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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Civil and Environmental Science Journal (CIVENSE) Jurnal Rekayasa Hijau Jurnal Engineering Jurnal Sains dan Teknologi
Yasdi Yasdi
Universitas Jambi
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary

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Pemanfaatan Kompilasi Bentonit dan Karbon Aktif dari Batubara untuk Menurunkan Kadar BOD dan COD pada Limbah Cair Industri Karet Naswir, Muhammad; Yasdi, Yasdi; Chaniago, Muhammad Akbar; Wibowo, Yudha Gusti
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 2 (2020): Juli 2020
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (900.552 KB) | DOI: 10.14710/presipitasi.v17i2.121-127

Abstract

Industri karet telah menghasilkan limbah cair yang berbahaya bagi lingkungan sehingga diperlukan upaya pengolahan. Penelitian ini bertujuan untuk mengetahui kemampuan kompilasi bentonit dan karbon aktif yang terbuat dari batubara sebagai adsorben untuk penjerapan parameter limbah cair industri karet. Adapun hasil uji parameter limbah karet didapatkan bahwa kadar BOD (Biochemical Oxygen Demand) 805 ppm, COD (Chemical Oxygen Demand) 1415 ppm, amonia 12,5ppm, TSS 340 ppm, pH 6,60. Proses aktivasi bentonit dilakukan dengan manggunakan HCL 0,1 M, kemudian diaduk selama 1 jam dengan kecepatan 200 rpm lalu disaring residu yang dihasilkan dipanaskan dengan suhu 110oC selama 3 jam. Proses aktivasi karbon aktif dilakukan dengan menggunakan H3PO4 0,2 M lalu direndam selama 24 jam, kemudian dicuci dengan aquades sampai pH mendekati netral, dikeringkan dalam oven pada suhu 150 oC. Waktu kontak terbaik pada kompilasi bentonit dan karbon aktif dari batubara sebanyak 0,1 gram (1:1) dengan 250 ml limbah cair industri karet adalah 60 menit dengan efisiensi penjerapan BOD 99,75% dan COD 98,72%. Kompilasi terbaik bentonit dan karbon aktif dari batubara dalam penjerapan BOD & COD terdapat pada perbandingan kompilasi (1:1) dengan efisiensi penjerapan BOD 99,75% dan COD 98,72%.
Analysis of Cross-Sectional Capacity of the Jambi River in the Muaro Jambi Temple About Various Times of Flooding Using HEC-RAS Software Mayasari, Putri; Ilfan, Freddy; Yasdi, Yasdi; Rimba, Rimba
Civil and Environmental Science Journal (CIVENSE) Vol 4, No 2 (2021): IN PRESS
Publisher : Fakultas Teknik UB

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

Abstract

Jambi River is one of the rivers located in the Muaro Jambi Temple Complex Area, Muaro Jambi Regency, Jambi Province. Muaro Jambi Temple is one of the tourist attractions in Jambi Province. This study aims to find the capacity of Jambi River tested by planned flood discharge utilizing (synthetic unit hydrograph) HSS Nakayasu method for a return period of two, five, ten, twenty-five, fifty and hundred years. HEC-RAS software used to analyse the water level in the Jambi River towards the flood potential that causes the submerging of the Kedaton Temple building. This research used the log Pearson type III method to calculate the planned rain return period and used the Nakayasu synthetic unit method to calculate the planned flood discharge. The analysis showed that the Jambi River could not load the flood discharge in the five, ten, twenty-five, fifty, and one hundred years return period at several measurement points: river sta-1, river sta-2 and river sta-5. The floodwater level did not cause the Kedaton Temple building to be flooded from the simulation result.
Pembuatan Karbon Aktif dari Cangkang Buah Karet dengan Aktivator H3PO4 untuk Adsorpsi Logam Besi (III) dalam Larutan Siti Arofah; M Naswir; Yasdi Yasdi
Jurnal Engineering Vol. 1 No. 2 (2019): Volume 1, Nomor 2, Agustus 2019
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3574.629 KB) | DOI: 10.22437/jurnalengineering.v1i2.7816

