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Strategies for Paint Waste Minimization in the Packaging Industry Ari Dina Permana Citra; Purwanto Purwanto
Waste Technology Vol 8, No 1 (2020)
Publisher : Diponegoro University

Cosmetic packaging painting using an alkyd resin compound is to make a smooth, glossy surface and attract the attention of consumers. The generated waste is handed over to a third party and has not been utilized as a product, so it requires a high enough cost. This research aims to develop a waste management strategy from its source to its utilization into a product. The research method uses a block diagram of the production process to identify waste generation and opportunities for prevention and reduction. Waste arising from alternative uses is created into a product leading to zero waste. This approach provides economic and environmental benefits for the cosmetics packaging industry.

Municipal Waste Management Policy: Kebumen Regency Achmad Chalid Afif Alfajrin; Fajar Adie Nugraha; Budi Santoso
Waste Technology Vol 8, No 1 (2020)
Publisher : Diponegoro University

Waste management is carried out to utilize the value that is still contained in the waste itself, namely through the process of composting, recycle / recycling, combustion (incineration), and others. Managing waste comes in the five most challenging aspects of managing a city, but strangely this sector receives less attention than other urban issues. The quality of waste services is one indicator of good city governance. Therefore, waste management is still a big challenge for the cities in Indonesia. These challenges include public awareness that is still relatively low, especially those selling in the market, the lack of waste collection facilities, and the limited number of sanitation extension workers so that the intensity of counseling is still low. Every region in Indonesia has its own regional regulations regarding waste management. Policies related to waste management in Kebumen Regency are regulated in the Regional Regulation of Kebumen Regency No. 34 of 2011. The regulation contains a reduction in the volume of waste, statements related to fees, compensation, partnerships, dispute resolution, investigations, and criminal provisions. The Kebumen Regency Public Works Office can manage 840 m³s of garbage every day, but only 320 m³s of garbage can be transported by sanitation workers to Semali TPA and Kaligending TPA. Specifically in the case of specific waste treatment, PKU Muhammadiyah Sruweng Hospital has used 20 closed tube containers with yellow plastic coated 60 liter and replaced every day for medical waste produced. The success of waste management policies in an area is seen from the factors of human resources, communication, facilities and infrastructure, and law.

The Innovation of Tofu Waste Liquid Biogas Reactor Technology as an Alternative Energy Resource Nely Ana Mufarida; Asroful Abidin
Waste Technology Vol 9, No 1 (2021)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/9.1.20-24

Abstract - Increased production capacity of the tofu factory has an impact on increasing waste. Tofu liquid waste is one of the untapped wastes and even just thrown away. Besides, the tofu industry needs water for its processing, so more wastewater produces more than tofu solid waste. Wastewater from the making tofu process produces liquid waste which is a source of pollution for humans and the environment that will disrupt the ecosystem and environmental health.The right process for handling tofu wastewater is by an anaerobic process that converts the liquid waste fermented by bacteria into methane gas. This methane gas can be used as a new energy resource and this energy can be used for cooking or frying tofu.The results of the research are from 500 liters of tofu liquid waste treated, 149.6 liters of biogas were obtained in 21 days. It increased the quality of biogas as seen from the increase in CH4 levels by 70%, temperature in the digester by 32oC, volume in 149.6 liters, and decreasing H2S levels by 9 ppm, CO by 13 ppm, O2 by 15.1%. Based on the test results, the maximum fermentation time is 21 days.

CARBON QUANTUM DOTS (CQDS) from RAMBUTAN and PANDAN LEAVES for CU2+ DETECTION Laksmi Dewi Kasmiarno; Andini Fikarda; Reforny Kristianti Gunawan; Isnaeni Isnaeni; Supandi Supandi; Nonni Soraya Sambudi
Waste Technology Vol 9, No 1 (2021)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/9.1.1-10

A facile and eco-friendly process for the synthesis of carbon quantum dots (CQDs) was carried out via hydrothermal and microwave treatment using Rambutan and Pandan leaves as carbon sources. The effects of synthesis methods on the optical and physical properties of CQDs, and the sensing activity of CQDs through Cu2+ detection are presented in this study. From the analysis, the band-gap energies of CQDs are found to be ranging from 2.52 to 3.51 eV. The CQDs solutions exhibit significant fluorescence property, in which bright cyan fluorescence can be detected under Ultraviolet (UV) light irradiation at wavelength of around 405 nm. The CQDs synthesized from Pandan and Rambutan leaves using hydrothermal method show quantum yield (QY) values at around 2.46% and 2.70%, respectively. The FT-IR analysis recorded existing functional groups on the surface of CQDs to be of hydroxyl and carbonyl groups, which can serve as adsorption sites for the detection of Cu2+. Furthermore, this study indicates that CQDs emission from Pandan and Rambutan leaves using hydrothermal method shows the best turn-off behavior when detecting the presence of Cu2+ with minimum limit of detection (LoD) as low as 123 µM.

