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All Journal BANGUN REKAPRIMA Proceedings Series on Physical & Formal Sciences Journal of Green Science and Technology Jurnal TekLA
Dimas Langga Chandra Galuh, Dimas Langga Chandra
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Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Mechanical Engineering Transportation Other

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Efektivitas Instalasi Pengolahan Air Limbah Berdasarkan Parameter COD, BOD, TSS, pH (Studi Kasus Industri Tahu di Dusun Janten Ngestiharjo Kasihan Bantul) Setiadji, Wawan; Effendi, Novan Rico; Sutrisno, Widarto; Mashadi, Ahmad; Galuh, Dimas Langga Chandra
Proceedings Series on Physical & Formal Sciences Vol. 6 (2023): Prosiding Seminar Nasional Teknik (SENATEK) 2023
Publisher : UM Purwokerto Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/pspfs.v6i.848

Abstract

The liquid waste generated from tofu production process contains high Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Total Suspended Solid (TSS) as well as low pH levels or acidity. Therefore, the tofu waste needs to be treated before being discharged into the environment to prevent negative impacts on the surrounding environment. Thus, this study aimed to test the effectiveness of the tofu wastewater treatment plant by monitoring the parameters of COD, BOD, TSS and pH using the closed reflux titrimetry, gravimetri and pH meter methods. The sampling was carried out with triple sampling (triplo) at each testing point, which were the equalization tank, anaerobic baffle reactor tank, anaerobic filter tank, and final settling tank. The sample testing was conducted at the "Balai Laboratorium Kesehatan dan Kalibrasi Yogyakarta". The results of the testing were used to determine the reduction in COD and the increase in pH between the wastewater treatment plant tanks, and then the effluent of the wastewater treatment plant was compared with the wastewater quality standards. The results of this study indicate that the average reduction of COD in the effluent is 94%, BOD is 93%, and TSS is 87%. Based on these findings, it can be concluded that the effluent from the wastewater treatment plant is not yet effective in meeting the wastewater quality standards. However, it is worth noting that the pH parameter meets the wastewater quality standards, with an increase of +1.38 compared to the influent pH level. Therefore, in terms of this parameter, the wastewater treatment plant can be considered effective in raising the pH.
STUDI EKSPERIMENTAL KUAT TEKAN BETON GEOPOLIMER MOLARITAS RENDAH DENGAN VARIASI ALKALI AKTIVATOR 1,5 DAN 2,5 Sulistyorini, Dewi; Galuh, Dimas Langga Chandra; Prayogi, Yobhy Oktaviandre; Ardiansyah, Mohammad Tegar; Hakim, Abdu Rasyid
Bangun Rekaprima Vol. 9 No. 1 (2023): April 2023
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (459.012 KB) | DOI: 10.32497/bangunrekaprima.v9i1.4603

Abstract

Semen sebagai salah satu material beton yang menghasilkan polusi CO2 setara dengan produksinya. Dibutuhkan bahan alternatif ramah lingkungan dalam pembuatan beton untuk menggurangi emisi CO2. Beton geopolimer merupakan jenis beton inovasi yang materialnya sangat bersih dari penggunaan semen kemudiandiganti fly ash sehingga beton tersebut ramah lingkungan.Penelitian ini untuk mengetahui pengaruhmolaritas rendah (2M, 3M, 4M) dengan variasi alkali aktivator atau SS/SH (1,5 dan 2,5) terhadap kuat tekan beton geopolimer pada umur 28 hari. Metode penelitian yang digunakan adalah eksperimen, dengan menggunakan benda uji silinder 15/30 sebanyak 18 silinder.Perawatan dengan suhu ruang. Hasil kuat tekan rata-rata beton geopolimer rasio SS/SH 1,5 pada molaritas 2M, 3M dan 4M berturut-turut sebesar 21,08 MPa, 26,68 MPa, dan 29,72 MPa. Kuat tekan rata-rata beton geopolimer rasio SS/SH 2,5 pada molaritas 2M, 3M, 4M sebesar 27,02 MPa, 29,67 MPa dan 33,47 MPa.
PENGUJIAN TARIK BAJA PROFIL C PADA STRUKTUR RANGKA ATAP Galuh, Dimas Langga Chandra; Sutrisno, Widarto; Dodok, Yohanes Yoan; Adolf, Mikael Irvan; Patiung, Juannito
Jurnal TeKLA: Jurnal Inovtek Seri Teknik Sipil dan Aplikasi Vol 6 No 2 (2024): Inovtek seri TekLA
Publisher : P3M Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/tekla.v6.i2.269

