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Formation of Phosphate Crystals from Cow Urine Using Aeration System Batch Reactor Nur Hidayatul Fitri; Adityas Agung Ramandani; Devy Cendekia; Dedi Teguh
CHEMICA: Jurnal Teknik Kimia Vol 10, No 2 (2023): August 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i2.26595

Abstract

The waste generated from the livestock sector is cow urine containing nitrogen, sulfur, phosphate, ammonium, sodium, manganese, iron, silica, chlorine, magnesium and calcium. The aim of this research is to reduce phosphate levels which will have an impact on the environment caused by cow urine which contains phosphate and ammonium and forms phosphate crystals using a batch reactor with an aeration system. The results of wastewater treatment using a batch reactor produce precipitate in the form of phosphate crystals which can be used as fertilizer for plants. This study used a completely randomized design (CRD) with two repetitions, namely with a comparison of the rate of aeration (air flow) 1 Lpm, 1.5 Lpm and 2 Lpm with the time used, namely 0 minutes, 60 minutes, 120 minutes, 180 minutes and 240 minute. Based on research that has been done, the highest aeration rate (air flow) in phosphate removal in cow urine waste is at 1 Lpm air flow with a time of 240 minutes and a phosphate removal efficiency of 84.8822%. Meanwhile, at an air flow of 1.5 Lpm with a time of 60 minutes and a phosphate removal efficiency of 95.4315%. At an air flow of 2 Lpm with a time of 240 minutes, the removal efficiency can only be 34.3421%. The content of phosphate crystals obtained from the XRF results was obtained at 3.173%. At an air flow of 2 Lpm with a time of 240 minutes, the removal efficiency can only be 34.3421%. The content of phosphate crystals obtained from the XRF results was obtained at 3.173%. At an air flow of 2 Lpm with a time of 240 minutes, the removal efficiency can only be 34.3421%. The content of phosphate crystals obtained from the XRF results was obtained at 3.173%.
UTILIZATION OF BAMBOO WASTE BY ENGINEERING ACID HYDROLYSIS (H2SO4) TO PRODUCE FURFURAL COMPOUNDS Nur Hidayatul Fitri; Adityas Agung Ramandani; Devy Cendekia; Dedi Teguh
CHEMICA: Jurnal Teknik Kimia Vol 10, No 2 (2023): August 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i2.26609

Abstract

Bamboo waste containing lignocellulosic can be used as a material for forming furfural compounds. Furfural is an intermediate product that is widely needed by the chemical industry in the manufacture of finished products such as resins, disinfectants, lubricating oils, synthetic rubber, and so on. This product can be produced from materials containing pentosan. The purpose of this study was to determine the effect of the delignification process on pentosan levels,yield and characterization of the resulting furfural, as well as the potential of pentosan to become furfural compounds. In this study the formation of furfural from bamboo waste was carried out using the acid hydrolysis method, with the independent variables namely cooking temperatures of 90 oC, 100 oC and 110 oC, H2SO4 concentrations of 5%, 10% and 15% and cooking times of 60 minutes, 90 minutes , and 120 minutes. Based on the results of research that has been done, it is known that the delignification process has an influence on the pentosan level, where the sample without delignification obtained a pentosan level of 11.10% and using the delignification process obtained a pentosan level of 14.67%. Characterization of furfural analysis results by color test showed a change in color to red and based on the results of GC-MS analysis at retention time 24.
PENERAPAN TEKNOLOGI AOPS DENGAN METODE FENTON-KATALITIK PADA PENGOLAHAN LIMBAH CAIR TPA BAKUNG Dedi Teguh; Dewi Ermaya; Hendri Gustian; Nita Pita Sari
Jurnal Inovasi Teknik Kimia Vol 8, No 4 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v8i4.9361

