Comparison of Imazalil Removal onto Montmorillonite and Nanomontmorillonite and Adsorption Surface Sites Involved: An Approach for Agricultural Wastewater Treatment

2015 ◽  
Vol 54 (5) ◽  
pp. 1529-1538 ◽  
Author(s):  
Martina Gamba ◽  
Federico M. Flores ◽  
Jana Madejová ◽  
Rosa M. Torres Sánchez
Keyword(s):  
Wastewater Treatment ◽  
Agricultural Wastewater ◽  
Surface Sites ◽  
Adsorption Surface

scholarly journals Governing Transactions and Interdependences between Linked Value Chains in a Circular Economy: The Case of Wastewater Reuse in Braunschweig (Germany)

2018 ◽  
Vol 10 (4) ◽  
pp. 1125 ◽  
Author(s):  
Oliver Maaß ◽  
Philipp Grundmann
Keyword(s):  
Wastewater Treatment ◽  
Circular Economy ◽  
Crop Production ◽  
Local Level ◽  
Wastewater Reuse ◽  
Value Chains ◽  
Governance Structures ◽  
Structured Interviews ◽  
Agriculture Sector ◽  
Agricultural Wastewater

Reusing wastewater in agriculture has attracted increasing attention as a strategy to support the transition towards the circular economy in the water and agriculture sector. As a consequence, there is great interest in solutions for governing the transactions and interdependences between the associated value chains. This paper explores the institutions and governance structures for coordinating transactions and interdependences between actors in linked value chains of wastewater treatment and crop production. It aims to analyze how transactions and interdependences shape the governance structures for reusing wastewater at the local level. A transaction costs analysis based on data from semi-structured interviews and a questionnaire is applied to the agricultural wastewater reuse scheme of the Wastewater Association Braunschweig (Germany). The results show that different governance structures are needed to match with the different properties and requirements of the transactions and activities between linked value chains of wastewater treatment and crop production. Interdependences resulting from transactions between wastewater providers and farmers increase the need for hybrid and hierarchical elements in the governance structures for wastewater reuse. The authors conclude that aligning governance structures with transactions and interdependences is key to efficiently governing transactions and interdependences between linked value chains in a circular economy.

A theoretical investigation of the adsorption surface sites of the activated MgCl2

2007 ◽  
Vol 270 (1-2) ◽  
pp. 164-170 ◽  
Author(s):  
Dmitry A. Trubitsyn ◽  
Vladimir A. Zakharov ◽  
Ivan I. Zakharov
Keyword(s):  
Theoretical Investigation ◽  
Surface Sites ◽  
Adsorption Surface

New technologies for on-site domestic and agricultural wastewater treatment

2001 ◽  
Vol 28 (S1) ◽  
pp. 115-123 ◽  
Author(s):  
Douglas Joy ◽  
Claude Weil ◽  
Anna Crolla ◽  
Shelly Bonte-Gelok
Keyword(s):  
Wastewater Treatment ◽  
New Technologies ◽  
Agricultural Wastewater

scholarly journals Wastewater Treatment of Mariout Lake Drains Using Combined Physical, Chemical, and Biological Methods in Microcosm Experiments

2019 ◽  
Vol 7 (2) ◽  
pp. 46 ◽  
Author(s):  
Hermine RZ Tadros ◽  
Samia Kh Hamdona ◽  
Mary G Ghobrial ◽  
Mona F El-Naggar ◽  
Omayma H Abd El-Hamid
Keyword(s):  
Drinking Water ◽  
Wastewater Treatment ◽  
Black Pepper ◽  
Sewage Water ◽  
Piper Nigrum ◽  
Wastewater Treatment Process ◽  
Agricultural Wastewater ◽  
Physical Chemical ◽  
Biological Methods ◽  
Fish Productivity

The treatment of wastewater is a must due to the decrease of clean water and the increase in the consumption of fresh water for domestic uses. This study discusses the physical, chemical, and biological treatments of water from different types of Mariout Lake drains. It also aims at a designation of appropriate wastewater treatment process for sewage water (El-Qalah drain), agriculture water (El-Umoum drain), and raw drinking water before treatment (Nubareya canal) so as to adopt an appropriate procedure to be applied as the drains discharge their wastewaters in Mariout Lake affecting its water quality as well as its fish productivity. Obtaining secure effluents for discharge in natural water bodies (El-Mex bay), or using treated effluents in agriculture or industrial purposes, is a target too, open for estimation. Alum, aeration beside two natural medicinal plants, piper nigrum (Black Pepper) and dry ginger (Zingiber officinalis), and the eukaryotic microorganism yeast, were used for treatment, in addition to the freshwater submerged macrophyte Ceratophyllum demersum.The results of the physicochemical parameters revealed that the best material for treatment in El-Qalaa sewage drain was by Alum + Aeration + Ginger + Ceratophylum demersum.The most preferable material for both the raw drinking water of Nubareya canal and El-Umoum agricultural wastewater was Alum + Aeration + Yeast + Ceratophylum demersum.Regarding the four trace metals' (Zn, Pb, Fe, and Cu) concentration treatments, the best treatment in all cases was found to be Alum + Aeration + Yeast + Ceratophylum demersum, except for Zn in El-Qalaa sewage water which had to be treated by Alum + Aeration + Ginger + Ceratophylum demersum.

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