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All Journal Abditani : Jurnal Pengabdian Masyarakat Helium: Journal of Science and Applied Chemistry Jurnal Pendidikan Kimia Unkhair (JPKU)
Muhammad Fathurrahman
Universitas Pakuan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Materials Science & Nanotechnology Mathematics Other

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Optimization of Adsorption of Eugenol-Silica Gel Composites to Metal Ions Cu (II) Using Box Behnken Method Fitra Rachmalia; Muhammad Fathurrahman; Sutanto Sutanto
Helium: Journal of Science and Applied Chemistry Vol 2, No 1 (2022): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.047 KB) | DOI: 10.33751/helium.v2i1.5483

Abstract

Silica gel can be used as an absorbent so that it can also be used as a process for making eugenol-silica gel composites. This study aims to optimize the adsorption of the eugenol-silica gel composite to Cu (II) metal ions and to determine the maximum absorption capacity and adsorption constant of the Langmuir and Freundlich isotherm model. This research begins with determining the optimization of contact time 10-60 minutes, temperature 20-45 oC and the weight of the adsorbent is carried out in the range of 0.10-0.20 grams in a 50 mL solution and the experimental design of the box Behnken method will determine three variables through (Response Surface Methodology). Furthermore, the determination of Cu levels by preparing 100 ppm Cu mother liquor, making a standard series, and testing with Atomic Absorption Spectroscopy (AAS), and then determination of Langmuir and Freundlich adsorption isotherms. The results showed that the optimum conditions for the adsorption process using Response Surface Methodology (RSM) were at a contact time of 30 minutes, a temperature of 45 oC with an adsorbent weight of 0.10 grams in a 50 mL solution, in Langmuir and Freundlich isothermal adsorption. The adsorption process takes place in two directions (reversible) the values of Kf, b and n are 8331; -5.2224 and -0.4541. The adsorption process takes place in two directions (reversible) the values of Kf, b and n are 8331; -5.2224 and -0.4541. The adsorption process takes place in two directions (reversible) the values of Kf, b and n are 8331; -5.2224 and -0.4541.
PEMBERDAYAAN MASYARAKAT NON-PRODUKTIF MELALUI KETERAMPILAN PEMBUATAN PRODUK SABUN CUCI PIRING DI SMP BINA DAKWAH LEUWILIANG BOGOR Muhammad Fathurrahman; Tri Aminingsih; Usep Suhendar
Jurnal Abditani Vol. 5 No. 2 (2022): Oktober
Publisher : FAKULTAS PERTANIAN UNIVERSITAS ALKHAIRAAT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31970/abditani.v5i2.171

Abstract

Mitra yang terlibat dalam kegiatan Pengabdian pada Masyarakat ini adalah SMP Bina Dakwah Leuwiliang Bogor. SMP Bina Dakwah merupakan suatu lembaga non-profit yang bergerak di bidang pendidikan. Masyarakat kelompok ini kami jadikan sebagai mitra untuk diberikan keterampilan membuat sabun cuci piring dengan harapan keterampilan ini mampu mengangkat masyarakat untuk berkarya dan menjadi masyarakat yang produktif sehingga dapat meningkatkan kesejahteraan ekonomi. Pelaksanaan program ini dilakukan melalui pelatihan keterampilan pembuatan sabun cuci piring untuk skala industri rumah tangga secara detail, kontinyu dan tuntas sampai dihasilkan produk sabun cuci piring dengan kualitas yang baik. Selain itu, dilakukan pelatihan pengemasan dan pelabelan produk sabun cuci piring dalam kemasan. Pelatihan dilanjutkan dengan pembinaan serta pendampingan mitra dalam memulai membuat jaringan pemasaran ke berbagai pihak yang membutuhkan produk sabun cuci piring ini. Jenis luaran yang akan dihasilkan dari program pemberdayaan masyarakat non produktif melalui keterampilan membuat sabun cuci piring ini adalah model pemberdayaan masyarakat, mencakup terbukanya wawasan masyarakat non-produktif mengenai peluang usaha pembuatan sabun cuci piring, menghasilkan tenaga-tenaga terampil, menghasilkan produk sabun cuci piring yang berkualitas baik dan siap untuk dipasarkan dan membuka peluang untuk direkomendasikan menjadi usaha kecil mandiri yang lebih potensial sehingga dapat meningkatkan pendapatan masyarakat yang berimbas pada peningkatan kesejahteraan.
Utilization of Tea Waste Activated by Using Hydrochloric Acid as An Adsorbent for Calcium (II) Ions in Hard Water Meizaristy Ananta Wuryani; Agus Taufiq; Muhammad Fathurrahman
Helium: Journal of Science and Applied Chemistry Vol 3, No 1 (2023): Helium: Journal of Science and Applied Chemistry
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/helium.v3i1.7930

