How experts in Saudi Arabia are harnessing the power of microbes to treat wastewater

In a microbial electrochemical system, microorganisms convert chemical energy from organic matter into electrical energy or valuable chemicals through controlled electron transfer between microbes and electrodes. (iStock images)
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Updated 18 April 2025
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How experts in Saudi Arabia are harnessing the power of microbes to treat wastewater

  • KAUST researchers are using the microorganisms found naturally in wastewater to clean it and extract valuable resources
  • The system reduces energy use and avoids sludge buildup common in traditional wastewater treatment methods

RIYADH: What if the answer to wastewater treatment was in the water itself? At King Abdullah University of Science and Technology, a team led by Professor Pascal Saikaly is harnessing the natural power of microbes found in wastewater — not just to clean it, but to generate energy and create valuable resources.

Rather than relying on outdated, energy-intensive systems, Saikaly’s team is developing innovative, nature-based solutions that turn waste into a tool for sustainability. Their key technology? A microbial electrochemical system that takes advantage of how certain microbes “breathe.”

Some microbes are capable of a process called extracellular electron transfer — moving electrons outside their cells to solid surfaces. Under the right conditions, this creates a small but useful electric current.

“At the anode, think about oxidation, you basically release electrons. At the cathode, it’s more like uptaking the electrons,” Saikaly told Arab News. “You have organisms that release the electrons at the anode side. At the cathode side, you have organisms that can capture these electrons.”

This process — using natural microbial activity and controlled conditions such as pH, electrode potential and substrate type — helps to treat wastewater while recovering energy and chemicals such as methane.

“You’re not adding any more energy to the whole process, so we reduce energy consumption,” Saikaly said.




Professor Pascal Saikaly at the KAUST Water Desalination and Reuse Center. (KAUST photo)

Unlike conventional wastewater treatment methods, which were developed more than a century ago and rely heavily on aeration, these new systems are far more efficient. According to Saikaly, current methods require 0.6 kilowatt-hours of energy per cubic meter of treated water and produce large amounts of residual sludge.

“The technology that we are currently using generates a lot of residual solids,” he said. “In any biological treatment process, you produce waste. And this waste, we call it residual waste or waste activated sludge, we need to dispose of it.

“This means there is an additional cost that we have to pay for in the treatment process. So, it is energy intensive and generates a lot of residual solids.”

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The KAUST team’s microbial system not only removes pollutants but, under the right operation, can also fix carbon dioxide — transforming it into methane gas or acetate, both of which can be used as renewable fuels.

“You can operate it without microorganisms and there you produce hydrogen, or you operate it with microorganisms and you can generate methane gas or other types of substrates,” Saikaly said.

 

The goal is to move from simply treating waste to recovering valuable resources from it. “All the biotechnology that we developed falls under this principle,” Saikaly said. “Treat the waste with simultaneous recovery of resources. That’s our principle.”

Another innovation Saikaly’s team has developed is a technology called microbial chain elongation. Designed as an alternative to landfilling organic waste, this process converts food and dairy waste into high-value chemicals rather than low-value methane.

“According to Vision 2030, all of these landfills will be shut down and waste should be diverted away from landfills by 2030 or 2035,” Saikaly said. “This means there is an urgent need for an alternative solution for this huge amount of organic waste that is being generated.”




Existing wastewater treatment plants use a technology that was invented more than 100 years ago. The Activated Sludge Process utilizes aerobic bacteria to break down organic matter in wastewater. (iStock images)

Among the byproducts of this process is casaene — a protein-rich substance containing 16 essential amino acids — suitable for use in aquaculture and poultry feed.

“We’re in discussions with the aquaculture program at KAUST,” Saikaly said. “And also we are in discussion with Sipchem, which is a petroleum chemistry company. They also want to use our products to produce polymers. There’s a big window of applications that is much, much broader and has a higher value than methane gas.”




By producing methane, wastewater can be treated by generating enough energy to make the whole process energy neutral. (iStock images)

The team is also behind a compact, mobile wastewater treatment plant — the aerobic granular sludge gravity-driven membrane system — developed in partnership with former KAUST scientist Mohammed Ali. It treats domestic wastewater without the need for energy-intensive aeration or pumping, making it ideal for rural or remote locations.

The system, already in use in Rabigh, Saudi Arabia, serves up to 2,000 people and is designed to process 150 cubic meters of wastewater per day.




