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All Journal CHEMICA Jurnal Teknik Kimia Akta Kimia Indonesia Bubungan Tinggi: Jurnal Pengabdian Masyarakat BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan
Rasidah Rasidah
Program Studi Kimia FMIPA, Universitas Palangka Raya
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Energy Engineering Social Sciences Other

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THE USE OF LIQUID SMOKE AS LATEX COAGULANT FOR RUBBER FARMER GROUP IN BUKIT LITI VILLAGE, CENTRAL KALIMANTAN Lilis Rosmainar; Karelius; Rasidah; I Nyoman Sudyana; Nyahu Rumbang; Idam Sulastri
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 8 No. 2 (2020): Journal Balanga Edisi Juli-Desember 2020
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v8i2.2002

Abstract

Bukit Liti Village is one of villages located in the Kahayan Tengah Sub-district, Pulang Pisau Regency, Central Kalimantan Province. Most people there tap rubber tree simply managed to produce bokar (rubber materials). In making bokar, rubber farmers use coagulant materials that can damage the rubber quality and soak bokar in water pool/creeks which lower the rubber quality and produce bad smell. To solve the problem, a training is conducted to make a simple pyrolysis reactor to produce liquid smoke which will be used as latex coagulant preventing and reducing bad smell and improving the bokar quality. Pyrolysis reactor is made from a used oil tank, and other materials with a thermometer to measure reactor temperature. The reactor is designed to allow a minimum oxygen combustion. The production of rubber wood liquid smoke for latex coagulation process in this research with 50 kg of old rubber wood materials has obtained 125 ml liquid smoke for 4-hour production time. The use of liquid smoke as latex coagulant gives real impacts for farmers such as: environmental friendly, to prevent bacterial growth and oxidation in the latex and latex lump, to prevent and reduce bad smells of bokar from the plantation, during storage and rubber processing in the rubber processing factory. The technology advantages of the liquid smoke are: faster coagulation, high elasticity, able to increase dry rubber content, relatively same price with other coagulant, to increase quality and selling price, produce clean latex and free of environment pollutant.
TRAINING ON BIOGAS PRODUCTION FROM MANURE AND CONCRETE BRICK PRODUCTION TO IMPROVE THE ECONOMY OF CITIZEN IN DANAU SADAR VILLAGE, CENTRAL KALIMANTAN Lilis Rosmainar; Karelius; Rasidah; Akhmad Damsyik; I Made Sadiana; Revianti Coenraad; Tia Monika
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 9 No. 1 (2021): Journal Balanga Edisi Januari-Juni 2021
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v9i1.2954

Abstract

Danau Sadar Village is a village located in the sub-district of Dusun Selatan, 8 km from Buntok, the capital of South Barito Regency. This village has several potentials such as rubber plantation, livestock sector, tourism, and fisheries sector. Even though this potential is quite remarkable, the citizen welfare is still in low catagories due to the lack of skill in managing it. This condition happened because not all workers are engaged in the production process. Related to the condition of the community in Danau Sadar Village, an idea emerged to empower the community, by providing training to improve their skills. The objectives of community service in Danau Sadar Village are as follows: (1) assisting the people of Danau Sadar Village in developing economic independence; (2) improving entrepreneurial skills through the training provided. The community service program has been successful by carrying out two types of training activities to improve citizen welfare: training on biogas reactors from manure and brick making to obtain optimal products in terms of production costs and quality. The citizen in Danau Sadar Village welcomes this community service program. They hope that Palangka Raya University will carry out the community service program regularly in their village.
Kinetics of 4-Nitrophenol Reduction with Black Tea Extract Conjugated Silver Nanoparticle Catalyst Rokiy Alfanaar; Yuyun Yuniati; Devi Natalia; Rasidah Rasidah; Lilis Rosmainar; Pandu Gizta Rapi Paksi; Mulani Jeni Lestari Tampubolon
CHEMICA: Jurnal Teknik Kimia Vol 10, No 1 (2023): April 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i1.25404

Abstract

The 4-nitrophenol reduction process is one of the slow methods. One way to increase the rate of 4-nitrophenol reduction reactions is to use a catalyst. In this study, the catalyst used was silver nanoparticles conjugated by black tea extract. The stages that have been carried out in research are the synthesis of conjugated silver nanoparticles of black tea extract, the determination of the kinetic profile of 4-nitrophenol reduction, and the study of the influence of inorganic anions on the reduction of 4-nitrophenol with the presence of silver nanoparticle catalysts. The presence of conjugated silver nanoparticles of black tea extract has been shown to increase the kinetics of the degradation reaction of 4-nitrophenol compounds to 85 times compared to without nanoparticles, by changing the value of the reaction rate constant from 0.00006 to 0.0051. The presence of inorganic anions provides information on the decrease in the rate of reduction reactions of 4-nitrophenol.
The Technology and Application of Hydroponic Vegetable Cultivation Systems Based on Solar Power Plants as an Effort to Fulfill Vegetable Needs Independently Siti Sunariyati; Rasidah Rasidah; Wilson Jefriyanto; Yunus Pebriyanto
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 6, No 2 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v6i2.11004

