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Degradasi Zat Organik Pada Limbah Cair Industri Kelapa Sawit Oleh Mikroalga Hijau Elvitriana Elvitriana; Erman Munir; Delvian Delvian; Hesti Wahyuningsih
Jurnal Serambi Engineering Vol 1, No 2 (2017)
Publisher : Fakultas Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32672/jse.v1i2.497

Penelitian ini bertujuan untuk mempelajari kemampuan mikroalga dalam mendegradasi zat-zat organik pada Palm Oil Mill Effluent (POME) sebagai upaya memperbaiki kualitas limbah cair industri kelapa sawit. Kultivasi mikroalga dilakukan untuk menurunkan zat organik (nutrien) dalam POME pada konsentrasi yang berbeda menggunakan pencahayaan dan aerasi terhadap pertumbuhan biomassa alga yang dihasilkan. Berdasarkan hasil penelitian menunjukan bahwa pertumbuhan mikroalga hijau terbaik dengan kandungan biomassa tertinggi diperoleh dalam kultur konsentrasi 30 % dan pencahayaan 4x8 watt selama 8 jam, biomassa alga yang diperoleh adalah 1,20 g-BK/L. Proses metabolisme sel membuktikan bahwa mikroalga hijau mampu mendegradasi zat-zat organik (nutrien) dalam POME mencapai 40 - 80 % dengan menurunnya konsentrasi COD dan BOD. Hasil penelitian menyimpulkan bahwa mikroalga dapat digunakan sebagai salah satu alternative dalam pengolahan limbah cair industri kelapa sawit.

ANALISI PENGETAHUAN, PERILAKU DAN DUKUNGAN PEMERINTAH TERHADAP PENGELOLAAN SAMPAH DI KABUPATEN LABUHANBATU UTARA Rahman Al Faris; Hamdani Harahap; Hesti Wahyuningsih
Jurnal Ilmu Lingkungan Vol 16, No 2 (2022): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.16.2.p.120-127

This study aims to analyze the effect of knowledge, behavior, and government support on waste management in Labuhanbatu Utara. This study uses research methods to analyze numerical dataprocessed by statistics. This study tries to see the relationship between exogenous variables (X), namely knowledge (X1), behavior (X2), and government support (X3) on endogenous variables (Y), namely waste management. The population in this study is thosin the area of TPA waste management. The population selected is the people of Wonosari Village, Kualuh Hulu District and Damuli Kebun Village, Kualuh Selatan District. The study's results show its effect on waste management in Labuhanbatu Utara Regency. Behavior affects waste management in Labuhanbatu Utara Regency. Good or bad behavior owned by the community, especially regarding waste, affects waste management. Government support does not affect waste management in Labuhanbatu Utara Regency. The support provided by the government could not improve waste management.

Effect of Fermented Feed on Cattle Weight at Pondok Rawa Village, Deli Serdang Regency, North Sumatera Hesti Wahyuningsih; Hotnida Sinaga; Liana Dwi Sri Hastuti; Fachri Fauzi; Wulan Apridamayanti; Silfy Anisa Nasution; Wira Khairulsyah; Arbi Maulana
Berkala Ilmiah Biologi Vol 14 No 2 (2023)
Publisher : Fakultas Biologi Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/bib.v14i2.6571

Abstract: Cattle farming in Indonesia, especially in North Sumatra, is still a secondary livelihood for breeders. Treatment and processing of beef are generally done in the traditional way. The success of the beef cattle business is very dependent on the fulfillment of nutrients that affect livestock health. Therefore, quality and sustainable feed is an important factor in livestock cultivation technology. The purpose of this study was to determine the effect of fermented feed on cattle weight at a small cattle farm in Pondok Rawa Village, Deli Serdang Regency, Sumatera Utara. Fermented feed is formulated by mixing corn ash and palm oil cake (5:1), coarse salt, molasses, and EM4 into chlorine-free water. The feed was stored in PP plastic and incubated for 7 days. Five cows chosen randomly were given fermented feed every day for 1 month while the other 5 cows were only given forage. All test cattle were about 4 years old and weighed weekly and the data were statistically analyzed using ANOVA in JASP 0.16.4. The results showed that the average weight gain of one cattle fed with fermented feed (1.54 kg/week) was higher than forage treatment (0.69 kg/week). This result was validated and substantiated by ANOVA test result showing that value of p < 0.05.

