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All Journal JURNAL HUTAN LESTARI Sinergi REKAYASA Chemistry Indonesian Journal of Chemical Research Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Jurnal Teknologi Kimia Unimal Jurnal Ilmu dan Inovasi Fisika Journal of The Indonesian Society of Integrated Chemistry Journal Of Chemical Process Engineering
Wahyuningtyas, Aulia
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Characterization of HCl-activated Water Hyacinth (Eichhornia crassipes) Adsorbent in Removing Lead Ion (Pb2+) from Battery Industry Effluent Utami, Wasistianna; Sari, Dessy Agustina; Wahyuningtyas, Aulia
Indonesian Journal of Chemical Research Vol 12 No 2 (2024): Edition for September 2024
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2024.12-was

Abstract

This study utilizes the adsorption process to reduce the concentration of lead ions in battery industry wastewater by using adsorbents from water hyacinth (Eichhornia crassipes). This research aims to determine the ability of a bioadsorbent activated by a 0.1 M HCl solution to adsorb Pb2+ through FTIR and AAS characterization. The bioadsorbent was contacted into a standardized solution of Pb2+ with varying contact times (viz., 20, 30, 40, 50, 60, 70, 140, 210, and 280 to determine the maximum adsorption). The highest absorption of the Pb2+ in battery industry wastewater took place for 210 minutes. The absorption ability was 94.45%, with 8.1488 ppm as the initial concentration. Then, this study shows that this characterization before the activation of 0.1 M HCl has O-H, C-H, C=O, and C-O ether functional groups. All three identified the presence of cellulose. Post-activation, lignin, and hemicellulose disappeared due to the vibration of the C=O group. However, an increase in the intensity of the vibrational peak at the C-O group indicates the presence of carbon chain linking in cellulose. Finally, after contact with battery industry effluent, bending vibrations were lost because the H atoms in the functional groups had been substituted with Pb2+.
Pembuatan Hidrogel Berbasis Carboxymethyl Cellulose (CMC) dan Pektin sebagai Adsorben Logam Cu dengan Metode Freeze-Thaw Dewi, Nurazizah Melani; Maelan, Nabilla Maharani; Andini, Sri; Perdani, Meka Saima; Wahyuningtyas, Aulia
Jurnal Pengendalian Pencemaran Lingkungan (JPPL) Vol. 6 No. 2 (2024): JPPL, September 2024
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/jppl.v6i2.2412

Abstract

Pencemaran air merupakan salah satu masalah global yang serius disebabkan oleh meningkatnya industrialisasi dan urbanisasi. Logam berat Cu menjadi salah satu senyawa berbahaya penyebab pencemaran air karena memiliki efek racun bagi manusia sehingga dapat mengakibatkan keterbelakangan mental, anemia, hipertensi, dan lain-lain. Penyisihan logam Cu dalam air dapat dilakukan menggunakan adsorben hidrogel berbasis CMC dan Pektin. Hidrogel merupakan komposit polimer hidrofilik dengan jaringan tiga dimensi (3D) yang terdefinisi dengan baik secara fisik dan memiliki gugus fungsi yang responsif secara kimia, yang memungkinkan hidrogel dengan mudah menangkap ion logam tanpa larut. Hidrogel yang disintesis melalui metode Freeze-Thaw memiliki karakteristik elastis yang lebih besar. Sifat adsorpsi diselidiki oleh dua model isoterm dan lima model kinetik. Analisis FTIR membuktikan adanya gugus –OH terdeteksi bebas akibat dari interaksi antara CMC dan pektin, gugus COOH yang mempunyai kemampuan paling tinggi dalam mengikat logam, serta gugus lainnya yaitu C=O, C-O, dan C-O-C. Analisis BET menunjukkan bahwa hidrogel memiliki luas permukaan 1,685 m²/g dan tergolong pada grafik isoterm tipe 1 mengacu pada dominasi mikropori pada suatu bahan atau bahan dengan kandungan mesopori yang dekat dengan mikropori. Kondisi optimum dalam proses adsorpsi yaitu pada konsentrasi 223 ppm, menggunakan model isoterm Langmuir dengan efisiensi adsorpsi sebesar 20,84%. Kapasitas adsorpsi paling tinggi pada konsentrasi 74 ppm yang terjadi di menit 120, menggunakan model kinetika Pseudo Orde 2 dengan efisiensi penyerapan sebesar 85,07 %.
Synthesis Of CMC Pectin Hydrogel (1:2) Using the Freeze-Thaw Method and Its Benefit as An Adsorbent Andini, Sri; Maelan, Nabilla Maharani; Dewi, Nurazizah Melani; Perdani, Meka Saima; Wahyuningtyas, Aulia
Journal of The Indonesian Society of Integrated Chemistry Vol. 16 No. 1 (2024): Journal of The Indonesian Society of Integrated Chemistry
Publisher : Pendidikan Kimia FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jisic.v16i1.34375

