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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Serambi Engineering
Novirina Hendrasarie
Universitas Pembangunan Nasional Veteran Jawa Timur
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Engineering Environmental Science

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Penurunan Kadar Mikroplastik Tipe Serat Pada Limbah Laundry Dengan Metode Elektrokoagulasi Putri Nur Rizkia; Novirina Hendrasarie
Jurnal Serambi Engineering Vol 7, No 3 (2022): Juli 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i3.4536

Abstract

Increased levels of fiber-type microplastics in waters caused by waste can disrupt the ecosystem in the water and human life. Fiber type microplastics with a size of 3 nm-15 mm, have hydrophobic properties that can bind harmful substances such as Dichloro Diphenyl Trichloroethan (DDT). There is one treatment that can be used to reduce microplastics by  electrocoagulation process. This research was run to determine the effectiveness of reducing the levels of fiber-type microplastics by electrocoagulation processing and aluminium as the electrodes, as well as the flocculation coagulation process with PAC coagulant as a control variable. electrocoagulation process with a current of 6 Ampere; 7 Ampere; 8 Ampere; and 9 Ampere. From the research, it was found that the most effective variation of current was 6 Ampere with a removal percentage of 90% with a zeta potential value of +0.421 mV. The research using the coagulation-flocculation process with PAC coagulation at a dose of 46.4 mg/l with a stirring speed during coagulation of 400 rpm for 0.5 and flocculation of 40 rpm for 20 minutes and a decrease of 30 minutes, decreased levels of microplastic 71% with a zeta potential value of -7,5 mv.
Kombinasi Green Coagulant dan Adsorben GAC (Granular Activated Carbon) Sebagai Pengolahan Limbah Cair Batik Farhan Athallah Ajiputra; Novirina Hendrasarie; Raden Kokoh Haryo Putro
Jurnal Serambi Engineering Vol 7, No 4 (2022): Oktober 2022
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v7i4.4726

Abstract

The batik industry, especially in the Jetis Sidoarjo batik home industry, in its production has several processes that produce waste in the form of waste, both in the form of solid, liquid and gas. This can cause pollution and have a direct impact on the surrounding environment, so the waste produced must first be treated before being discharged into the waters. This study aims to determine the level of effectiveness of each ingredient as a natural coagulant as well as the adsorption process in reducing levels of pollutant parameters, including Total Suspended Solid (TSS) and color in the liquid waste of the Jetis Sidoarjo batik industry. The method used is coagulation flocculation. The results of the best combination of green coagulant Moringa seeds pH 8 at a dose of 3500 mg/L, coconut coir pH 6 at a dose of 3500 mg/L, and dry gambas pH 6 at a dose of 3500 mg/L with GAC 50 gr and a sampling time of 60 minutes showed a decrease in the content of TSS parameters. and color respectively TSS 14 mg/L; color 84 Pt-Co, TSS 10 mg/L; color 54 Pt-Co TSS 26 mg/L; color 161 Pt-Co.
Phytoplankton Diversity as Bioindicator of Water Quality in Mangrove Area of Surabaya East Coast Novirina Hendrasarie; Sucahyaning Wahyu Trihastika Kartika
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 21, No 1 (2024): March 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v21i1.237-248

Abstract

Mangrove forests in Surabaya's estuaries and coastal areas are designated by the government as protected areas. However, in the last decade, water pollution in the estuary and coastal areas of Surabaya has increased. This is due to rivers and tributaries that lead to the estuary carrying garbage and waste, as a result the waters in the mangrove area began to be polluted. The purpose of this study was to map water pollution in the Mangrove area, using the plankton diversity index. This diversity is based on the sensitivity of plankton, so it is used as a bioindicator of water pollution. This study, conducted in the estuary and along the East Coast of Surabaya. The results showed 70% of phytoplankton abundance in Wonorejo Mangrove is influenced by the value of COD, TSS, salinity, and phosphate. The estuary and coastal Mangrove Gunung Anyar 92% is influenced by the parameter values of temperature, COD, current strength, and salinity. Bacillariophyceae and Coscinodiscophyceae were the dominant phytoplankton in the Wonorejo and Gunung Anyar mangrove areas, respectively. The dominance of these two plankton, which were able to survive, indicates that the water quality in the Wonorejo and Gunung Anyar estuaries is polluted.
Co-Authors Farhan Athallah Ajiputra Putri Nur Rizkia Raden Kokoh Haryo Putro Sucahyaning Wahyu Trihastika Kartika