ABSTRAK
Penurunan penetrasi cahaya matahari dan suhu, serta peningkatan akumulasi logam berat terjadi signifikan akibat hadirnya padatan tersuspensi. Metode sintetis padatan tersuspensi dilakukan guna efisiensi pengolahan air, dikarenakan kuantitas dan kualitas air limbah yang semakin buruk. Permasalahan akan timbul ketika dibutuhkannya sintetis pada kondisi khusus, karena tingkat representatif sintetis sangat dipertimbangkan. Dari penelitian ini, dihasilkan rekomendasi sintetis padatan tersuspensi, berdasarkan uji selektivitas (ukuran, bentuk dan sifat) terhadap pengaruh variasi pH dan konsentrasi. Dengan metode crossflow pada membran mikrofiltrasi, penelitian ini dapat mengetahui seberapa besar flux, rejeksi, feed removal, serta mengilustrasikan fouling yang terjadi, dengan uji ukuran partikel (Particle Size Analyser), luas permukaan (Surface Area Analyser) dan morfologi bahan (Scanning Electron Microscopy) sebagai data pendukung.
Kata kunci: sintetis padatan tersuspensi, crossflow, fouling
ABSTRACT
Decrease of sunlight penetration and temperature also an increase of heavy metals accumulation occurs significantly due to the presence of suspended solids. The suspended solids synthesis method is carried out for water treatment efficiency, because the quantity and quality of wastewater are getting worse. Problems will arise when the need for synthetics is in special condition, due to the synthetic representative level is highly considered. From this research, recommendation for the synthesis of suspended solids were produced, based on selectivity test (size, shape, and properties) of the effect of pH and concentration variation. With cross flow method on microfiltration membrane, this research can determine how much flux, rejection, feed removal, and illustrate fouling that occurs. By testing particle size, surface area and membrane morphology as supporting data.
Keywords : suspended solids synthetic, crossflow, fouling
Abstract Economy and corporate activities are significant elements relating to sustainable drawbacks. The 2030 agenda is a supremely transformational vision ensuring no one is left behind and guarantees full benefits for today and future generations. However, there is a limited understanding of their relationship and how their critical root causes them. Therefore, this study explores the complicated history of Indonesia’s sustainability within a systematic qualitative review from primeval documents to recent trends data. As a result, the pattern of nature degradation concerning nation growth has been interpreted. A corporate sustainability perspective has been designed as a problem solver. The knowledge management of sustainability and carbon management hierarchy tools have also been introduced. Hopefully, this study expresses extensive reasoning for Indonesia’s road map to a sustainable society.
Waste is increasingly recognized not just as an environmental challenge but also as an economic opportunity, particularly in developing countries like Indonesia where it can help alleviate employment shortages. This study explores the dual role of waste as both a tradable commodity driven by industrial demands for raw materials, including primary substances, additives, and Refuse Derived Fuel (RDF), and as a means of reducing environmental impact. This phenomenon is important and interesting because it can have a positive impact both in terms of reducing waste, saving natural resources, and as an economic opportunity for society. This study aims to examine the potential of waste that can be utilized as a resource on the one hand and reduce the potential for pollution on the other. The study used the Material Flow Analysis (MFA) method with the Circular Economy principle and used an action research approach to redesign the waste processing system. The results of this study indicate that the current system only manages 34% of the total waste generation and only 4% can be reused with sales of IDR 97.9 million per year. With the development of a new system, the waste managed is 60% with the economic potential generated of 1.08 billion per year.
Abstract Nowadays, countering the complexity of waste collection path optimization problems (POP) are reliably solved through evolutionary computation (EC). However, a sustainable collection strategy requires a specific rule and outcome for a given route network. Most waste managers are concerned with expenditure, work hours, and ecological footprints, combined with model flexibility to mimic real-life execution for the specific study case. Contemporary stochastic and deterministic POP methods are every so often confronted with optimality and scalability. Beyond its predecessor, namely the A* and the Dijkstra algorithm, a fundamental nature-based deterministic algorithm called a Ripple-Spreading Algorithm (RSA) had performed a straightforward heuristic evaluation. This study investigates prospects and future challenges in developing the RSA simulation based on Indonesia’s waste management scope. Specific overseas theme literature was employed to explore the possible research setting.
'/%3e%3cuse xlink:href='%23a' transform='rotate(23.036 .093 25.536)'/%3e%3cuse xlink:href='%23a' transform='rotate(45.87 1.273 16.18)'/%3e%3cuse xlink:href='%23a' transform='rotate(69.945 .996 12.078)'/%3e%3cuse xlink:href='%23a' transform='rotate(20.66 -19.689 31.932)'/%3e%3c/svg%3e)
