Phytoremediation of Domestic Wastewater

Phytoremediation is fresh, well organized, low priced and recycled method for control of environmental pollution. In this phytoremediation technology, plants are used to enhance the status of environment. By using this method, organic and inorganic pollutant can easily eliminate from domestic. An aquatic plant culture was grown in regimented cement tank. Domestic waste Water was filled in this cement tank for specified interval of seven days. Before growth of aquatic plant culture quality of domestic waste water was evaluated. After specified time interval domestic waste water quality was again evaluated to check improvement of quality of waste water. The result of analysis indicates that phytoremediation process improves the quantity of waste water. For this phytoremediation process Canna, Hyacinth colocasia Arabica, Typha etc. aquatic plants are used. These aquatic plants absorb organic and inorganic parameters from waste water.

An Empirical Study on the Main Determinants of Recycling Plastic Waste in Tunisia

Over the past fifteen years, numerous policies for recycling and recovering waste have been implemented throughout the world. Tunisia is among the countries considering recycling as a sustainable development path. This empirical study aimed to investigate and examine the influence of financial determinants measured by the price of waste disposal (PDI), institutional determinants measured by the collection of waste (CW) and the number of drop-off recycling centers, and ordinance and demographic determinants measured by the population density and the recycling rate for plastic as a domestic waste based on a panel of 24 Tunisian governorates over the 2001–2020 period. It is concluded from the empirical findings that all exogenous variables except population density have a significant effect on the recycling rate.

Natural dilution and distribution of ammonia of groundwater in Kuta Alam sub-district, Banda Aceh city 16 years post tsunami

The 2004 earthquake off the west coast of Aceh caused a catastrophic tsunami. The massive influx of seawater into the land affected the environment, especially groundwater. Kuta Alam was one of the sub-districts worst affected by the tsunami. In 2005 and 2006, the quality of groundwater degraded due to, among others, the content of ammonia compounds. Increasing the population density after city reconstruction became a problem for the environment as domestic waste also pollutes the groundwater. This study proved that while 2 of the 3 research samples showed a decrease in the level of ammonia compounds in groundwater. One sampling in a densely populated area showed an increase of ammonia concentration. In areas that are not densely populated, ammonia compounds have diluted to an acceptable level, but an increase was found in densely populated areas. This indicated that the pollution was most likely occur around high population area. Proofing through a simple linear regression analysis showed a strong correlation between the content of ammonia compounds and population density.

Potential of Earthworm (Perionyx Excavatus) in food treatment in Ho Chi Minh City

In Ho Chi Minh City, Vietnam, there are about 9 thousand tons of domestic waste every day and 73% of them are treated by using landfill sites [2]. With the population growth rate in recent years, the generated waste volume will then increase in the future and is estimated to reach a total of around 13 thousand tons that could cost Ho Chi Minh City about 260 thousand dollars in treating this waste in 2025 [3]. Although this treatment method is not without advantages, the downsides will be far more significant. Moreover, in recent years, the cultivation of Perionyx Excavatus, a species that had been reported to have the ability to treat organic waste in some foreign articles, has become increasingly popular in Vietnam. So, this research was aimed to evaluate the potentiality of Earthworm (Perionyx Excavatus) for food waste management of households in Lab-scale in Ho Chi Minh City, Vietnam. According to this study, the average outdoor humidity and temperature of Ho Chi Minh City are higher than optimal conditions to raise Earthworm. In addition, the percentage of biomass is highest when rising the proportion of food waste and cow dung 4:6, respectively. It’s a point for encourage the applying Earthworm (Perionyx Excavatus) for food waste management in Ho Chi Minh.

Potensi Culex quinquefasciatus sebagai Vektor Filariasis dan Kondisi Lingkungan di Kota Pekalongan

Pekalongan City was still an endemic area of Lymphatic Filariasis (LF). Twice cycles ofMass Drug Administration (MDA) had been implemented, but the Microfi laria rate (Mf rate) wasstill more than 1%. This observational research aimed to study the potential of Culex quinquefasciatusas a vector of LF in Pekalongan City. A Cross-sectional design was chosen as an approach in compilinginformation related to environmental factors and mosquitoes. The population of this research washouses located in Jenggot and Kertoharjo village with thirty-one houses, located around fi lariasiscases, purposively selected as samples. Variables studied in this research were environmental factorsand mosquito vectors. Data collection using observation, and laboratory examination throughmosquito dissection. Data would be analyzed descriptively. This study found that there were 8 Culexquinquefasciatus tested positive L3 fi larial worm (infective rate 4.39%). There were 74.2% of houseshad mosquitoes’ breeding sites around them. The breeding sites were found at domestic waste disposal,drainage in front of the house, and infi ltration well for liquid waste. As much as 86.2% of the breedingsites contained mosquito larvae. This research concluded that Cx. quinquefasciatus was confi rmedpositive fi laria worm thus establish as mosquito vector for Lymphatic Filariasis in Pekalongan City.The breeding sites related to the mosquito development were small water bodies, drainage in front ofand around the house.