Abstract

Penelitian ini bertujuan untuk mengetahui kualitas karbon aktif yang terbuat dari cangkang buah karet sebagai adsorben untuk penjerapan logam besi (III) dalam larutan. Proses karbonisasi dilakukan pada suhu 400 oC dan 500 oC selama 1 jam dengan variasi ukuran adsorben 80 mesh dan 120 mesh. Selanjutnya dilakukan aktivasi kimia menggunakan H3PO4 10 % selama 24 jam. Hasil uji spesifikasi menunjukkan bahwa karbon aktif terbaik pada sampel karbon ukuran 120 mesh dan suhu 500 oC dengan kadar air sebesar 4,1%. Kadar abu terendah dimiliki oleh sampel 80 mesh dan suhu 500 oC sebesar 0,5%. Daya jerap terbaik dimiliki oleh sampel karbon ukuran 120 mesh dan suhu 500 oC terhadap iodin sebesar 5.681 mg/g dan daya jerap terhadap metilen biru sebesar 18,8 mg/g. Karakterisasi karbon aktif cangkang buah karet menunjukan bahwa terdapat perbedaan gugus fungsi dan kandungan senyawa yang terdapat pada karbon sebelum dan setelah di aktivasi oleh H3PO4. Untuk proses adsorpsi karbon aktif terhadap larutan logam besi (III) waktu kontak terbaik adalah 90 menit dengan massa karbon aktif 0,5 gram menunjukkan efisiensi penjerapan sebesar 68%. Model isoterm yang tepat terhadap adsorpsi pada penelitian ini adalah model isoterm Freundlich.
Coconut shell-based activated carbon preparation and its adsorption efficacy in reducing BOD from The Real Wastewater from Kitchen Restaurant (RWKR): Characteristics, Sorption Capacity, and Isotherm Model Yasdi Yasdi; Dhea Ussarvi; Rinaldi Rinaldi; Febri Juita; Shassy Endah Cahyani
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 1 (2021): March 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (618.019 KB) | DOI: 10.14710/presipitasi.v18i1.116-130

Abstract

Real Wastewater from Kitchen Restaurant (RWKR) contains high concentrations of Biochemical Oxygen Demand (BOD) pollutants to pollute the environment. One of the processing alternatives to reduce BOD is the adsorption method using activated carbon from coconut shells. This study aims to determine coconut shell-activated carbon as an adsorbent for the adsorption of organic matter to reduce BOD in RWKR. The method begins with making adsorbents that are activated with activators on HCl 3 M, NaOH 3 M, and H3PO4 M, then a preliminary adsorption test is carried out to select the best activator on coconut shell activated carbon to reduce BOD in RWKR. Determining the optimum conditions for adsorption was carried out by varying pH 3, 4, 5, 6, 7, and 8. Variation of contact time with a stirring speed of 250 rpm, then determined the isotherm model. The remaining organic matter in the wastewater will be measured using a DO meter based on SNI 6989.72: 2009 concerning the method of testing for biochemical oxygen demand (BOD). The results showed that the appropriate activator for coconut shell activated carbon was H3PO4 3 M with an average percentage value of uptake of 89.690%. The adsorption process's optimum pH is at pH 3 with an absorption percentage value of 88.626%. The optimum contact time is at 10 minutes and the adsorption isotherm model used is the Freundlich isotherm with a regression value of R2 = 0.8864.
Intensitas Bising dan Pemetaan Kebisingan dengan Surfer 13 di Lingkungan Kerja PT Hok Tong Jambi Romi Afrizal; Febri Juita Anggraini; Yasdi yasdi
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 6, No 3 (2022)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v6i3.197-207

