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All Journal Konversi Indonesia Chimica Acta Jurnal Agritechno
Widiyanti, Setyo Erna
Teknik Kimia, Politeknik Negeri Ujung Pandang, Jl. Perintis Kemerdekaan KM. 10 Tamalanrea, Makassar, 90245, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Engineering Environmental Science

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OPTIMIZATION OF THE ALUMINUM SULFATE AND PAC (POLY ALUMINUM CHLORIDE) COAGULANT ON TELLO RIVER WATER TREATMENT Widiyanti, Setyo Erna
Konversi Vol 7, No 1 (2018): ARTICLE IN PRESS
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v7i1.4843

Abstract

Abstract- Tello River water used by PT. PLN SULTANBATARA for sanitation and process water. One of the processs water is boiler feed water. River water has fluctuative characteristics depending on the season that occurs such as turbidity and Total Suspended Solid (TSS). The presence of TSS in boiler feed water needs to be minimized as it can decrease boiler performance in generating heat. The concentration of TSS in river water can be removed by coagulation and flocculation method with the addition of coagulant. Excessive coagulant distribution will increase the concentration of dissolved solids (TDS) of water. Thus, it is necessary to determine the optimum concentration of coagulant based on initial TSS concentration of river water. The objective of this research is to determine the optimum concentration of Aluminum Sulfate (Al2(SO4)3) and PAC (Poly Aluminum Chloride) Coagulant in reducing TSS water of Tello River. The sample used in this research is Tello river water which has an initial TSS concentration of 150 mg/L. The coagulant used was Aluminum Sulfate and PAC with several concentration variation of 5% - 40% to the initial TSS concentration of river water. Analysis of TSS content of samples using Gravimetry method. The optimum concentration of coagulant Aluminum Sulfate and PAC was 35% and 25% to the initial TSS concentration of river water where the final concentration of TSS obtained was 20 mg/L and 15.5 mg/L with percent TSS removal of 86.67% and 89.6 %. Keywords:      Total Suspended Solid, Coagulation, Aluminium Sulfate, Poly Aluminium Chloride (PAC)
OPTIMIZATION OF THE ALUMINUM SULFATE AND PAC (POLY ALUMINUM CHLORIDE) COAGULANT ON TELLO RIVER WATER TREATMENT Setyo Erna Widiyanti
Konversi Vol 7, No 1 (2018): April 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v7i1.4843

Abstract

Abstract- Tello River water used by PT. PLN SULTANBATARA for sanitation and process water. One of the process's water is boiler feed water. River water has fluctuative characteristics depending on the season that occurs such as turbidity and Total Suspended Solid (TSS). The presence of TSS in boiler feed water needs to be minimized as it can decrease boiler performance in generating heat. The concentration of TSS in river water can be removed by coagulation and flocculation method with the addition of coagulant. Excessive coagulant distribution will increase the concentration of dissolved solids (TDS) of water. Thus, it is necessary to determine the optimum concentration of coagulant based on initial TSS concentration of river water. The objective of this research is to determine the optimum concentration of Aluminum Sulfate (Al2(SO4)3) and PAC (Poly Aluminum Chloride) Coagulant in reducing TSS water of Tello River. The sample used in this research is Tello river water which has an initial TSS concentration of 150 mg/L. The coagulant used was Aluminum Sulfate and PAC with several concentration variation of 5% - 40% to the initial TSS concentration of river water. Analysis of TSS content of samples using Gravimetry method. The optimum concentration of coagulant Aluminum Sulfate and PAC was 35% and 25% to the initial TSS concentration of river water where the final concentration of TSS obtained was 20 mg/L and 15.5 mg/L with percent TSS removal of 86.67% and 89.6 %. Keywords:      Total Suspended Solid, Coagulation, Aluminium Sulfate, Poly Aluminium Chloride (PAC)
OPTIMASI PROSES KOAGULASI MENGGUNAKAN CAMPURAN KOAGULAN ALUMINIUM SULFAT DAN POLY ALUMINIUM CHLORIDE (1:1) PADA PENGOLAHAN AIR SUNGAI TELLO Setyo Erna Widiyanti; Pabbenteng Pabbenteng; Eko Wardana Saputra; Andi Nurul Islamiati
Konversi Vol 8, No 1 (2019): April 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v8i1.6515