Abstract

Research has been conducted on the manufacture of hydrogels from CMC and Pectin (1:2), which can be applied as an adsorbent. The Citarum River is included in the category of the most polluted river in the world, because it contains chemicals that can reduce water quality. One of the pollutants is the Cu2+ metal, precisely at the entrance point of the Citarum river which exceeds the threshold. Cu2+ metal is not biodegradable and can accumulate in the human body, which causes severe health problemss. Metal Cu2+ can cause toxic effects on fish body tissues that can induce the production of Reactive Oxygen Species (ROS). CMC and pectin are organic materials that are used as hydrogels to absorb Cu2+ metal. Hydrogel CMC/Pectin is analyzed using FTIR by having groups O-H, C=O, C-H, OH bending, COOH streatching vibration and C-O-C. The result from BET is that the hydrogel has a surface area of 3.706 m²/g and is classified as a type 1 isotherm graph, and has small pores. The optimum condition of the adsorption process occurs at a concentration of 260 ppm, using the Langmuir isotherm model and has an adsorption capacity of 19.76 mg/g with an absorption efficiency of 68.60%.).
Effective Lead Ions (Pb2+) Mitigation in Battery Industry Wastewater via NaOH-Activated Water Hyacinth (Eichhornia crassipes) Hibatulwafi, Chintya Mahjati; Sari, Dessy Agustina; Wahyuningtyas, Aulia
Rekayasa Vol 17, No 3: Desember, 2024
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v17i3.26083

Abstract

Lead, which is one of the most important heavy metals, is a worldwide toxic pollutant. Adsorption is one of the methods used to study the removal of heavy metal ions from solutions, which encourages us to study the reduction of Pb2+ concentrations in wastewater from the battery factory in this study. The best conditions for adsorption were found using a bioadsorbent called 0.5 M NaOH-activated water hyacinth. This was studied using FTIR to identify the plant. This research conducted adsorption tests on a 20 ppm Pb2+ standard solution, varying the contact times to 20, 30, 40, 50, 60, 70, 140, 210, and 280 minutes. At the contact time of 140 minutes, the Pb2+ concentration reduced to 0.1558 ppm with a 98.0881% adsorption efficiency. Before the bioadsorbent treatment, the FTIR analysis of O-H, C-H, C=C, and C-O functional groups showed that cellulose was present. Activation eliminates the C=C peak and reduces the intensity of the O-H peak. This shows that the lignin and hemicellulose chains are breaking down. When the bioadsorbent binds to Pb2+, the vibrational frequencies of the C-H and C-O groups change, which shows that it works. The results show that the water hyacinth bioadsorbent activated by NaOH is a good alternative material for dealing with Pb2+ waste, which lowers the amount of lead in industrial waste water by a large amount.
PEMANFAATAN DAUN JATI MUDA DAN SABUT KELAPA SEBAGAI PEWARNA ALAMI KAIN KATUN DENGAN FIKSATOR AIR JERUK NIPIS Anwari, Luluatun; Fahriani, Vera Pangni; Wahyuningtyas, Aulia
JURNAL HUTAN LESTARI Vol 12, No 2 (2024): JURNAL HUTAN LESTARI
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jhl.v12i2.76263

