Hydrothermally-altered feldspar as an environmentally-friendly technology to promote heavy metals immobilization: Batch studies and application in smelting-affected soils

2021 ◽  
Vol 291 ◽  
pp. 112711
Author(s):  
Paula Godinho Ribeiro ◽  
Jean Michel Pereira Souza ◽  
Marcos Rodrigues ◽  
Ivan Célio Andrade Ribeiro ◽  
Teotonio Soares de Carvalho ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Environmentally Friendly ◽  
Batch Studies

scholarly journals Traditional knowledge system in palung salt-making in Bali Island

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Yety Rochwulaningsih ◽  
Singgih Tri Sulistiyono ◽  
Mahendra Pudji Utama ◽  
Noor Naelil Masruroh ◽  
Siti Rukayah ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Natural Resources ◽  
Traditional Knowledge ◽  
Laboratory Tests ◽  
Environmentally Friendly ◽  
Coastal Ecosystems ◽  
Knowledge System ◽  
Coastal Communities ◽  
Nutritional Content ◽  
Traditional Knowledge System

Abstract This study presents the case of an original and traditional knowledge system of palung, which is used in salt-making in the coastal communities of Bali. The study emphasizes the practicalities of the system and its epistemology using anthropological and sociological methods. It is known that the traditional knowledge system of palung salt production has been preserved through the generations as a form of local wisdom. This traditional knowledge system emphasizes the use of local natural resources in accordance with the coastal ecosystems of Bali, where the cultivation of extracted soil (tanah sari), sand, bamboo, and coconut trees is carried out manually. This study has evidenced that the palung process successfully produces salt of excellent taste and quality. Based on laboratory tests conducted on palung salt samples, the results show that it does not contain any heavy metals and that it has good nutritional content. Because of its use of available natural resources, this traditional knowledge system is sustainable and environmentally friendly.

Batch studies for the investigation of the sorption of the heavy metals Pb2+ and Zn2+ onto Amizour soil (Algeria)

Geoderma ◽  
2009 ◽  
Vol 154 (1-2) ◽  
pp. 30-35 ◽  
Author(s):  
Lotfi Mouni ◽  
Djoudi Merabet ◽  
Didier Robert ◽  
Abdelkrim Bouzaza
Keyword(s):  
Heavy Metals ◽  
Batch Studies

scholarly journals The effectiveness of technological methods for the cultivation of oil flax

2021 ◽  
Vol 37 ◽  
pp. 00139
Author(s):  
Maria Karpova ◽  
Nina Roznina ◽  
Dmitriy Paliy ◽  
Elena Poverenova ◽  
Valentina Borovinskikh
Keyword(s):  
Heavy Metals ◽  
Environmentally Friendly ◽  
High Demand ◽  
High Quality ◽  
The Earth ◽  
The World ◽  
Flax Seeds ◽  
The Individual ◽  
Technological Methods ◽  
Entire Economy

Oilseeds and products of their processing, both for the individual and for the entire economy of the country, are of great importance. This is also due to the fact that in recent years there has been an increase in interest in the production of oilseeds due to the high demand for oilseeds and products of their processing on the world and Russian markets. Oil flax provides a high-quality technical oil used in the paint and varnish and leather and footwear industries for the production of paints, varnishes, putties, soaps, oilcloths, waterproof fabrics, linoleum and rubber substitutes. It is also used in metalworking, electrical engineering and other industries. Flax is an environmentally friendly culture. When cultivating it, a minimum amount of chemical protection and fertilizers is required. Flax crops free the earth from heavy metals and radionuclides. Flax seeds obtained from contaminated land do not even show any trace of radiation. In the last three years, a kind of oil flax boom has been observed in Russia. The high demand for products made from it makes it very profitable to grow, which explains the annual growth of the cultivated area.The article provides an economic substantiation of the project for organizing the cultivation of oil flax. With the help of technological maps, the costs of production are calculated.

scholarly journals Pemanfaatan sistem rotary biological contactor menggunakan kultur Omphalina sp yang diimobilisasi pada tandan kosong kelapa sawit untuk absorbsi logam berat Cu2+ dan Hg2+ (Utilization of rotary biological contactor system using Omphalina sp immobilized on oil palm empty fruit bunch for absorption of heavy metals Cu2+ and Hg2+)