DUST AND GENDER RELATED WITH LUNG VITAL CAPACITY DISSORDERS IN THE TEXTILE INDUSTRY SPINNING SECTION Iwan Suryadi; Maria Paskanita Widjarnarti; Aditama Putra Nugraha; Hashfi Hawali Abdul Matin
Waste Technology Vol 8, No 2 (2020)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/8.2.30-33

Objective: Many factors affect lung function capacity in textile industry workers. This research aims to determine the factors that affect the vital role of pulmonary spinning workers in the textile industry. Methods: This research used an analytic observational research design with a cross-sectional approach. Sampling technique used total sampling and get the sample was 96 people, and measurement of lung vital capacity used spirometry. The Low Volume Sampler was applied to measure dust concentration, and the questionnaire was used to assess the individual characteristics. Results: Bivariate analysis of the variables is the working environment dust, and gender are significant. The result of multivariate analysis of dust is the most significant to the lung vital capacity. Conclusion: dust concentrations is classified above the Threshold Limit Value (TLV), so the company should to control the source of dust exposure.Keywords: lung vital capacity

Effects of Comparison of Feed Composition, pH, and Preliminary Treatment of Biogas Production from Cow Blood Waste and Molasses Budiyono Budiyono; Ichwanul Muttaqin; Renyka Dwi Febriatiningrum; Hashfi Hawali Abdul Matin
Waste Technology Vol 9, No 1 (2021)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/9.1.11-19

Energy problems in Indonesia are issues that are not easy to solve. If the energy needs dominated by BBM continue to increase without any changes in the pattern of energy use, then Indonesia's sustainability and energy security will be disrupted. Therefore, Indonesia really needs alternative energy. Biogas is an alternative energy produced from the anaerobic degradation of organic compounds and can be a substitute for natural gas and fossil fuels. Cow's blood which is a waste from slaughterhouses can be used as a substrate for anaerobic biogas production by rumen and molasses. The objectives of this study are (i) To examine the comparison of the concentration of blood and molasses added to the volume of biogas produced, (ii) To examine the effect of pasteurization on blood on the volume of biogas produced, (iii) To examine the effect of initial system pH regulation on the volume of biogas produced, (iv) Assessing the pH setting and without adjusting the pH after measuring the volume of biogas produced. This research was conducted by making variations in the composition of feeds, pH stabilization, and blood pasteurization. The process of biogas formation is carried out for 40 days at room temperature with the response of quantitative results in the form of biogas volume every 2 days. Biogas production in cow's blood gets the best results at C/N 30, using pH 8. Pretreatment of blood pasteurization and pH stabilization also shows the best biogas results.

The Impact of Pesticides Use on Farmer Health and Environment Hargianti Dini Iswandari; Ari Dina Permana Citra; Okti TD Retnaningrum; Sigit Sugiharto; Chusnul Zulaika
Waste Technology Vol 8, No 2 (2020)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/8.2.25-29

Pesticides are supporting component in agricultural sector. However, the excessive use of pesticides can have negative impacts on the health of farmers and the environment. This research was conducted in Kebonagung village, Sumowono sub-district to determine the impact of pesticides on health and the environment. The study population was vegetable farmers in Kebonagung Village, Sumowono District. The sample selection technique used purposive sampling method. In-depth interviews were conducted with 10 vegetable farmers and data triangulation was obtained through interviews with the Village Head of Kebon Agung. The results showed that farmers' knowledge was still lacking, farmers did not have awareness of the importance of using personal protective equipment when applying pesticides, pesticide control was carried out once every 6 months but not all farmers received this supervision. The impact of pesticides on health and the environment in Kebonagung village is still relatively light but there are indicators of an imbalance in the ecosystem due to excessive use of pesticides

