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An alkaline hydrolysis machine used for water cremations. An example of alkaline hydrolysis in minnesota

Alkaline Hydrolysis in Minnesota

Guest Author: This article was written by Shaun Heath, a licensed funeral director in Minnesota since 2004, specializes in funeral planning and decedent affairs with expertise in alkaline hydrolysis, embalming, body preparation, domestic and international decedent transportation. A graduate of the University of Minnesota Program of Mortuary Science,  Shaun has provided compassionate support to families at the Mayo Clinic, the University of Minnesota, LifeSource, and Metro First Call.

Body Disposition in Minnesota

As a licensed funeral director with nearly 20 years experience in deathcare, I have had the
privilege of families entrusting me to help honor their loved ones’ final wishes. Throughout Minnesota, I’ve worked with various forms of body disposition, including earth burial, flame cremation, and alkaline hydrolysis, also known as water cremation. Minnesota has also legalized natural organic reduction, or human composting in May 2024, which will be available starting in July 2025.

Cremation: A Growing Trend

When a loved one passes away, families must decide on the best form of disposition. The trend towards cremation continues to rise nationwide. In Minnesota, over 70% of the deceased were cremated according to a 2024 CANA study. Although seven out of ten families in Minnesota are seeking cremation, in my experience few consumers are aware or prepared to respond when the funeral director asks “cremation by flame or water?” because many people are still unaware of the differences between flame cremation and alkaline hydrolysis.

What is Alkaline Hydrolysis?

Alkaline hydrolysis—also referred to as flameless or water cremation, Aquamation™, Resomation™—in simple terms is a natural process of decomposition that uses a combination of water, alkali (potassium hydroxide, aka lye) and heat to liberate the soft tissues of body from skeletal remains. The body is laid in a rigid porous basket or on a tray which is then sealed within a stainless steel vessel. An alkaline water solution is introduced, heated and circulated over the body. In a matter of 3-12 hours (varies with equipment) a sterile aqueous solution enters the municipal wastewater system while the bones are retained. The wet bones are carefully removed, fully dried and further reduced to a powder resembling the consistency and color of flour which is returned to the family. 

Minnesota Leads the Way 

Minnesota became the first state to legalize alkaline hydrolysis in 2003. The first vessel designed for individual human disposition was installed in 2006. I consider myself fortunate to have operated the initial unit in 2008 and continue to facilitate alkaline hydrolysis for families. 

As of August 2024, 28 US states and 5 Canadian provinces & territories in North America have passed alkaline hydrolysis legislation, although not every legalized state has an operating facility. 

Despite the national disparity in alkaline hydrolysis facilities and crematories, every funeral establishment has the ability to offer alkaline hydrolysis. Any provider that does not have a water cremation facility can engage trusted providers in the industry in order to offer this service to families. 

Advantages of Alkaline Hydrolysis

Environmental 

  • Uses water instead of fossil fuel; all water is reclaimed, treated and safely returned to the environment
  • Uses significantly less energy than flame cremation
  • Releases minimal greenhouse gasses

Public Health 

  • Destroys harmful pathogens (e.g. prion diseases, bacteria and viruses)
  • Other harmful agents residing in the body (e.g. chemotherapeutics, formaldehyde, mercury in dental fillings) are either neutralized or contained for filtering or purification at the local water treatment facility  

Respect & Dignity 

  • Gentle process that does not require removal of medical implants
  • Produces 20% more skeletal remains than flame cremation
  • No commingling with residual remains from previous cycles 

Challenges of Alkaline Hydrolysis

Location 

  • Limited facilities in Minnesota

Cost 

  • Slightly more expensive than flame cremation due to equipment and transportation needs. 

Bariatric Limitations 

  • Due to equipment capacity, currently not an option for individuals weighing over 500 pounds. 

Making an Informed Choice

Choosing how you return to the earth is a personal choice and can carry ethical, cultural, and environmental implications. It’s essential to rely on facts rather than misconceptions when making these deeply personal decisions. I encourage you to consult with your local funeral director for more insights and detailed options available in your area. A funeral professional’s duty is to offer unbiased knowledge and expertise to guide families to a meaningful experience. 