Abstract

ABSTRAKPT Hok Tong Jambi merupakan perusahaan yang bergerak dalam bidang pengolahan karet remah (crumb rubber), dimana dalam proses produksinya tidak terlepas dari bantuan mesin-mesin dan peralatan produksi yang dapat menghasilkan kebisingan yang tinggi. Tingginya tingkat kebisingan di lingkungan kerja PT Hok Tong Jambi dapat meningkatkan potensi bahaya bising terhadap pekerja. Penelitian ini dilakukan untuk mengetahui intensitas bising dan pola sebaran kebisingan dari 45 titik di lingkungan kerja PT Hok Tong Jambi dengan Software Surfer 13. Penentuan titik pengukuran bising menggunakan metode titik sampling dengan jarak antartitik 10 meter dan pengukuran kebisingan dengan metode sederhana yang berpedoman pada Keputusan Menteri Negara Lingkungan Hidup Nomor 48 Tahun 1996 tentang Baku Mutu Tingkat Kebisingan. Hasil pengukuran tingkat kebisingan menunjukkan bahwa tingkat kebisingan di lingkungan kerja PT Hok Tong Jambi telah melebihi Nilai Ambang Batas (85 dB) yaitu berkisar 66,5 – 99,8 dBA. Tingkat kebisingan tertinggi berasal dari area produksi basah (titik 32) dengan intensitas bising sebesar 99,8 dBA, sedangkan kebisingan terendah berasal dari area kantor (titik 9) dengan intensitas bising sebesar 66,5 dBA. Berdasarkan hasil pemetaan kebisingan yang telah dibuat diperoleh bahwa sumber kebisingan utama bersumber dari area produksi seperti area produksi basah, produksi kering, bahan baku, kamar jemur, penindihan, area press, pompa IPAL dan kamar mesin.ABSTRACTPT Hok Tong Jambi is a company engaged in the processing of crumb rubber (crumb rubber), where the production process is inseparable from the assistance of production machines and equipment that can produce high noise. The high level of noise in the work environment of PT Hok Tong Jambi can increase the potential for noise hazards to workers. This research was conducted to determine the noise intensity and distribution patterns of noise from 45 points in the work environment of PT Hok Tong Jambi with Software Surfer 13. Determination of noise measurement points using the point sampling method with a distance of 10 meters and noise measurement using a simple method based on the Ministerial Decree State of the Environment Number 48 of 1996 concerning Quality Standards for Noise Levels. The results of noise level measurements indicate that the noise level in the work environment of PT Hok Tong Jambi has exceeded the Threshold Value (85 dB), which ranges from 66., – 99,8 dBA. The highest noise level came from the wet production area (point 32) with a noise intensity of 99,8 dBA, while the lowest noise came from the office area (point 9) with a noise intensity of 66,5 dBA. Based on the results of the noise mapping that has been made, it is found that the main noise sources come from production areas such as wet production areas, dry production areas, raw materials, drying rooms, press areas, WWTP pumps and machine rooms. 
Efektivitas Karbon Aktif Dari Batu Bara Muda dalam Menurunkan COD pada Air Limbah Industri Tahu Febri Juita Anggraini; Rara Arsapita; Yasdi Yasdi
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 2 (2023): April 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i2.1822

Abstract

Lignite is the lowest quality coal and cannot be traded in the market. One alternative is that lignite coal has a better use value, lignite coal can be used as a material for making activated carbon. Coal which has become activated carbon can be applied to tofu industrial waste water as an adsorbent in absorbing chemical oxygen demand contained in tofu industrial waste water. The purpose of this study was to determine the characteristics of activated carbon from lignite,opium conditions and isotherm modeling. The method used in the manufacture of activated carbon from lignite is to use an activator in the form of 2 M NaOH with a carbonization temperature of 500°C using variations of 60 minutes and 90 minutes, then the activated carbon is soaked in 2 M HCl solution. Results from carbon characteristics The active lignite coal meets the requirements of SNI 06-3730-1995, the optimum time for reducing COD is 15 minutes with %removal of 66%, the optimum pH for reducing COD is pH 5 with %removal of 63.84% and the isotherm model follows the Harkin isotherm model - Jura with an average relative error of 13.024.
Co-Authors Chaniago, Muhammad Akbar Dhea Ussarvi Ilfan, Freddy Juita, Febri M Naswir Naswir, Muhammad Putri Mayasari Rara Arsapita Rimba, Rimba Rinaldi Rinaldi Romi Afrizal Shassy Endah Cahyani Siti Arofah Wibowo, Yudha Gusti