Village, located in Bogor District, is home to several Fish Cultivator Groups (Pokdakan), one of which is Pokdakan Baraya, focused on cultivating catfish. Based on a focus group discussion conducted by the Pakuan University Implementation Team, Pokdakan Baraya faces challenges related to low income, high production costs, and the risks involved in traditional fish farming practices. In response, the team proposed the introduction of the Biofloc system for fish cultivation. The service methods included a comprehensive survey to assess the conditions and needs of the target community, followed by focus group discussions (FGD). The next phase involved outreach by the Pakuan University service team, employing knowledge-sharing methods, case studies, and training on the biofloc technology. To evaluate the impact, regular monitoring and evaluation processes were implemented, which included counseling, pond construction, seed distribution, nursery establishment, and intensive catfish rearing using the biofloc system. As a result of the biofloc system’s adoption, pond productivity increased by 1.8%, and the harvest time was reduced by 15 days. Additionally, the knowledge of Pokdakan Baraya members regarding fish cultivation technology grew by 60%, and their income saw an 81% increase from the sale of the catfish. The successful implementation of this system demonstrates significant improvements in the efficiency, productivity, and economic stability of the community.

Upaya Pengurangan Limbah Kemasan Plastik Air Minum Melalui Kajian Kualitas Keran Air Siap Minum (KASM) di Wilayah Kota Bogor Iryani, Ani; Syahputri, Yulian; Ramadhini, Dania; Purnama, Dicky Budhi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.597

Sales of bottled drinking water (AMDK) increase in line with population growth every year. Based on data from the Indonesian Plastic Industry Association (Inaplas) and BPS, Indonesia produces 64 million tons of waste/year, and 3.2 million tons of plastic waste comes from AMDK. In connection with the community's dependence on consuming AMDK, the government through the Regional Public Company (PERUMDA) Tirta Pakuan created a superior program, namely Tap Water Ready to Drink (KASM). The problem is that many residents do not take advantage of KASM's services. The aim of this research is to compare the quality of AMDK and KASM so that the public can obtain information and increase confidence in the quality, safety and cleanliness of drinking water originating from KASM. This research method includes sampling followed by analysis of physical parameters (color, odor, taste, temperature), chemical (turbidity, TDS, metals, pH, Cl-, F-, NO2-, NO3-, NH3, hardness, CN -, SO42-) and Total microbiology (Coliform, E.coli) based on quality standards PERMENKES 492/2010. KASM samples were taken at 6 points using the SNI 8995:2021 method. The AMDK sample was obtained by purchasing 5 brands of AMDK randomly. Physical, chemical and microbiological parameters were analyzed using the APHA, SNI, US-EPA methods using ICP-OES, UV-Vis spectrophotometer and nephelometer. The results show that all KASM and AMDK samples have met the quality standards of PERMENKES 492/2010. Based on the comparison of analysis results, all AMDK samples had lower quality compared to KASM samples even though other microbiological, chemical and physical parameters were not significantly different.

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