Bion Announces Approval of New U.S. Patent that Broadens Protection for the Company's...

Bion Announces Approval of New U.S. Patent that Broadens Protection for the
Company's Livestock Waste Environmental Treatment Processes

NEW YORK, June 30 /PRNewswire-FirstCall/ -- Bion Environmental Technologies,
Inc. (OTC Bulletin Board: BNET) announced today that it was notified that its
U.S. Patent application 11/592,513 entitled "Low Oxygen Biologically Mediated
Nutrient Removal" has been approved. The patent application was made on
November 6, 2006; upon publication and issuance, the patent will be officially
granted and will remain in force until November 5, 2024. This new patent
strengthens Bion's protection for the process's ability to convert and remove
phosphorous. In addition the patent provides wider process configuration
coverage, greatly enhancing the ability to provide flexible treatment systems
to Bion's clients.

James Morris, Ph.D., P. E., Bion's Chief Technology Officer, stated, "This new
patent describes the removal of phosphorus utilizing a new and unique process
and system configuration. Bion now has in hand a very broad array of patents
protecting variations and enhancements of the core Bion process. The Company's
IP portfolio at present includes ten U.S. patents, as well as patents in
Canada, New Zealand and Mexico, with an additional U.S. patent applied for and
pending, along with patent applications under consideration for the European
Union, Brazil, Argentina and Australia."

Bion's patents protect its proprietary technology that uses biological,
chemical and mechanical processes to remove nutrients and other harmful
substances, as well as extract renewable energy, from high-volume concentrated
livestock waste streams. Bion systems provide effective environmental
treatment at a substantially lower cost than conventional wastewater treatment
plants that rely on expensive highly-oxygenated and chemical processes. Bion's
environmental management system is the only technology able to provide a
comprehensive solution to concentrated livestock waste, through simultaneous
removal and stabilization of nutrients and reduction of air emissions
including ammonia, hydrogen sulfide, VOC's, greenhouse gases, odors and other
pollutants, together with reductions of pathogens, antibiotics and hormones.
Bion's system can be configured to simultaneously reclaim renewable energy
from the 'waste' biomass in a highly efficient process.

About Bion: Bion has provided solutions to the agriculture and livestock
industry since 1990, with 30 first-generation systems installed through 2003.
Bion's next-generation technology results from 18 years of research &
development, testing, commercial deployment, and further adaptation to
evolving standards and opportunities. In addition to providing environmental
treatment, the system recovers cellulosic biomass from the waste stream to
produce renewable energy in a process different and much more efficient than
others that seek to exploit this energy source. The technology is scalable,
proven and quickly gaining acceptance by regulatory agencies and other
stakeholders as an effective solution to the environmental issues associated
with concentrated livestock waste. For more information, see Bion's website:
www.biontech.com.

This material includes forward-looking statements based on management's
current reasonable business expectations. In this document, the word
'potential', 'will', 'proposed' and similar expressions identify certain
forward-looking statements. These statements are made in reliance on the
Private Securities Litigation Reform Act, Section 27A of the Securities act of
1933, as amended. There are numerous risks and uncertainties that could result
in actual results differing materially from expected outcomes.

SOURCE Bion Environmental Technologies, Inc.

Mark A. Smith, President, +1-719-256-5329, mas@biontech.com, or Craig Scott,
Vice President-Capital Markets/IR, +1-303-843-6191, cscott@biontech.com, both
of Bion Environmental Technologies, Inc.