Evaluating Fisheries Livelihoods: Socio-Economic Dimensions and Management Challenges Pulungan, Afran Rouzani; Wahyuningsih, Hesti; Delvian
Journal of Environmental and Development Studies Vol. 5 No. 02 (2024): Journal of Environmental and Development Studies
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jeds.v5i02.16706

Fisheries management, which focuses on using fisheries resources to improve the livelihood of the fishing communities, has led to over-exploitation of fish resources on the east coast of North Sumatra. This has led to a decline in the potential of some fish species, which in turn has affected fishermen's incomes. This study aims to identify the socio-economic conditions of fishermen through the Ecosystem Approach to Fisheries Management (EAFM) and the factors that influence them. The data used are primary and secondary data, collected through observation, interviews, and literature studies. The study involved a sample of 64 fishermen from three locations along the eastern coast of Sumatra: Medan, Serdang Bedagai, and Deli Serdang. This research uses a descriptive qualitative method and the EAFM approach to analyze the social and economic conditions of fishermen in Medan, Deli Serdang, and Serdang Bedagai. The results of this study indicate that there has been a decline in the number of fishermen and the capture fisheries production at the research sites. The score of the social domain scored 55.55 (moderate), while the economic domain scored 66.67 (good) indicating effective but improvable management. The research results show that the indicators of stakeholder participation, utilization of local knowledge for fisheries management, asset ownership, and demand for fishery products are in the good category, while the indicators of fisheries conflicts and fishermen's household income are in the poor category, which needed to be the focus for improvement and enhancement.

Analysis of abundance of microplastic in fish caught in Percut Waters Angraini, Tia; Fatimah, Fatimah; Wahyuningsih, Hesti
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 13, No 2 (2024): AUGUST 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.2.33859

Plastic waste that is not managed properly will damage the environment by polluting the ecosystem. Plastic in waters can turn into micro-sized plastic waste. Plastics whose size is less than 5 mm are called microplastics. The emergence of microplastic pollutants is caused by increasing population activity in Percut Waters. Percut waters are waters located in the coastal area of North Sumatra where there are many anthropogenic activities that cause the emergence of microplastics. Microplastics can have a negative impact on exposed marine biota. Nowadays microplastics are not only found in the environment, but can also accumulate in the bodies of organisms, for example. This research aims to determine the abundance of microplastics in fish found in Percut waters. The research was carried out in October November 2022 in Percut Waters. Fish samples were caught using nets and the samples were separated from their digestive tract and diluted with the addition of NaCl and H2O2 lauric. The average abundance of microplastics in fish samples ranged from 24294 particles. The fish species where the most microplastics were found was mullet fish with 294 particles. The most common types of microplastics found in total are fiber microplastics.Keywords:MicroplasticDigestionCoastalPercut

Analysis of Water Quality Pollution Index Asahan river in Tanjungbalai City Sinulingga, Virna Br; Barus, Ternala Alexander; Wahyuningsih, Hesti
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.33274

The Asahan River, located in the Tanjungbalai city area, is used for plantation, agriculture, animal husbandry activities, toilet washing facilities, hospitals, hotels, settlements, and industry causing the decrease water quality of Asahan River. The purpose of this study was to analyze the water quality and status of the Asahan River water quality in the Tanjungbalai City Area and develop a pollution control strategy that needs to be implemented to prevent a decrease in the Asahan River water quality in the Tanjungbalai City Area. Purposive sampling technique as used to determine the sampling station. In this study, there were 6 sampling stations based on the activities of the local community with 3 repetitions of sampling. The data analysis techniques from this study are Water Quality Analysis using the Pollution Index (IP) Method and Water Pollution Control Strategy Analysis. The results of water quality analysis based on the pollution index on Asahan river water in Tanjungbalai City show that the average water pollution index is in the moderately polluted category. The maximum of river water pollution index results were at station 2 is 9,086 and the minimum of river water pollution index results were at station 5 is 6,111.Water pollution occurs due to the parameters of phosphate, detergent, oil and grease, and total coliform which have exceeded the quality standard threshold based on Government Regulation of the Republic of Indonesia Number 21 of the year 2022 concerning Management of Water Quality and Control of Class I Water Pollution.Keywords:Asahan RiverWater pollution IndexWater Quality

Analysis of Coral Reef Cover in Nias Regency, North Sumatra Simaremare, Elisabet Rosevenny; Wahyuningsih, Hesti; Aththorick, T Alief
Tunas Geografi Vol. 13 No. 2 (2024): JURNAL TUNAS GEOGRAFI
Publisher : Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/tgeo.v13i2.59317

Marine and fisheries resources in the waters of Nias Regency are one of the sectors that drive the community's economy, especially in coastal areas. Coral reefs are one of the marine ecosystems in Nias Regency that have high ecological and economic value. This research aims to evaluate the environmental conditions of coral reefs in the Nias Regency Water Area, especially in the seascape tourism zone around the waters of Onolimbu Island and Musi Island as research locations. The research was conducted from March to May 2023 in the coastal waters of Nias Regency to collect ecological and socio-economic data. Coral cover analysis was carried out using underwater photo methods and classified based on condition categories set by the Ministry of Environment. The condition of coral reefs at this research location is in the damaged to moderate category (23.47-45.13%) with an average abundance of 31.54% and is included in the medium category. The percentage of coral reef life form types consists of Dead Coral Algae (DCA) (34.86%), Hard Coral (31.81%), Sands (15.73%), Recent Dead Coral (5.84%), and the rest are Rubble, Other Biota and Rock. Coral Reefs, Coral Cover, Nias Regency

