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All Journal Reaktor Jurnal Bahan Alam Terbarukan Bulletin of Chemical Reaction Engineering & Catalysis World Chemical Engineering Journal FLYWHEEL : Jurnal Teknik Mesin Untirta Teknika: Jurnal Sains dan Teknologi Prosiding Semnastek Jurnal Teknika Martabe : Jurnal Pengabdian Kepada Masyarakat Journal of Community Service in Science and Engineering Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Pengabdian Dinamika Journal of Systems Engineering and Management JURNAL REKAYASA KIMIA & LINGKUNGAN
Endang Suhendi, Endang
Universitas Sultan Ageng Tirtayasa
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation

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SINTESA ASAM LAKTAT BERBAHAN BAKU TANDAN KOSONG KELAPA SAWIT MENGGUNAKAN TRICHODERMA RESEEI DAN LACTOBACILLUS ACIDIPILLUS Rahmayetty Rahmayetty; Dhena Ria Barleany; Anton Irawan; Endang Suhendi
Prosiding Semnastek PROSIDING SEMNASTEK 2015
Publisher : Universitas Muhammadiyah Jakarta

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

Abstract

Tandan kosong kelapa sawit (TKKS) merupakan limbah pertanian dengan kadar selulosa yang tinggi, sehingga berpotensi untuk dikonversi menjadi berbagai macam produk. Salah satu senyawa kimia yang dapat dihasilkan dari selulosa TKKS adalah asam laktat. Asam laktat merupakan bahan baku utama dalam pembuatan polimer biodegradable berupa polilactic acid (PLA). Penelitian ini bertujuan untuk  mendapatkan konsentrasi mikroorganisme Lactobacillus acidophilus yang dapat menghasilkan asam laktat dengan konsentrasi yang tinggi. Tahapan penelitian meliputi pretreatment, hidrolisis dan fermentasi. Pretreatment TKKS menggunakan NaOH, Tahap  hidrolisis  selama 48 jam menggunakan Trichoderma reesei 5 % (w/w)  dan   tahap   fermentasi   selama  48 jam   menggunakan   Lactobacillus acidophilus dengan variasi 0.5; 1; 3; 5%. Analisa glukosa menggunakan spektrofotometri dan  asam laktat menggunakan High performance liquid chromatography (HPLC). Konsentrasi gula reduksi yang dihasilkan dari proses hidrolisis sebesar 16,6-17,9 g/L dan konsentrasi asam laktat tertinggi 0.568 g/L didapatkan dengan penambahan Lactobacillus acidophilus 3%
SOSIALISAI PENCEGAHAN COVID19 DI LINGKUNGAN PONDOK PESANTREN MODERN KULNI BANTEN Denni Kartika Sari; Dhena Ria Barleany; Retno Sulistyo Dhamar Lestari; Endang Suhendi
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 4, No 3 (2021): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v4i3.706-709

Abstract

Penyebaran covid  19 yang semakin masif saat ini diseluruh dunia, menjadi perhatian semua pihak Indonesia merupakan salah satu negara yang cukup tinggi dalam infeksi Covid 19. Januari 2021 Indonesia merupakan urutan ke 19 berdasarkan jumlah kasus terinfeksi. Pondok pesantren merupakan salah satu Lembaga Pendidikan beresiko tinggi karena menerapkan pembelajaran langsung dengan fasilitas berasrama . Salah satu upaya yang dapat dilakukan adalah dengan memberikan bantuan terkait dengan alat pencegahan penyebaran covid 19. Sosialisai juga dilakukan untuk meningkatkan kesadaran akan pentingnya pencegahan covid 19. Sosialisasi  dan pencegahan sebaran covid 19 dilakukan dengan memberikan bantuan spanduk, handsanitizer dan  masker      
Effect of Bayah natural zeolite for purification of waste cooking oil as feedstock of alkyd resin Heri Heriyanto; Endang Suhendi; Nadya Fitri Asyuni; Ilham Kiki Shahila
Jurnal Teknika Vol 18, No 1 (2022): Available Online in June 2022
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v18i1.15542

