Phytoremediation of soil treated with metalliferous leachate from an abandoned industrial site by Alternanthera sessilis and Ipomoea aquatica: Metal extraction and biochemical responses

2021 ◽  
Vol 170 ◽  
pp. 106349
Author(s):  
Kisholay Mazumdar ◽  
Suchismita Das
Keyword(s):  
Metal Extraction ◽  
Industrial Site ◽  
Alternanthera Sessilis ◽  
Ipomoea Aquatica ◽  
Biochemical Responses

scholarly journals PENINGKATAN KUALITAS LIMBAH DETERJEN DENGAN FITOREMEDIASI MENGGUNAKAN DIVERSITAS HIDROMAKROFITA INDONESIA

2021 ◽  
Vol 2 (2) ◽  
pp. 19-27
Author(s):  
Dyah Ayu Fajarianingtyas ◽  
Catur Retnaningdyah ◽  
Endang Arisoesilaningsih
Keyword(s):  
Alternanthera Sessilis ◽  
Ipomoea Aquatica ◽  
Eclipta Prostrata

Penelitian ini bertujuan menentukan (1) Efektivitas hidromakrofita polikultur dalam media tanah dibandingkan tanpa tanah pada fitoremediasi, (2) Perubahan pH, suhu, konduktivitas dan kadar deterjen pada variasi proses remediasi tersebut. Hidromakrofita yang digunakan yaitu polikultur (Alternanthera sessilis, Commelina nudiflora, C. brevifolius, Eclipta prostrata, Ipomoea aquatica, Ludwigia alternifolia, L. ascendens dan Marsilea crenata). Penelitian menggunakan RAL dengan lima kali ulangan. Kualitas limbah deterjen yang diamati adalah pH, suhu, konduktivitas dan kadar deterjen. Hasil penelitian menunjukkan bahwa hidromakrofita polikultur yang tumbuh dalam media tanah, sedikit lebih efektif menurunkan limbah deterjen (96,05%) dari kadar deterjen awal 22,88 mg/L selama 15 hari dalam fitoremediasi dibandingkan dalam media hidroponik (92,72%). Hidromakrofita polikultur hidup di tanah tergenang limbah deterjen mampu menurunkan nilai konduktivitas dari 2,35 mS/cm menjadi 1,16 mS/cm selama 15 hari. Akan tetapi konduktivitas pada media hidroponik berfluktuasi. Pada fitoremediasi selama tujuh hari, pH meningkat dan suhu berfluktuasi tanpa terpengaruh oleh media tanam atau kehadiran hidromakrofita.

New replica method with plasma polymerized film by glow discharge

1988 ◽  
Vol 46 ◽  
pp. 414-415
Author(s):  
A. Tanaka ◽  
M. Yamaguchi ◽  
T. Hirano
Keyword(s):  
Power Supply ◽  
Plasma Polymerization ◽  
Vacuum Chamber ◽  
Complex Surface ◽  
Replica Method ◽  
Metal Extraction ◽  
High Voltage Power Supply ◽  
Negative Glow ◽  
Hydrocarbon Gas ◽  
Hydrocarbon Molecules

The plasma polymerization replica method and its apparatus have been devised by Tanaka (1-3). We have published several reports on its application: surface replicas of biological and inorganic specimens, replicas of freeze-fractured tissues and metal-extraction replicas with immunocytochemical markers.The apparatus for plasma polymerization consists of a high voltage power supply, a vacuum chamber containing a hydrocarbon gas (naphthalene, methane, ethylene), and electrodes of an anode disk and a cathode of the specimen base. The surface replication by plasma polymerization in negative glow phase on the cathode was carried out by gassing at 0.05-0.1 Torr and glow discharging at 1.5-3 kV D.C. Ionized hydrocarbon molecules diffused into complex surface configurations and deposited as a three-dimensionally polymerized film of 1050 nm in thickness.The resulting film on the complex surface had uniform thickness and showed no granular texture. Since the film was chemically inert, resistant to heat and mecanically strong, it could be treated with almost any organic or inorganic solvents.

