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All Journal Jurnal Inovasi Teknik Kimia Unistek: Jurnal Pendidikan dan Aplikasi Industri REACTOR : Journal of Research On Chemistry And Engineering
Suhirman Suhirman
Sekolah Tinggi Teknologi Fatahillah Cilegon
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering

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Studi Kinetika dan Penentuan Dosis Optimum Koagulan FeCl3 dalam Menurunkan Konsentrasi Cu2+ pada Larutan Muhammad Seachan Fadila; Moh. Azhar Afandy; Suhirman Suhirman; Muhammad Iqbal Al Fuady
REACTOR: Journal of Research on Chemistry and Engineering Vol 4, No 2 (2023): Published in December 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v4i2.100

Abstract

This study aims to determine the efficiency and adsorption capacity of various concentrations of FeCl3 coagulants (100-300 mg/L) to reduce Cu2+ concentrations in wastewater as well as the kinetic parameters that affect the adsorption mechanism in the coagulation process when coagulant particles added to wastewater will stick to the surface of colloidal particles, which will then change the charge. Several adsorption kinetics models employed in this study include Pseudo-first order, Pseudo-second order, Elovich, and Intra-particle diffusion. The applicability of the models produced in this work was evaluated by optimizing the non-linear equations, which provide values that are more precise and in agreement with real situations when compared to the linear kinetic models. These characteristics are measured based on the value of the coefficient of correlation (R2), Sum Square Error (SSE), and Chi-Square (x2). The results showed that the highest efficiency value of the FeCl3 coagulant was 98.705%, with the value of the adsorption capacity increasing along with the concentration of the FeCl3 coagulant. The kinetic model created in this work has a very excellent fit in terms of experimental data values and prediction data.
PENGARUH OZONISASI KERING PADA KARBON AKTIF TEMPURUNG KELAPA SAWIT MENGEMBAN PARTIKEL NANO KMnO4 UNTUK MENGOKSIDASI KONTAMINAN GAS H2S DALAM REAKTOR BATCH Suhirman Suhirman; Imam Prasetyo; Teguh Ariyanto
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.v8i4.8759

Abstract

Gas H2S merupakan salah satu gas kontaminan yang dapat dihasilkan dari kegiatan industri, ditemukan pada gas alam, produksi biogas, serta kotoran hewan. Permasalahan yang ditimbulkan oleh gas H2S adalah menyebabkan karatan pada peralatan industri, beracun, berbau, tidak ramah lingkungan dan menurunkan efesiensi pembakaran. Penghilangan gas H2S dapat dilakukan dengan oksidasi menggunakan KMnO4 dalam bentuk nano partikel yang diembankan ke dalam karbon aktif tempurung kelapa sawit (KATKS). KATKS dikenai pra-perlakuan oksidasi menggunakan H2O2 dengan tujuan meningkatkan luas permukaan dan bersifat hidrofilik agar partikel KMnO4 terimpregnasi dengan baik sehingga oksidasi gas H2S lebih optimal. Pirolisis KATKS dilakukkan dalam furnance pada suhu 820°C dengan aktivasi menggunakan steam. Pra-oksidasi menggunakan ozon kering dilakukkan dengan mengkontakkan antara 5 gram KATKS dan ozonisasi kering dengan laju alir 0.05 gram/menit dengan variasi waktu 60 dan 120 menit menghasilkan (KATKS_OzDry). Tahap selanjutnya mengimpregnasikan sebanyak 20% partikel nano KMnO4 ke dalam KATKS_OzDry yang dinamai 20%KMnO4/KATKS_OzDryuntuk mengoksidasi gas H2S berkonsentrasi 110,07 ppm. Perlakuan pra-osidasi menggunakan ozonisasi kering menambah gugus OH dan C=O, membentuk sifat hidrofilik (sudut <90°) dan mempengaruhi oksidasi gas H2S dimana waktu pra-oksidasi 60 dan 120 menit secara berturut-turut menurunkan gas H2S sebesar  83 % dan 67%. Kata kunci: H2S, KMnO4, Tempurung Kelapa Sawit, Confinement, Ozonisasi
Kinerja Continuous Electrochemical Clarifier (CEC) sebagai Teknologi Pengolahan Air Sumur Berkadar Besi dan Mangan Tinggi Menjadi Air Bersih Suhirman Suhirman; Tubagus Fadhli Robby; Mutia Amyranti
UNISTEK Vol. 13 No. 1 (2026): Februari - Juli 2026
Publisher : UNIVERSITAS ISLAM SYEKH YUSUF TANGERANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33592/unistek.v13i1.8449

Abstract

Groundwater from the Klawas area, Muara Enim, South Sumatra, at a depth of approximately ?110 m, exhibits a reddish-brown coloration, indicating high concentrations of iron (Fe) and manganese (Mn). Preliminary analysis showed that the water quality did not meet the clean water standards stipulated in Regulation of the Indonesian Ministry of Health (Permenkes) No. 2 of 2023, as indicated by a turbidity of 30.1 NTU, TDS of 18.6 mg/L, Fe concentration of 3.5 mg/L, Mn concentration of 0.55 mg/L, and the presence of E. coli (25 MPN/100 mL) and total coliform (5 MPN/100 mL). Water treatment was conducted using a Continuous Electrochemical Clarifier (CEC) with a capacity of 3 m?/h, consisting of three main stages: aeration as primary treatment, an electrochemical clarifier to reduce turbidity and TDS, and silica filtration followed by electrodisinfection to remove pathogenic microorganisms. The Continuous Electrochemical Clarifier (CEC) system proved effective in treating groundwater from Klawas into clean water that complies with Permenkes No. 23 of 2017 and Permenkes No. 02 of 2023. The aeration unit reduced iron and manganese concentrations to <0.001 mg/L and <0.1 mg/L, respectively, while the clarifier operated at an optimum dose of 350 Farad and the filtration unit reduced turbidity and TDS to <0.001 ? 0.01 NTU and 12.50 ? 0.10 mg/L. In addition, the electrodisinfection unit successfully eliminated E. coli and total coliform to 0 MPN/100 mL.
Co-Authors Imam Prasetyo Moh. Azhar Afandy Muhammad Iqbal Al Fuady Muhammad Seachan Fadila Mutia Amyranti Teguh Ariyanto Tubagus Fadhli Robby