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PEMBUATAN PEREKAT LIGNIN RESORSINOL FORMALDEHID DARI NATRIUM LIGNOSULFONAT TANDAN KOSONG KELAPA SAWIT Siti Maysarah, Netti Herlina
Jurnal Teknik Kimia USU Vol 4, No 4 (2015)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.335 KB) | DOI: 10.32734/jutek.v4i4.12028

Abstract

Oil palm empty fruit bunchesn are waste from palm oil mill utilization is still limited. Lignin utilization of oil palm empty fruit bunhes made of natural adhesive manufacture. Making adhesive is carried out in several stages namely the manufacture of powder oil palm empty fruit bunches free extractives, lignin isolation, the manufacture of sodium lignosulfonate, sodium purification lignosulfonate and the manufacture of adhesive. Making the lignin resorcinol formaldehide adhesive is done by differences sodium lignosulfonate : resorcinol : formaldehyde mole ratio are ratio 1:1:1, ratio 1:1:2 and ratio 1:1:3. The results obtained from testing the appearance of the adhesive has a blackish brown color. pH of each ratio is ratio 1:1:1 11,2, ratio 1:1:2 11,4 and ratio 1:1:3 12,0. Adhesive densities are ration 1:1:1  1,2857, ratio 1:1:2  1,2119, and ratio 1:1:3  1,3097. Viscosities are ratio 1:1:1  108,83 cps, ratio 1:1:2  94,31 cps and ratio  1:1:3 129,92 cps. The rest of the evaporation are ratio 1:1:1  50,77%, ratio 1:1:2  42,35% and ratio 1:1:3 41,01%. Test results compared with standard phenol formaldehyde which is SNI 06-4567-1998 liquid phenol formaldehyde and result ratio 1:1:3 the best of  another ratio .
PEMBUATAN BIOETANOL DARI NIRA AREN (Arenga pinnata Merr) MENGGUNAKAN Saccharomyces cerevisiae Meilani M Manurung, Gusti Handayani, Netti Herlina
Jurnal Teknik Kimia USU Vol 5, No 4 (2016)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jutek.v5i4.12716

Abstract

Bioethanol was an alcohol substance which can be obtained by biomass fermentation process. The purpose of this study was to determine the effect of agitation and volume of starter on yield and concentration of bioethanol produced from palm juice (Arenga pinnata Merr). Catalyst used was Saccharomyces cerevisiae. Observed variables were agitation and volume of starter in anaerobic fermentation. The experiment started with preparation of a starter followed by fermentation process. The product obtained from distillation process at temperature of 88 °C. The results showed that the higher agitation speed and volume of starter, yield and concentration of bioethanol will be higher. The highest concentration and yield obtained on the condition at a agitation of 100 rpm and 35% starter amounted to 47.618% (v/v) and 48.1411%. If it exceed that point, the changes of agitation and the addition of starter did not increase the concentration and yield of ethanol produced. 
IMPLEMENTASIKEBIJAKAN RUANG PUBLIK TERPADURAMAH ANAK (RPTRA) DI RPTRA UTAMA CENGKARENG JAKARTA BARAT Netti Herlina
Jurnal Ilmiah Pendidikan Lingkungan dan Pembangunan Vol 19 No 1 (2018): PLPB: Jurnal Pendidikan Lingkungan dan Pembangunan Berkelanjutan, Volume 19 Nomo
Publisher : Program Studi Pendidikan Kependudukan dan Lingkungan Hidup

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (290.301 KB) | DOI: 10.21009/PLPB.191.03

Abstract

Abstract This research was aimed to analyzed how the implementation of integrated children friendly public area in, Cengkareng, West Jakarta. Researcher used the implementation theory from Merilee S. Grindle which consist of two variables, that was content of policy (Interest Affected, Type of Benefits, Extent of Change Envision, Site of Decision Making, Program Implementer and Resources Committed) and context of policy (Power, Interest, and Strategy of Actor Involved, Institution and Regime Characteristi and Compliance and Responsiveness). The research method used is qualitative research. While the way data collection is done by library study, field observation and interview to informants that have been predetermined.Based on this research, the implementation of the integrated public friendly children area for the fulfillment of children’s right s to the environment has been going well.
Perencanaan Sistem Pengelolaan Sampah Di PT PLN (Persero) Unit Pendidikan Dan Pelatihan Randy Zulkarnain; Robby Fiqry Maulana; Netti Herlina; Lies Setyowati
KILAT Vol 9 No 1 (2020): KILAT
Publisher : Sekolah Tinggi Teknik - PLN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (477.971 KB) | DOI: 10.33322/kilat.v9i1.747

