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Agus Mirwan
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Environmental Science

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ALUMINA RECOVERY FROM SOLID WASTE SLUDGE (SWS) PDAM BANJAR INTAN Retno Fitriana Sari; Winda Aryani Prasetyo; Agus Mirwan
Konversi Vol 6, No 2 (2017): Oktober 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v6i2.4754

Abstract

Abstract- Solid Waste Sludge (SWS) PDAM are formed by deposition of solid particles in water that has been given a coagulant such as alum and PAC (Poly Aluminum Chloride). SWS PDAM have the content of alumina (Al2O3) is quite high, making it possible to get alumina by recovery process. This research aims to study the process of recovery of alumina from SWS PDAM and determine the condition of the process to obtain optimum alumina.The process of recovery of alumina from a material divided into three main processes. First process was calcination material to break the complex bonds aluminosilicate contained in the material, in which some compound was added before calcination and to used to bind the compound alum. The second process is the solid-liquid extraction (leaching) that serves to separate the silica and alumina. Silica will precipitate and alumina will dissolve. Next process is the decomposition of hydrolysis, the compound of Al will be heated by adding water so that the hydrated form of alumina.This research was conducted with several stages. First SWS PDAM is mixed with CaCl2, by variation ratio of CaCl2:SWS PDAM are 0,5:1, 1:1 and 1.5:1, then calcined at temperature of 800oC. Calcined particle with size 200 mesh was leached by HCl with variation concentration of 4M, 6M and 8M. Solution was added to 100ml of water and heated to 100ml left. Results were analyzed as  %w / w alumina contained in the solution. The results of the best variations made to the recovery of alumina in this study is to use a variation of weight ratio 1:1 CaCl2 and SWS PDAM with HCl concentration on the leaching process of 8M obtained alumina recovery percentage 15.68%. Key words: alumina, SWS  PDAM, calcination, leaching.
PENJERNIHAN AIR SUNGAI MARTAPURA KALIMANTAN SELATAN MENGGUNAKAN LIMBAH PADAT LUMPUR PDAM Agus Mirwan
Purifikasi Vol 12 No 3 (2011): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v12.i3.77

Abstract

Penelitian ini bertujuan mendapatkan kembali koagulan cair dari Limbah padat lumpur (LPL) PDAM Intan Banjar dan membandingkan aplikasinya dengan koagulan yang ada dipasaran dalam menurunkan tingkat kekeruhan dan pH air sungai Martapura. LPL-PDAM dilarutkan dengan NaOH dalam labu leher tiga, NH4Cl dan NH4OH ditambahkan hingga terbentuk endapan Al(OH)3 kemudian disaring dan dicuci dengan NH4Cl panas 0,5N serta dikeringkan hingga terbentuk padatan kering berupa Al2O3 yang direaksikan dengan H2SO4 3M terbentuk koagulan cair. Hasil penelitian didapatkan melalui proses koagulasi, flokulasi, dan dekantasi menunjukkan LPL-PDAM dapat menjernihkan air sungai Martapura dengan tingkat kekeruhan dan pH sebesar 7,49 NTU dan 6,48 dari kondisi awal air sungai sebesar 43,40 NTU dan 6,67. Koagulan lain menunjukkan tawas padat sebesar 2,11 NTU dan 6,43; Poly Aluminium Chloride (PAC) sebesar 1,77 NTU dan 6,36; dan FeCl3 sebesar 1,82 NTU dan 6,08.
Karakteristik Karbon Aktif Teraktifasi HᴣPO4 dari Limbah Sereh (Cymbopogon S.P) Ni`mah, Lailan; Juliastuti, Sri Rachmania; Mahfud, Mahfud; Isna Syauqiah; Agus Mirwan; Harivram, Awali Sir Kautsar; Fitriati, Ulfa; Suryani, Agus
Journal of Chemical Process Engineering Vol. 9 No. 1 (2024): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i1.686

Abstract

Karbon aktif dapat diperoleh dari bahan-bahan alam (biomaterial) dengan penggunaan sebagai adsorben yang sering disebut dengan biosorben. Berbagai bahan biomaterial yang dapat dimanfaatkan sebagai karbon aktif yaitu yang memiliki kadar selulosa ataupun hemiselulosa, salah satunya yakni limbah sereh. Proses pembuatan karbon aktif dari limbah sereh melibatkan karbonisasi pada suhu 300 °C selama 2 jam dalam furnace, kemudian direndam dengan larutan H3PO4 20% selama 24 jam. Hasil pengarangan dan aktifasi dikarakterisasi dengan analisis kadar air, kadar abu, volatile matter, fixed carbon, dan bilangan iodin serta SEM-EDX untuk mengetahui topografi permukaan arang aktif, ukuran pori dan kandungan unsur pada karbon aktif. Nilai karbon (fixed carbon) pada hasil aktifasi yakni 65,47%; bilangan iodin sebesar 876,46. Rongga karbon aktif dari limbah sereh menggunakan Scanning Electron Microscopy-Energy (SEM) tampak lebih terbuka dan memanjang. Kandungan unsur dari karbon aktif limbah sereh menggunakan Dispersive X-Ray (EDX) sebesar 65,66% untuk nilai karbon (C) dan 32,45% untuk nilai oksigen (O2). Secara keseluruhan, hasil analisis proksimat dan SEM-EDX menunjukkan bahwa karbon aktif dari limbah sereh memenuhi standar SNI 06-3730-1995.
Co-Authors Harivram, Awali Sir Kautsar Isna Syauqiah Mahfud Mahfud Ni`mah, Lailan Retno Fitriana Sari Sri Rachmania Juliastuti, Sri Rachmania Suryani, Agus Ulfa Fitriati Winda Aryani Prasetyo