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THE RECLAMATION TECHNICAL PLAN ON ANDESIT MINING IN DADIREJO VILLAGE, BAGELEN DISTRICT, PURWOREJO REGENCY, CENTRAL JAVA PROVINCE , Muammar Gomareuzzaman, Boy Arif Raja ihutan Siregar , Dian Hudawan Santoso
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.6351

This research was conducted on an andesite mining area in Dadirejo Village, Bagelen District, Purworejo Regency, Central Java Province. The mine has stopped operating since 2018 until the end of 2019. Since the mining activity stopped, there have been no signs of management being carried out so that environmental degradation has occurred in the geophysical aspect at the research site. From the problems mentioned earlier, this study aims to determine the level of environmental damage in order to determine the technical planning of reclamation. The research methods used are survey and mapping to measure the level of environmental damage, laboratory analysis to determine soil fertility, appraisal to evaluate environmental damage, and data analysis to determine reclamation directions. The results of the evaluation of the level of environmental damage, the research location is classified as class III, namely the heavily damaged category with a value of 16. The reclamation direction is the manufacture of a bench terrace with a height of 2 m and a width of 4 m with a slope of 45o, a drainage channel with a height, and a holding pond. The re-vegetation technique was carried out in monoculture at a level with a spacing of cassava 0.7 mx 0.6 m, peanuts 0.4 mx 0.15 m, maize 0.2 mx 0.7 m, while the bottom of the mine was intercropped with a distance of 0.7 m. planting 1 mx 1 m.

EXTRACTION OF NATURAL COLOR OF BUTTERFLY PEA (CLITORIA TERNATEA L) WITH VARIABLES pH-TEMPERATURE AND CONCENTRATION FOR FOOD COLORING Sugiarto, Bambang; Rirung, Yustin; Ardiyani, Anita Nur; Achmad, Zubaidi
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.6364

Anthocyanins are chemical compounds contained in a plants. Anthocyanin pigments are water soluble and have pink, red, purple, blue, and yellow colors. Anthocyanins act as a natural food coloring in the form of dry powder or concentrated liquid. The production of anthocyanins from butterfly pea as a natural dye is currently not maximized yet. The anthocyanin extraction process in this study was carried out by heating the butterfly pea using aquadest as a solvent. The purpose of this study is to find the optimum conditions for extracting anthocyanins from butterfly pea, to learn the effect of temperature and pH on the absorbance and color values of the butterfly pea extract with distilled water, as well as its application as a natural dye in food. In this study, it was found out that the optimum concentration was obtained at a ratio of 15 grams:500 ml (weight of butterfly pea:solvent volume) at pH 4. This proves that the concentration will increase along with the increase in the absorbance value. The optimum concentration value occurs at a temperature of 60°C. While the lowest transmittance value was obtained in the sample with a ratio of 15 grams: 500 ml (weight of telang flower: volume of solvent) at pH 4 and a temperature of 60°C. This proves that the transmittance value is inversely proportional to the concentration value. The butterfly pea extract that obtained at pH 4 produced a bluish purple color, pH 5 produced a purplish blue color, pH 6 produced a light blue color, pH 7 produces a blue color, pH 8 produces a bluish green color, and pH 9 produces a green color.

EVALUATION OF TREATMENT DRINKING WATER TREATMENT (IPAM) INSTALLATION OF SUGIHAN PDAM TIRTA WIJAYA, CILACAP REGENCY Grantaka, Akbar Maulana; Hastutiningrum, Sri; Sudarsono, Sudarsono
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.6365

Water is one of the important factors in fulfilling human needs. The existence of water on earth is very abundant but the quality doesn't meet the standards. The system value of a DWTP can be seen from 3 aspects, quality, quantity, and continuity of water produced. Dry season, increasing population, and the age of DWTP are things that will be faced in maintaining the three aspects of value. Seeing the several conditions experienced by PDAM Tirta Wijaya, it is necessary to conduct an evaluation to determine the performance of each unit, the quality of raw and production water, the fulfillment of water needs, the operation during the dry season and the optimization that needs to be done. The method used is direct observation to DWTP Kesugihan. The results of the evaluation of DWTP Kesugihan are that the flocculation, sedimentation and filtration units is not comply with SNI 2774-2008, the water demand in 2029 is 1170.7 L/second. From this study it can be concluded that the performance of the DWTP unit is categorized as quite good, the quality of raw water is still worthy of consideration, the quality of production water has met the quality standards, DWTP Kesugihan has not been able to fulfill water needs in 2029 as much as 80% coverage, there is no operational standard during the dry season. Optimization of DWTP Kesugihan by increasing the height of the filtration unit to 6.5 m, the nozzle diameter to 0.05 m and the number of nozzles to 500 and making SOPs for the dry season