Abstract

The waste of cooking oil was increased due to the cooking oil consumption increases. Waste cooking oil can reuse for raw material after the adsorption process with Bayah's natural zeolite, such as feedstock of alkyd resins. This paper studied the effect of the mass of Bayah natural zeolite (w/w %) on the characteristics of waste cooking oil. The Bayah natural Zeolite as adsorbent to reduce the value of free fatty acids and peroxide numbers The first stage is the preparation of waste cooking oil and Bayah natural zeolite, and then activation of Bayah natural zeolite, and the adsorption process of waste cooking oil with 15 and 30% w/w of zeolite. The results show the characteristics of waste cooking oil which before being adsorbed had an acid value of 1.51% and a peroxide value of 28.43 mek O2/kg which had passed the quality standard parameters of cooking oil quality. The effect of alkaline (NaOH 15 and 30%) activated zeolite to waste cooking oil decreases the free fatty acid content to 0.98% and 0.75%, and the peroxide value was 19.54 mek O2/kg and 18.38 mek O2/kg, respectively. The greater the amount of zeolite added the lower the acid number and peroxide value in the oil, thereby increasing the quality of the oil as raw material for alkyd resins. Minyak jelantah mengalami kenaikan seiring dengan meningkatkanya konsumsi minyak goreng. Minyak jelantah dapat digunakan kembali untuk bahan baku setelah proses adsorpsi dengan zeolit alam Bayah, seperti untuk bahan baku alkyd resin. Makalah ini mempelajari pengaruh massa zeolit alam Bayah (b/b %) terhadap karakteristik limbah minyak jelantah. Tahap pertama adalah preparasi minyak jelantah dan zeolit alam Bayah, kemudian aktivasi zeolit alam Bayah, dan proses adsorpsi minyak jelantah dengan massa zeolit 15 dan 30% b/b. Hasil penelitian menunjukkan karakteristik minyak jelantah sebelum diadsorbsi memiliki bilangan asam 1.51% dan bilangan peroksida 28.43 mek O2/kg yang telah sesuai dengan parameter baku mutu minyak goreng. Pengaruh zeolit teraktivasi alkali (NaOH 15 dan 30 %) terhadap minyak jelantah menurunkan kadar asam lemak bebas menjadi 0.98% dan 0.75%, serta bilangan peroksida masing-masing adalah 19.54 mek O2/kg dan 18.38 mek O2/kg. Semakin besar jumlah zeolit yang ditambahkan, maka semakin rendah bilangan asam dan bilangan peroksida dalam minyak, sehingga meningkatkan kualitas minyak sebagai bahan baku alkyd resin.
Training on making composters and biopore holes as a solution to the organic waste problem Retno Sulistyo Dhamar Lestari; Denni Kartika Lestari; Dhena Ria Barleany; Endang Suhendi; Jayanudin Jayanudin
Journal of Community Service in Science and Engineering (JoCSE) Vol 2, No 2 (2023): Available Online in October 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jocse.v2i2.21031

Abstract

Pengelolaan sampah organik dan anorganik merupakan salah satu permasalahan yang sering terjadi di masyarakat. Pengembangan komunitas dan pengenalan teknologi pembuatan kompos dan lubang biopori merupakan upaya untuk meningkatkan potensi lingkungan berupa pengelolaan sampah organik. Metode yang digunakan dalam kegiatan pengabdian ini adalah penyuluhan dan focus group discussion (FGD). Permasalahan yang sering terjadi adalah sampah rumah tangga yang dibiarkan tidak terpilah dan langsung dikirim ke tempat pembuangan sampah menyebabkan banyaknya sampah yang menumpuk di tempat pembuangan akhir (TPA). Program ini fokus pada perubahan pola pikir masyarakat dalam menangani sampah rumah tangga, memilah sampah, dan membuat lubang-lubang biopori di setiap rumah dan lahan terbuka serta membuat komposter untuk mengolah sampah organik menjadi kompos. Management of organic and inorganic waste is one of the problems that often occurs in society. Community development and the introduction of composting technology and bio pore holes are efforts to increase environmental potential through organic waste management. The methods used in this service activity are counseling and focus group discussions (FGD). The problem is that household waste is left unsorted and sent directly to landfills, causing large amounts of garbage to pile up in final disposal sites (TPA). This program focuses on changing the community's mindset in handling household waste, sorting waste, making bio pore holes in every house and open land, and making a composter to process organic waste into compost.
The Effect of Time on the Activation of Bayah Natural Zeolite for Application of Palm Oil Shell Pyrolysis Endang Suhendi; Teguh Kurniawan; Adian Yoga Pradana; Vicky Zayan Giffari
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 3 Year 2021 (September 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.3.10313.588-600