PRELIMINARY ASSESSMENT OF THE CURRENT POLLUTION STATUS OF THE RIVER ATUWARA, NIGERIA, WITHIN AN INDUSTRIAL SITE: A BIVARIATE APPROACH

2019 ◽  
Author(s):  
OGBIYE A. SAMUEL ◽  
IMOKHAI T. TENEBE ◽  
PRAISEGOD C. EMENIKE ◽  
DIWA I. DANIEL ◽  
DAVID O. OMOLE ◽  
...  
Keyword(s):  
Industrial Site ◽  
Preliminary Assessment ◽  
Pollution Status ◽  
Bivariate Approach

Physiological and biochemical responses of harvested rambutan (Nephelium lappaceum L.) fruits to postharvest dip treatments during storage

2018 ◽  
Vol 19 (1&2) ◽  
pp. 217-222
Author(s):  
Manjunath J. Shetty ◽  
◽  
P.R. Geethalekshmi ◽  
C. Mini ◽  
Vijayaraghava Kumar ◽  
...  
Keyword(s):  
Biochemical Responses ◽  
Nephelium Lappaceum ◽  
Physiological And Biochemical

Morphological, Physiological and Biochemical Responses of Poplar Plants to Drought Stress

2018 ◽  
Vol 5 (03) ◽  
Author(s):  
ARADHNA KUMARI ◽  
IM KHAN ◽  
ANIL KUMAR SINGH ◽  
SANTOSH KUMAR SINGH
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Biochemical Parameters ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Field Capacity ◽  
Drought Event ◽  
Total Biomass ◽  
Biochemical Responses ◽  
Physiological And Biochemical

Poplar clone Kranti was selected to assess the morphological, physiological and biochemical responses under drought at different levels of water stress, as it is a common clone used to be grown in Uttarakhand for making paper and plywood. The cuttings of Populus deltoides L. (clone Kranti) were exposed to four different watering regimes (100, 75, 50 and 25% of the field capacity) and changes in physiological and biochemical parameters related with drought tolerance were recorded. Alterations in physiological (i.e. decrease in relative water content) and biochemical parameters (i.e. increase in proline and soluble sugar content and build-up of malondialdehyde by-products) occurred in all the three levels of water stress, although drought represented the major determinant. Drought treatments (75%, 50% and 25% FC) decreased plant height, radial stem diameter, harvest index, total biomass content and RWC in all the three watering regimes compared to control (100% FC). Biochemical parameters like proline, soluble sugar and MDA content increased with severity and duration of stress, which helped plants to survive under severe stress. It was analyzed that for better wood yield poplar seedlings should avail either optimum amount of water (amount nearly equal to field capacity of soil) or maximum withdrawal up to 75% of field capacity up to seedling establishment period (60 days). Furthermore, this study manifested that acclimation to drought stress is related with the rapidity, severity, and duration of the drought event of the poplar species.

Extraction of polyethylene glycols with dicarbolide solutions in nitrobenzene

1990 ◽  
Vol 55 (8) ◽  
pp. 1959-1967 ◽  
Author(s):  
Petr Vaňura ◽  
Pavel Selucký
Keyword(s):  
Polyethylene Glycol ◽  
Molecular Mass ◽  
Extraction Constant ◽  
Metal Extraction ◽  
Polyethylene Glycols ◽  
Relative Molecular Mass ◽  
Published Data ◽  
Average Molecular Mass ◽  
Peg 400 ◽  
Extraction Constants

The extraction of polyethylene glycol of average molecular mass 400 (PEG 400) with dicarbolide solution in nitrobenzene and of longer-chain polyethylene glycol, of average molecular mass 1 500 (PEG 1 500), with chlorinated dicarbolide solution in nitrobenzene was studied. During the extraction of PEG 400, the polyethylene glycol solvates the Horg+ ion in the organic phase giving rise to the HLorg+ species (L is polyethylene glycol). The obtained value of the extraction constant Kex(HLorg+) = 933 is consistent with published data of metal extraction. Extraction of PEG 1 500 was treated applying the simplified assumption that the thermodynamic behaviour of PEG 1 500 is the same as that of n molecules of polyethylene glycol with relative molecular mass 1 500/n, each solvating one cation. For this model, the value of n = 3.2 ± 1.1 and the values of the extraction constants of the HL1/n,org+ and HL2/n,org+ species were obtained by using the adapted program LETAGROP. This value of n is consistent with published extraction data in the presence of polyethylene glycol with a relative molecular mass from 200 to 1 000.

Sign in / Sign up

Export Citation Format

Share Document