Food, Energy, Water, and Land

The food-energy-water-land nexus describes the point where these four systems, which are key to enabling socieity, intersect. Putting systems in place to conserve or recover one often provides conservation benefits for the others. This point provides many opportunities for organizations to optimize their operations and ensure that the resources being used are used efficiently and are returned to the system to be reused again.

Recovering Methane from Industrial Wastewater


Microsoft has been developing a demonstration facility in Wyoming that uses biogas from a nearby treatment plant to power its data center.
Circular Economy Categories: 
MGM Diverting Pre-Consumer Food Waste

MGM Resorts International

Since 2007, MGM Resorts has been diverting much of the pre-consumer waste from their Las Vegas Strip properties to a local pig farm.
Circular Economy Categories: 
Animal Feed and Bio-Gas Energy from Brewing


Brewing is traditionally a local business, and SABMiller operations cultivate many of the characteristics of a closed-loop system.
Circular Economy Categories: 
Cross-farm Collaboration


Employing cross-farm collaboration, PepsiCo uses slurry from Dutch and Belgian dairy and pig farms as a natural fertilizer on potato farms, which reduces the need for chemical-based soil enhancers and associated carbon emissions.
Circular Economy Categories: 
Zero Waste Landfill Program


In its Zero-Waste-to-Landfill programming, Walmart tracks key data across 50 separate waste categories and uses that information to make more efficient decisions about reducing waste.
Circular Economy Categories: 
Silicon Valley Advanced Water Purification Center


As a leading water technology company, Xylem is working with customers and partners around the world to develop innovative solutions to these water challenges. One example of this is the Santa Clara Valley Water District (SCVWD) in San Jose, California.
Circular Economy Categories: 
Recovering Potassium Hydroxide


Small amounts of hydroflouric acid used in gas production must be neutralized, often using potassium hydroxide (KOH). This spent KOH was disposed of by the refineries as a hazardous waste. Veolia has developed a method to recover and recycle this spent chemical.
Circular Economy Categories: 
Recycling Water in Hydraulic Fracturing


ExxonMobil partnered with a major service company to test the feasibility of recycling produced water rather than using freshwater during hydraulic fracturing of certain types of wells.
Circular Economy Categories: 
Terneuzen Water Recycling

Dow Chemical Company

To help manage freshwater use and reuse, Dow Terneuzen, of The Dow Chemical Company in the Netherlands, has partnered with the Water Board Scheldestromen, the City of Terneuzen, and water company Evides to create a public- private approach.
Circular Economy Categories: 
Reclaimed Water Infrastructure


The Walt Disney Company recognizes that the challenges related to water are highly localized. As such, the company evaluates water-related challenges on a site-specific basis and designs conservation programs catered to the location.
Circular Economy Categories: 
Alcoa Technology Center


Key to achieving water goals as well as assisting customers globally is Alcoa’s Natural Engineered Wastewater Treatment technology that mimics natural wetlands to sustainably treat wastewaters.
Circular Economy Categories: 
Project Liberty


DSM has partnered with POET, LLC to create a new form of cellulosic bio-ethanol through a program called “Project Liberty.” Instead of using new crops or post-consumer oils or waste, DSM’s program works with industrial-level corn crop residue that are left after the corn has been harvested.
Circular Economy Categories: 
Green Energy at Fairfield Facility


The Anheuser-Busch brewery in Fairfield, California is currently using “green” energy provided by an onsite solar array and wind turbine to provide on average 15% of its electricity needs.
Circular Economy Categories: 
Beet Sugar Repurposing and Reuse


Soil and stone removed during the beet sugar cleaning process isn't seen as a waste problem at British Sugar is sold at a volume of 150,000 tons a year, and a third of this is sold under the Topsoil brand - part of British Sugar.
Circular Economy Categories: 
Taking Back Waste Streams


Initially an organic produce delivery service, Belgian startup Cirkle has found a business opportunity by capitalizing on two elements: first, their established logistics network, and second, a frustration shared by almost every citizen - proper disposal of household waste.
Circular Economy Categories: 
Recycled Food Waste Conversion


Enterra uses the larvae of black soldier flies to turn recycled food products into ingredients for fish and poultry feedstock, diverting organic food waste.
Circular Economy Categories: 
Materials Management

Republic Services

At their Pacific Region Compost facility just outside of Portland, Oregon, Republic Services processes roughly 9,000 tons of source-separated commercial and industrial food waste, combined with close to 110,000 tons of yard waste.
Circular Economy Categories: 
Anaerobic Digestion

Republic Services

In Orlando, Florida, Republic is collecting source-separated food waste from local theme parks, hotels, restaurants, and supermarkets for an anaerobic digestion (AD) system run by Harvest Power. Each year this system processes nearly 45,000 tons of food waste and 75,000 tons of other liquid wastes.
Circular Economy Categories: 
Recycling Water at Vineland Plant

General Mills

At the General Mills plant in Vineland, New Jersey, water used to cool soup cans in the final stage of the canning process is now being captured and recycled saving 56 million gallons of water per year.
Circular Economy Categories: 
Cooling Tower Water Reuse

Lockheed Martin

Smart water management at Lockheed Martin facilities supports smart energy management since a significant portion of its energy use stems from heating, cooling, and circulating water in operations.
Circular Economy Categories: 
SE London Power Plant


In 2008, Veolia signed a deal to develop the South East London Combined Heat and Power Plant's (SELCHP) capacity to take the previously unused generated heat and use it to provide heat for 2,500 homes in five council estates in Southeast London.
Circular Economy Categories: 
Just Peachy

Campbell Soup Company

Campbell Soup Company partners with the Food Bank of South Jersey to repurpose blemished peaches.
Circular Economy Categories: