Chlorofluorocarbons
(CFCs) are ideal compounds for refrigerators and air conditioners because they
are nontoxic and noncorrosive. However, the chemical inertness of these
substances, once thought to be their major virtue, turns out to be their fatal
flaw. When these compounds leak into the atmosphere, as they inevitably do,
they are so unreactive they persist there for decades. Eventually these CFCs
reach altitudes where ultraviolet light causes them to decompose, producing
chlorine atoms that promote the destruction of the ozone in the stratosphere
(see discussion above). Because of this problem, the world’s industrialized
nations have signed an agreement (called the Montreal Protocol) that banned
CFCs in 1996 (with a 10-year grace period for developing nations). So we must
find substitutes for the CFCs—and fast.
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Monday, November 19, 2018
Wednesday, November 14, 2018
SCHOOL CHEMISTRY LABORATORY SAFETY GUIDE
Recognition of laboratory safety and health problems has crystallized
since the passage of the Occupational Safety and Health Act of 1970. This Act
requires that certain precautions be observed to protect the safety and health
of employees on the job. The employee designation includes all teachers
employed by private and public school systems in States that have occupational
safety and health plans accepted by the Occupational Safety and Health
Administration (OSHA) of the U.S. Department of Labor (DOL). OSHA rules and
regulations are provided to protect the employees and the facilities.
Monday, November 12, 2018
GUM THAT FOAMS
Mad Dawg chewing gum is
a practical joker’s dream come true. It is noticeably sour when someone first
starts to chew it, but the big surprise comes about ten chews later when
brightly colored foam oozes from the person’s mouth. Although the effect is
dramatic, the cause is simple acid–base chemistry.
The foam consists of sugar
and saliva churned into a bubbling mess by carbon dioxide released from the gum.
The carbon dioxide is formed when sodium bicarbonate (NaHCO3) present
in the gum is mixed with citric acid and malic acid (also present in the gum)
in the moist environment of the mouth. As NaHCO3 dissolves in the
water of the saliva, it separates into its ions:
Saturday, November 10, 2018
NUCLEAR WASTE DISPOSAL
Our society does not
have an impressive record for safe disposal of industrial wastes. We have
polluted our water and air, and some land areas have become virtually
uninhabitable because of the improper burial of chemical wastes. As a result,
many people are wary about the radioactive wastes from nuclear reactors. The
potential threats of cancer and genetic mutations make these materials
especially frightening.
Because of its controversial
nature, most of the nuclear waste generated over the past 50 years has been
placed in temporary storage. However, in 1982 the U.S. Congress passed the
Nuclear Waste Policy Act, which established a timetable for choosing and
preparing sites for the deep underground disposal of radioactive materials.
Monday, October 29, 2018
BEST PRACTICES OF PEATLAND MANAGEMENT
BEST PRACTICES OF PEATLAND MANAGEMENT
Indonesia’s peatlands
have been utilized since the end of 19th Century. Prior to 1920, Dayak rural
communities in South Kalimantan have begun to manage shallow peatlands in the
area behind the river bank (back swamp) which they call the lawau and manage it
for rain-fed rice fields (Suwardi et al., 2005). The river area is a fertile
area because it is influenced by sediment runoff from rivers. Basically Dayak people
are very environmentally friendly. In managing the land, they have a rotating
farming system that always maintains a balance with the utilization process following
a natural cycle (Suwardi et al., 2005). They divide the lands into zones
comprising settlement, bushes, harvested paddy field (jurungan), dry paddy
field (pahumaan), plantations, sacred zones, and protected zones (kayuan).
Sacred zones are customary protected zones that should not be cleared for
agricultural land. When the agricultural land has become infertile, they will
move to look for similar land in other places. After being left for 1-7 years the
former fields will become bush and after 7-12 years the bush will become a
forest. They will reopen the former field after 30 years, when it has become a
forest again. This is done continuously and sustainably.