Abstract

Oil palm shell (OPS) constitutes 60% of the waste generated during the processing of palm oil. However, OPS can potentially be converted into energy and chemicals through pyrolysis. The purpose of this study is to determine and analyse the effect of acid treatment time on the characteristics of natural zeolites, which were then applied to oil palm shell pyrolysis. The effect of the acid treatment time on the products of the pyrolysis was also studied. The acid treatment time was varied: 1, 3, and 5 hours. The crystallinity of the natural zeolites was determined by       X-ray diffraction (XRD). Solid, liquid and gaseous pyrolysis products were observed. Proximate, ultimate, and heat analysis were performed on the solid product. The liquid product was characterised using gas chromatography-mass spectrometry (GC-MS). Gas Chromatography (GC) was performed to analyse the composition of the gases produced. The results obtained from this study indicate that longer reflux times reduced the crystallinity of the zeolites. The addition of the zeolite catalysts increased the liquid products of pyrolysis from 24.5 wt% over the parent to 24.6–37.1 wt% over the acid-treated natural zeolites. The reduction of oxygenated compounds in bio-oil was observed in the amount of acetic acid and acetone produced. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA   License (https://creativecommons.org/licenses/by-sa/4.0). 
Perancangan sistem informasi manajemen penanganan sampah berbasis circular economy secara digital di Kota Cilegon Bahauddin, Achmad; Abdullah, Muhammad Hasyim; Kurniawan, Bobby; Fuad, Anis; Trenggonowati, Dyah L.; Rahmayetty, Rahmayetty; Suhendi, Endang
Journal of Systems Engineering and Management Vol 1, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/joseam.v1i1.17601

Abstract

Sampah merupakan hasil sisa dari produk yang tidak dapat digunakan kembali. Sampah memiliki ancaman bagi lingkungan apabila tidak diolah dengan baik. Banyak cara untuk menangani permasalahan sampah. Salah satu bentuk dari penanganan sampah adalah penanganan berbasis circular economy dengan bank sampah menjadi wadah masyarakat untuk memilah sampah. Sampah yang ditabung oleh nasabah akan memiliki nilai ekonomi bagi nasabah berupa saldo tabungan. Bank sampah dapat mengolah sampah yang telah dikumpulkan menjadi produk yang dapat digunakan kembali. Kota Cilegon memiliki bank sampah di berbagai lokasi. Cara penanganan sampah dengan sistem pendataan yang masih dilakukan secara manual dan pertukaran informasi secara tatap muka belum memiliki manajemen yang efektif dan efisien. Perancangan sistem informasi secara digital dengan platform android dapat mempermudah manajemen pendataan sampah dan nasabah dalam bank sampah. Tujuan dari makalah ini sebagai bentuk dokumentasi secara komprehensif tahapan dalam perancangan sistem informasi manajemen penanganan sampah berbasis circular economy secara digital menggunakan platform android. Aplikasi android yang dikembangkan menggunakan konsep System Development Life Cycle. Tahapan yang dilakukan yaitu perancanaan sistem, analisis sistem, perancangan sistem, implementasi sistem dan pengujian sistem. Penggunaan model DFD, ERD, use case diagram dan activity diagram dalam perancangan sistem maka dapat dibuatnya aplikasi android dengan nama Bank Sandi. Aplikasi Bank Sandi dilakukan pengujian sistem menggunakan metode Skala Kebolehgunaan Aplikasi Mudah Ahli (SKAMA) dengan skor sebesar 85,75. Aplikasi Bank Sandi memiliki usability yang baik karena memiliki nilai rata-rata skor usability diatas skor 68.
Polylactic acid Synthesis via Direct Polycondensation Method Using Candida rugosa Lipase Catalyst Rahmayetty, Rahmayetty; Barleany, Dhena Ria; Suhendi, Endang; Prasetya, Bayu; Andiyani, Tuti
World Chemical Engineering Journal VOLUME 1 NO. 5 DECEMBER 2017
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i5.2621