FEASIBILITY OF BIOETHANOL PRODUCTION FROM ROTTEN TOMATOES (Solanum Lycopersicum) USING SACCHAROMYCES CEREVISIAE Janet Appiah Osei
Waste Technology Vol 8, No 2 (2020)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/8.2.%p

The study aimed at optimizing different fermentation conditions for bioethanol production using rotten tomatoes (Solanum lycopersicum). Rotten tomatoes were collected from sellers at Nairobi market, Kenya for six months and analysed after each time of collection in Kenyatta University Laboratory. They were physically pre-treated and enzymatic hydrolysis was performed using commercial cellulase from Aspergillus niger. Fermentation was carried out using pure culture of Saccharomyces cerevisiae (baker’s yeast). Fermentation variables were optimised at different incubation times of (24, 48, 72, 96, 120 and 144 hours) and temperatures (20oC, 25oC and 30oC). Concentration (%/v/v) of bioethanol at the end of each fermentation time was determined by the use of colorimetric method and residual sugar was determined using DNS method by Miller. Maximum bioethanol percentages of (0.17%) and (0.16%) were achieved at 24 hours and 30oC respectively. Thus, the optimum conditions for maximum bioethanol production in the study were fermentation time of 24 hours and temperature 30oC. The study results have proved the effectiveness of producing bioethanol from rotten tomatoes using baker’s yeast for fermentation.

Towards Urban Zero-waste Community through Bulk Stores: Challenges and Opportunities Mada Sophianingrum
Waste Technology Vol 8, No 2 (2020)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/8.2.39-44

Zero-waste is a recent phenomenon which is one of the most cost-effective local solution to handle some of the environmental, social and economic challenge in urban area. Urbanization and rising populations will affect the increase in consumption, which in turn will also increase waste production in urban areas. In 2020, it was noted that 24 percent of waste in Indonesia had not been processed properly. Thus, the waste management approach needs to prioritize not only through a qualified technology system but also needs to be supported by the transformation of people's behavior, one of which is through zero-waste. Bulk store is an urban initiative that applies the concept of zero-waste. This shop combines social and entrepreneurial concepts as well as the environment in carrying out its business processes. Through the concept of zero-waste, people must bring their own containers to shop here. This study aims to examine the opportunities and challenges of bulk store as an initiative to achieve zero-waste communities in urban areas. The method used in this research is qualitative approach through interviews and observations with shop owners, consumers and networks. The results obtained from this study are that education is the main factor determining the success of the bulk store. Apart from that, bulk stores also have another role, namely as a market-hub for local producers around urban areas. This makes bulk stores have a strategic role in supporting the zero-waste community

Community Awareness and Willingness to Participate in Electronic Waste Management: A Case Study of the District Banjarsari, Surakarta Hashfi Hawali Abdul Matin; Timothy Jeffrey Walter Hutauruk; Ivo Solikhah; Novania Cantika Widagdo; Rony Bayu Paddy EL Maestro Setianto; Salma Ardelia Darmastuti; Thalita Aldila Pramitasari
Waste Technology Vol 9, No 2 (2021)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/9.2.14-22

Hazardous and toxic waste is the residue of a business or activity containing hazardous and toxic materials which due to their nature and concentration or amount, either directly or indirectly pollute or damage and endanger the health of the environment. This study examines the awareness and willingness of the community in the management of electronic waste in Banjarsari District, Surakarta. The objectives of this study are: (i) Knowing the level of awareness of the people of Banjarsari District regarding electronic waste management; (ii) Knowing the level of willingness of the people of Banjarsari District to participate in electronic waste management; and (iii) Provide recommendations for electronic waste management in Banjarsari District. The research method uses a qualitative descriptive approach that prioritizes descriptive data, observations, and interpretations. The technique of collecting data is through primary data obtained from surveys or questionnaires to the people of Banjarsari District and secondary data derived from related literature. The results showed that the level of awareness and understanding of the electronic waste management of the people of Banjarsari District was quite good. The people of Banjarsari District have a high level of willingness to participate in waste management but are reluctant to incur additional costs due to economic and social problems. Recommendations are applied in the management in Banjarsari District by collecting, picking up electronic waste, and collaborating with third parties such as PT. Arah Environmental Indonesia.

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Journal Mail Official
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Kota semarang,

Jawa tengah

INDONESIA