Abstract

Abstrak- Koloid dan padatan total tersuspensi (TSS) dalam air dapat dihilangkan dengan proses koagulasi dan flokulasi. Konsentrasi koagulan dan pH merupakan dua parameter terpenting dalam keberhasilan proses koagulasi dan flokulasi. Tujuan dari penelitian ini adalah optimasi pH proses koagulasi dan flokulasi menggunakan campuran koagulan Alum dan PAC (1:1) untuk menghilangkan TSS air sungai Tello. Sampel yang digunakan dari penelitian ini adalah Air Sungai Tello yang memiliki konsentrasi TSS awal 195 mg/L. Konsentrasi campuran koagulan Alum dan PAC (1:1) yang digunakan sebesar 25% dari konsentrasi TSS awal sampel. Kondisi proses koagulasi dan flokulasi yang digunakan adalah pengadukan cepat (koagulasi) dengan kecepatan pengadukan 350 rpm selama 1 menit, pengadukan lambat (flokulasi) dengan kecepatan pengadukan 50 rpm selama 20 menit, dan pengendapan selama 30 menit. Proses koagulasi dan flokulasi dilakukan pada kisaran pH 4-10 dan konsentrasi TSS dianalisa menggunakan metode Gravimetri. pH proses koagulasi dan flokulasi dan persen (%) removal TSS optimal pada pH 6 dengan persen (%) removal TSS sebesar 98,20%. Kata kunci: Alum, Koagulasi, PAC, pH, TSS 
SYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES USING TEAK LEAF EXTRACT Tectona grandis Muhammad Yasser; Setyo Erna Widiyanti; Abdur Rahman Arif
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6408

Abstract

Teak leaf extract has been successfully used in the synthesis of gold nanoparticles. It is characterized by a color change of the solution from yellow to red wine after the addition of teak leaf extract to HAuCl4 and the resulting wavelengths in the range of 500-600 nm that indicates that gold nanoparticles have been formed. Growth and stability of the gold nanoparticles produced using UV-Vis Spectroscopy. During observation during 144 hours the stability of gold nanoparticles after 48 hours with a wavelength of about 567.5 -568 nm. 
Adsorption Power of Palm Shell Activated Carbon (Elaeis Guineensis) in the Filtration Process of Water Treatment: Daya Serap Karbon Aktif Cangkang Kelapa Sawit (Elaeis Guineensis) Pada Proses Filtrasi Pengolahan Air Mawardi, Rifqi; Hermansyah Fahnur; M. Ilham Nurdin; Setyo Erna Widiyanti
Jurnal Agritechno Jurnal Agritechno Vol. 17, Nomor 2, Oktober 2024
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70124/at.v17i2.1410

Abstract

The impact of water pollution can lead to ecological imbalances and act as carriers of infectious diseases. Therefore, water purification is necessary before it is used to improve water quality. One method for water purification is using activated carbon from palm oil shells (Elaeis guineensis). This study aims to determine the optimal flow rate for reducing Total Suspended Solids (TSS) and Lead (Pb) in the water filtration process. The research includes the processes of carbonization, activation, filtration, and testing. The carbonization method involves burning in a drum at approximately 350°C for about 2 hours. The palm oil shells are activated with 3M H3PO4. The filtration stage uses 30 grams of activated carbon with flow rate variations of 30, 40, 60, 80, and 100 mL/hour. Filtration is conducted for 1 hour with sampling every 10 minutes. The results show that a flow rate of 40 mL/min is optimal for reducing TSS, while a flow rate of 30 mL/min is optimal for reducing Pb.
IMPROVEMENT OF BIODEGRADABLE FOAM (BIOFOAM) CHARACTERISTICS FROM UWI TUBER (Dioscorea Alata) AND RICE STRAW CELLULOSE WITH THE ADDITION OF CHITOSAN: PENINGKATAN KARAKTERISTIK BIODEGRADABLE FOAM (BIOFOAM) DARI UMBI UWI (Deoscorea Alata) DAN SELULOSA JERAMI PADI DENGAN PENAMBAHAN KITOSAN. Rezky, Nurfatihah Rezky; Hardiansyah; Ir. Zulmanwardi; Setyo Erna Widiyanti
Jurnal Agritechno Jurnal Agritechno Vol. 17, Nomor 2, Oktober 2024
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70124/at.v17i2.1411

