OUR MANAGEMENT
Takanobu Tachikawa
53-year-old Japanese national, brings more than 30 years of experience in environmental management, business development, and corporate leadership within the DOWA Group. He first joined PT Prasadha Pamunah Limbah Industri (PPLI) in 2009, where he held several key leadership positions that contributed significantly to the company's growth and operational excellence. From 2009 to 2012, he was responsible for the company's finance function before being appointed as Business Development & Logistics Director in 2012. In this role, he oversaw a broad range of strategic and operational functions, including operations, transportation, procurement, business development, and public relations. After returning to DOWA Group in 2015, he continued to assume leadership roles across the group's environmental businesses. From 2023 to 2026, he served as President Director of PT DOWA Eco-System Indonesia (DESI), sister company of PPLI within the DOWA Group, where he led business expansion initiatives and strengthened the group's environmental solutions network in Indonesia. In 2026, he returned to PPLI as President Director, bringing extensive industry expertise, deep knowledge of the Indonesian environmental services sector, and a strong track record in strategic leadership. His appointment reflects PPLI's commitment to sustainable growth, operational excellence, and delivering innovative environmental solutions to its customers and stakeholders.
Bayu Setyawan
An Indonesian citizen, 53 years old, with more than 25 years of experience in the upstream oil and gas industry. Previously, he had served in various international projects and business development for a multinational service company. As a graduate of Electrical Engineering from the Sepuluh Nopember Institute of Technology Surabaya (ITS), he joined PPLI in 2009 as the Head of the Drilling Waste Management Department and pioneered the Drilling Waste Management business unit at PPLI. He is a dedicated individual, both technically and managerially, with extensive experience in waste management and the oil and gas industry, on both regional and global scales. Currently, his focus is on solution-based approaches for oil, gas, and geothermal drilling projects that optimize the design, delivery, and management of drilling waste in integrated services tailored to specific customer needs.
Elpido
Indonesian Citizen, 52 years old. Background in Chemical Engineering from Institut Teknologi Bandung (ITB) and Environmental Science from IHE Delft, Netherlands with more than 16 years of experience in managing hazardous and toxic waste (B3). Joined PPLI in 2006 as a Technical Engineer and holds an International Waste Manager certificate from ISWA. He has demonstrated knowledge, understanding, competence, and involvement in sustainable waste management, particularly in industrial and B3 waste management, wastewater treatment, and environmental management systems. He focuses on helping industries in providing environmentally sound and regulation-compliant waste management solutions.
Machmud Badres
Indonesian Citizen, 63 years old. Trusted as Executive Advisor, with a focus on the environmental business for the past three decades has brought a lot of experience in various environmental issues and their solutions. Since graduating from the Bandung Institute of Technology (ITB), he began his career in an environmental consultancy firm in 1988 and a Trainee abroad with MONENCO (Montreal Engineering Company) in Canada has expanded his knowledge and experience in the field of waste management and the environment. In 1993 he joined PT. PPLI and became one of the pioneers of the company through his technical and managerial skills to provide services for industries throughout Indonesia, all business sectors, including oil and gas, manufacturing, consumer products, and other sectors. In 1996, he continued to develop his managerial skills and received a Master of Business Administration degree in 1998 from IPMI and the Joint Program Monash University, Clayton, Australia. At PPLI, before entering retirement with his last position as Director of Sales and Marketing at the end of 2022, he was a key player in the sales and marketing department for almost 30 years to achieve company targets and business growth, including developing new services and penetrating new areas within the country.
Yurnalisdel
48 Years. A seasoned professional with over 20 years of experience in marketing and sales across multiple industries, including financial services, automotive, building materials, and most notably, the waste management sector. He is known as an enthusiastic and highly motivated leader, with sharp strategic and tactical thinking. With his strong team-building and performance-driven approach, he consistently inspires and drives high-level results. He has been actively involved in the waste management industry for over 15 years and joined PPLI in 2008. His career at PPLI began as Regional Sales Manager (2008–2015), followed by National Sales Manager (2015–2020), and later as General Manager from July 2020. On April 1, 2025, he is officially appointed as Director of Industrial Sales. Throughout his leadership journey at PPLI, he has played a key role in shaping business strategies, expanding both hazardous and non-hazardous waste management services, and strengthening partnerships with various industries and government institutions. He has also been instrumental in leading service expansion into new regions across Indonesia and spearheading strategic project development initiatives for the company. He holds a strong and multidisciplinary educational background: a Master’s degree in Business Management from Universitas Esa Unggul, a Master’s degree in Business Law from Universitas Trisakti, and academic training in engineering and urban/regional planning. These qualifications further enhance his understanding of both technical and regulatory aspects of the waste management industry. With a unique blend of hands-on experience and academic foundation, he is well-equipped to manage operations, ensure regulatory compliance, and drive sustainable business growth in the industrial waste management sector.