MEASURING THE LEVEL OF LAND DAMAGE DUE TO SAND AND GRAVEL MINING IN DUSUN SIDOREJO, TALUN VILLAGE, KEMALANG DISTRICT, KLATEN REGENCY OF CENTRAL JAVA Elma, Irfan Dzaky; Prasetya, Johan Danu; Asrifah, Dina
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.6368

Mining activities are quite a lot carried out by the people of Dusun Sidorejo, the mining is a sand and gravel mine. Sand and gravel mine in the process causes changes in shape of the landscape that have an impact on land damage. This research aims to determine the level of land damage caused by mining activity. The method used in this research is quantitative with observation, mapping, and land damage analysis which refers to Keputusan Menteri Lingkungan Hidup No. 43 Tahun 1996, with the parameters used is the height of the excavated cliffs, the slope of the excavated cliffs, the relief of the excavation base, vegetation cover, and management of top soil and overburden. Based on the measurement results of each parameter used, It was found that the level of damage that occurred at the research site was in the form of heavy damage. Effort to improve the mining site at the research area carried out by making bench terraces and revegetation using sengon tree, adjusted to the applicable regulations, KepMen LH No. 43 Tahun 1996

RCP GAS FIELD DEVELOPMENT PLAN TO FULLFILL GAS SALES AGREEMENT PLAN Herianto, Herianto; Kristianto, Dedi; Rahmawan, Dhimas Arief
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7319

The RCP field is an exploration field which is currently in the early development stage. From the drilling of exploration wells, a gas reservoir has been found in the Basal Sand formation. The Basal Sand Formation itself is a fairly deep formation and includes a large reservoirhigh pressure high temperature(HPHT). This RCP field hasInitial Gas Inplace IGIP) of 1202 Bcf. Currently there is a demand for gas supply of 50 MMSCFD for 10 years, so it is necessary to evaluate as a supporter of the Gas Sale and Purchase Agreement (PJBG). This research is expected to find out that the RCP field is able to fulfill the PJBG according to the plan. The development of the RCP Gas Field starts from the IGIP calculation, then calculations are carried outrecovery factorto getestimate ultimate recovery(EUR), which will then be corrected for reserves of impurities. The next stage is the field development scheme. For field development during the PJBG contract period, it is planned to use 3 development wells with optimization of the production rate using chokes. Gross rate field of 67 MMSCFD (22.3 MMSCFD per well) to getgas salesof 50 MMSCFD. After planning the development of the field, the next step is to calculate the economy. The economic calculation is calculated using the PSC scheme based on Fiscal Termapplicable in the RCP field. The results of the analysis of the development scheme show that the RCP field is able to produce according to the PJBG plan with gas sales daily amount of 50 MMSCFD for 10 years. Economic calculations show positive results so that it is concluded that the RCP Field has economic value and is feasible to be developed. From the economic calculation, we get NPV@10 % = 96.2 MM US$; IRR = 27.1%; POTS = 2.5 years.

THE STRUCTURAL GEOLOGY STUDY AND SLOPE STABILITY ANALYSIS IN KARANGBAWANG VILLAGE, AJIBARANG, CENTRAL JAWA Setiawan, Jatmika; Setiawan, M. Nurjati; Rahman, M. Gazali; Prasetyo, Abdullah Panji; Hapsari, Nuli
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7342

Engineering geology or Geotechnical is the application of geological science in engineering practice for the purpose of ensuring that geological factors affecting the location, design, construction, operation and maintenance of engineering works have been properly identified and taken into account. Engineering geology research can be carried out during the planning, environmental impact analysis, civil engineering design, optimization engineering and construction stages of public and private projects, as well as in the post-construction and project investigation stages. Engineering geology research is carried out by a geologist or an educated engineering geologist, trained professionals and has the ability to recognize and analyze geological hazards and adverse geological conditions. The whole purpose is to protect life and property from damage as well as solutions to geological problems. Geological observations made in the form of geological structures in the form of joints and faults are very important parameters carried out in the planning stage of a development because it is very influential in the short, medium and long term stability of a civil building. Detailed measurements and mapping of the intensity level of geological structures will be able to assist engineering geologists in making recommendations for a civil construction project. Geological engineering study of the Ajibarang area and its surroundings, especially in the area of PT.development project crusher and conveyor. So that it will get good slope safety and can be used as the basis for the development of the crusher and conveyor at PT. Semen Bima.