Abstract

Dalam pembangunan infrastruktur, pemilihan material yang tepat sangat penting untuk kekuatan dan daya tahan suatu struktur. Baja profil C adalah material konstruksi yang sudah banyak digunakan karena memiliki sifat mekanik yang unggul dan sering diaplikasikan pada struktur rangka atap. Meskipun demikian, kualitas baja profil C dapat berbeda-beda tergantung pada merk serta proses produksinya. Penelitian ini fokus pada tiga merk baja profil C dengan ketebalan berbeda, yaitu FS 0,7 mm, B 0,8 mm, dan GS 0,99 mm. Sebanyak sembilan sampel yang diuji dengan standar ASTM A370 menggunakan Universal Testing Machine (UTM) untuk mengevaluasi kekuatan tarik maksimum dan tegangan leleh setiap merk. Hasil menunjukkan bahwa merk FS memiliki kekuatan tarik maksimum rata-rata tertinggi, yaitu 833,63 N/mm², diikuti oleh merk B dengan 805,74 N/mm², dan merk GS dengan 624,48 N/mm² dan hasil nilai rata-rata regangan FS memperoleh nilai yang lebih tinggi dibandingkan B dan GS. Perbedaan dalam kekuatan tarik dan regangan ini menunjukkan adanya variasi kualitas di antara merk yang diuji. Berdasarkan hasil tersebut, merk FS menunjukkan performa terbaik dalam aplikasi pada struktur rangka atap. Temuan ini diharapkan dapat memberikan acuan dalam pemilihan material baja ringan yang lebih tepat dalam konstruksi.
Cost And Time Analysis of Drainage Works Using Conventional Riverstone Method and Precast U-Ditch Method Yulianus Brechmans Dilianto; Galuh, Dimas Langga Chandra; Sutrisno, Widarto
Journal of Green Science and Technology Vol 8 No 1 (2024): Journal of Green Science and Technology Vol.8 No.1 March 2024
Publisher : Faculty of Engineering, Universitas Swadaya Gunung Jati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33603/jgst.v8i1.135

Abstract

The aim of this research is to determine the comparison of costs and work time using the conventional river stone method and the precast u-ditch method. So from the two methods mentioned above, we can choose or compare which method can provide benefits in terms of cost and time. This research uses a quantitative method, which explains a process of finding knowledge using data in the form of numbers as a tool for analyzing information about what you want to know in a situation that is the object of study and then analyzed. Comparative analysis of costs and time for drainage channel work using the conventional method with a length of 192 meters takes 55 working days with a cost of Rp 123,617,000.0 while the precast method with a length of 174 meters takes 48 working days with a cost of Rp 78,292,000.0 . The conventional method takes 14% longer to carry out work compared to the precast method. The cost per meter of work using the conventional method is Rp 6,438,385, while work using the method is Rp 4,449,540 with a difference of Rp 1,988,845. The use of precast methods is 30% lower than conventional methods.
Co-Authors Adolf, Mikael Irvan Ahmad Mashadi Ardiansyah, Mohammad Tegar Dewi Sulistyorini, Dewi Dodok, Yohanes Yoan Effendi, Novan Rico Hakim, Abdu Rasyid Patiung, Juannito Prayogi, Yobhy Oktaviandre Setiadji, Wawan Sutrisno, Widarto Yulianus Brechmans Dilianto