Keita Sakurai
51 years old. Japanese professional with over 25 years of experience in strategic corporate functions within the DOWA Group. His expertise spans across marketing, corporate administration, finance, and human resources management. As of April 2025, he officially serves as the Finance Director of PPLI, bringing with him a comprehensive understanding of operational and governance excellence in multinational business environments. Prior to joining PPLI, he held various managerial roles in Japan, Singapore, and Thailand. These included positions such as Administration Manager at Nichiben Magnetics (Singapore) and Waste Management Siam Ltd. (Thailand), as well as Senior Manager of the Human Resources Department at DOWA Holdings Co., Ltd. in Tokyo. These assignments have equipped him with solid experience in optimizing organizational structures, ensuring compliance, and driving administrative efficiency across diverse business settings. His background provides a strong foundation for his current role, where he is committed to supporting PPLI’s financial growth, strengthening internal controls and reporting systems, and advancing corporate governance in line with international standards. Keita Sakurai holds a Bachelor's degree from the Tokyo University of Foreign Studies (1998) and is recognized for his structured leadership, cross-cultural agility, and results-oriented mindset.
Tetsuya Yumoto
Japanese Citizen, age 46. More than 20 years of experience in Japan in the environmental field, ranging from waste management with incinerators, pollution control to metal recycling, has made him a young Director seeking to improve the quality of operational services for integrated waste management in PPLI central facilities, Bogor. He is a passionate and high-skilled management member with an excellent knowledge of planning and engineering in international and industrial waste business development in various countries.
Syarif Hidayat
Executive Advisor
Indonesian Citizen, 65 years old. He is one of the pioneers of the company, with a background in Chemical Engineering from the Bandung Institute of Technology (ITB). Before spending most of his career at PPLI, he worked for an upstream oil and gas company for 10 years starting in 1983. In 1993, he joined PT Waste Management Indonesia to establish PPLI, the first integrated and modern hazardous and toxic waste management facility in Indonesia. After retiring from his last position as Technical and Operational Director at PPLI in 2021, he continues to serve the company with a focus on recycling project development and facility expansion in other areas, including West Java and East Java. With almost 30 years of experience in hazardous waste management, his areas of expertise include Environmental Chemistry and Laboratory Analysis, Processing and Disposal of Hazardous Waste (Stabilization/Compaction/Fixation, Physical and Chemical Processing, Micro and Macro Encapsulation, Thermal Destruction, and Landfill), Site Contamination Assessment and Remediation, General Management of Transport, Storage, Processing, and Disposal of Hazardous and Toxic Waste (B3), and Compliance Analysis and Permitting for B3 Waste Business.
Ilham Malik
He is an Indonesian citizen, 61 years old. He graduated from the Bandung Institute of Technology (ITB) in 1989 and began his career as an engineer at a planning consultant in the Public Works Department until 1991. Following his desire to serve the country, in 1992 he joined the Environmental Impact Control Agency (BAPEDAL) as staff in Air Pollution Control and was later assigned as Head of the Regional Study Division at the Deputy of Pollution Control, Ministry of Environment. In 2005, he was promoted to Assistant Deputy of Licensing for Hazardous and Toxic Waste Management (B3) and held this position until 2008 before serving as Assistant Deputy of Institutional Affairs at the Environmental Management Deputy. From 2010 to 2014, he was assigned as Head of the Sumatra Eco-Region Management Center based in Pekanbaru, Riau, overseeing 10 provinces in the Sumatra region. Continuing his career in government agencies, which since 2014 has been called the Ministry of Environment and Forestry (KLHK) and is also the supervisory agency of PT PPLI, from 2014 to 2015, he served as Deputy of B3 Management, B3 Waste, and Garbage, and in 2015, he was a Ministerial Expert in Environmental Policy Licensing until 2018. Since 2015 until now, he has been appointed as a Commissioner of PT PPLI, representing the shareholder of the Government of the Republic of Indonesia.
Khairul Alpi
Indonesian citizen, 52 years old. An experienced professional with expertise in hazardous waste management facility processes and operations. With over 20 years of experience in the industry, he has held various key positions and was recently promoted to General Manager of Operations within the organization. In this role, he leads the operations and management of an integrated hazardous waste facility, focusing primarily on leachate wastewater treatment and industrial wastewater treatment. His academic background includes a Bachelor's degree in Chemical Engineering from Jayabaya University and a Diploma in Chemical Engineering from PTKI (Industrial Chemical Technology Education) in Medan, North Sumatra. He has honed his technical and managerial skills through various certifications, including Water Pollution Control Manager (PPPA), Chemical Occupational Health and Safety (K3 Kimia), as well as leadership training programs in Indonesia and at DOWA’s headquarters. His career demonstrates a consistent track record of operational excellence, regulatory compliance, and continuous process improvement and capacity enhancement.