At the anode, pollutants such as chemical oxygen demand, biological oxygen demand, nitrogen compounds, and phosphorus are removed.  (iStock images)

These innovations are part of a broader push by Saikaly and his team to rethink how we deal with waste — not as something to dispose of, but as something to transform. And while many of these technologies are still a few steps from commercial deployment, they are already showing how science and sustainability can go hand in hand.

“We want to think about waste not only as to treat and dispose, but as a waste that we can use to recover resources,” Saikaly said.


 


How Saudi Arabia is embracing AI to drive healthier lifestyles in line with Vision 2030

Updated 22 May 2025
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How Saudi Arabia is embracing AI to drive healthier lifestyles in line with Vision 2030

  • From smart hospitals to intelligent PE planning, the Kingdom is harnessing tech to improve public health outcomes
  • King Faisal Specialist Hospital uses AI to streamline patient care and educate families on managing long-term health conditions

RIYADH: Saudi Arabia is leveraging artificial intelligence to build a healthier, more active population — a central objective of Vision 2030, which commits to raising the quality of life for all citizens through physical wellbeing.

AI is playing a pivotal role in this national transformation, with its applications extending across the healthcare sector, educational institutions and even mobile fitness apps that support healthier daily habits.

AI applications now plays a significant role in healthcare, education and even mobile fitness apps that support healthier daily habits. (Getty Images)

One leader in this field is the King Faisal Specialist Hospital and Research Center, which uses AI to streamline patient care, support post-treatment recovery and empower families through personalized health education.

“Today, we live in a golden digital innovation ecosystem in the Kingdom,” Dr. Ahmad AbuSalah, director of the Center for Healthcare Intelligence at King Faisal Specialist Hospital and Research Center, told Arab News.

“It is a golden time for entrepreneurs, for innovators, for organizations and for researchers. In the hospital, we have a digital transformation journey that we take really seriously.”

Early this year, King Faisal Specialist Hospital and Research Centre in Riyadh announced that it has successfully performed a robotic-assisted implantation of an artificial heart pump (HeartMate 3) developed by Abbott. (Photo courtesy of KFSHRC)

Driven by the healthcare transformation program of Vision 2030, the hospital’s strategy focuses on lowering costs, expanding access to care and delivering outstanding services — all supported by AI.

However, Dr. AbuSalah said that adoption of these new technologies must be strategic and sustainable if they are to have the desired effect on patient outcomes and medical practice.

“Some organizations build AI models, keep it for a couple of years, and then shut it down. Why? Because it wasn’t bringing value,” he said.

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One of the most impactful uses of AI at King Faisal Specialist Hospital is operation intelligence, which helps to guide the patient journey from admission to discharge. The system uses predictive analytics to inform patients about their health and encourage targeted lifestyle changes.

“We built a system that will proactively predict a patient’s experience three days before their appointment for the cancer treatment unit,” Dr. AbuSalah said.

This helps doctors anticipate outcomes, manage expectations and intervene early where needed.

Dr. Ahmad AbuSalah, director of the Center for Healthcare Intelligence at King Faisal Specialist Hospital and Research Center in Riyadh. (Supplied)

The hospital’s AI tools also alleviate administrative burden on medical staff — a major cause of burnout. “If we remove the noise around the doctor, the care quality will be enhanced by itself,” Dr. AbuSalah said.

“You always hear the term ‘physician burnout’ because they are spending a lot of time on non-clinical tasks, on documentation, submitting orders here and there, generating reports. How can they focus on patients?”

By automating those tasks, AI frees up time for direct patient care, improving both staff wellbeing and service quality.

Outside the hospital setting, the same technology is helping Saudis to make better everyday health choices. AI-enabled apps now track sleep, diet and exercise, offering personalized insights to encourage small, achievable steps — such as walking or cycling.

In fact, walking and cycling are now the most popular forms of physical activity among Saudi adults, according to a 2024 General Authority for Statistics report.

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• Predictive AI can forecast patient experiences before appointments, enabling more personalized treatment.

• AI-powered apps help users to track their sleep, diet and activity for smarter, healthier daily habits.

• Schools are using AI to plan tailored PE lessons, making physical activity more engaging for students.

However, the report also noted a gender gap, with 23.2 percent of men being physically active compared to just 14 percent of women.

AI could help to close that gap, offering flexible, accessible ways for women to engage in exercise from home or within their communities.

Meanwhile, in schools across the Kingdom, AI is transforming physical education by helping teachers to tailor activities to individual students’ needs. This has made PE more engaging and inclusive — and part of a broader campaign to instill lifelong habits of fitness.