Analysis of abundance of microplastic in fish caught in Percut Waters Angraini, Tia; Fatimah, Fatimah; Wahyuningsih, Hesti
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 13, No 2 (2024): AUGUST 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.2.33859

Plastic waste that is not managed properly will damage the environment by polluting the ecosystem. Plastic in waters can turn into micro-sized plastic waste. Plastics whose size is less than 5 mm are called microplastics. The emergence of microplastic pollutants is caused by increasing population activity in Percut Waters. Percut waters are waters located in the coastal area of North Sumatra where there are many anthropogenic activities that cause the emergence of microplastics. Microplastics can have a negative impact on exposed marine biota. Nowadays microplastics are not only found in the environment, but can also accumulate in the bodies of organisms, for example. This research aims to determine the abundance of microplastics in fish found in Percut waters. The research was carried out in October November 2022 in Percut Waters. Fish samples were caught using nets and the samples were separated from their digestive tract and diluted with the addition of NaCl and H2O2 lauric. The average abundance of microplastics in fish samples ranged from 24294 particles. The fish species where the most microplastics were found was mullet fish with 294 particles. The most common types of microplastics found in total are fiber microplastics.Keywords:MicroplasticDigestionCoastalPercut

Analysis of Water Quality Pollution Index Asahan river in Tanjungbalai City Sinulingga, Virna Br; Barus, Ternala Alexander; Wahyuningsih, Hesti
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.33274

The Asahan River, located in the Tanjungbalai city area, is used for plantation, agriculture, animal husbandry activities, toilet washing facilities, hospitals, hotels, settlements, and industry causing the decrease water quality of Asahan River. The purpose of this study was to analyze the water quality and status of the Asahan River water quality in the Tanjungbalai City Area and develop a pollution control strategy that needs to be implemented to prevent a decrease in the Asahan River water quality in the Tanjungbalai City Area. Purposive sampling technique as used to determine the sampling station. In this study, there were 6 sampling stations based on the activities of the local community with 3 repetitions of sampling. The data analysis techniques from this study are Water Quality Analysis using the Pollution Index (IP) Method and Water Pollution Control Strategy Analysis. The results of water quality analysis based on the pollution index on Asahan river water in Tanjungbalai City show that the average water pollution index is in the moderately polluted category. The maximum of river water pollution index results were at station 2 is 9,086 and the minimum of river water pollution index results were at station 5 is 6,111.Water pollution occurs due to the parameters of phosphate, detergent, oil and grease, and total coliform which have exceeded the quality standard threshold based on Government Regulation of the Republic of Indonesia Number 21 of the year 2022 concerning Management of Water Quality and Control of Class I Water Pollution.Keywords:Asahan RiverWater pollution IndexWater Quality

Information Boards as Forest Conservation Campaign in Bahorok Research Center, Langkat Regency, North Sumatera Utara, Indonesia Berliani, Kaniwa; Elimasni; Jumilawaty, Erni; Nurtjahja, Kiki; Wahyuningsih, Hesti; Siregar, Etti Sartina; Nurwahyuni, Isnaini; Tanjung, Masitta; Priyani, Nunuk; Supriharti, Deny; Siregar, Julius Paolo
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 2 (2024): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v9i2.16643

Yayasan Ekosistem Lestari (YEL) in Bahorok Research Station in Bahorok Sub-district, Langkat District, is a very important location for this work. The hilly terrain of the area provides a beautiful landscape and varied flora and fauna with the main attraction being the corpse flower (Amorphophallus sp). With a preserved natural environment and unique ecological features, this research station allows other parties to participate in protecting the area in various conservation campaign, one of which is the installation/establishment of conservation information boards. Conservation information boards can raise public awareness about the importance of protecting forests and their natural environment. Information on ecosystems, flora, fauna, management, and the importance of conservation can be conveyed through these information boards. Information boards are widely used as an educational tool for local communities and visitors to the forest at the research station. They can learn about forest ecology, the negative impacts of deforestation, and sustainable ways of utilizing forest resources. They can learn about forest ecology, the negative impacts of deforestation, and sustainable ways of utilizing forest resources. Information boards can also be used to invite community participation in conservation efforts, which is expected to improve the quality of knowledge and understanding of conservation areas for communities, researchers, and tourists. Therefore, the installation/establishment of conservation information boards needs to be carried out at Bahorok Research Station, Batu Katak as one of the campaign and solutions to maintain the natural conditions in the forest and river.

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