Analysis of Water Chemistry Physics for Fish Cultivation Activities in The Tributary Komering River, Banyuasin District

Residents use the Komering tributary that flows through Pangkalan Gelebak Village in Banyuasin Regency for fish farming activities. Villagers tried to cultivate catfish and tilapia, but it did not work because they died. Water as a medium for fish farming activities is an important factor that must be considered. Water quality in waters can affect aquaculture activities and fish growth. The study was conducted to determine the water quality (physics and chemistry) in the Komering River tributary as a basis for the cultivation environment. The research was conducted in the Komering tributary of Pangkalan Gelebak Village, Banyuasin Regency, in September, October, and November 2019. The sampling point is determined using a purposive sampling method in four sampling points. The temperature measurements range from 27-32.7ºC, depth 0.4-9 m, brightness 0.2-1.1 m, and turbidity 12.62-69.2 NTU. Only the depth of the four physical parameters is unsuitable for cultivation activities. During the dry season, the water depth between the riverbed and cage nets does not reach 1m. Chemical parameter measurement results; dissolved oxygen 1.7 – 7 mg/l, pH 6.5 – 7, alkalinity 34 - 46 mg/l CaCO3, nitrate 0.892 - 2.278 mg/l, nitrite 0.032 - 0.217 mg/l, ammonia 0.02-0.398 mg/ l and ortho-phosphate 0.054-0.283 mg/l. The value of nitrate, ammonia, and orthophosphate indicated high values so than unsuitable for fish farming activities. Agricultural activities around creeks and domestic waste disposal are causes of poor water quality.

The Use of Drop-Structures to Increase the Dissolved Oxygen Level along the Cibarani Channel

The Cikapundung river basin community uses the Cibarani channel as a drainage system and water source for fishing. However, the test result released on 9th November 2020 revealed that the channel’s water quality failed to reach the class II raw water standards due to various domestic waste discharges. This led to the performance of various studies to identify pollution control techniques by limiting the wastewater discharge and quality, controlling the intake discharge, and using baffles. The Cibarani channel has a drop-structure that can improve the water quality, though the effect has not been previously detailed. Therefore, this study was intended to comprehensively examine the effect of the drop-structure along the Cibarani channel to improve water quality conditions, specifically the Dissolved Oxygen (DO) parameter. This study employed the one-dimensional HEC-RAS software to simulate the hydrodynamic and water quality conditions along the Cibarani channel, and the drop-structure was modelled using two alternatives consisting of a vertical wall and a steep riverbed. Subsequently, the drop-structure fitted with a vertical wall gave a more plausible reaeration rate of 125 day-1 and Root Mean Square Error (RMSE) value of 0.50. The placement of a similar configuration before the first housing of the channel increased the DO concentrations by an average of 4.37 mg/L. This was followed by the modelling of another drop-structure after the first housing to increase the DO levels at the downstream part. Eventually, the combination of the two new drop-structures succeeded in increasing the DO concentrations along the Cibarani channel to 3.3 - 6.9 mg/L.

IMPLEMENTASI PROJECT BASE LEARNING DENGAN KONSEP ECO-GREEN DI SMA IT BAITUL JANNAH BANDAR LAMPUNG

ABSTRAKSalah satu konsep Iptek yang dapat dikembangkan untuk sekolah adalah dengan berbasis eco-green. Keterkaitan pembelajaran Project Base Learning dengan konsep eco-green ini guna menekankan pada para guru agar dapat meningkatkan model pembelajaran yang lebih relevan. Salah satu permasalahan yang terjadi di sekolah SMA IT Baitul Jannah di masa pandemi ini adalah masih belum maksimalnya pembelajaran secara PjBL. Hal ini perlu adanya peningkatan kualitas dan kuantitas guru maupun siswa dalam bidang pendidikan. Menghadapi tantangan tersebut, guru dituntut untuk menguasai teknologi informasi dan penerapan langsung Iptek. Guru harus mampu memanfaatkan teknologi maupun Iptek dalam melaksanakan proses pembelajaran. Untuk itu tim melakukan kegiatan pengabdian kepada masyarakat berupa pelatihan dan penyuluhan pemanfaatan limbah minyak jelantah yang mana ini merupakan langkah awal dalam menerapkan konsep eco green di sekolah. Metode pengumpulan data yang digunakan adalah wawancara dan survei. Hasil dari kegiatan ini adalah manfaat pengetahuan secara praktikum dalam PjBL mata pelajaran kimia dan peningkatan kreatifitas siswa/i dalam meningkatkan kegiatan praktik mengenai konsep eco green. Hal ini didapatkan peningkatan sebesar 28,58% menjadi 100% siswa yang mengetahui manfaat dari limbah domestik yaitu minyak jelantah. Kata kunci: limbah domestik; minyak jelantah; pemberdayaan masyarakat; sabun batang; sekolah ABSTRACTOne of the science and technology concepts that can be developed for schools is based on eco-green. The linkage of Project Base Learning with the eco-green concept is to emphasize teachers so that they can improve learning models that are more relevant. The problem that occurred at the Baitul Jannah High School during this pandemic was that PjBL learning was still not maximal. This requires an increase in the quality and quantity of teachers and students in education. In these challenges, teachers are required to master information technology and direct application of science and technology. Teachers must be able to utilize technology and science in carrying out the learning process. For this reason, the team carried out community service activities in the form of training and counseling on the use of used cooking oil waste, which is the first step in implementing the eco-green concept in schools. The methods used are interviews and surveys. The results of this activity are the benefits of practical knowledge in PjBL chemistry subjects and increasing students’ creativity in increasing practical activities regarding the eco-green concept. This resulted in an increase of 28,58% to 100% of students who knew the benefits of domestic waste. Keywords: domestic waste; used cooking oil; community development; bar soap; school