Last year, the Saudi Ministry of Education added rugby as an elective sport in its physical education curriculum, as part of an effort to promote the importance of having a healthy lifestyle among children. (AFP photo)

In a landmark move last year, the Ministry of Education introduced rugby as an elective sport — an initiative that underscores the growing importance of physical activity in the national curriculum.

But technology alone is not enough. To ensure lasting impact, experts say that the Kingdom must continue investing in infrastructure, educator training and custom tools that align with Saudi culture and goals.

Through such initiatives, Saudi Arabia is turning AI into more than just a technological leap — it is becoming a public health revolution, helping the nation move, live and feel better every day.
 

 


KSrelief chief meets UNICEF official in Brussels

Updated 22 May 2025
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KSrelief chief meets UNICEF official in Brussels

BRUSSELS: Dr. Abdullah Al-Rabeeah, adviser at the Royal Court and supervisor general of the Saudi aid agency KSrelief, recently conducted high-level discussions with UNICEF Executive Director Catherine Russell during the European Humanitarian Forum in Brussels.

The meeting, which included Saudi EU Ambassador Haifa Al-Jedea, focused on joint humanitarian and relief initiatives designed to enhance child welfare programs across global crisis zones.

Russell praised the ongoing partnership between UNICEF and KSrelief, highlighting how their collaboration has successfully delivered aid to millions of vulnerable children worldwide. She described the relationship as “an outstanding example of international humanitarian cooperation dedicated to serving children globally.”


Madinah university launches ‘Legacy and Impact’ project

Updated 22 May 2025
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Madinah university launches ‘Legacy and Impact’ project

 MADINAH: The Islamic University of Madinah has launched the “Irth Wa Athar” (Legacy and Impact) project, which aims to document its graduates’ educational impact and rectify data digitization.

The university said the initiative included documenting and rectifying graduates’ certificates from 1961-97 and collecting the data of 173,000 international scholarships offered by the university to its graduates from 179 countries since its establishment in 1961.

The international scholarships include more than 41,000 awarded to students in the fields of religious sciences, in addition to over 15,000 granted for studies in the principles and skills of Islamic preaching.

Some 27,000 scholarships were granted to students of Arabic language education, while 24,000 were offered for training specialists in other scientific fields.


Sakan wins Qassim excellence award

Updated 22 May 2025
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Sakan wins Qassim excellence award

RIYADH: The National Developmental Housing Corporation, or Sakan, has won the Qassim Award for Excellence and Creativity in the National Excellence Branch in its fifth session.

Yazeed Al-Rasheed, vice president for shared services at Sakan, received the award on behalf of the organization. He expressed his gratitude to officials for their support and recognition of national initiatives, saying that this was an incentive to continue efforts in cooperation with all parties.

Abdulaziz Al-Karidis, secretary-general of Sakan, thanked the Qassim governor for his support for Sakan’s initiatives and for following up and encouraging activities that achieved the foundation’s goals. Receiving the award would inspire the foundation to further enhance its performance and reinforce its core values, he said.

The win marks a milestone in the foundation’s journey and its commitment to excellence and innovation. The foundation continues to strive toward creating a positive and sustainable impact in the developmental housing sector by offering the best solutions and practices.


Black mulberry and damask rose seedlings distributed to farmers in Baha

Updated 22 May 2025
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Black mulberry and damask rose seedlings distributed to farmers in Baha

RIYADH: Saudi Arabia’s National Research and Development Center for Sustainable Agriculture — known as Estidamah — has distributed over 20,000 black mulberry and damask rose seedlings to farmers in Al-Baha.

The initiative, carried out through the center’s tissue culture laboratory, is part of efforts to support farmers and transfer modern agricultural techniques to areas with comparative advantages. It continues Estidamah’s contribution to a former agricultural project which saw 52,000 black mulberry, damask rose and strawberry seedlings distributed across the area.

The aim is to introduce new types of seedlings, increase production efficiency and achieve a qualitative leap in the region’s agricultural landscape.

It reflects the center’s keenness to support sustainable agricultural development by spreading highly economically viable plant varieties, which are propagated using tissue culture techniques to ensure quality, genetic purity and suitability to the targeted climatic and environmental conditions.

The center continues to implement several programs that aid farmers by providing research and technical solutions based on sustainable agricultural practices, achieving optimal efficiency in using resources and maximizing production value, in line with National Agriculture Strategy objectives.