Jurnal Ilmu Tanah dan Lingkungan

The Relationship between the Effectiveness of Phytoremediation Methods on the Growth Rate of Water Hyacinth Media in Liquid Waste of C6+

Dewi Safitri — 2024-10-01

Liquid waste of Cr6+ is often produced by nickel ore mining companies, one of which is CV. Unaha Bakti Persada has a Cr⁶⁺ concentration of 0.78 ppm which has not yet reached the 0.1 ppm quality standard, so it is necessary to treat Cr⁶⁺ waste using an in vitro phytoremediation technique for water hyacinth media of E. azurea and E. crassipes. The purpose of this study was to determine the effectiveness of phytoremediation method, the level of damage to water hyacinth and the rate of growth of the water hyacinth plant. The study used an in vitro phytoremediation method for water hyacinth media E. crassipes and E. azurea for 15 days. The results showed that the effectiveness of water hyacinth E. azurea was 87% able to reduce the concentration of Cr⁶⁺ 0.78 ppm to 0.1 ppm within 15 days, while E. crassipes and the combination of E. crassipes and E. azurea were 64%. The rate of water hyacinth damage to Cr⁶⁺ wastewater was faster in E. azurea, namely 40% compared to E. crassipes by 27% and the combination of E. crassipes and E. azurea by 13%. The growth of water hyacinth in Cr⁶⁺ wastewater was faster in the combination of E. Crassipes and E. azurea, namely plant weight 45%, root length 38%, plant height 23% compared to E. azurea, namely plant weight 35%, root length 32%, height plant 17%, and E. crassipes, namely plant weight 45%, root length 38%, plant height 7%.

Remediation Of Lead and Cadmium Contaminated Soil Using Fly Ash and Organic Materials

Ina Febria Ginting — 2024-10-01

Agricultural soils that are close to industrial areas are prone to be polluted by lead (Pb) and cadmium (Cd) caused by industrial waste. Soil remediation is a method to clean the soil from pollutant materials. Utilizing fly ash and organic matter is a way to reduce levels of Pb and Cd pollution in the soil. This research was conducted to study the effect of ameliorants on reducing the availability of Pb and Cd in soil. The greenhouse experiment was carried out using a randomized block design with the application of 3 types of ameliorants, namely fly ash, chicken manure, and cow manure. The experimental design was prepared with 2 dose levels, namely C: control; F1: 450g; F2: 600g; A1: 75g; A2: 105g; S1: 105g; S2: 135g; FAS1: 450 g+75 g+105 g; FAS2: 600g+105g+135g. Each treatment was repeated 3 times to obtain 27 experimental units. The experimental results showed that the effect of the treatment of fly ash, chicken manure, and cow manure significantly increased soil pH, KB, C-organic, and exchangeable bases as well as reduced levels of availability of Pb and Cd compared to controls. The use of single fly ash (F1 and F2) reduces the availability of Pb in the soil, while the available Cd decreased in the application of a combination of fly ash with chicken and cow manure (FAS1 and FAS2). The application of fly ash alone was able to reduce the availability of Pb and Cd which was higher than of chicken manure and cow manure alone. However, the provision of fly ash has not been able to increase the growth of kale plants.

Keywords: Cd, fly ash, chicken manure, cow manure, Pb, remediation

RARE EARTH ELEMENT PRELIMINARY STUDY ON BOBONARO SCALY CLAY MÈLANGE IN OBEN VILLAGE, SUBDRISTRICT OF NEKAMESE, DISTRICT OF KUPANG, NUSA TENGGARA PROVINCE