Abstract

Polylactic acid (PLA) is a biodegradable, biocompatible polymer and is produced from renewable natural resources. PLA synthesis through a polycondensation mechanism generally uses a metal catalyst, such as Zn and Sn oxides. The disadvantages of using metal catalysts are the contamination of products produced by the metals used so that unsafe products are used for biomedical applications and food packaging. The purpose of this research is to synthesize the safe PLA used for food packaging and biomedical applications. Polycondensation is done by pretreatment of lactic acid at 120oC for 1 hour. Diluted lactic acid is mixed with Candida rugosa lipise catalyst with a certain concentration (1, 2, 3 and 4% w / w). The mixture was heated at certain temperature (60; 80; 100 and 120oC) and vacuum pressure of 0.1 bar for 72 hours. The highest viscosity and density of PLA in this study was produced at 100oC and using 3% Candida rugosa lipase. The highest viscosity and density of PLA were 2443,9 CSt and 1231,9 mg / l respectively. Candida rugosa lipase concentration does not affect PLA yield at constant polycondensation temperature. PLA yield is affected by temperature. PLA yields at 60, 80, 100 and 120 ° C are 97.98; 97,65; 96.78; 96.13% respectively. The molecule weight of PLA at temperature 100oC for 1436-1482. Lipase concentration does not affect the molecular weight of the PLA.
Syngas Production by the Gasification of Bayah’s Coal over Ca(OH)2 and Na2CO3 catalyst Heriyanto, Heri; Nahudin, Ahmad; Amyranti, Mutia; Firdaus, Mochamad Adha; Suhendi, Endang; Kosimaningrum, Widya Ernayati
World Chemical Engineering Journal VOLUME 4 NO. 1 JUNE 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i1.10589

Abstract

Official data of Indonesia’s coal reserve provided by government in 2014 approximately reached 104.8 billion tonnes. Bayah as a part of South Banten region has been stored quite amount of coal. Gasification is one solution to utilize Bayah’s coal potential. Coal Gasification is a conversion process of solid phase coal into synthetic gas mixture (CO, H2). Main reaction of the process involves Boundouard and Water-Gas-Shift reaction. The aim of experiment was to observes influence of several variables such as : Air Fuel Ratio (AFR), Temperature, and Catalyst at particular condition. Gasification process becomes beneficial when ratio of synthetic gas mixture (H2/CO) exhibits 2.0. Synthetic gas mixtures were analyzed by using gas chromatograph method. 300 grams of Bayah’s coal (14 – 18 mesh) were gasified in updraft type of fixed bed reactor using steam injection under Air Fuel Ratio varied between 1.5, 2.0, 2.5, temperature of 600°C, 700°C, 800°C and catalyst of Ca(OH)2 and Na2CO3 . Air Fuel Ratio of 1.5 and 800 with the help Ca(OH)2 catalyst tended to produce the optimum result for H2/CO ratio which obtained a value of 1.98. Synthetic gas composition  at this variation reached 33.8% for Hydrogen and 17.1% for Carbon Monoxide.
OPTIMALISASI KOMODITAS KACANG TANAH MENJADI PRODUK OLAHAN PANGAN UNGGULAN DI DESA CIKEBEL ATAS CILEGON BANTEN Suhendi, Endang; Barleany, Dhena Ria; Lestari, Retno Sulistyo; Sari, Denni Kartika; Adiwibowo, Muhammad Triyogo; Kustiningsih, Indar; Ernayati, Widya; Rochmat, Agus
Jurnal Pengabdian Dinamika Vol 6, No 1 (2019)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/dinamika.v6i1.8760