Abstract

The problems found at SMP Negeri 10 as the location of community service are that the condition of the land is less fertile, there is a lack of knowledge and skills regarding cultivation using a hydroponic system, and it is located in a remote area so that the vegetables consumed have always been imported from Palangka Raya City with a travel time of 1.5 hours by land and river. Electricity blackouts often occur in this area, which is quite disruptive to residents' activities. The solution to overcoming the problem is to use a hydroponic farming system that uses alternative electrical energy from solar power plants (PLTS). PLTS can be used as an alternative electrical energy source to run a hydroponic system. This PLTS was chosen because the Central Kalimantan region is a tropical area that effectively absorbs sunlight. This community service activity (PkM) aims to increase high school students' knowledge, skills, and interest in modern vegetable cultivation. The PkM team creates a guidebook to aid in the operation of hydroponic cultivation and the PLTS system, integrating training activities into project-based Merdeka Belajar activities during the implementation of community service. Monitoring and evaluation were carried out regularly until after the harvest period, and the results showed that student understanding increased to the medium-high category and attracted student interest to the excellent category.
ESTERIFIKASI ASAM HUMAT GAMBUT KALIMANTAN TENGAH SEBAGAI ADSORBEN METHYLENE BLUE Simanjuntak, Elfrida Roulina; Rasidah, Rasidah; Rosmainar, Lilis
Akta Kimia Indonesia Vol 8, No 2 (2023)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v7i2.16251

Abstract

Esterifikasi asam humat gambut Kalimantan Tengah sebagai adsorben methylene blue telah berhasil dilakukan dengan mereaksikan etanol dan katalis asam H2SO4. Proses pemisahan produk esterifikasi asam humat gambut Kalimantan Tengah dilakukan dengan metode ekstraksi pelarut menggunakan variasi perbandingan pelarut kloroform : air (1:1, 1:2, 1:4, 0:1). Dari hasil ekstraksi diperoleh bahwa esktraksi pelarut menggunakan kloroform : air 1:1  memberikan rendemen 99,86% (pH 5), 1:2  99,33 % (pH 7), 1:4 91,74% (pH 5), 0:1 99,47 (pH 7), asam humat 98,28% (pH%). Hasil karakterisasi asam humat esterifikasi menggunakan FTIR menunjukkan adanya serapan karakteristik gugus C=O dari –COOR pada daerah pita serapan 1089 cm-1 (1:1), 1100 cm-1 (1:2), 1104 cm-1 (1:4), 1059 cm-1 (0:1) yang mengindikasikan keberhasilan proses esterifikasi asam humat. Uji adsorpsi methylene blue dengan asam humat teresterifikasi dilakukan dengan variasi pH 1, 3, 5 dan 7. Hasil adsorpsi optimum diperoleh menggunakan rasio pelarut ekstraksi kloroform : air (1:1) dengan persen penyisihan 99,86% dan kapasitas adsorpsi maksimum sebesar 454,54 mg/g pada pH 5. Adsorpsi methylene blue menggunakan adsorben asam humat tereserifikasi terjadi secara fisisorpsi dengan nilai konstanta kesetimbangan sebesar 0,3666 L/mg yang mengikuti pola isoterm adsorpsi Langmuir mengasumsikan bahwa adsorpsi terjadi secara monolayer dimana hanya terdapat satu lapisan molekul pada permukaan adsorben yang diserap.Kata kunci: Asam Humat, methylene blue, esterifikasi
Co-Authors Akhmad Damsyik Alfanaar, Rokiy Devi Natalia I Made Sadiana I Nyoman, Sudyana, Idam Sulastri Karelius Karelius Lilis Rosmainar Lilis Rosmainar Lilis Rosmainar Mulani Jeni Lestari Tampubolon Nyahu Rumbang Pandu Gizta Rapi Paksi Revianti Coenraad Simanjuntak, Elfrida Roulina Siti Sunariyati Tia Monika Wilson Jefriyanto Yunus Pebriyanto Yuyun Yuniati