Effect of Different Parameters on Membrane Concentrate Treatment by using Vacuum Assisted Air Gap Membrane Distillation Crystallization (VAGMD-C)

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2025-04-10 DOI:10.1007/s11270-025-07945-9

Oyku Mutlu-Salmanli, Ismail Koyuncu

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Abstract

The concentration problem represents a significant challenge for membrane processes, necessitating supplementary treatment and management strategies. This study assesses the efficiency of a vacuum-assisted air gap membrane distillation/crystallization (VAGMD-C) system to addressing this issue, specifically focusing on the removal and recovery of boron, a critical raw material. Synthetic boron solutions were employed to optimize key parameters such as concentration, pH, and membrane type. Following this, real reverse osmosis (RO) concentrate was treated under optimized conditions using both commercial and custom-fabricated membranes. The experimental analyses included flux measurements, boron concentration assessments, and boron rejection rates, along with scanning electron microscope-energy dispersive spectrometry (SEM–EDS) and X-ray fluorescence (XRF) analysis of the resulting crystals. The results demonstrated that achieving up to 44.6% boron content in the crystals is feasible by utilizing the fabricated nanofiber membrane (NF) within the VAGMD-C system.

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不同参数对真空辅助气隙膜蒸馏结晶（VAGMD-C）处理膜精矿的影响

浓度问题代表了膜工艺的重大挑战，需要补充处理和管理策略。本研究评估了真空辅助气隙膜蒸馏/结晶（VAGMD-C）系统解决这一问题的效率，特别关注了关键原料硼的去除和回收。采用合成硼溶液对浓度、pH、膜型等关键参数进行优化。在此之后，真正的反渗透（RO）浓缩物在优化条件下使用商业和定制膜进行处理。实验分析包括通量测量、硼浓度评估和硼吸收率，以及扫描电子显微镜-能量色散光谱（SEM-EDS）和x射线荧光（XRF）对所得晶体的分析。结果表明，利用所制备的纳米纤维膜（NF）在VAGMD-C体系中制备出硼含量高达44.6%的晶体是可行的。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.