Abstract

Cikebel Atas is one of the villages in the Cilegon area, Banten, which is located in a rural area andfar from urban influences. In this village the level of education of the people is very low, and dailylivelihoods are as laborers or motorcycle taxi drivers. Actually this village has the potential forabundant agricultural products, namely in the form of peanuts. Due to lack of knowledge, villagersusually sell these peanuts to collectors at low prices. Peanuts can actually be processed into superiorprocessed products that are characteristic of the region, namely peanut tempeh, peyek, or otherproducts that have higher economic value. The community service program is conducted to providemotivation and knowledge to the community about entrepreneurship, especially in terms of localcommodity management in the form of peanuts. The method is arranged in several concrete steps,namely in the form of counseling or outreach, as well as direct training and practice for peanuttempeh and peyek processing technology. Through these concrete programs, it is targeted that therewill be a change in people's lives in the village of Cikebel Atas, Cilegon, Banten, for the better.
Improving Carrageenan Extraction Efficiency and Stability Using KOH, NaOH, and Anti-Caking Agents Heriyanto, Heri; Dewi Yasya, Annisa; Rahma Putri, Azzahra; Suhendi, Endang; Kanani, Nufus; Pujiastuti, Hendrini
Jurnal Rekayasa Kimia & Lingkungan Vol 20, No 1 (2025): Jurnal Rekayasa Kimia & Lingkungan (June, 2025)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v20i1.42031

Abstract

This study investigates the impact of varying concentrations of potassium hydroxide (KOH) and sodium hydroxide (NaOH), along with anti-caking agents, on the quality of carrageenan extracted from Eucheuma cottonii seaweed. FTIR analysis revealed that KOH-extracted carrageenan retained key functional groups, including sulfate esters and glycosidic bonds, essential for its classification as kappa-carrageenan. KOH also proved more effective than NaOH in reducing moisture content, preserving structural integrity, and meeting the Indonesian National Standards (SNI) for carrageenan quality. The addition of anti-caking agents further optimized product stability, particularly in moisture control. The result shows that KOH was more effective than NaOH in improving carrageenan yield, with a yield of 46% achieved using 12% KOH and 4 g TCP. Anti-caking agents like tricalcium phosphate improved the products moisture control and stability. Future research should focus on refining extraction methods to enhance both product quality and yield.
Co-Authors Abdullah, Muhammad Hasyim Achmad Bahauddin Adian Yoga Pradana Agus Rochmat Aisah Hasanah Aisah Hasanah, Aisah Amyranti, Mutia Andiyani, Tuti Andre Wibowo Anis Fuad Anton Irawan Bambang Prasetya Bobby Kurniawan D. R. Barleany Denni Kartika Lestari Denni Kartika Sari Denni Kartika Sari Dewi Yasya, Annisa Dyah L. Trenggonowati Eko Prasetyo Eko Prasetyo Fatah Sulaiman Fauzan, Eka R. Firdaus, Mochamad Adha Gilang Umar Paradise, Gilang Umar Heri Heriyanto Heri Heriyanto Heriyanto, Heri Idham Priandana, Idham Ilham Kiki Shahila Indar Kustiningsih Jayanudin Jayanudin Kosimaningrum, Widya Ernayati Lestari, Retno Sulistyo Misri Gozan Muhammad Triyogo Adiwibowo Nadya Fitri Asyuni Nahudin, Ahmad Naibaho, Pipiet P.U. Ni Ketut Caturwati Ni Ketut Caturwati, Ni Ketut Nindya Prastuti Nufus Kanani, Nufus Okta Abdul Choir Prasetya, Bayu Pujiastuti, Hendrini Rahma Putri, Azzahra Rahmayetty Rahmayetty Rahmayetty, Rahmayetty Retno Sulistyo Dhamar Lestari Retno Sulistyo Dhamar Lestari Sukirno Sukirno Syaidah Anjariyah Syaidah Anjariyah, Syaidah Teguh Kurniawan Teguh Kurniawan Tia Lestari Vicky Zayan Giffari Widya Ernayati Kosimaningrum