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All Journal Jurnal Sains & Teknologi Lingkungan IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Inovasi Penelitian
Teguh, Dedi
Jurusan Teknologi Pertanian, Politeknik Negeri Lampung
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Color And COD Degradation of Procion Red Synthetic Dye by Using Fenton-TiO2 Method Dedi Teguh; Tuty Emilia Agustina; Muhammad Faizal
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 3, No 1 (2018): February 2018
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i1.23

Abstract

Nowadays, environmental pollution caused by industrial wastewater is quite apprehensive. Most of textile industries used synthetic dyes. Procion red is one of the synthetic dyes that often used in textile industries and classified as a reactive dye that is difficult to decompose in nature and contain harmful toxins. One of the colored wastewater treatment process is by using Fenton reagent and TiO2 catalyst (Fenton-TiO2) as one of Advanced Oxidation Processes (AOPs). The objective of this research is to treat of procion red synthetic dye by using Fenton-TiO2 method and study the effect of procion red concentration, reaction time and the concentrations of TiO2 catalyst on color and COD degradation. In this experiment, the concentrations of procion red were varied between 150-300 ppm, the concentrations of TiO2 catalyst were varied from 0.05 to 0.4% (w/v) and the reaction time of 5 to 20 minutes. The optimum condition was achieved by using procion red concentration of 150 ppm with TiO2 catalyst concentration of 0.4% and reaction time of 20 minutes, which the maximum color and COD degradation of 98.67% and 92% were achieved respectively. This condition was applied to the real wastewater of textile home industry in Palembang. The color and COD degradation of 59% and 44% were found respectively after 220 minutes of reaction.
IDENTIFIKASI KOMPONEN SENYAWA VOLATIL DALAM CUKA BAMBU (BAMBOO VINEGAR) YANG DIPRODUKSI MELALUI PROSES PIROLISIS DI PT. HANAN ALAM LESTARI (MITRA BINAAN CSR PT. BUKIT ASAM Tbk) Oktaf Rina; Rizka Novi Sesanti; Dedi Teguh; Yeni Ria Wulandari; Hamdani Hamdani; Aang Haryadi
Jurnal Inovasi Penelitian Vol 2 No 6: Nopember 2021
Publisher : Sekolah Tinggi Pariwisata Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47492/jip.v2i6.1011

Abstract

This study aims to identify volatile chemical components in bamboo vinegar (vinegar bamboo) produced by pyrolysis by PT. Hanan Alam Lestari (Guided Partner of PT. Bukit Asam Tbk). The raw material used is bamboo processing waste in the form of bamboo powder and pieces by pyrolysis process at a temperature of 300-450oC. The chemical compounds were analyzed using the Gas chromatography-mass spectroscopy (GC-MS) method at the Laboratory of Research and Development of Forest Products, Bogor. Specifications of tools used to investigate gas or liquid component products using a capillary column (Aglient HP-5MS length 30 m, diameter 250 m, film thickness 0.25 m). By holding the oven temperature at 50°C for 5 minutes, increasing at 5°C/min to 300°C, holding there for 60 minutes and helium as carrier gas. The results of the analysis showed that there were 15 components of volatile compounds and several dominant compounds in bamboo vinegar, namely acetic acid 31.28%; phenol 2-methoxy-guaiocol (12.95%); carbamic acid (11.23%); 2-heptanamine (6.75%) and phenol 4-methoxy-p-cresol (5.56%). The compound components in bamboo vinegar are thought to have antioxidant, antimicrobial and specific color and flavor-forming properties. Several chemical components detected in bamboo vinegar are recommended for use in agriculture as biofungicides and inhibitor compounds.
Determination of Coagulant Dosage and Stirring Time in Laboratory Wastewater Pretreatment Maria Siswi Wijayanti; Tuty Emilia Agustina; Muhammad Hatta Dahlan; Dedi Teguh
Indonesian Journal of Environmental Management and Sustainability Vol. 6 No. 4 (2022): December
Publisher : Research Centre of Inorganic Materials and Complexs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/ijems.2022.6.4.137-142

Abstract

The use of chemicals in practical activities or research in the laboratory will certainly produce wastewater. Wastewater generated from the laboratory is classified as hazardous and/or toxic waste. Based on the substances contained in laboratory wastewater in terms of accumulated amount and a long period of time, wastewater will pollute the environment and will have an impact on living things around it if it is directly discharged into water bodies. The composition of laboratory waste is reactive and dangerous because it contains heavy metals Pb, Fe, and Cu as well as high Chemical Oxygen Demand (COD) and Total Suspended Solid (TSS) so it is difficult to decompose in nature. This study aimed to prepare the laboratory wastewater using the coagulation process as pretreatment. Therefore, this research prioritized the reduction of heavy metal levels of Pb, Fe, and Cu and reduced the content of COD and TSS with Alum as a coagulant. The highest degradation percentage of COD and TSS content occurred at the Coagulation Dose of 80 ppm, namely 99.79% and 99.80% respectively. Meanwhile, the highest degradation percentage of heavy metal levels of Pb, Fe, and Cu as well as the optimum COD and TSS content occurred at a stirring time of 60 minutes respectively, which were 49.48%, 58.96%, 94.09%, 99.97%, and 99.40%. It was concluded that the pretreatment of laboratory wastewater using the coagulation process could reduce the levels of Pb, Fe, and Cu metals, and the content of COD and TSS.
PELATIHAN PEMBUATAN PROCESS FLOW DIAGRAM (PFD) MENGGUNAKAN APLIKASI VISIO DI SMKN 8 BANDAR LAMPUNG Yeni Ria Wulandari; Yeni Variyana; Dedi Teguh; Amelia Sri Rezki; Fadian Farisan Silmi; Dewi Ermaya; Shintawati Shintawati; Andika Wahyu Purnama
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 7, No 1 (2023): March
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v7i1.13512