STUDY OF GROWTH YIELD AND SEED QUALITY OF CUCUMBER (Cucumis sativus L.) ON BIOFERTILIZER AND LIQUID SMOKE FERTILIZER Pratama, Bayu Aji; Suryawati, Ami; Waluyo, Alif
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7346

The application of biofertilizer and liquid smoke fertilizer is either method to increase the production of cucumber according to the environmentally friendly because it’s made from organic materials. The purpose of this research is to get the biofertilizer dose and the best concentration of the liquid smoke fertilizer to increase the growth and yield of fruit as well as the quality of seed cucumber. This research method is a field experiment that arranged by Completely Randomized Group Design (RAKL). The first factor is biofertilizer dose (P) that consist of 3 levels, that is: 5 ml/plant, 10 ml/plant and 15 ml/plant. The second factor is the concentration of the liquid smoke fertilizer (O) that consist of 3 levels that is: 1%, 2% and 3%. The control crops were fertilized according to the farmer’s habit of using NPK without biofertilizer and liquid smoke fertilizer treatment. The obtained data were analyzed by diversity analysis level 5%. To find out the significant differences between the control and the treatment, we did Contras Orthogonal Test level 5% and Duncan Multiple Distance Test level 5%. The result showed that the combination of treatment was significantly better than the control. There is an interaction between the dose of biofertilizer and concentration of liquid smoke on the vigor index parameter. The combination of P2O2 (biofertilizer 10 mL/plant and liquid smoke 2%) treatment is the best treatment on vigor index parameter. The best P2 (dose of biofertilizer 10 mL/plant) treatment was on the parameter of fruit weight per plant. O2 (concentration of liquid smoke 2%) treatment was best on the parameters of fruit weight per swath.

PERFORMANCE OF GROWTH AND YIELD CAYENNE PEPPER (Capsicum frutescens L.) WITH DOSAGE OF NPK AND MONOSODIUM GLUTAMATE (MSG) FERTILIZER Maryana, Maryana; Sumarwoto, Sumarwoto; Sipangkar, Silvana Delima
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7348

The demand for cayenne pepper always increases every year along with the increase in population. To increase the yield of cayenne pepper, among others, through fertilization by giving doses of NPK and monosodium glutamate (MSG) fertilizers. The purpose of the study was to determine the best dose of NPK and MSG fertilizer on the growth and yield of cayenne pepper plants. The research was carried out at the Practical Garden of the Faculty of Agriculture, UPN "Veteran" Yogyakarta in August - December 2021. The study used a factorial completely randomized design with 4 replications. The first factor is the dose of NPK fertilizer with levels: NPK fertilizer dose of 1.5 g/plant, and 3.0 g/plant. The second factor with the level: monosodium glutamate dose includes no MSG 0 g/plant; 2.5 g/plant; 5.0 g/plant; and 7.5 g/plant. The results showed that there was no interaction between the dose of NPK fertilizer and monosodium glutamate (MSG) on the growth and yield of cayenne pepper. The dose of NPK fertilizer 3 g/plant and MSG 5 g/plant can provide the best growth and yield of cayenne pepper including number of leaves, number of fruit per plant, total number of fruit per plant and total fruit weight per plant.

EFFECT OF ACTIVATED ZEOLITE ON β-KAROTEN BLEACHED PALM OIL LEVELS Syazana, Tengku Auni; Zulkania, Ariany
Journal TECHNO Vol. 8 No. 1 (2022): Mei
Publisher : Universitas Pembangunan Nasional Veteran Yogayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/journal techno.v8i1.7426

Palm oil is one of the Indonesian prima donna whose total national production is increasing every year. Palm oil can be used as a raw material for production of cooking oil products, industrial oil needs and energy sources. The base color of Crude Palm Oil (CPO) is due to the presence of a high β-carotene content in palm oil which can produce a red color in CPO. For this reason, it is necessary to bleach CPO. Most of the palm oil industry currently uses adsorbents as a pale material in the Bleaching process. This research does several things related to the process of making palm oil in general, the process is the production of adsorbents with activated adsorbents, removal of gum with H2SO4, bleaching process with adsorbents and analysis of bleaching oil (BPO). The experimental results show that zeolite can be used as an adsorbent for the bleaching process of palm oil. Zeolite has been activated by chemical methods using H2SO4 solution before being used as an adsorbent. From the experimental results, the best results for the application of β-carotene were obtained from 3% activated zeolite with 15% by weight zeolite.

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