Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Proses
Agus Prasetya
Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada Jl Grafika No. 2 Kampus UGM, 55281 Yogyakarta
Chemical Engineering, Chemistry & Bioengineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Penurunan logam Hg dalam air menggunakan sistem sub-surface flow constructed wetland: studi efektivitas Rikhanatul Firdausy Puspitasari; Agus Prasetya; Edia Rahayuningsih
Jurnal Rekayasa Proses Vol 13 No 1 (2019): Volume 13, Number 1, 2019
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.39339

Abstract

High amount of Mercury contamination is commonly found in traditional gold mining areas. This problem might occur due to the use of amalgamation process in traditional gold extraction process by dissolving the gold-bearing rocks with mercury (Hg). The utilization of mercury in gold mining activity has contaminated the water with Hg which might lead to serious health problems. This research was carried out by discharging the Hg-contaminated wastewater to enter a system called the Sub-Surface Flow Constructed Wetland (SSF-SW). The system employed a mixture of soil and the fibers of water hyacinth as the media on which Echinodorus palaefolius L. was planted. The wastewater containing HgCl2 at 8.59 mg/L was flown. The flow rate and pH were set to 6.3 L/hour and 6-7 pH at room temperature. Samples were collected at 0; 3.5; 7; 10.5 hours every day. The SSF-CW system was continually run for 10.5 hours and 13.5hour batch. The result of this research showed that the efficiency of Hg removal reached 92.79%. The results showed that the SSF-CW offers a stable system to reduce the mercury levels as shown in the growth of the plant and the total Hg removal efficiency. Plants with Hg exposure have distinct patterns of chlorosis. Some leaves turning yellow and die, others start with new growth. In addition, the growth of Echinodorus palaefolius L. was also influenced by the amount of nutrients in the soil.
Evaluasi aspek teknis dan lingkungan instalasi pengolahan air limbah (IPAL) komunal di Kabupaten Sleman Yogyakarta Dwi Saputri; Fajar Marendra; Ahmad Tawfiequrrahman Yuliansyah; Agus Prasetya
Jurnal Rekayasa Proses Vol 15 No 1 (2021): Volume 15, Number 1, 2021
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.65833

Abstract

As the producer of waste (both in solid form and wastewater), the increase of population creates a dominant effect on environmental problems. Escalation of the amount of domestic wastewater has led to greater sanitation problems. Indonesian government has carried out several programs for improving sanitation access and facilities. Community-based wastewater treatment plant (Communal WWTP) is one of the priority programs. Sleman Regency in Special Province of Yogyakarta owns 131 communal WWTP, where the oldest one had been built in 2006 while the newest one was installed in 2018. In this study, the techno-environmental assessment of communal WWTP in the District of Sleman, Yogyakarta was carried out. Sampling selection of communal WWTPs was undertaken using Stratified Random Sampling techniques. Data collection was executed by a combination of field surveys and in depth-interview of several relevant personnel. The study was done for 30 communal WTTP in various Districts in Sleman regency. Assessment was carried out based on the Likert scale of 4. The results showed that the average score for environment aspect was 2.94 (good), while that for technical aspect was 3.52 (very good). Overall, the techno-environmental score of communal WWTP in Sleman Regency, Yogyakarta was 3.23 out of 4, which was categorized as good.
Co-Authors Ahmad Tawfiequrrahman Yuliansyah Dwi Saputri Edia Rahayuningsih Fajar Marendra Rikhanatul Firdausy Puspitasari