Abstract

Selama masih ada kehidupan maka manusia tidak bisa terlepas dari penggunaan plastik, khususnya styrofoam. Hal tersebut disebabkan karena manusia yang serba praktis dan memilih styrofoam digunakan sebagai bahan pengemas produk makanan ataupun minuman sekali pakai, baik makanan segar, olahan, maupun siap saji. Penggunaan plastik selalu bertambah tiap tahunnya. Hal ini dapat menyebabkan pencemaran lingkungan karena plastik merupakan limbah yang tidak dapat diuraikan oleh alam. Untuk mengatasi hal tersebut, maka dilakukan alternatif untuk menghasilkan kemasan yang ramah lingkungan yaitu biodegradable foam (Biofoam) yang terbuat dari bahan alami seperti pati yang dapat terurai secara alami oleh mikroba di dalam tanah. Tujuan penelitian ini 1) Menguji pengaruh penambahan polyvinil alkohol (PVOH) dan kitosan pada pembuatan biodegradable foam; 2) Menganalisis daya serap air, kuat tarik, masa urai (biodegradasi), uji FTIR (Fourier Transform Infra Red) dan SEM (Scanning Electron Microscopy) pada biodegradable foam. Metode penelitian ini diawali dengan pembuatan biofoam yang terbuat dari pati umbi uwi dan selulosa Jerami padi dan bahan pendukung lainnya dengan memperhatikan variasi rasio bahan. Pembuatan biofoam menggunakan metode thermopressing, sedangkan kualitas dari biofoam dianalisis melaui beberapa pengujian seperti uji daya serap air, uji kuat tarik, uji FTIR, uji SEM, dan uji biodegradabilitas. Berdasarkan hasil penelitian yang telah dilakukan dan pembahasan dapat disimpulkan bahwa  1) Pengaruh penambahan PVOH dan kitosan pada pembuatan Biodegradable Foam (Biofoam) memperbaiki tekstur permukaan menjadi lebih halus, dapat dilihat pada analisis SEM (Scanning Electron Microscopy), dan dapat  meningkatkan kuat tarik yaitu sebesar 3,16 N/mm2 pada rasio 35%:25% serta menurunkan daya serap air sebesar 16,815% pada rasio 25%:25%; 2) Berdasarkan hasil pengujian yang telah dilakukan diperoleh daya serap air dikisaran 16,8% - 144,9%, kuat tarik dikisaran 0,24 N/mm2 -3,16 N/mm2, dan terurai pada hari ke -14 dengan %weight loss 87, 3084%. Selain itu, melalui uji FTIR diketahui bahwa gugus fungsi yang mendominasi biofoam adalah Alkana, Alkohol, Eter, Asam Karboksilat, Ester, Amina, dan Amida. Gugus-gugus tersebut merupakan gugus gabungan dari perpaduan bahan yang digunakan dalam pembuatan biofoam.
Co-Authors Abdur Rahman Arif Andi Nurul Islamiati Eko Wardana Saputra Hardiansyah Hermansyah Fahnur Ir. Zulmanwardi M. Ilham Nurdin M. Yasser Mawardi, Rifqi Pabbenteng, Pabbenteng Rezky, Nurfatihah Rezky