Abstract

Indonesia has the variety of plants that have the potential to provide natural dyes to textiles. One of them is the young leaves of teak tress (Tectona grandis) which contain anthocyanin dye. Coconut fiber waste is also used as a natural dye because it contains tanin dye. Many studies have been carried out on young teak leaves and coconut fiber in fabric dyeing. This research creates a new idea that uses both as natural dyes by soaking coconut fiber in young teak leaf extract. Extraction of young teak leaves is carried out by boiling with a vlot of 1 kg of material / 10 L of solvent at a temperature of 100 °C for 30 minutes. Then the young teak leaf extract is added with coconut fiber and left for 24 hours and 48 hours, until a natural dye solution is obtained. The fabric is dipped in the dye for 5 x 20 minutes. Next, the fabric is dried by air-drying and fixation is carried out with lime juice to bind the dye that has been absorbed into the fabric fibers. The results of this research show that soaking coconut fiber for 24 hours and 48 hours in young teak leaf extract can provide a brighter fabric color intensity, as well as adding lime juice fixator. This research shows that soaking coconut fiber in young teak leaf extract can provide a brighter fabric color intensity, likewise with lime juice fixator. In terms of fabric colour fastness to soap washing, the lime juice fixator gave a good average score (4), one level higher that without fixation which got a fairly good average score (3-4).Keywords: coconut fiber, lime juice fixator, natural dye, young teak leaves.AbstrakIndonesia memiliki ragam tumbuhan yang berpotensi memberikan zat warna alami pada tekstil. Salah satunya adalah daun muda dari pohon jati yang mengandung zat warna antosianin. Limbah sabut kelapa juga dimanfaatkan sebagai pewarna alami karena mengandung zat warna tanin. Daun jati muda dan sabut kelapa sudah banyak dilakukan penelitian dalam pewarnaan kain. Penelitian ini membuat gagasan baru yang memanfaatkan keduanya sebagai pewarna alami dengan cara perendaman sabut kelapa dalam ekstrak daun jati muda. Ekstraksi daun jati muda dilakukan dengan cara perebusan dengan plot 1 kg bahan / 10 L pelarut pada suhu 100 °C selama 30 menit. Kemudian ekstrak daun jati muda ditambahkan dengan sabut kelapa dan didiamkan selama 24 jam dan 48 jam, hingga diperoleh larutan pewarna alami. Kain dicelupkan ke dalam pewarna selama 5 x 20 menit. Selanjutnya kain dikeringkan dengan cara diangin-anginkan dan dilakukan fiksasi dengan air jeruk nipis untuk mengikat zat warna yang telah terserap dalam serat kain. Hasil penelitian menunjukkan bahwa perendaman sabut kelapa selama 24 jam dan 48 jam dalam ekstrak daun jati muda dapat memberikan intensitas warna kain yang semakin terang, begitu juga dengan penambahan fiksator air jeruk nipis. Dalam segi tahan luntur warna kain terhadap pencucian sabun, fiksator air jeruk nipis memberikan nilai rata-rata baik (4), satu tingkat lebih tinggi daripada tanpa fiksasi yang memperoleh nilai rata-rata cukup baik (3-4).Kata kunci: sabut kelapa, fiksator air jeruk nipis, pewarna alami, daun jati muda,  
Performance of HNO3-Activated Water Hyacinth-Eichhornia crassipes Bioadsorbent in Adsorbing Lead Metal Ions (Pb2+) in Battery Industry Wastewater Discharge Aldiansyah, Wildan; Sari, Dessy Agustina; Wahyuningtyas, Aulia
Journal of Chemical Process Engineering Vol. 8 No. 2 (2023): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v8i2.668

