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EFEKTIVITAS RUMPUT BEBEK (Lemna minor) DALAM PENYISIHAN KADMIUM (Cd) DAN CHEMICAL OXYGEN DEMAND (COD) PADA LINDI TPA SAMPAH GAMPONG JAWA KOTA BANDA ACEH Juliansyah Harahap; Irhamni; Nazri Adhlani; T. Muhammad Ashari
Lingkar : Journal of Environmental Engineering Vol 3 No 2 (2022): LINGKAR : Journal of Environmental Engineering
Publisher : Program Studi Teknik Lingkungan Fakultas Sains dan Teknologi UIN Ar-Raniry Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (457.034 KB) | DOI: 10.22373/ljee.v3i2.2304

Abstract

Lemna minor plant have the ability to reduce pollutant levels in Landfill leachate. The use of Lemna minor in leachate treatment was considered effective in degrading Cd and COD pollutants. The objective of this study was to determine the effectiveness and absorption rate of Lemna minor in degrading heavy metal Cd and reducing COD levels in Gampong Jawa Landfill leachate. This study used the phytoremediation method on a laboratory scale, and the leachate sampling method used the grab sampling technique. In testing both parameters, two types of test variations were carried out. First, in Reactor I, it was carried out without using an aerator, and in Reactor II, the test was carried out with the addition of an aerator. For duration, the variations of retention time were used are the third, sixth, ninth, and 12th days. The weight of the Lemna minor were used in each reactor was 35 grams for a leachate volume of 5 Liters. The results showed that Lemna minor was able to reduce pollutant levels in the Gampong Jawa Landfill leachate with the most optimal proportion of 15.92% for the heavy metal Cd, and 94.68% for the organic pollutant COD. Treatment on the 12th day for tests carried out in reactors that have an aeration system was the most effective variation in reducing the levels of Cd and COD parameters. Keywords : Lemna minor, Landfill Leachate, Phytoremediation
The Efficacy of Anaerobic Biofilter and Pre-Aeration with Microbubble Generator for Tofu Wastewater Treatment Harahap, Juliansyah; Ardhianto, Rachmad; Muliadita, Tiara Sekar; Mahdariza, Fathul; Ersa, Nanda Savira; Ashari, Teuku Muhammad
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 22, No 1 (2025): March 2025
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v22i1.95-108

Abstract

The majority of tofu manufacturers lack the necessary infrastructure to treat wastewater, resulting in the direct discharge of wastewater into water bodies. Such practices have the potential to results in environmental pollution. This study examines the efficacy of combining anaerobic biofilter technology and pre-aeration with a microbubble generator for the treatment of wastewater generated by the tofu industry. The research focused on the impact of hydraulic retention time (HRT) on the reduction of pollutants, specifically chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solids (TSS), and pH levels. The results indicated that prolonged HRT in the anaerobic biofilter significantly reduces pollutant concentrations. 48-hour HRT achieved reductions of 80.78% for COD, 78.53% for BOD, and 89.25% for TSS, respectively. The integration of a microbubble generator further enhanced treatment efficiency. The combination of a 48-hour anaerobic biofilter and a 180-minute microbubble generator achieved reductions of 93.82% for COD, 93.11% for BOD, and 97.5% for TSS. The effluent consistently met the pH quality standards set by the Indonesian government. The findings suggest the potential for optimizing retention times and combining anaerobic and aerobic treatments to address wastewater challenges in the tofu industry. 
PENGGUNAAN EKSTRAK KULIT SINGKONG (Manihot esculenta) SEBAGAI BIOKOAGULAN UNTUK MENURUNKAN PARAMETER PENCEMAR PADA LIMBAH CAIR RUMAH PEMOTONGAN AYAM Ashari, Teuku Muhammad; Hidayat , Fadhillah Ridha; Rohendi, Aulia
AMINA Vol. 5 No. 2 (2023): August 2023
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/amina.v5i2.4128

Abstract

Air limbah Rumah Pemotongan Ayam (RPA) terlebih dahulu harus diolah sebelum dibuang ke badan air. Penelitian ini bertujuan untuk menurunkan kadar pencemar dalam air limbah RPA sesuai dengan baku mutu air limbah. Dalam penelitian ini dilakukan proses pengolahan air limbah RPA secara koagulasi-flokulasi dengan menggunakan biokoagulan ekstrak kulit singkong untuk menurunkan kadar pH, kekeruhan, TSS dan COD pada limbah RPA. Hasil penelitian menunjukkan bahwa dosis biokoagulan ekstrak kulit singkong berpengaruh terhadap perubahan parameter pH, kekeruhan, TSS dan COD. Pengujian dilakukan dengan memvariasikan dosis biokoagulan yaitu 0 ml, 5 ml, 10 ml, 15 ml, 20 ml dan 25 ml. Hasil penelitian menunjukkan bahwa penurunan nilai pH, kekeruhan, TSS dan COD paling optimum terjadi pada dosis biokoagulan 5 ml. Dosis biokoagulan sebanyak 5 ml mampu menurunkan nilai pH menjadi 7,5, menurunkan nilai kekeruhan menjadi 172,7 NTU dengan efisiensi sebesar 60,48%, menurunkan kadar TSS menjadi 220 mg/L dengan efisiensi 69,01% dan menurunkan COD menjadi 1.279 mg/L dengan efisiensi 34,97%. Biokoagulan ekstrak kulit singkong dapat menurunkan parameter pencemar pada limbah cair RPA, namun penurunan yang memenuhi baku mutu hanya pada parameter pH dan untuk parameter kekeruhan TSS dan COD mengalami penurunan namun belum memenuhi baku mutu air limbah RPA yang telah ditetapkan oleh Peraturan Menteri Lingkungan Hidup Republik Indonesia No. 5 tahun 2014 Tentang Baku Mutu Air Limbah.