Abstract

ABSTRAKPengembangan pendidikan Sekolah Menengah Kejuruan (SMK) di Indonesia harus diarahkan untuk beradaptasi dengan dinamika global dan nasional khususnya terhadap Revolusi Industri 4.0. Berdasarkan penerapan Kurikulum Merdeka, program keahlian yang ada di SMK Negeri 8 Bandar Lampung salah satunya adalah Teknik Kimia Industri dengan peserta sebanyak 25 orang. Adapun tujuan dari kegiatan pengabdian kepada masyarakat (PKM) yaitu memberikan pelatihan desain process flow diagram (PFD) menggunakan microsoft visio kepada siswa jurusan teknik kimia di SMKN 8 Bandar Lampung. Pengetahuan, keterampilan, dan pengalaman dalam merancang proses pabrik secara sederhana maupun kompleks sangat diperlukan di dunia industri, khususnya bidang keahlian teknik kimia. Dari hasil pelatihan, seluruh peserta sangat antusias dan dapat menyelesaikan desain PFD hingga selesai serta beberapa siswa aktif bertanya terkait materi yang diberikan. Para peserta dengan persentase 98% menyatakan bahwa adanya peningkatan pengetahuan dan keterampilan terkait pembuatan proses industri fermentasi melalui PFD. Kegiatan ini diharapkan dapat menambah keterampilan siswa jurusan teknik kimia SMKN 8 Bandar Lampung agar siap menjadi sumber daya manusia (SDM) unggul. Kata kunci: PKM; microsoft visio; PFD. ABSTRACTThe development of Vocational High School education in Indonesia must be directed to adapt to global and national dynamics, especially to the Industrial Revolution 4.0. Based on the implementation of the Merdeka Curriculum, one of the expertise programs in SMK Negeri 8 Bandar Lampung is Industrial Chemical Engineering with 25 participants. The purpose of this community service activity (PKM) is to provide process flow diagram (PFD) design training using microsoft visio to students majoring in chemical engineering at SMKN 8 Bandar Lampung. The knowledge, skills, and experience in designing simple and complex plant processes are needed in the industrial world, especially in the field of chemical engineering expertise. From the results of the training, all participants were very enthusiastic and were able to complete the PFD design to completion and some students actively asked questions regarding the material provided. The participants with a percentage of 98% stated there was an increase in knowledge and skills related to making industrial fermentation processes through PFD. This activity is expected to increase the skills of students majoring in chemical engineering at SMKN 8 Bandar Lampung so that they are ready to become excellent human resources (HR). Keywords: PKM; microsoft visio; PFD.
Pengaruh Konsentrasi Karbon Disulfida (Cs2) Terhadap Kinerja Biosorben Selulosa Xanthate Untuk Penjerapan Logam Berat Nita Pita Sari; Dewi Agustina Iryani; Dedi Teguh; Yeni Ria Wulandari
Jurnal Sains & Teknologi Lingkungan Vol. 15 No. 2 (2023): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pencemaran logam berat merupakan salah satu masalah penting yang menimbulkan efek beracun. Logam berat yang terakumulasi pada tubuh manusia akan mengakibatkan berbagai resiko yang berbahaya. Mengingat bahaya yang ditimbulkan oleh logam berat, berbagai metode telah digunakan untuk menurunkan kadar logam berat. Salah satu metode yang digunakan dalam penelitian ini yaitu adsorpsi biosorben selulosa xanthate dari selulosa bagas tebu untuk menjerap logam berat Pb2+ dan Cu2+. Pembuatan biosorben dilakukan melalui proses xhantasi dengan memvariasikan konsentrasi Karbon Disulfida (CS2) yaitu 120%, 140%, dan 160% (b/b) dari jumlah bahan baku. Produk dari reaksi xhantasi selanjutnya dianalisa Derajat Substitusi (DS) dan Derajat Polimerisasi (DP) pada range 0,36−0,39 dan 301−308. Selain Uji Derajat Substitusi (DS) dan Derajat Polimerisasi (DP), karakter dari selulosa xanthate juga dilakukan analisa menggunakan SEM dan FTIR. Karakterisasi tersebut ditujukan untuk mengetahui morfologi permukaan dan perubahan gugus fungsi selulosa xanthate pada berbagai variasi konsentrasi karbon disulfida (CS2). Hasil pengujian menunjukkan bahwa karbon disulfida (CS2) tersubstitusi ke dalam gugus OH pada selulosa bagas tebu, sehingga selulosa xanthate mampu mengadsorpsi logam berat Pb2+ dan Cu2+ dengan kapasitas adsorpsi masing-masing 50,7 mg/g dan 47 mg/g pada konsentrasi Karbon Disulfida (CS2) 120%.
Co-Authors Aang Haryadi Aditya M Rif'at Amelia Sri Rezki Andika Wahyu Purnama Aprianti, Tine Dewi Agustina Iryani Dewi Ermaya Dewi Ermaya Fadian Farisan Silmi Hamdani Hamdani Imam Gunawan Putra Maria Siswi Wijayanti Muhammad Faizal Muhammad Faizal Muhammad Hafiz Ridho Muhammad Hatta Dahlan Mutiara Rizki Prayesi Nita Pita Sari Nurdiana Febriyanti Oktaf Rina Rizka Novi Sesanti Shintawati Shintawati Tuty Emilia Agustina Tuty Emilia Agustina Ulfa Fitrializa Variyana, Yeni Wulandari, Yeni Ria