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Final arrangements are no longer an afterthought. A growing number of people are being proactive about their funeral plans and considering the environmental impact of their choices, which has led to rising interest in natural burial. Unlike conventional methods, natural burial offers a range of options that are often more affordable, simple, and environmentally conscious. According to the National Funeral Director’s Association 2024 Consumer Awareness and Preferences Report, 68% of respondents expressed interest in natural burial—up from 55.7% in 2021. This shift signals a broader cultural shift in how we approach end-of-life decisions. People are prioritizing values like environmental stewardship and their connection to nature. As a result, natural burial has emerged as a meaningful and sustainable alternative to traditional practices, symbolizing a more thoughtful and values-driven approach to honoring loved ones. Whether it’s about reducing your environmental footprint, connecting with nature, or creating a more meaningful goodbye, natural burial redefines how we rest. This guide explores what natural burial is, why it’s on the rise, and what it costs. 5 Reasons Why People Are Choosing Natural Burial More and more people are opting for natural burials—and with good reason. Here are five reasons why more people are opting for natural burial: 1. Sustainability Natural burials are designed to have minimal environmental impact. They avoid harmful embalming chemicals, reduce land disruption, and conserve natural resources. Unlike traditional burials, which emit around 250 pounds of carbon, natural burials can sequester approximately 25 pounds. This makes natural burial an excellent end-of-life choice for anyone prioritizing the health of our planet. By forgoing embalming and choosing minimally invasive burial methods, natural burials honor both the land and the body of the deceased. The process supports the natural cycle of life, enriching the earth with nutrients rather than polluting it. 2. Conservation Natural burial grounds forego embalming fluids, require biodegradable coffins, and conserve land which help protect and restore natural landscapes. Funds paid to natural burial plots are also reinvested into conserving forests, meadows, and other ecosystems. “The purpose of conservation is to offer the greatest good to the greatest number of people for the longest time,” says the chief of the US Forest Service American Forester Gifford Pinchot. Every natural burial helps protect forest ecosystems where wildlife and plant habitats can thrive while giving families a place to honor their loved ones. 3. Return to Nature Natural burial allows you to return to the earth. By allowing the body to naturally decompose, nutrients are recycled into the soil, fueling new life and a return to the natural cycle. This practice embraces minimal intervention, often using biodegradable caskets or shrouds to support the process. It highlights that our bodies belong to nature and when they return to the earth they can help continue the cycle of life. 4. Reflect Your Values Many people spend their life caring for the world around them whether through recreational gardening or more involved philanthropic efforts. With natural burial, these values can guide one’s final resting place. For those dedicated to enjoying the outdoors and caring for the planet, it’s only fitting to choose a final resting place in nature. A natural burial provides a meaningful resting place while reflecting values of care, sustainability, and simplicity. 5. Participation Natural burials provide families with an opportunity to play a more active role in the end-of-life process. Instead of immediately handing over the process when a loved one passes, families are encouraged to be directly involved in creating heartfelt, intimate goodbyes. This hands-on approach allows families to honor their loved ones in a way that aligns with their values and wishes, bringing a sense of comfort and peace during a difficult time. Additionally, natural burial sites offer ongoing opportunities for connection with loved ones to celebrate memories while enjoying the beauty of nature. The Issues with Traditional Burial For decades, traditional burial practices have shaped how families navigate the loss of a loved one. These practices often rely on costly services and leave families with an expensive and resource-intensive end-of-life system that can feel detached from personal connection. On top of that, environmental concerns have become increasingly significant. Traditional burials center around embalming, metal caskets, and heavy concrete vaults. And while this offers familiarity, it also has its issues. Embalming fluids, non-biodegradable materials, and excessive land usage take a toll on the planet, leaving many questioning if there’s a better way. As more people recognize these challenges, the demand for environmentally sustainable and emotionally resonant end-of-life choices has fueled interest in natural burials. Who’s Choosing Natural Burial Natural burial isn’t limited to a specific type of person. Its appeal lies in the simplicity, sustainability, and personalized experience it offers. This choice typically resonates with: Individuals who prioritize eco-friendly practices Those seeking a closer connection to nature Families desiring more active roles in honoring their loved ones’ lives Natural burial embraces people from all walks of life. Whether you’re a conservationist, an avid gardener, or someone who cherishes the outdoors, this option reflects a shared respect for the environment. Environmentally-Conscious Burial Options There are many ways to choose a more sustainable end-of-life option than what’s offered with traditional burial. Among the non-traditional approaches gaining popularity are natural burial, human composting, water cremation, and fire cremation. Each method offers unique environmental benefits, but natural burial stands out as the most sustainable choice. Here’s a quick comparison of the environmental benefits and costs associated with these non-traditional methods: Comparison of Non-Traditional Disposition Methods Method Net Carbon Footprint Fuel Expenditure Amount of left-over product for disposal Enviro Benefits (➕) & Costs (–) Natural Burial Sequesters 25lbs CO2 per burial,10 tons per acre Transportation to cemetery None ➕ Land protection ➕ Nutrient contribution to soil Human Composting Unknown ・Producing and transporting natural materials to the facility ・Construction and maintenance of facility and units ・Transporting finished material 1+ cubic yard of leftover material 10-15 pounds of pulverized bone ➕ Resortation of depleted soil – Material acquisition – Facility maintenance Water Cremation 150-200lbs CO2 emissions per person ・Electricity or propane to heat 100 gal of water under pressure for 3-12 hrs ・Processing and transport of potassium hydroxide 100-300 gallons of effluent 10-156 lbs of pulverized bone – Potential algae bloom from runoff – Disposal of effluent Fire Cremation 250-536lbs CO2 emissions per person Up to 500 gallons of field, usually natural gas to burn at 2000℉ for 3-4 hours 7-10 lbs of pulverized bone – Potential algae bloom from runoff – Mercury poisoning of air and water Source: Green Burial Council Challenges of Natural Burial The key challenge to natural burial is the need for pre-planning coupled with many people’s reluctance to discuss end-of-life plans. Since the body is not embalmed, the burial process needs to happen quickly, adding a layer of urgency. This paired with the small amount of natural burial sites can be tricky because natural burial sites are not yet abundent, making accessibility for many a roadblock. Arranging for transportation of the body is possible, but having early discussions and a clear plan in place helps reduce the stress of last-minute decisions, ensuring a smoother process for loved ones. Planning for the Future Natural burial is changing how we approach end-of-life traditions. Could natural burial sites be the cemeteries of the future? It’s entirely possible as more people rethink tradition and acknowledge environmental challenges. Natural burial represents an opportunity for positive change—enabling families to make impactful choices about their legacy.
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