Monday, October 22, 2018
PEATLAND RESTORATION AGENCY: A SMART WAY TO OBTAIN A QUICK WIN
The Jokowi
Administration have seen that improving forest and land governance may take
times. Thus, it needs an acceleration and simultaneous actions to have results
in a relatively short period. In terms of fire prevention strategy, the
Government of Indonesia then established Peatland Restoration Agency (Badan
Restorasi Gambut/BRG) in January 2016, after the big fire incident of 2015. The
Agency is tasked to rehabilitate 2 million hectares by 2019, and the current
program is to carry out 2.49 million hectares restoration, which include 1.1
million ha to be performed by the Government and partners, while 1.39 million
hectares by relevant private companies. This agency focuses on rehabilitating
and restoring heavily degraded peatlands in fire-prone areas. Thus, this agency
supports the grand strategy for peatland management developed by Directorate of
Peatland Degradation Control, Directorate General for Pollutant and
Environmental Degradation Control, Ministry of Environment and Forestry.
Wednesday, October 17, 2018
PEATLAND MANAGEMENT AND SUSTAINABLE DEVELOPMENT GOALS (SDGS)
The ultimate goal of
the sustainable development goals is to end poverty, protect the planet and
ensure prosperity for all. Hence, managing peatlands should also comply with
the goals. However, managing peatlands to provide livelihoods for local
communities as well as to conduct intensive agriculture and forestry may
contradict with the protection of the environment. The options are whether
peatlands should be drained or to be sustainably managed.
Monday, October 15, 2018
MANAGING PEATLANDS, TO COPE WITH CLIMATE CHANGE: INDONESIA’S EXPERIENCES
Indonesia has over 15 million ha of peatlands, which
is over 12% of its forest land spreading across islands of Sumatra, Kalimantan,
Sulawesi and Papua. This is the largest tropical peat land in the world,
followed by Democratic Republic of Congo, with the peatland area reaches 9
million ha, and the Republic of Congo with the area reaches about 5.5 million
ha (Miles et al., 2017).
Peatland can be defined as soil formed from the
accumulation of organic matters such as the remnants of plant tissue that
lasted for a long time (Kelompok Kerja Pengelolaan Lahan Gambut Nasional, 2006).
According to Government Regulation (GR) No. 71 of 2014 that has been amended by
GR No. 57 of 2016 on the Protection and Management of Peat Ecosystem, peatland
is defined as a naturally occurring organic material of plant residues that
decomposes imperfectly and accumulates in swamps. Furthermore, the regulation also
defines peat ecosystem as the order of peatland components that forms an
integrated system affecting one another and forming a balance, stability, and
productivity.
Wednesday, October 10, 2018
INTERNATIONAL COOPERATION FOR MANAGING PEATLAND
As indicated in
the previous section, Indonesia does not only work by itself to mitigate
problems in relation to peat management and peat fires. We also communicate and
collaborate with other countries and international agencies to stop peat
degradation and prevent peat fires. In the Southeast Asia Region, as the ASEAN
member, Indonesia has ratified the ASEAN Agreement on Transboundary Hazard
Pollution (AATHP) through Law No. 26 of 2014 on AATHP Endorsement, dated 14
October 2014. AATHP aims to prevent and control cross-border smoke pollution as
a result of land and/or forest fires particularly in peatlands that must be
implemented through intensive national, regional and international efforts
based on commitment, a spirit of partnership, and a tradition of solidarity to
achieve peace, progress and prosperity among ASEAN countries.
Tuesday, October 2, 2018
INDONESIA’S PEATLAND GOVERNANCE
A huge task. In the
past, Indonesia experienced unsustainable peatland management leading to the
degradation of peatland and peat fires. Thinking over the negative impacts
resulted from peat degradation and fires, the government of Indonesia has
prioritized the protection and sustainable management of peatlands, including
the restoration of heavily degraded peatlands. Presidential Instruction No. 8
of 2015 on the Suspension of New Licenses and the Improvement of Primary Forest
and Peatland Governance or commonly referred to as Inpres Moratorium is a
monumental decision reflecting the commitment of Indonesian government to
reform its peatland and forest management. It has targeted the postponement of
formal licenses for companies. The coverage of peatlands and primary forests
affected by this policy has been mapped and update every six months. This
political will has been supported or followed up by other regulations,
including:
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