Abstract

Elemental lead is one of the pollutants generated from batteries. To overcome this problem, technologies such as the use of bioadsorbents have been developed to reduce heavy metal content in wastewater. This study aims to determine the adsorption of lead metal ions (Pb2+) through the use of a water hyacinth (Eichhornia crassipe) bioadsorbent activated with nitric acid (HNO3). Another objective is to obtain the optimum adsorption time on battery industry waste discharges. Post-treatment characterization using FT-IR. Contact time variations (20, 30, 40, 50, 60, 70, 140, 210, and 280 minutes) were used to carry out the lead metal adsorption process on a standard solution of metal ions (Pb2+), 20 ppm. The results showed that the optimum contact time was 210 minutes. This achievement was used as the contact time for reducing the levels of Pb2+ metal ions. The quantity of the remaining Pb2+ metal ion content was 0.4184 ppm. Indirectly, the bioadsorbent performance was 94.8655%. Characterization through FT-IR equipment before activation of water hyacinth bioadsorbent gave results of O-H, C-H, C=O, and C-HO functional groups. These findings indicated the presence of lignin, hemicellulose, and cellulose compounds in the sample before activation. Then, the involvement of 1 N HNO3 solution (as an activator) resulted in a decrease in the quantity of C=O and C-OH functional groups. The process of applying the solution was able to break a number of chains between lignin and hemicellulose. After the adsorption process was given, the waste left the vibrations of O-H, C-H, and ≡C-H groups at wave numbers shifted in a smaller direction. This can occur due to changes in functional groups that have bound metal ions first.
PENGARUH WAKTU PERENDAMAN SABUT KELAPA DALAM EKSTRAK PEWARNA ALAMI KAYU SECANG (CAESALPINA SAPPAN LINN) TERHADAP TINGKAT INTESITAS WARNA DAN KELUNTURAN WARNA PADA KAIN KATUN DENGAN FIKSATOR KAPUR TOHOR (CaO) Alya, Neng Via Nurjanahtul; Fahriani, Vera Pangni; Wahyuningtyas, Aulia
Jurnal Teknologi Kimia Unimal Vol. 13 No. 2 (2024): Jurnal Teknologi Kimia Unimal - Nopember 2024
Publisher : Chemical Engineering Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v13i2.18778

Abstract

Kayu secang (Caesalpinia sappan linn) telah banyak digunakan untuk mewarnai kain, salah satunya kain kapas. Penelitian ini bertujuan untuk: (1) mengetahui pengaruh waktu perendaman sabut kelapa dengan kayu Secang (Caesalpinia sappan linn) terhadap intensitas warna kain kapas. (2) mengetahui pengaruh waktu perendaman sabut kelapa dengan kayu Secang (Caesalpinia sappan linn) terhadap kelunturan warna kain kapas setelah pencucian sabun. (3) menentukan pengaruh kapur tohor (CaO) sebagai fiksator terhadap tingkat intensitas warna kain (4) menentukan pengaruh kapur tohor (CaO) sebagai fiksator untuk tingkat kelunturan warna pada kain kapas setelah pencucian sabun. Hasil penelitian menunjukkan bahwa uji intensitas warna paling gelap menggunakan fiksator kapur, tanpa merendam sabut kelapa mendapat nilai %R sebesar 3,8. Nilai uji tahan luntur warna tanpa merendam sabut kelapa pada sabun cuci menghasilkan nilai rata-rata 4 yang berada dalam kategori baik. Sementara itu, dengan merendam sabut kelapa, tahan luntur warna sabun cuci menghasilkan nilai rata-rata 4 dalam kategori baik. Fiksator kapur tohor (CaO) mempengaruhi tingkat intensitas warna, di mana perlakuan dengan fiksator kapur tohor (CaO) menghasilkan warna yang lebih gelap. Untuk tahan luntur warna pada sabun cuci dengan fiksator kapur tohor (CaO) dan tanpa perlakuan fixator kapur tohor (CaO) tidak dapat berubah dan menghasilkan nilai yang sama, dimana fixator kapur tohor (CaO) dapat mempertahankan nilai tahan luntur warna pewarna alami yang telah diserap kain.
Production of HCl Activated Carbon From Rice Husk Waste Alwardah, Chairunnisa; Kusuma, Daffa Meifan; Bagastama, Bima; Yuda, Dimas; Wahyuningtyas, Aulia; Aeni, Alfieta Rohmaful
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 9, No 2 (2024): EDISI SEPTEMBER 2024
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v9i2.6102

Abstract

Rice husks are agricultural waste whose utilization is not optimal because the waste is usually only burned. Agricultural waste that is burned will harm the environment. Chemical contents such as cellulose and lignin in rice husks can be used to make active carbon. This research aims to determine the optimum operating conditions for producing carbon, obtain information regarding functional groups and changes in pore surface area on carbon before and after activation, and determine the effect of chemical activator HCl on the carbon produced. Rice husks were carbonized using a furnace at temperatures of 200°C, 250°C, and 300°C for 30, 60, and 120 minutes, followed by chemical activation using HCl for 12, 24, and 36 hours. The research results showed that the carbonization variation of 300°C at 120 minutes was closest to SNI standards: water content of 3.91%, ash content of 14.63%, volatile content of 20.01%, and fixed carbon content of 65.36%. Activation of HCl causes the appearance of carboxylic acids. Chemical activation of HCl for 12 hours resulted in proximate content that was close to the SNI 06-3730-1995 standard and resulted in the husk carbon having a larger pore surface area, namely 141,369 m2/g, compared with the pore surface area of the husk carbon before activation was 118,083 m2/g.
Characterization of Eichhornia crassipes bio-adsorbent activated by H3PO4 for the removal of lead ion (Pb2+) from wastewater of battery industry Erlangga, Reza; Sari, Dessy Agustina; Wahyuningtyas, Aulia
SINERGI Vol 29, No 2 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.2.002