Abstract

Jumlah sampah yang masuk ke TPA Bakung terus mengalami kenaikan seiring dengan perkembangan jumlah penduduk. Namun, volume sampah yang besar berpotensi menghasilkan air lindi yang dapat mencemari lingkungan. Air lindi (leachate) yang berasal dari timbunan sampah biasanya ditandai dengan bau busuk, berwarna hitam dengan kandungan asam lemak volatile dan rasio BOD dan COD yang tinggi serta banyak diantaranya bersifat toksik. Salah satu cara untuk mengolah air lindi adalah dengan teknologi Advanced Oxidation Processes (AOPs) dengan metode Fenton-katalitik. Penelitian ini bertujuan untuk mengolah air lindi TPA Bakung menggunakan metode Fenton-katalitik serta mengetahui pengaruh rasio molar Fenton (1:150, 1:200, 1:250) dan waktu reaksi (30, 60, 90, 120 menit) dengan konsentrasi TiO2 0,6% terhadap degradasi warna, COD, dan BOD. Hasil penelitian menunjukkan degradasi warna, COD, dan BOD terjadi pada semua rasio molar Fenton dan waktu reaksi. Kondisi optimum dicapai pada rasio molar Fenton 1:250 dan waktu reaksi 120 menit dengan persentase degradasi warna, COD, dan BOD maksimum yang dihasilkan masing-masing sebesar 99,96%, 99,53%, dan 99,64%.Kata kunci: AOPs, Fenton, TiO2, TPA Bakung
PENGENALAN DAN PELATIHAN APLIKASI SUPERPRO DESIGNER KEPADA GURU SMKN 8 BANDAR LAMPUNG Fadian Farisan Silmi; Yeni Ria Wulandari; Yeni Variyana; Amelia Sri Rezki; Dedi Teguh; Dewi Ermaya; Shintawati Shintawati; Iskandar Zulkarnain
Jurnal Abimana (Jurnal Pengabdian Kepada Masyarakat Nasional) Vol 1 No 1 (2024): Mei
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat Politeknik Negeri Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/abimana.v1i1.3544

Abstract

Pelaksanaan pendidikan berpedoman pada kurikulum yang telah disusun secara sistematis dan bertahap yang diterapkan dalam proses pembelajaran. Pengembangan pendidikan Sekolah Menengah Kejuruan (SMK) di Indonesia harus diarahkan untuk beradaptasi dengan dinamika global dan nasional khususnya terhadap Revolusi Industri 4.0 saat ini, menyesuaikan dengan kebutuhan dunia kerja dengan menyempurnakan kurikulum dan mengintegrasikan dengan banyak pemangku kepentingan. SMK Negeri 8 Bandar Lampung berdiri berdasarkan Surat Keputusan Wali Kota Bandar Lampung Nomor 511/14.40/HK/2014 tanggal 11 April 2014. Kurikulum yang digunakan di SMK Negeri 8 Bandar Lampung adalah Kurikulum Merdeka. Bandar Lampung saat ini adalah terbatasnya pengetahuan dan keterampilan guru dalam pemanfaatan teknologi software engineering SuperPro Designer yang digunakan dalam bidang Teknik Kimia Industri. Padahal SMKN 8 Bandar Lampung memiliki fasilitas Laboratorium Komputer yang memadai namun belum terpasang software pendukung lanjutan Teknik Kimia khususnya aplikasi SuperPro Designer. Dengan adanya kegiatan PKM ini diharapkan fasilitas pendukung dalam proses belajar dalam hal ini aplikasi SuperPro Designer dapat meningkatkan pengetahuan dan keterampilan guru di SMKN 8 Bandar Lampung.
Co-Authors Adityas Agung Ramandani Amelia Sri Rezki Devy Cendekia Dewi Ermaya Dewi Ermaya Fadian Farisan Silmi Hendri Gustian Iskandar Zulkarnain Nita Pita Sari Nur Hidayatul Fitri Shintawati Shintawati Variyana, Yeni Wulandari, Yeni Ria