Abstract

Water is an important natural resource for human survival. Groundwater in calcareous soil areas contains high levels of Ca(HCO3)2 and Mg(HCO3)2 salts and will have a negative impact if consumed continuously. In this study, an adsorption method using tea waste (Camellia sinensis) was conducted to reduce the concentration of Ca(II) ions that cause water hardness. Tea waste was activated with 0.1 N HCl for 24 hours. Tea waste was characterized by Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM). Determination of optimum conditions was carried out at pH variations of 4, 6, and 8, with contact times of 30 minutes, 60 minutes and 90 minutes, and adsorbent weights were 0,5 grams, 1 gram, 1.5 grams and 2 grams. Tea waste with the best optimum conditions was tested on Ca(II) solutions of various concentrations from 30, 50, and 70 mg/L respectively to determine the maximum capacity for Ca(II) metal ions and the type of adsorption isotherm. Then applied to well water samples analyzed by Inductively Coupled Plasm (ICP) to determine the capacity of Ca(II) that can be absorbed by each adsorbent. The results showed that to utilize 0.1 N HCl-activated tea waste as an adsorbent for Ca(II) metal ions were optimum at pH 8, with a contact time of 30 minutes and an adsorbent weight of 0.5 grams. The maximum adsorption capacity was obtained at Ca(II) solution concentration of 70 mg/L with an adsorption capacity value of 6.704 mg/g. The adsorption isotherm corresponding to the tea waste adsorbent is the Freundlich isotherm (r2 = 0.9199). The highest absorption of Ca(II) metal ions in well water samples from the concentration of Ca(II) metal ions was 72.7702 mg/L to 4.877 mg/L, with adsorption efficiency of 93.3% and adsorption capacity of 6.7893 mg/g.
Aplikasi Elektrokoagulasi Berulang Pada Pengolahan Limbah Cair Industri Tahu di Kota Bogor Annisa Ramadhanti; Sutanto; Muhammad Fathurrahman
Jurnal Pendidikan Kimia Unkhair (JPKU) Vol 6 No 1 (2026): Jurnal Pendidikan Kimia Unkhair
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/jpku.v6i1.11431

Abstract

Abstrak Berkembanganya industri tahu meningkatkan jumlah limbah cair yang berpotensi menurunkan kualitas perairan jika dibuang tanpa pengolahan. Tujuan dari penelitian ini untuk mengetahui pengaruh pengulangan pada proses elektrokoagulasi dalam menurunkan kadar pencemar hingga memenuhi baku mutu sesuai Peraturan Menteri Lingkungan Hidup Nomor 5 Tahun 2014 Lampiran XVIII tentang Baku Mutu Air Limbah Pengolahan Kedelai. Air limbah tahu akan dilakukan elektrokoagulasi berulang dengan variasi tegangan (20V dan 30V), jarak plat elektroda 4 cm, dan variasi waktu (15, 30, 45, dan 60 menit). Air limbah tahu sebelumnya akan dilakukan karakteristik awal dan akhir setelah proses elektrokoagulasi. Tegangan dan waktu kontak terbaik yang dicapai pada penelitian ini yaitu pada tegangan 20 V selama 60 menit pada tahap pengolahan kedua. Hal tersebut ditunjukkan dengan adanya penurunan nilai COD, TSS dan DHL sedangkan nilai DO dan pH mengalami kenaikan. Pada penelitian ini nilai TSS sudah memenuhi baku mutu walaupun untuk parameter pH dan COD masih belum memenuhi baku mutu namun memberikan hasil yang menunjukkan bahwa kualitas air limbah semakin baik. kata kunci: Limbah Cair Tahu, Elektrokoagulasi Berulang, TSS Abstract The development of the tofu industry has increased the volume of liquid waste, which has the potential to degrade water quality if discharged without treatment. This study aims to determine the effect of repeated electrocoagulation processes in reducing pollutant concentrations to meet the quality standards stipulated in the Regulation of the Minister of Environment Number 5 of 2014, Appendix XVIII, concerning Wastewater Quality Standards for Soybean Processing Activities. Tofu wastewater was treated using repeated electrocoagulation with variations in voltage (20 V and 30 V), electrode plate spacing of 4 cm, and contact time variations (15, 30, 45, and 60 minutes). Initial and final characteristics of the tofu wastewater were analyzed before and after the electrocoagulation process. The optimal voltage and contact time achieved in this study were 20 V for 60 minutes during the second treatment stage. This condition resulted in reductions in COD, TSS, and electrical conductivity (EC), while DO and pH values increased. In this study, the TSS value met the applicable quality standards; although the pH and COD parameters had not yet met the standards, the results indicate an overall improvement in wastewater quality keyword: Tofu Wastewater, Repeated Electrocoagulation, TSS  
Co-Authors Agus Taufiq Annisa Ramadhanti Fitra Rachmalia Meizaristy Ananta Wuryani Sutanto Sutanto Sutanto Tri Aminingsih Usep Suhendar