2017 ◽  
Vol 85 (2) ◽  
Author(s):  
Firda DIMAWARNITA ◽  
Tri PANJI
Keyword(s):  
Heavy Metals ◽  
Waste Treatment ◽  
Negative Impact ◽  
Enhanced Recovery ◽  
White Rot Fungi ◽  
Environmentally Friendly ◽  
Absorption Spectrometry ◽  
Treatment Method ◽  
White Rot ◽  
Empty Fruit Bunches

Heavy metals such as lead, chromium, cadmium, copper, mercury, and arsenic which are industrial by-products can have negative impact on the environment if they not managed properly. Biosorption is environmentally-friendly waste treatment method. The advantage of biosorption compared to other waste treatment method is ecotechnology, which means effective, cheaper than chemical treatment and environmentally-friendly technology. Using the concept of bioremediation-based on microbial enhanced recovery of metals (MERM) allows the possibility of concentration process (bio-concentration) of metal content through the process of biosorption in microbial cells. The process of bio-concentration potentially to be applied on a commercial scale to increase the recovery of high-value commercial metals. This study aims to absorb Cu2 + and Hg2 + metals using Omphalina sp. cultured on empty fruit bunches (EFB) in rotary biological contactor (RBC) systems. The principle of this technique is waste containing metals was contacted with white rot fungi (WRF) Omphalina sp. which is attached to the surface of the media inside a reactor and then the final waste concentration was analyzed. This analysis was using atomic absorption spectrometry (AAS) device to measure the concentration of Cu2+ and Hg2+ metal ions and Freundlich isothermic equations for calculating maximum absorption power (q max). The highest absorption of Cu2+ ion is 0.3304 mg/g and Hg2+ is 0.074 mg/g for 6 hours. The adsorption capacity of Omphalina sp. for Cu2 + and Hg2 + solutions based on the Freundlich adsorption equation with maximum adsorption power for Cu2 + is 71.911 mg/g and Hg2+ is 20.216 mg/g. Biosorbent Omphalina sp. can be reused in biosorption process with percentage decrease of Cu2+ is4.30% (4.3 ppm) and Hg2 + is 27.80% (1.39 ppm) for 18 hours.[Key words : biosorption technique, empty fruit bunches, immobilization, rotary biological contactor , white rot fungi-Omphalina sp.] AbstrakLogam berat seperti timbal, krom, cadmium, tembaga, merkuri, dan arsen yang merupakan hasil samping industri dapat berdampak negatif terhadap lingkungan jika tidak dikelola dengan baik. Biosorpsi merupakan metode pengolahan limbah yang ramah lingkungan.  Keunggulan biosorpsi dibandingkan dengan metode pengolahan limbah yang lainnya adalah ekoteknologi yaitu teknologi efektif, murah dan ramah lingkungan. Melalui konsep bioremediasi berbasis microbial enhanced recovery of metals (MERM) memungkinkan terjadinya proses pemekatan (bio-konsentrasi) kandungan logam melalui proses biosorpsi dalam sel mikroba. Proses bio-konsentrasi tersebut berpeluang untuk diterapkan dalam skala komersial untuk meningkatkan recovery logam bernilai komersial tinggi. Penelitian ini bertujuan untuk meng-absorpsi logam Cu2+ dan Hg2+ menggunakan kultur Omphalina sp. pada media TKKS dalam sistem rotary biological contactor (RBC). Prinsip teknik ini yaitu limbah yang mengandung logam dikontakkan dengan kultur JPP Omphalina sp. yang melekat pada permukaan media di dalam suatu reaktor kemudian konsentrasi limbah akhir dianalisis kandungannya. Analisis ini mengguna-kan alat spektrometri serapan atom (SSA) untuk mengukur konsentrasiion logam Cu2+ dan Hg2+ dan persamaan isoterm Freundlich untuk menghitung daya absorbsi maksimum (q max). Penyerapan tertinggi ion Cu2+ sebesar 0,330 mg/g dan Hg2+ sebesar 0,074 mg/g selama 6 jam. Kapasitas adsorpsi Omphalina sp. terhadap larutan Cu2+ dan Hg2+ berdasarkan persamaan adsorpsi Freundlich dengan daya adsorpsi maksimumnya untuk Cu2+sebesar 71,911 mg/g dan untuk Hg2+ sebesar 20,216 mg/g. Biosorben Omphalina sp. dapat digunakan ulang dalam proses biosorpsi dengan persentase penurunan Cu2+ sebesar 4,30% (4,3 ppm) dan Hg2+ sebesar 27,80% (1,39 ppm) dalam waktu 18 jam.[Kata kunci : imobilisasi, jamur pelapuk putih Omphalina sp, rotary biological contactor, teknik biosorpsi logam, tandan kosong kelapa sawit.]