Herry Zadrak Kotta — 2024-10-01

The location of the investigation area is in Oben Village, Nekamese District, Kupang Regency, East Nusa Tenggara Province with coordinates 123° 40'40” E - 123° 41'20” E and 10° 16'0” S - 10° 16'40” S. The geology of the study area is generally occupied by mixed rocks dominated by a gray clay, blackish brown, reddish brown, with foreign chunks consisting of peridotite, sedimentary rock consisting of brown and reddish reddish limestone, silt, micaceous sandstones, metamorphic rock: chlorite schist, with quartzite veins. Of the five samples analyzed, namely four samples of soil matrix and one sample of Peridotite, the following results were obtained: six rare earth elements were contained in 4 samples of the soil matrix, namely Yttrium (Y): 3.63 – 68.75 ppm, Praseudymium (Pr): 7.38 – 38.38 ppm, Scandium (Sc): 4.83 – 4.93 ppm, Lanthanum (La): 21.48 – 91.03 ppm, Cerium (Ce): 32.48 – 184.85 ppm, and Neodymium (Nd): 9.4 – 57 ppm specifically for sample 1 also contains 3 rare earth elements, namely: Gadolinium (Gd): 3.48 ppm concentration the average is lower than its abundance in nature, Samarium Sm: 13.1 ppm, and Dysprosium: (Dy): 6.88 ppm. For rock samples only contain Praseudymium (Pr): 7.78 ppm and Cerium (Ce): 87.88 ppm.

The Spectral trends of cabbage (Brassica oleracea L.) at different fertilization levels

Muhammad Ardiansyah — 2024-10-01

Cabbage is one of the important horticultural commodities that are widely preferred as fresh vegetables or other processed foods because it has a mild sweet taste. To meet the nutritional needs of cabbage plants during the growth process, fertilizer application is a common practice in the community. Identifying, characterizing, and monitoring mixed vegetable crops in fields using traditional methods is a challenge. Observations with multispectral, hyperspectral or proximal sensing optical satellite data such as spectroradiometers have been widely used for identification, characterization and monitoring of plants in agricultural land. However, research on identification, discrimination and quantitative mapping of cabbage spectral profiles in Indonesia using spectroradiometers is still limited. This study aims to identify the spectral response profile of cabbage plants planted in narrow land using the spectroradiometer and to analyze the spectral response of cabbage to different fertilization level treatments. The results showed that the spectral trend of cabbage plants at all growth phases had a trend similar to the spectral changes of green vegetation. Cabbage reflectance is low at visible light wavelengths and high at red edge and near infrared wavelengths. Fertilization treatment significantly affected the cabbage spectral at the 5% level. At the same growth phase with the higher dose of fertilizer, the higher the reflectance of visible light (blue, green and red), red edge and near infrared. Variation of stable reflectance values increased in visible light waves, red edge and near infrared is interpreted to indicate good growth status of cabbage. At the growth phase stage, with increasing age of plants regardless of fertilization level, the reflectance of cabbage in blue and red waves decreased slightly, on the contrary the reflectance of cabbage in red edge and near infrared increased until it reached its peak at 45 days after planting and decreased after 63 days after planting.

Utilization of Decomposer Bacterial Isolate as Compost Bioactivator

Fahrizal Hazra — 2024-10-01

Compost is an organic fertilizer that comes from the weathering of organic materials. The conventional composting process takes a long time so the addition of bioactivators is needed to accelerate the compostng process. Environmental Technology and Security (ETS) section of SEAMEO BIOTROP in 2023 produced BIOTROP Compost (BIOPOS) as a result of self-management of leaf waste and mushroom baglogs at SEAMEO BIOTROP. However, BIOPOS still needs further development to explore decomposer bacteria that can be used as BIOPOS bioactivators to accelerate the composting process and improve the quality of the compost produced. This study aims to isolate, characterize, and test the effectiveness of decomposer bacteria as BIOPOS bioactivators in decomposing organic materials. Bacterial isolates BIOPB, BIOKB, BIOPI, KSCMI, and TJCMB were characterized morphologically, physiologically, and biochemically. Experimental methods were carried out in production and application of BIOPOS bioactivator. The characterization results showed that the bacterial isolates BIOPB, BIOKB, KSCMI, and TJCMB have potential as decomposer bacteria. The decomposer bacterial isolates were more effective in decomposing BIOPOS materials than EM4, as seen from the high temperature of BIOPOS which reached 52°C.