Abstract

Lead ion (Pb2+) contamination from battery industry wastewater affects significant environmental and health risks. This study explored the use of H3PO4-activated water hyacinth (WH) bio-adsorbent as an effective solution for removing Pb2+. The WH bio-adsorbent was prepared by activating dried water hyacinth stems with 1.2 M H3PO4, enhancing adsorption properties. SEM-EDX analysis revealed significant morphological changes, with increased porosity and oxygen-containing functional groups (O-H, C-O-P), which improved adsorption capacity. Adsorption kinetics followed a pseudo-second-order model (R2 = 0.99981), indicating that chemisorption dominated the Pb2+ removal process. Adsorption isotherms firmly fit the Langmuir model (R2 = 0.96), confirming monolayer adsorption on a homogeneous surface. The effect of pH was also investigated, with maximum adsorption efficiency (96.928%) observed at pH 7. FTIR analysis showed changes in functional groups before and after adsorption, confirming the ion exchange mechanism between Pb2+ and the activated bio-adsorbent. The findings suggest that H3PO4 activation increases the surface area and raises the chemical activity of WH, providing new insights into the dual mechanism of physical and chemical modifications for lead removal. This study addresses a critical gap in optimizing adsorbents for heavy metal removal, demonstrating the potential of H3PO4-activated WH for industrial wastewater treatment.
Evaluasi Kinerja Cooler #1533 Pada Unit Distilasi #1500 PT. X Ayu, Dinda Laras; Wahyuningtyas, Aulia
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 11, No 1 (2025): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v11i1.11384

Abstract

PT. X is a company that produces the first Hydrogen Peroxide (H2O2) in Indonesia. The raw materials used in producing hydrogen peroxide (H2O2) at PT X are hydrogen (H2), oxygen (O2), water (H₂O) and supporting raw materials, namely WS (working solution), catalyst, stabilizer and ethylene. In the process of making hydrogen peroxide there are many stages in order to get the results on demand. This certainly requires supporting tools in the process such as coolers. The special task carried out is “Evaluation of Cooler #1533 Performance at Distillation Unit #1500 PT. X. Based on the calculation, the Rd value and %heat efficiency for 5 days tend to fluctuate. The Rd value ranges from 0.00094832 btu/hr.ft2.ᵒF to 0.002121257 btu/hr.ft2 .ᵒF, while the heat efficiency value ranges from 48% to 51%. The HE evaluation results on the 31st have the highest Rd value of 0.00212157 btu/hr.ft2 .ᵒF) so that the resulting heat efficiency value is 50%. While the HE evaluation results on the 28th have the lowest Rd value of 0.00094832 (btu/hr.ft2.ᵒF) so that it has the highest efficiency of 51%. The overall head coefficient (Uc) value is greater than the design overall coefficient (Ud) which indicates that the heat transfer in a clean state is higher than in a dirty state, so it can be said that cooler #1533 is still in a state worth using. The ΔP value for the shell has a value of 0.086605283 Psi and the ΔP value on the tube is 0.007 Psi range. This value is still below the standard value allowed, which is 10 Psi.
Co-Authors Aeni, Alfieta Rohmaful Aldiansyah, Wildan Alwardah, Chairunnisa Alya, Neng Via Nurjanahtul Andini, Sri Anwari, Luluatun Ayu, Dinda Laras Bagastama, Bima Dessy Agustina Sari Dewi, Nurazizah Melani Erlangga, Reza Hibatulwafi, Chintya Mahjati Kusuma, Daffa Meifan Maelan, Nabilla Maharani Perdani, Meka Saima Rahmat Hidayat Teguh Pambudi Utami, Wasistianna Vera Pangni Fahriani Yuda, Dimas YULIASARI, FITRI