scholarly journals Engineering Forest Trees with Heavy Metal Resistance Genes

2006 ◽  
Vol 55 (1-6) ◽  
pp. 263-268 ◽  
Author(s):  
Scott A. Merkle
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Field Tests ◽  
Environmentally Friendly ◽  
Woody Species ◽  
Metal Resistance ◽  
Transgenic Trees ◽  
Forest Trees ◽  
Toxic Heavy Metals

Abstract Pollution of soil and water with heavy metals such as mercury, cadmium and arsenic, is a worldwide problem. Phytoremediation, the use of plants to remove, sequester or detoxify pollutants, including heavy metals, offers an environmentally-friendly alternative to engineering- based methods for remediation. Forest trees have multiple features that make them particularly useful for removal of toxic heavy metals, especially if they can be engineered with genes allowing them to handle high levels of these elements. Although still in its infancy, research with transgenic trees carrying genes allowing them to detoxify or sequester some heavy metals has already made promising progress. Most of the work to date has been performed using poplar species and hybrids, although other woody species could be equally as useful. Trees have been engineered with genes for the handling of mercury, cadmium, copper and arsenic following two main approaches, phytoextraction and phytotransformation/ phytovolatilizaton. In vitro studies have shown the transgenic trees to have enhanced abilities to tolerate and/or accumulate these metals, and preliminary results from field tests indicate that the trees are functioning. New combinations of genes involved in metal transport or conversion may further enhance the heavy metal remediation capabilities of the transgenic trees. Given the environmentally friendly application, forest trees engineered for phytoremediation may be some of the first transgenic forest trees approved for operational deployment.

Environmentally friendly stabilized nZVI-composite for removal of heavy metals

2018 ◽  
pp. 623-642 ◽  
Author(s):  
Saeideh Tasharrofi ◽  
Sedigheh Sadegh Hassani ◽  
Hossein Taghdisian ◽  
Zahra Sobat
Keyword(s):  
Heavy Metals ◽  
Environmentally Friendly ◽  
Removal Of Heavy Metals

Development of an Environmentally Friendly Adsorbent for the Removal of Toxic Heavy Metals from Aqueous Solution

2011 ◽  
Vol 223 (4) ◽  
pp. 1837-1846 ◽  
Author(s):  
Jae-Woo Choi ◽  
Seung-Gun Chung ◽  
Seok-Won Hong ◽  
Dong-Ju Kim ◽  
Sang-Hyup Lee
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Environmentally Friendly ◽  
Toxic Heavy Metals

scholarly journals Transition to Organic Agriculture is a Way to Preserve Soils Fertility

2019 ◽  
Vol 5 (11) ◽  
pp. 205-211
Author(s):  
V. Babayev
Keyword(s):  
Heavy Metals ◽  
Soil Erosion ◽  
Soil Pollution ◽  
Organic Agriculture ◽  
Agricultural Production ◽  
Large Scale ◽  
Environmentally Friendly ◽  
Ecosystem Approach ◽  
Agricultural Ecosystem ◽  
Environmentally Friendly Production

The use of the agricultural ecosystem approach in agriculture is aimed at environmentally friendly agricultural production and helps to prevent soil erosion and preserve fertile land. Therefore, large-scale and detailed studies of soil and the environment in the region are carried out using agrochemical methods to assess fertility, sources of soil pollution (heavy metals, chemicals, groundwater, etc.), which leads to accelerated adaptation of these areas to environmentally friendly production.

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