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All Journal Jurnal Teknosains agriTECH Agroindustrial Journal

Wagiman Wagiman

Department Of Agroindustrial Technology, Faculty Of Agricultural Technology Universitas Gadjah Mada, Jl. Flora No.1 Bulaksumur 55281, Indonesia

Author-ID : 2869686

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Articles

A Tofu Wastewater Treatment with A Combination of Anaerobic Baffled Reactor and Activated Sludge System Wagiman Wagiman; Ag. Suryandono
agriTECH Vol 26, No 1 (2006)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Tofu wastewater contained high organic matters and relatively fluctuated in Chemical Oxygen Demand (COD) of about 5.000 to 8.000 mg/L. A Combination of Anaerobic Baffled Reactor (ABR) and Activated Sludge System was very useful to reduce organic matter and produce higher quality effluent. The continuous operation mode was effective in treating the tofu wastewater at COD below 5.000 mg/L, while efficiency improvement was needed for COD 5.000 mg/L or more. The Batch operation mode might be applied but it should take 11 days hydraulic retention time to match the standard condition. The result also showed that at COD standard point of 100 mg/L, the nitrogen concentration decreased with 80-95 %. The nitrogen removal in the aerobic condition was observed most among other removals, because microorganisms took it as their matrix. In addition, there was an increase in pH from 5,0-6,0 to 7,0 â€“ 7,5 meaning thet there would be an improvement in effluent safety.

Synergy of Lean and Green for Improving Small-Scale Agroindustry Performance Muslikah Desti Kurniasari; Nafis Khuriyati; Wagiman Wagiman
Agroindustrial Journal Vol 6, No 2 (2019)
Publisher : APTA and DTIP FTP UGM

Small Medium Enterprises (SMEs) play an important role in the economy of Indonesia. It contributed to the 21.20% of national total economy. Global competition is a challenge and an opportunity for SMEs including agroindustry sector. Therefore, it is needed for strengthening their competitiveness. In the midst of this effort, the raising concern about environment issue has increased. This research aims to determine the alternatives or options in production aspect based on lean and green for small-scale crackers industry. Sustainable Value Stream Mapping (SVSM) was applied to describe the production condition and identify wastes from lean and green point of view. Furthermore, Value Stream Analysis Tools (VALSAT) and Life Cycle Impact Assessment (LCIA) were used to analyze waste throughout the production activity. The results show that the small-scale cracker industry has already implemented synergy of lean and green, however some alternatives for reducing lead time and waste are needed such as demand forecasting and improvement of working methods

Biogas Production from Tofu Waste to Improve the Environmental Performance of Tofu Industry Wagiman Wagiman; Icha Rizkia Ardaniswari; Welly Prakoso Nugravianto
Agroindustrial Journal Vol 7, No 1 (2020)
Publisher : APTA and DTIP FTP UGM

The tofu industry produces solid waste and wastewater that still contain high protein which suitab le as raw material for biogas. Conversion of waste into biogas will contribute to improving the en vironmental performance of small and medium scale industries to increase the added value for the industry. This research was aimed to develop biogas production process by utilizing wastewater a nd solid waste from tofu industry. There were three stages of process development: biogas product ion from wastewater (as control), biogas production from solid waste, and biogas production from a combination of solid waste and wastewater. The results of the production process were evaluate d based on the volume and its added value on both financial and environmental performance. The output from this research was the model of solid waste and wastewater processing for small and medium scale tofu industry. The result showed that the addition of solid waste of tofu and the sour ce of microorganisms from cow manure was able to produce much larger volume of biogas as muc h as 715 ml in shorter time of 7 days. Another result of this research was to make a better environ ment in tofu industry which is seen from the aspects of health and aesthetic.

Analytical Hierarchy Process of Instant Chocolate Drink Development based-on Consumer Preferences Moh Wahyudin; Wagiman Wagiman; Vivi F Khulsum
Agroindustrial Journal Vol 7, No 2 (2020)
Publisher : APTA and DTIP FTP UGM

Instant chocolate drink is chocolate powder in sachet packaging that has been accompanied by additional ingredients and is easy to consume. Sales competition between products has a determining factor in product selection by consumers and needs to be analyzed on factors that influence consumers to buy. This study aims to find out what are the priority attributes of decisionmaking in willingness to buy instant chocolate drinks. The method used in this research is the Analytical Hierarchy Process (AHP) approach, by arranging the problems hierarchically and then weighting and ranking priorities obtained from the results of distributing questionnaires aided by processing using the Super decision 2.0 application. Based on the results, there are seven (7) subattributes that could be influence consumers in buying an instant chocolate drink: originality taste, affordable prices, product quality, additional flavors, packaging visualization, producers of instant chocolate drink should be able to maintain the originality taste because it becomes the final factor in purchasing decisions. Beside the original taste, producers should be able to maintain affordable prices and not experience an increase in sales prices.

Analisis potensi penerapan teknologi produksi bersih pada c-maxi alloycast, Yogyakarta Dewi Masri; Wagiman Wagiman; Bertha Maya Sopha
Jurnal Teknosains Vol 12, No 1 (2022): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.67962

CV C-Maxi Alloycast is an industry engaged in the manufacture of household appliances (pans) made of aluminum which is located in Yogyakarta. The aim of the study was to identify the potential application of clean production principles in CV C-Maxi Alloycast. The methods used were production process mapping, waste analysis through liquid waste testing and potential analysis of clean production principles. The results obtained for the production process were smelting aluminum and scrap, pouring molten metal into molds, lifting molds and providing coolant, lifting castings, turning, filing, quality control, storage and distribution. Based on the laboratory test, the characteristics of the liquid waste produced by the CV C-Maxi Alloycast were pH 8.9; COD 52.1 mg/L; BOD 21.4 mg/L; TSS 6660 mg/L; Fe 4,2440 mg/L; Cu 0.0130 mg/L; and Zn 0.0893 mg/L. All parameters indicate that the value meets the quality standard, but the TSS content did not meet the NAB (Threshold Value) which refers to the Regulation of the Minister of the Environment of the Republic of Indonesia No. 5 of 2014 and the Regulation of the Special Region of Yogyakarta (DIY) No. 7 of 2016. Clean production opportunities were: good housekeeping, application of 3R (Reduce, Reuse, Recycle) on solid waste, construction of B3 Waste TPS and capacity building of human resources. Environmental performance had increased based on the Green Industry Standard (SIH) from level 1 to level 2 with a value of 53% to 65% with the implementation of clean production. The economic performance of implementing clean production gains a profit of Rp. 77,412,000,-/year, then the second alternative, namely recycling aluminum scrap is an economical alternative to clean technology with a 5-year NPV value of Rp. 37,853,056,558,- Implementing clean production can have a positive impact on the environment and the economy.

Co-Authors Ag. Suryandono Bertha Maya Sopha Dewi Masri Icha Rizkia Ardaniswari Moh Wahyudin Muslikah Desti Kurniasari Nafis Khuriyati Vivi F Khulsum Welly Prakoso Nugravianto

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