Abstract

The source of waste produced by PT PLN (Persero) UPDL Tuntungan comes from offices and classrooms, mess and dormitories, parks and roads as well as dining rooms. We need a good waste management system planning for optimisation existing waste treatment. The research objective is to calculate the generation and composition, plan operational techniques and waste management schemes. The method of measuring the generation and composition of waste uses SNI 19-3964-1994. The results of the study showed that the solid waste generation based on the maximum capacity produced was 210.10 kg/day or 1,752.23 l/day with the composition of the solid waste produced as a whole of food remaining 11.20%, wood and plant waste 65.07%, fabric/textile 1.59%, rubber 1.26%, plastic 10.80%, metal 0.75%, glass, 1.14%, paper 5.34%, tissue 1.29%, and styrofoam 1, 56%. Garbage operational techniques that will be planned starting from storage using a 20L bin will be divided into 5 types, namely organic, plastic, paper, etc. and hazardous and toxic materials, and placed 1 container of 120L size garbage for trash from the dining room. Collection and transfer using 660L depot transfer. Transporting garbage using a 1 m3 garbage motor to the TPS for further composting and sorting. For garbage that still has a sale value, it is sold to pelapak and the residual waste is taken to the landfill.
Pengolahan sampah tepat guna pada kawasan mangrove di desa Bagan Kuala kabupaten Serdang Bedagai Ameilia Zuliyanti Siregar; M. Basyuni; Delvian Delvian; Netti Herlina; Arida Susilowati; Ridwanti Batubara; Nelly Anna; Masitta Tanjung
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 8, No 3 (2024): September
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v8i3.25333

Abstract

Abstrak Mangrove Sumatera Utara berpotensi dikembangkan sebagai edu wisata. Pengabdian Masyarakat Desa Binaan LPPM USU dilaksanakan di Pantai merdeka, Desa Bagan kuala sejak bulan April sampai dengan September 2024 kepada 30 orang ibu-ibu Pemberdayaan Kesejahteraan Keluarga (PKK), Remaja Peduli Pesisir dan Masyarakat Peduli Sampah Pesisir (MPSP) Serdang Bedagai. Tujuan pengabdian ini adalah untuk mentabulasi dan mengelola sampah dikawasan mangrove  dengan program 3R(Reuse, Reduce, Recycle) berpotensi secara ekonomis dalam meningkatkan kesejahteraan masyarakat di Serdang. Kegiatan pengabdian dilakukan dengan memberikan sosialisasi pengolahan sampah tepat guna, pelatihan program 3R dari limbah olahan hasil laut (kulit kerang, kulit kepah, tiram, dan sisik ikan). Selanjutnya dilakukan Fokus Grup Diskusi (FGD) dan Monitoring Evaluasi dalam pengolahan limbah hasil olahan laut. Dari hasil Pengabdian Desa Binaan LPPM USU, kaum perempuan dan masyarakat  memiliki pengetahuan dan keterampilan dalam pengelolaan limbah olahan hasil laut sebesar 80% dari kulit kerang, kulit kepah, sisik ikan menjadi gantungan kunci, asbak rokok, frame foto, asbak rokok, mainan depan pintu, magnetik kulkas, dan produk lainnya yang akan meningkatkan perekonomian keluarga dan kesejahteraan masyarakat di Serdang Bedagai. Kata kunci: mangrove; sampah pesisir; kulit kerang; bagan kuala; PUI mangrove AbstractNorth Syumatra North Sumatra mangroves have the potential to be developed as educational tourism. Community Service in Villages Assisted by LPPM USU was carried out at Pantai Merdeka, Bagan Kuala Village from April to September 2024 to 30 peoples of family welfare empowermetn, coastal care youth and coastal waste concern community (CWCC) of Serdang Bedagai. The aim of tabulating and managing waste in mangrove areas with the 3R (Reuse, Reduce, Recycle) program which has economic potential. in improving the welfare of the community in Serdang. Community service activities are carried out by providing socialization on appropriate waste processing, training on the 3R program from processed marine waste (shells, kepah shells, oyster, fish scales), followed by Focus Group Discussions (FGD) and Evaluation Monitoring in the appropriate processing of processed marine waste. From the results of the service community of foster village LPPM USU, especially women and community have knowledge and skillsas much as 80% in managing processed marine waste products from shells, kepah shells, fish scales into key chains, cigarette ashtrays, photo frames, cigarette ashtrays, doorstep toys, refrigerator magnets, and other products that will improve the family economy and community welfare in Serdang Bedagai Keywords: mangrove; coastal waste; seashells; bagan kuala, IFP of mangrove
Identification of the Distribution of Seawater Intrusion Using the Resistivity 2D Method in the Belawan Area, North Sumatra Province Muzambiq, Said; Husin, Amir; Herlina, Netti; Gultom, Tri Maylani
Jurnal Ilmu Lingkungan Vol 23, No 1 (2025): January 2025
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jil.23.1.85-93

Abstract

Excessive withdrawal of deep groundwater has an impact on changing the direction of groundwater flow so that the hydrostatic pressure decreases, resulting in seawater intrusion. This study aims to determine the areas indicated by seawater intrusion and determine the direction of distribution of saltwater contaminants. The method used is the Schlumberger configuration resistivity geoelectric method to obtain resistivity values with a path length of 200 meters. In the research results obtained in the field, processing using Ms. Excel and interpreted using IP2WIN.. The results of the processing using IP2WIN are then processed using Surfer to draw the correlation between Track I and Track III in 2D form. Line I which indicated seawater intrusion, namely the seventh layer with a resistivity value of 0.198 m, was designated as seawater intrusion. Track II shows seawater intrusion, namely in the sixth layer seawater intrusion is found with a resistivity value of 0.0584 m. Track III shows the presence of seawater intrusion, namely in the eighth layer seawater is found with a resistivity value of 0.0035 m. Based on the research conducted, the distribution of seawater intrusion from Track I on Jalan Raya Belawan, Belawan Harbor, Bagan Deli Village, Medan Belawan District, which is close to the beach. Seawater intrusion flows to the southwest which is the location of Track II and Track III through the groundwater layer affected by the intrusion.
Utilization of Hydrilla Verticillate in the Production of Organic Fertilizer and Horticultural Plant Cultivation in Sungai Ular Village - Secanggang, Langkat Regency, North Sumatera Anggia Sari, Yasmine; Herlina, Netti; Nurfahasdi, Meutia; Ritonga, Aulia Rahma; Pelawi, Jesica Vina; Lingga, Dilo Andrian; Sitanggang, Trie Nova Marito; Amanda, Shakina; Silaen, Yerica Magdalena
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 1 (2023): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v8i1.10323

Abstract

The scarcity of fertilizers in Indonesia makes it difficult for farmers to find alternative fertilizers, the causes are subsidized fertilizers which are difficult to obtain, and the high cost of non-subsidized fertilizers making it burdensome for farmers. Most of the community professionals in Sungai Ular Village are farmers and the lack of availability of fertilizers and the heavy economic value of inorganic fertilizers. Based on the potential of Sungai Ular Village, Secanggang District, the raw materials for making organic fertilizer can utilize Hydrilla verticillata plants, livestock faeces and rice straw. The organic fertilizer produced can be used for traditional cultivation. The results of this community service activity, in addition to ready-to-use organic fertilizers, are horticultural crops such as kale, spinach, curly red chillies, tomatoes, basil, etc. The resulting horticultural crops are expected to increase partner agricultural yields which can increase income and support the entrepreneurial spirit of partners in optimally utilizing village potential. Community Service Activities can empower the community to realise independence and prosperity and maintain environmental sustainability by reducing the use of inorganic fertilizers (chemical fertilizers) by optimally utilizing the potential of Sungai Ular Village, Secanggang District, Langkat Regency.